Honeywell Technical Manual

Honeywell Technical Manual
Technical Reference Manual
Design and Application Guide for
Honeywell Economizer Controls
63-8594-01
Table of Contents
Section 1 - Ventilation ...................................................................................1
Indoor Air Quality ...............................................................................................................................................................2
Building-Related Illness .....................................................................................................................................................3
Symptoms of Inadequate Ventilation .................................................................................................................................4
Indoor Air Ventilation Standards .........................................................................................................................................5
CO2 Based Demand Control Ventilation .................................................................................................................5
Energy Standards ..............................................................................................................................................................6
Ventilation Requirements ...................................................................................................................................................7
Air Handler Control Loops ..................................................................................................................................................9
Basic Economizer Control ................................................................................................................................................10
Mixed Air Formulas .......................................................................................................................................................... 11
Outside Air Percentage Chart ..........................................................................................................................................12
Example 1: Using the Outside Air Percentage Chart ............................................................................................13
Example 2: Use of Outside Air Chart on a Warm Day ..........................................................................................14
Extra Outside Air Percentage Chart ......................................................................................................................15
Example 3: Minimum Ventilation Adjustment ........................................................................................................16
Example 4: Ventilation Review Questions .............................................................................................................18
Economizer Cycle Definition ............................................................................................................................................20
Single and Two Stage Cooling With Economizer ..................................................................................................21
Section 2 - Enthalpy Theory And Controllers ...........................................23
The Psychrometric Chart .................................................................................................................................................24
Relative Humidity and Saturation .....................................................................................................................................25
Enthalpy ...........................................................................................................................................................................26
Psychrometric Chart of Enthalpy Economizer Control ..........................................................................................27
Single Sensor Enthalpy Control .......................................................................................................................................28
Two Sensor or Differential Enthalpy .................................................................................................................................29
Enthalpy Control with Carbon Dioxide Sensor .................................................................................................................30
Section 3 - Types of Analog Economizers ................................................31
H705 ................................................................................................................................................................................32
W7459 .............................................................................................................................................................................33
W6210 and W7210 ..........................................................................................................................................................34
W6215, W7215 and W7460 .............................................................................................................................................35
W7212, W7213 and W7214 .............................................................................................................................................36
W7340 and W7345 ..........................................................................................................................................................37
Analog Economizer Features ...........................................................................................................................................38
Transformer Wiring Requirements for Analog Economizers ............................................................................................39
Section 4 - H705 Economizer Module ........................................................41
H705 Economizer Module ................................................................................................................................................42
H705 Components ...........................................................................................................................................................43
H705 Enthalpy Setpoint ...................................................................................................................................................44
H705 Wiring Diagram .......................................................................................................................................................45
Section 5 - M7XXX Black Motor ..................................................................49
M7215, M7415, M7405 and M8405 Actuators .................................................................................................................50
Honeywell Economizers 63-8594-01
i
Section 6 - W7459 Economizer Module .....................................................53
W7459 Enthalpy Module Components .............................................................................................................................54
W7459A, B, C and D ........................................................................................................................................................56
W7459 Enthalpy Setpoint Chart .......................................................................................................................................57
High Limit Switching .........................................................................................................................................................58
W7459A Wiring Diagram .................................................................................................................................................59
Section 7 - W6210 And W7210 Economizer Modules ...............................63
W7210 Economizer System Components .......................................................................................................................64
W6210 and W7210 Components .....................................................................................................................................65
High Limit Function ................................................................................................................................................65
W7210 Actuator Connections ..........................................................................................................................................66
W7210 Wiring Diagrams ..................................................................................................................................................67
Section 8- W6215, W7215 And W7460 Economizer Modules ...................69
W7215 System Components ...........................................................................................................................................70
W6215, W7215 and W7460 Components ........................................................................................................................71
W7215B and W7460B Components ................................................................................................................................71
W6215, W7215, W7460 Inputs and Outputs ....................................................................................................................72
Input and Output Applications ..........................................................................................................................................72
Minimum and Maximum Settings .....................................................................................................................................73
Indoor Air Content Sensor Settings .................................................................................................................................74
Carbon Dioxide Sensor Setup .........................................................................................................................................75
Outdoor Air Content Sensor .............................................................................................................................................76
W6215, W7215 and W7460 Actuator Usage ...................................................................................................................77
W6215, W7215 and W7460 Wiring Diagram ...................................................................................................................78
Section 9 - W7212, W7213 and W7214 Economizer Modules ..................81
W7212 Economizer System Components .......................................................................................................................82
W7212, W7213, and W7214 Components .......................................................................................................................83
DCV Maximum Position Adjustment ......................................................................................................................84
Using Multiple CO2 sensors on the AQ-AQ1 terminals for zones .........................................................................85
Minimum Position Adjustment ...............................................................................................................................85
Dry bulb changeover .............................................................................................................................................86
W7212, W7213, and W7214 Wiring Diagram ..................................................................................................................87
Section 10 - W7340 and W7345 Economizer Module ................................93
W7340 Economizer System Components .......................................................................................................................94
W7340 and W7345 Components .....................................................................................................................................96
W7340 only ...........................................................................................................................................................97
Demand Control Ventilation (DCV) Sensor Input (W7340 only) ............................................................................97
Settings and Adjustment .......................................................................................................................................99
Wiring for W7340 and W7345 ........................................................................................................................................101
Section 11 - W7220 JADE™ Economizer Module ...................................103
W7220 Economizer System Components .....................................................................................................................104
W7220 Components ......................................................................................................................................................106
Wiring Application Examples .........................................................................................................................................109
W7220 (JADE™) Economizer Controller Used with Honeywell Prestige© IAQ 2.0 Thermostat ....................................129
Alarm Mode for Failed Components on the JADE™ economizer system ...........................................................129
W7220 Personal Computer Tool ....................................................................................................................................134
Section 12 - Sensors for Economizer Modules .......................................157
Sensor Features ............................................................................................................................................................158
Type of Sensors for Economizer ....................................................................................................................................159
C7150 and C7046 Mixed and Supply Air Sensors .........................................................................................................162
ii
Honeywell Economizers 63-8594-01
Mixed or Supply Air Sensor Control Sequence ..............................................................................................................163
Carbon Dioxide Sensor ..................................................................................................................................................163
JADETM Economizer (W7220) Sensors .........................................................................................................................164
Section 13 - Checkout ...............................................................................167
Standard Checkout Procedure .......................................................................................................................................168
Checkout W7212 ...........................................................................................................................................................168
Check out C7400 with W7459, W7210 and W7212 .......................................................................................................170
Check out for W7220 JADETM Economizer ...................................................................................................................172
Section 14 - Simulator for W7212 .............................................................173
Section 15 - Demo for W7220 ...................................................................177
Section 16 – Economizer Savings Estimator .........................................181
Section 17 - Retrofit and Upgrades ..........................................................183
Replacement of W7459Axxx and M7415Axxx with W7220A1000 (JADETM) and M7215A1008 ..................................188
Replacement of W7212Axxx with W7220A1000 (JADETM) ...........................................................................................191
Replacement of W7210Axxx with W7220A1000 (JADETM) ...........................................................................................193
Replacement of W859F with W7220A1000 (JADETM) and M7285A1045 .....................................................................195
Replacement of W957G with W7220A1000 (JADETM) and M7285A1045 ....................................................................197
W957G Replaced with W7220 and M7285A1045 Mod Motor .............................................................................198
Cross Reference ............................................................................................................................................................199
W7220 JADETM Y-Pack Table .......................................................................................................................................203
Section 18 - Appendix ...............................................................................207
Glossary .........................................................................................................................................................................207
Accessories for the M74XX Series Actuators ................................................................................................................210
Accessories for the W7220 JADETM Economizer Module ............................................................................................. 211
Honeywell Economizers 63-8594-01
iii
iv
Honeywell Economizers 63-8594-01
Section 1 - Ventilation
Section 1 - Ventilation
DAMPER
EX.
AIR
DAMPER
O.A.
DAMPER
MIXED AIR SECTION
1
FILTERS
M23621
Honeywell Economizers 63-8594-01
Section 1 - Ventilation
Indoor Air Quality
The characteristics of the indoor climate of a building, including the gaseous
composition, temperature, relative humidity, and airborne contaminants.
The Arab oil embargo of 1974 caused many
building designers to begin implementing
energy cost reduction measures. One of these
measures was to seal up the building shell to
reducing exfiltration of indoor air and the
resultant heat loss. Energy costs were
reduced but there was a significant negative
side effect that was not detected until 1988:
Indoor Air Quality. Many buildings constructed
prior to 1974 had sufficient leakage through
poorly sealed windows and doors to
adequately ventilate the building. Construction
Honeywell Economizers 63-8594-01
2
methods used between 1974 and 1988
substantially reduced this leakage. As a result
many buildings constructed between 1974 and
1988 are not adequately ventilated for the
occupants.
As the energy costs continue to rise into the
beginning of the 21st century, building
managers are seeking ways to reduce the
energy usage in new and existing buildings
and continue to provide a healthy environment
for the building occupants.
Section 1 - Ventilation
Healthy Air
Building-Related Illness
A diagnosable illness with identifiable symptoms whose cause can be
directly attributed to airborne pollutants within a building such as
Legionnaires disease or hypersensitivity pnuemonitis.
The American Society of Heating,
Refrigeration, and Air Conditioning Engineers
(ASHRAE) are engineers in the HVAC
industry who establish standards for the
mechanical equipment used to heat, cool and
ventilate buildings. Many local, state, national
and international buildings codes are based
on these standards. ASHRAE Standard
62.1,Ventilation for Acceptable Indoor Air
Quality, is the ventilation standard for
commercial buildings. It states “indoor air
quality is acceptable when there are no known
3
contaminants at concentrations determined to
be harmful to building occupants, as
determined by cognizant authorities, and
when a substantial majority (80% or more) of
those persons exposed to the indoor air do not
express dissatisfaction with its quality.” This
standard sets minimum outdoor air ventilation
rates and requires other measures intended to
provide indoor air quality that is both
acceptable to human occupants and
minimizes negative effects on health.
Honeywell Economizers 63-8594-01
Section 1 - Ventilation
Symptoms of Inadequate Ventilation
Headaches
Dizziness
Drowsiness
Fatigue
Nausea
Eye Irritation
Respiratory Irritation
Causes of poor indoor air quality are not
always caused by the design of the building.
Poor or improper maintenance such as
outdoor air dampers that are blocked open or
completely closed, defective damper actuators
or incorrectly set or malfunctioning controls
may also cause inadequate ventilation. Many
maintenance people respond to occupant
complaints with only temperature in mind. If
the room is within the acceptable temperature
Honeywell Economizers 63-8594-01
4
range of 68 to 78°F. (20 to 26°C) it is
perceived that no adjustments are necessary.
The occupants may have many of the
symptoms listed above but do not have the
knowledge to request “open the outside air
damper” or “increase the volume of supply air
to this room.” It is incumbent on the
knowledgeable HVAC service person to
recognize inadequate ventilation when it is
encountered.
Section 1 - Ventilation
Indoor Air Ventilation Standards
ASHRAE is continually updating the
ventilation standard (ASHRAE 62.1) to provide
guidelines for design and maintenance of
buildings. These standards are recommended
guidelines only and are not legal
requirements. However many state and local
codes use the ASHRAE standards as the
basis for building codes for new construction
and building occupancy. They also form a
basis for litigation in indoor air quality lawsuits.
Some measurements and gases referred to in
the standards may not be familiar to the
average person in the HVAC industry.
However the majority of the information
contained in these standards is very clearly
stated. Everyone in the HVAC industry should
be knowledgeable about the contents of these
standards.
The ventilation standard states a minimum
outdoor air ventilation rate required per person
per type of environment in Cubic Feet per
Minute (cfm). The ventilation requirement
varies between occupied and unoccupied
periods. Outdoor air dampers are set to a
minimum position based on the maximum
occupancy level for the space. To save energy
the ASHRAE 62.1 standard also allows
ventilation to be based on a CO2 sensor input
that determines occupancy. This is commonly
referred to as CO2-based demand control
ventilation (DCV).
CO2 Based Demand Control
Ventilation
outdoor air intake when the space is not
occupied to the maximum design occupancy
level. CO2-based DCV is an energy
conservation measure; its purpose is to
reduce outdoor air intake rates and the energy
required to condition the outdoor air when
spaces are not occupied at maximum design
densities.
For those who do not want to read an
engineering standard, ASHRAE offers a user
manual that:
• offers information on the intent and
application of Standard 62.1
• provides sample calculations and examples.
• provides useful reference materials.
• gives guidance to building operation and
maintenance personnel.
Standard 62.1 Ventilation
for Acceptable Indoor Air Quality
(ANSI Approved)
The Standard and User's Manual can be
ordered from:
CO2 is a fairly dependable indicator of the
concentration of the odorous bioeffluents
exhaled by human beings. Therefore we can
use CO2 concentration levels in a space to
determine the human occupancy and reduce
ASHRAE Publications Sales
1791 Tullie Circle, N.E.
Atlanta, GA 30329 or
www.ashrae.org
5
Honeywell Economizers 63-8594-01
Section 1 - Ventilation
Energy Standards
There are four ASHRAE standards that affect
energy use in buildings: Standard 90.1,
Standard 90.2, Standard 100 and Standard
189.
Standard 90.1 Energy Efficient Design of New
Buildings covers all buildings except low-rise
residential for new design and build. It has
been used for all buildings in the past due to
the lack of detail in Standard 100.
Standard 90.2 Energy Efficient Desin of New
Low-Rise Buildings covers low-rise residential
buildings and has lacked detail in the past.
The standards are used as the basis for many
federal, state and local jurisdictions as the
energy code. If a state does not use the
ASHRAE standards for the basis of the codes,
they will use the International Energy Code
Council (IECC) code.
In addition to the standards, ASHRAE has
developed a series of publications designed to
provide recommendations for achieving
energy savings over the minimum code
requirements of Standard 90.1 The guides
were developed in collaboration with The
American Institute of Architects (AIA), the
Illuminating Engineering Society of North
America (IES), the US Green Building Council
(USGBC) and the U.S. Dept of Energy (DOE).
All guides are free for download at the
ASHRAE website.
Standard 100 Energy Efficiency in Existing
Buildings is the energy standard for existing
buildings including residential. It was revised
in 2012 to include compliance requirements,
energy use analysis methods and energy
targets, operation and maintenance and
energy audit requirements for existing
buildings for energy efficiency. There is also
an extensive list of Energy Efficiency
Measures that can be incorporated into
existing buildings for energy efficiency.
Honeywell Economizers 63-8594-01
Standard 189 Design of High-Performance
Green Buildings except Low-Rise Residential
Buildings – developed in conjunction with the
US Green Buildings Council that goes beyond
the requirements of Standard 90.1 for “green”
buildings.
6
Section 1 - Ventilation
Ventilation Requirements
Ventilation is defined as the process of
bringing outside air into a building. The four
major reasons for ventilation are:
1. To ensure a healthy atmosphere for the
occupants. Ventilation is used to dilute
indoor contaminants and provide fresh air
for breathing.
2. To pressurize the building. Positive
pressure inside a building prevents
infiltration of unconditioned and unfiltered
outside air through openings.
3. To provide atmospheric cooling. Bringing
in cool outside air is more energy efficient
and less costly than using mechanical
cooling equipment.
4. To replace air that is being exhausted.
The term for this is make-up air.
Whenever air is exhausted, replacement
air must be provided.
ventilation system. Section 6 of ASHRAE 62.1
offers two procedures designers can use to
determine ventilation rates, the Ventilation
Rate Procedure (VRP) and the Indoor Air
Quality Procedure (IAQP).
The VRP method is based on typical spaces
and usage, the rates are intended to dilute and
exhaust bioeffluents from occupants and
building contaminants to satisfy the 80% of the
occupants of the space. There are two
sources of contaminants in a space that
ventilation is intended to reduce: Occupants
and their activities (e.g., use of office
equipment) and Off-gassing from building
materials. The ventilation rate in the breathing
zone (Vbz) required for both people related
sources (Vp) and building related sources (Va)
is:
Vbz = Vp + Va
Vp and Va both have two components; Vp is
the number of people in the space (Pz) times
the occupant comfort factor Rp (minimum
ventilation rate determined by extensive
studies for occupant comfort based on activity
level in the space) and Va is the area of the
space (Az) times the building component
factor Ra (minimum ventilation rate
determined by extensive studies for occupant
comfort based on type of space). Therefore
ventilation required in the breathing zone
becomes:
DAMPER
EX.
AIR
DAMPER
O.A.
Vbz = RpPz + RaAz
DAMPER
MIXED AIR SECTION
FILTERS
Rp and Ra values are found in ASHRAE 62.1
User’s manual (Table 6-A) and ASHRAE 62.1
Standard.
M23621A
The air controls in the mixing section of a
HVAC unit are used to maintain a minimum
ventilation volume at all times. This is in
addition to controlling the dampers for
atmospheric cooling.
Determining the amount of ventilation required
for a space is probably one of the hardest
tasks an engineer faces in the design of the
7
The outdoor air or recirculated air may be
cleaned using a filter or air cleaner but the
outdoor air ventilation rates cannot be reduced
below the rate determined by the above
formula.
Honeywell Economizers 63-8594-01
Section 1 - Ventilation
For a single zone system VOT (outdoor
ventilation) is the same as Vbz. For multiple
zone systems a zone air distribution system
effectiveness (E) factor needs to be used in
the calculation of the VOT. See ASHRAE
Standard 62.1 for method.
The IAQP method is used for spaces where
the designers target a specific contaminant
and control the concentration level of the
contaminant. This method has two
requirements: Maintain concentration of
specific contaminant(s) below target
concentration limits and achieve a design
target of perceived indoor air quality
acceptability. The IAQP method allows
ventilation rates to be lower than the rates
required by the VRP method if it can be
demonstrated the resulting air quality can
meet the required criteria.
The IAQP procedure has 4 steps:
• Identify the contaminants of concern.
• Determine acceptable concentration of
contaminant(s).
• Specify the perceived indoor air quality
criteria.
• Apply an acceptable design approach to
achieve the performance criteria.
Additional information on ventilation and the
two methods used to determine the ventilation
rates can be found in ANSI/ASHRAE Standard
62.1 and in the User’s manual for ANSI/
ASHRAE Standard 62.1. Both documents are
available on the ASHRAE website at
http://resourcecenter.ashrae.org/store/ashrae/
Example using the VRP method: Office space
of 6600 sq. feet with maximum occupancy of 7
persons per 1000 ft2.
Vbz = RpPz + RaAz where
Rp = 5 cfm per person
(Table 6-A ASHRAE 62.1 User’s Manual)
Pz = 7 person per 1000 ft2 x Az
Ra = 0.06 cfm per ft2
(Table 6-A ASHRAE 62.1 User’s Manual)
Az = 6600 ft2.
Vbz = 5 ft3 / min/person x 7 persons/1000 ft2 x
6600 ft2 + 0.06 ft3/ min/ft2 x 6600 ft2
= 231 cfm + 396 cfm
=627 cfm
Honeywell Economizers 63-8594-01
8
In our example during maximum occupancy
the ventilation is 627 cfm. When the
occupancy rate is less than the maximum
occupancy, the ventilation rate can be
adjusted to a lower occupancy and the
ventilation increased as the CO2 level in the
space increases. This can be done following
these steps:
• Calculate the VOT.
• Use Vbz = RpPz + RaAz, where Pz = 0. This
is the new ventilation rate Vat (the area
building based component).
• Add a CO2 sensor to the space.
• Adjust the CO2 maximum to the Vbz (for
maximum occupancy).
• Adjust the minimum position for occupancy
for Va.
In our example the Vbz ventilation is 627 cfm
and the minimum position (Va) is 396 cfm.
Using a CO2 sensor for Demand Control
Ventilation, the new minimum position is set
for 396 cfm and the maximum damper position
for occupancy ventilation is 627 cfm. When
one person enters the space or the
commercial thermostat goes into occupancy
mode, the outdoor air dampers will open to
bring in 396 cfm of outdoor air. As space
occupancy increases, the CO2 level will
increase and the outdoor air dampers will
modulate open to the maximum of 627 cfm of
outdoor air.
NOTE: When the commercial thermostat calls
for free cooling using an economizer,
the dampers are still allowed to
override the DCV maximum position
for ventilation and open the damper
100% open for maximum free cooling.
Section 1 - Ventilation
Air Handler Control Loops
DAMPER
RETURN AIR
FROM ROOM
EX.
AIR
HEATING COIL
DAMPER
MIXED
AIR
O.A.
DAMPER
SUPPLY
AIR TO
BUILDING
FILTERS
COOLING COIL
CONDITIONING
SECTION
MIXED AIR
SECTION
FAN
FAN
SECTION
TERMINAL
SECTION
M23889A
There are typically four sections of an air
handler. The Mixed Air Section is where
return air and outside air are combined
(mixed). Note some systems’ fans may be
100% return air or 100% outside air and will
not have a mixed air section.
In the Fan Section on the air handler shown
there is a supply fan. On other air handlers
there may be a return or exhaust fan. The
supply fan on this unit is referred to as a pullthrough because it is located on the outlet of
the coils. If it were located in front of the coils
then it would be a push-through fan.
The Conditioning Section commonly
contains filtration, heating, cooling and
humidification. The filters and heating and
cooling coils are located in the conditioning
section of the air handler.
The Terminal Section is composed of all the
components between the central fan and the
zones.
9
Honeywell Economizers 63-8594-01
Section 1 - Ventilation
Basic Economizer Control
DAMPER
EXHAUST
AIR
RETURN AIR
FROM ROOM
DAMPER
R
B
C
O
A
DAMPER
MOTOR
D
R
1
3
6
R
H705
ENTHALPY
CONTROL
DAMPER
LINKAGE
OUTSIDE
AIR
SUPPLY
AIR TO
BUILDING
F
1 0
1
0
30
F
40
0
1 0
1
2
0
14
5
0
6
7
100
80
70
0
6
0
1 0
6
4
F
1 0
PROPORTIONAL
MINIMUM POSITION
CONTROL FOR
ECONOMIZER TWO-POSITION
OUTSIDE AIR
HIGH LIMIT. CLOSES OUTSIDE
DAMPERS
AIR DAMPERS TO MINIMUM WHEN
OUTSIDE AIR TEMPERATURE
IS HIGHER THAN 70˚F (21 C)
Shown is the most basic temperature based
economizer control configuration. An
averaging element mixed air controller with
the sensing element is located in the duct
before the cooling or heating coils and
maintains the mixed air at 55°F (13°C). A two
position limit controller with sensing element in
outdoor air is used to close the outside air
dampers to a minimum position if the outdoor
air temperature is too warm to use for cooling.
There is a minimum position control on most
air handlers. The function of this control is to
ensure proper ventilation. The control provides
adjustable damper positioning between 0 and
100%. The outdoor damper position must be
set for minimum ventilation requirements
based on building occupancy as defined by
state or local code.
Honeywell Economizers 63-8594-01
10
PROPORTIONAL MIXED
AIR CONTROLLER.
SETPOINT 55˚F (13 C)
M23916A
NOTE: A setting of 25% does not produce
25% airflow because the flow through
dampers is nonlinear.
It is important to know how much outside air is
being brought into a building through the
outdoor dampers on the air handlers. When
the return and mixed air temperatures can be
measured there is a formula used to calculate
the settings that will provide the desired
quantity of outside air.
Using the formula Vbz = Vp we know the total
ventilation and volume required. A second
formula is used to calculate the mixed air
temperature when the outside air temperature,
the return air temperature and the required
percentage of outside air are known.
Section 1 - Ventilation
Mixed Air Formulas
“OA”
“MA”
MIXED
AIR
SENSOR
C7400S
SENSOR
“RA”
MS3103
ACTUATOR
ECONOMIZER
COMMERCIAL
THERMOSTAT
M23917A
Return Air
Temperature
Return Air
Temperature
_
_
Mixed Air
Temperature
Outdoor Air
Temperature
x 100% =
Volume (%) of
Outside Air
Formula for Measuring the Percentage of Outside Air in an Air Handler.
This formula is used to determine the
percentage of outside air (by volume) being
brought into a building from the outside. The
OA dampers can be adjusted by measuring
the MA, OA and RA to balance the correct
Vbz. It is a test that should be conducted
during routine maintenance to ensure that the
Return Air
Temperature
X
% of
Return
Air
+
correct percentage of ventilation is being
provided. Note the fan must be running with
the panels on the unit to take these
measurements. Drill a hole in the side of the
unit and insert temperature probe to measure
the MA temperature. The hole must be sealed
when measurements are completed.
Outside Air
Temperature
X
% of
Outside
Air
=
Temperature
of Mixed Air
Formula for Adjusting the Minimum Position Control.
This formula is used to make adjustments to
the mixed air controls. In ASHRAE 62.1 there
are two components of the percent of outdoor
air ventilation required, the human component
and the buildings effluent component. The
rates in the standard are based on the type of
human activity normally performed in the
building. For example: the base rate for office
buildings is 5 cfm per person and the building
11
effluent rate is 0.06 cfm per square foot of
space. Initially only two temperatures are
measured, return and outside air. The
minimum position control is then adjusted until
the mixed air temperature is equal to the result
of the formula. For design requirements for
CFM per person for all building types, refer to
ASHRAE standard 62.1 section 6 and/or local
or state building codes.
Honeywell Economizers 63-8594-01
Section 1 - Ventilation
Outside Air Percentage Chart
MIXED and RETURN AIR TEMPERATURES
-29 C
-20 F
%
O
U
T
S
I
D
E
-23
-10
-18
0
-12
10
-7
20
-1
30
4
40
10
50
16
60
21
70
27
80
32
90
38
100
43 49 C
110 120 F
0%
0%
10%
10%
20%
20%
30%
30%
40%
40%
50%
50%
60%
60%
A 70%
I
R 80%
70%
90%
90%
O
U
T
S
I
D
E
A
I
80% R
100%
-20 F
-29 C
%
100%
-10
-23
0
-18
10
-12
20
-7
30
-1
40
4
50
10
60
16
70
21
80
27
90
32
100
38
110 120 F
43 49 C
OUTSIDE AIR TEMPERATURE
M25274A
This chart can also be used for measuring the
percentage of outside air on an air handler.
The same three temperatures are measured
per the formulas on the preceding page. Lines
are drawn on the chart using a ruler. As with
the formulas this chart is most effective if there
is at least a 10 degree F difference between
the return and outside air. This will typically
require either a warm or cold day rather than
moderate weather. It is more accurate to
measure outside air percentage on a day
Honeywell Economizers 63-8594-01
12
when the outside temperature is 10°F (-12°C)
rather than on a day when it is 70°F (21°C). If
the temperature difference between the return
and outside air is only a few degrees, a small
error in measurements can alter the results by
as much as 50% using this method. If the
temperature difference is 40 or 50°F (22 or
28°C) small errors in measurement do not
substantially affect the results of the
calculations.
Section 1 - Ventilation
Example 1: Using the Outside Air Percentage Chart
OUTSIDE
AIR
CHART
MIXED AIR TEMP
59 F (15 C)
OUTSIDE AIR TEMP
25 F (-4 C)
RETURN AIR TEMP
70 F (21 C)
MIXED and RETURN AIR TEMPERATURES
-29 C
-20 F
-23
-10
-18
0
-12
10
-7
20
-1
30
4
40
10
50
16
60
21
70
27
80
0%
38
100
43 49 C
110 120 F
Measure the
return air
temperature.
1
Measure the mixed air
10% temperature. This should be
%
done in 4 or more locations and
20% averaged.
O
U
T
S
I
D
E
32
90
4
0%
10%
%
20%
O
5
30%
At the point of
intersection draw a
line to the left till the
50%
percentage of outside
air is indicated.
60%
40%
6
Draw a line straight
30% U
down from the mixed air
T
temperature till it
40% S
intersects the line that
was just drawn.
I
50%
D
E
60%
A 70%
I
R 80%
3
2
90%
70% A
Draw a line from the return
I
air on top to the outside air on
the bottom.
80% R
Measure the outside air temperature. 90%
100%
-20 F
-29 C
100%
-10
-23
0
-18
10
-12
20
-7
30
-1
40
4
50
10
60
16
70
21
80
27
90
32
100
38
110 120 F
43 49 C
OUTSIDE AIR TEMPERATURE
M25275A
1. Measure the return air temperature.
According to the results from this chart this air
handler is supplied with 26% outside air. If the
total supply volume is 20,000 cubic feet per
minute (cfm) (566 m3/min) then:
2. Measure the outside air temperature.
3. Draw a line from the return air
temperature to the outside air
temperature.
0.26 X 20,000 cfm of total supply air equals
5,200 cfm of outside air (147 m3/min).
4. Measure the mixed air temperature in
multiple locations and determine the
average.
This indicates that when the measurements
were done on this air handler the total volume
of outside air in the mixed air was 5,200 cfm of
outside air (147 m3/min).
5. Draw a line down from the mixed air
temperature to the point where it
intersects the first line.
6. Draw a line from the point of intersection
to the outside air percentage on the left
side of the chart.
13
Honeywell Economizers 63-8594-01
Section 1 - Ventilation
Example 2: Use of Outside Air Chart on a Warm Day
OUTSIDE
AIR
CHART
MIXED AIR TEMP
75 F (24 C)
OUTSIDE AIR TEMP
84 F (29 C)
RETURN AIR TEMP
71 F (22 C)
MIXED and RETURN AIR TEMPERATURES
-29 C
-20 F
-23
10
-18
0
-1
30
4
40
10
50
16
60
21
70
27
80
30%
A 70%
I
R 80%
90%
10%
5
6
Measure the mixed
air temperature.
This should be
done in 4 or more
locations and
averaged.
20%
Measure the
outside air
temperature.
70%
3
At the point of
intersection draw a
line to the left till
the percentage of
outside air is
indicated.
Draw a line
from the return
air on top to the
outside air on
the bottom.
2
100%
-20 F
-29 C
43 49 C
110 120 F
4
40%
60%
38
100
0%
Draw a line straight down from the
mixed air temperature till it intersects
the line that was just drawn.
50%
32
90
1
10%
20%
O
U
T
S
I
D
E
-7
20
Measure the return air
temperature.
0%
%
-12
10
%
O
U
T
40% S
I
50%
D
E
60%
30%
A
I
80% R
90%
100%
-10
-23
0
-18
10
-12
20
-7
30
-1
40
4
50
10
60
16
70
21
80
27
90
32
100
38
110 120 F
43 49 C
OUTSIDE AIR TEMPERATURE
M25276A
The chart can also be used on a warm day
when the outside air temperature exceeds
both the return and the mixed air
temperatures. The first line drawn will slant in
Honeywell Economizers 63-8594-01
14
a different direction. Once again it is best to do
this test when there is a minimum of 10
degrees F difference between the outside and
return air.
Section 1 - Ventilation
Extra Outside Air Percentage Chart
MIXED AIR TEMP
OUTSIDE AIR TEMP
RETURN AIR TEMP
OUTSIDE
AIR
CHART
%
-29 C
-20 F
0%
-23
-10
-18
0
-7
20
-1
30
4
40
50
10
10
50
60
16
16
60
70
21
21
70
80
27
27
80
90
32
32
90
100
38
38
100
MIXED and RETURN AIR TEMPERATURES
-12
10
40
4
30%
40%
0%
43 49 C
110 120 F
60%
80%
60%
50%
A 70%
I
R 80%
90%
110 120 F
43 49 C
%
70% A
I
R
90%
O
30% U
T
40% S
I
50%
D
E
10%
30
-1
10%
20
-7
20%
10
-12
Honeywell Economizers 63-8594-01
15
20%
0
-18
100%
O
U
T
S
I
D
E
-10
-23
100%
-20 F
-29 C
OUTSIDE AIR TEMPERATURE
M25277A
Section 1 - Ventilation
Example 3: Minimum Ventilation Adjustment
EXHAUST
AR
DAMPER
RETURN
AR
73 F (23 C)
DAMPER
OUTSIDE
AR
30 F (-1 C)
M23910
1. Specifications:
Office space - 100,000 ft2
Air handler capacity 20,000 cfm
(566 m3/min.)
People in area - 250
3. Ventilation percentage:
7250 cfm (205.3 m3/min)/20,000 cfm
(570 m3/min)
VOT maximum position= 36%
6000 cfm (169.9 m3/min)/20,000 cfm
(570 m3/min)
VOT Minimum position= 30%
2. Ventilation (VOT) required:
= 250 x 5 cfm + 0.06 cfm/ft2 x 100,000 ft2
= 1250 cfm + 6000 cfm
= 7250 cfm
Where Vat = 0.06 cfm/ft2 x 100,000 ft2.
Therefore Vat = 6000 cfm
4. Measure the return air temperature:
73°F (23°C).
5. Measure the outside air temperature:
30°F (-1°C).
This example shows a procedure for adjusting
the DCV maximum and minimum positions.
Honeywell Economizers 63-8594-01
16
Section 1 - Ventilation
RETURN
AIR
73˚F (23 C)
FILTERS
OUTSIDE
AIR
30˚F (-1 C)
SUPPLY
AIR
+
S
SUPPLY OR
MIXED AIR
SENSOR
COILS
FAN
ADJUST THIS SETTING
UNTIL THE MIXED AIR
IS 62.5˚F (17 C)
COMMERCIAL
THERMOSTAT
M23918A
Return Air
Temperature
% of
Return
Air
X
+
Outside Air
Temperature
% of
Outside
Air
X
=
Temperature
of Mixed Air
6. Use the mixed air temperature formula or the graph to determine the Demand Control
Ventilation maximum MAT:
73°F (23°C)
X
64%
46.7°F (8.2°C)
+
30°F (-1°C)
+
X
36%
=
10.8°F (-11.8°C)
Temperature of
Mixed Air
57.5°F (14.2°C)
7. Use the mixed air temperature formula or the graph to determine the minimum position MAT:
73°F (23°C)
X
60%
43.8°F (8.2°C)
+
30°F (-1°C)
+
X
12°F (-11°C)
8. Close the outside air dampers. The
method used for this depends upon the
controller being used.
9. When using analog economizers, turn the
DCV maximum position control (pot) until
the measured mixed air temperature is
57.5°F (14.2°C). When using the JADETM
controller, go to the set point menu and
adjust the Vent max setting and the up
and down arrows on the keypad.
30%
=
Temperature of
Mixed Air
55.8°F (13.2°C)
11. Close the outside air dampers. On the
analog economizers, turn the minimum
position control (pot) until the measured
mixed air temp is 55.8 °F (13.2°C). When
using the JADETM controller, go to the set
point menu and adjust the Vent min
setting using the up and down arrows on
the keypad.
12. Mark this setting on the control as being
30% outdoor air.
10. Mark this setting on the control as being
36% outdoor air.
17
Honeywell Economizers 63-8594-01
Section 1 - Ventilation
Example 4: Ventilation Review Questions
EXHAUST
AIR
DAMPER
RETURN
AIR
68 F (20 C)
30,000 CFM
(849 M3 MIN.)
OUTSIDE
AR
21 F (-6 C)
M23920
4. Measure the return air temperature:
68°F (20°C)
1. Specifications:
Office space - 200,000 ft2.
Air handler capacity - 30,000 cfm
(849 m3/min)
People in area - 350
5. Measure the outside air temperature:
21°F (-6°C)
2. Ventilation required:
=350 x 5 cfm per person + 0.06 cfm/ft2 x
200,000 ft2
=1750 cfm + 12,000 cfm
=13750 cfm
3. Ventilation percentage:
13750 cfm (389.4 m3/min)/30,000 cfm
(849 m3/min)
Honeywell Economizers 63-8594-01
18
This is the air handler for an office building
with 350 people maximum occupancy.
Complete the required steps in the procedure
to adjust the controls for the correct volume of
ventilation.
Section 1 - Ventilation
RETURN
AIR
68˚F (20 C)
FILTERS
OUTSIDE
AIR
21˚F (-6 C)
SUPPLY
AIR
+
S
SUPPLY OR
MIXED AIR
SENSOR
ADJUST THIS SETTING
UNTIL THE MIXED AIR
IS ___˚F (___ C)
CONTROLLER
COMMERCIAL
THERMOSTAT
M23919B
Return Air
Temperature
X
% of
Return Air
Outside Air X
% of
+ Temperature
Outside Air =
Temperature
of Mixed Air
6. Use the mixed air temperature formula or the graph:
68°F (20°C)
X
____%
_____°F (____°C)
+
21°F (-6°C)
+
X
____%
_____°F (_____C)
=
Temperature of
Mixed Air
_____°F (____°C)
menu and adjust the Vent max setting
using the up and down arrows on the
keypad.
NOTE: Note use this formula to determine
DCV maximum MAT and Minimum
position MAT.
9. Mark this setting on the control as being
36% outdoor air.
7. Close the outside air dampers to the
minimum position.
The method used for this depends upon
the controller being used.
8. On analog economizers, turn the DCV
maximum control (potentiometer) until the
measured mixed air temperature is
_____°F (_____°C). When using the
JADETM controller, go to the set point
10. On analog economizers, turn the
minimum position until the measured
mixed air temperature is _____°F
(_____°C). When using the JADETM
controller, go to the set point menu and
adjust the Vent min setting using the up
and down arrows on the keypad.
11. Mark this setting on the control as being
_____% outdoor air.
12. Restore all settings and setpoints.
19
Honeywell Economizers 63-8594-01
Section 1 - Ventilation
Economizer Cycle Definition
ECONOMIZER CONTROLLER
YES
SINGLE STAGE COOLING
OUTSIDE
AIR COOL?
NO
OPEN OUTSIDE
AIR DAMPER
FIRST
STAGE COOL
Y1
Y2
MECHANICAL
COOL 1
SECOND
STAGE COOL
COMMERCIAL THERMOSTAT
COMPRESSOR
M13816A
On a First Call for Cooling From
Commercial Thermostat (Y1)
hold the temperature between -1F and +1F of
the MAT setpoint. For example if the MAT is
set to 53F, the damper will hold between 52F
and 54F.
Controller signal is routed to the economizer
logic module.
When the mixed or supply air goes below 50°F
(10°C) the damper is modulated towards
closed (52°F for JADETM in our example).
IF THE OUTDOOR AIR IS SUITABLE FOR
FREE COOLING:
With analog economizers the actuator
modulates the outdoor damper open until the
room temperature is cool enough to satisfy the
call for cooling and maintain the mixed or
discharge air between 50 and 55°F (10 and
13°C). With the JADETM controller the actuator
modulates the OA damper open to maintain
the MAT setpoint. The MAT default is 53F with
a 2F differential. The MAT setpoint can be
changed in the menu using the up and down
arrows on the JADETM.
For the analog economizers the MAT setpoint
is not adjustable, the range can be changed
using external resistance. For the JADETM, the
MAT is adjustable between 38°F and 70°F.
IF THE OUTDOOR AIR IS NOT SUITABLE
FOR FREE COOLING:
The first stage of the cooling compressor is
turned on and the dampers are set to
minimum for occupancy requirements (Vat if
using DCV, VOT if no DCV).
When the mixed or discharge air is between
50 and 55°F (10 and 13°C) the actuator will
hold damper position with analog
economizers, with JADETM the actuator will
Honeywell Economizers 63-8594-01
When the mixed or supply air goes above
56°F (13°C) the damper is modulated towards
open (54°F for JADETM in our example).
20
Section 1 - Ventilation
Single and Two Stage Cooling With Economizer
ECONOMIZER CONTROLLER
YES
TWO STAGE COOLING
OUTSIDE
AIR COOL?
NO
Y1
OPEN OUTSIDE
AIR DAMPER
FIRST
STAGE COOL
MECHANICAL
COOL 1
Y2
SECOND
STAGE COOL
MECHANICAL
COOL 2
COMMERCIAL THERMOSTAT
COMPRESSORS
M13817A
On a Call for Second Stage Cooling
Controller signal is routed to the economizer
logic module.
IF THE OUTDOOR AIR IS SUITABLE FOR
FREE COOLING AND THE OUTSIDE AIR
DAMPERS ARE OPEN:
The economizer logic turns on the first stage
of mechanical cooling for the second stage of
cooling required by the commercial
thermostat. With JADETM the actuator drives
the OA damper wide open to try to satisfy the
call for second stage of cooling. If OA
dampers are 100% open and call for second
stage is not satisfied then the JADETM will turn
on the second stage mechanical cooling and
the OA damper will remain wide open.
NOTE: JADETM has an option in the
Advanced setup menu "STG3 DLY"
which is a delay after the stage 2 for
21
cooling has been active for a
programmed amount of time. If the
space has not been satisfied after the
programmed amount of time, the
JADETM turns on the 2nd stage of
mechanical cooling to allow 3 stages
of cooling, 1 economizer and 2
mechanical. This feature can also be
turned off.
IF THE OUTDOOR AIR IS NOT SUITABLE
FOR FREE COOLING:
The first stage cooling compressor is on, and
the logic module turns on the second stage of
mechanical cooling.
NOTE: A commercial thermostat with a
minimum of two stages of cooling is
required. The first stage must be
available for economizing if outside air
is suitable.The OA dampers must be
opened completely on a second call
for cooling before the mechanical
cooling is turned on.
Honeywell Economizers 63-8594-01
Section 1 - Ventilation
Honeywell Economizers 63-8594-01
22
Section 2 - Enthalpy Theory And Controllers
Section 2 - Enthalpy Theory And Controllers
50 BTU/LB
116 k-J/kg
90
%
%
25 BTU/LB
RH
58 k-J/kg
5
20 BTU/LB
60
15
55
BTU/LB
34.8 kJ/kg
50
45
35
40
F(
27
F(
13
C
F(
10
C)
F(
7C
)
F(
16
WE
)W
ET
TB
U
F(
WE
4C
TB
F(
)W
UL
2C
ET
) W
B
BU
ET
LB
BU
LB
4
C)
WE
BU
WE
C)
60
%
69.7 k-J/kg
46.4 k-J/kg
C)
%
80
RH
30 BTU/LB
F(
29
70
SA
T
81.4 k-J/kg
F(
32
C)
WE
T
RH
UR
35 BTU/LB
85
80
AT
IO
92.8 k-J/kg
RH
N-
40 BTU/LB
90
10
0%
104.5 k-J/kg
RH
RH
45 BTU/LB
TB
UL
B
0%
0%
30
LB
F(
24
RH
70
RH
%
65
RH
20%
LB
75
C)
F(
21
C
F(
18
WE
C)
TB
U
B
LB
LB
TB
UL
B
WE
H
10% R
LB
TB
UL
TB
U
WE
) W
E
BU
TB
U
LB
40 F
50 F
60 F
70 F
80 F
90 F
100 F
110 F
120 F
4 C
10 C
16 C
21 C
27 C
32 C
38 C
43 C
49 C
35 F
45 F
55 F
65 F
75 F
85 F
95 F
105 F
115 F
2 C
7 C
13 C
18 C
24 C
29 C
35 C
41 C
46 C
DRY BULB TEMPERATURES
M25280
23
Honeywell Economizers 63-8594-01
Section 2 - Enthalpy Theory And Controllers
The Psychrometric Chart
(274 meters per minute). The evaporation of
the water causes the temperature to drop, this
may also be referred to as the “evaporation
effect.” When the temperature stops falling
that is the wet bulb temperature. The sling
psychrometer is a common instrument used to
determine the wet bulb temperature although
there are other methods now available.
This is a psychrometric chart. To use the chart
effectively the thermodynamic properties of air
must be known. Some common terms are:
Dry Bulb Temperature
The temperature read directly on an ordinary
thermometer.
Dry bulb and wet bulb are the two most readily
measurable variables on the chart and when
known can be used to determine all other
properties on the psychrometric chart.
Wet Bulb Temperature
90
RH
RH
RH
RH
45
35
40
F(
7C
F(
10
C)
C)
C)
WE
WE
TB
U
LB
TB
UL
B
)W
C)
TB
UL
WE
ET
75
F(
27
C)
F(
24
RH
70
RH
%
30
65
RH
20%
TB
UL
B
F(
)W
BU
2C
LB
ET
) W
B
ET
UL
BU
B
LB
F(
4C
RH
%
%
40
WE
F(
29
%
%
50
F(
13
WE
TB
U
70
80
60
55
F(
16
)
%
UR
SA
T
50
60
F(
32
C
90
%
85
80
AT
IO
N-
10
0%
RH
The temperature read on a thermometer
whose bulb is encased in a wet wick and with
air blown across the wick at 900 ft. per minute
F(
21
WE
C)
WE
F(
18
C)
TB
UL
B
TB
U
WE
H
10% R
LB
TB
UL
B
WE
C)
B
LB
TB
UL
B
40 F
50 F
60 F
70 F
80 F
90 F
100 F
110 F
4 C
10 C
16 C
21 C
27 C
32 C
38 C
43 C
120 F
49 C
35 F
45 F
55 F
65 F
75 F
85 F
95 F
105 F
115 F
2 C
7 C
13 C
18 C
24 C
29 C
35 C
41 C
46 C
DRY BULB TEMPERATURES
M25278
63-8594-01 Honeywell Economizers
24
Section 2 - Enthalpy Theory And Controllers
Relative Humidity and Saturation
Relative Humidity
Saturation
Relative Humidity is the ratio of the measured
amount of moisture in the air to the maximum
amount of moisture the air can hold at the
same temperature and pressure. Relative
humidity is expressed in percent of saturation.
Air with a relative humidity of 35%, for
example, is holding 35 percent of the moisture
that it is capable of holding at that temperature
and pressure.
The point at which the relative humidity
reaches 100% and no more moisture can be
contained in the air is the saturation point. The
relative humidity and saturation lines are the
only curved lines on this psychrometric chart.
RH
%
90
RH
85
F(
32
C)
WE
T
F(
29
%
RH
80
F(
27
60
55
50
F(
13
F(
10
C)
F(
16
C)
C)
WE
TB
UL
B
TB
UL
F(
W
B
7C
ET
40
)W
B
F
UL
35
(4
E
T
C)
B
F(
BU
WE
2C
LB
) W
TB
ET
UL
BU
B
LB
45
RH
0%
%
40
WE
WE
70
SA
T
5
60
C)
%
RH
UR
80
AT
%
IO
N-
10
0%
RH
90
30
75
F(
24
RH
70
RH
%
65
RH
20%
F(
21
F(
18
C)
WE
C)
WE
C)
TB
U
50 F
60 F
70 F
80 F
90 F
100 F
110 F
4 C
10 C
16 C
21 C
27 C
32 C
38 C
43 C
45 F
55 F
2 C
7 C
13 C
LB
B
TB
UL
B
40 F
35 F
B
LB
TB
UL
WE
H
10% R
LB
TB
UL
TB
U
WE
C)
BU
120 F
49 C
65 F
75 F
85 F
95 F
105 F
115 F
18 C
24 C
29 C
35 C
41 C
46 C
DRY BULB TEMPERATURES
M25279
25
Honeywell Economizers 63-8594-01
Section 2 - Enthalpy Theory And Controllers
Enthalpy
Latent Heat
The measure of heat used in the United States
today is the British Thermal Unit or BTU. This
is the amount of heat required to raise the
temperature of one pound of water by one
degree Fahrenheit. A metric unit is the joule.
There are 1055 joules per BTU.
Heat required to change water to vapor
(steam) without change in temperature or
pressure is latent heat. It is also called heat of
vaporization. When water is vaporized the
latent heat passes into the air, and when vapor
condenses, latent heat is removed.
Sensible Heat
Total Heat (Enthalpy)
Heat that changes the temperature of the air
without changing its moisture content or dew
point temperature is sensible heat. Heat
added by a heating coil is sensible heat. Heat
removed by a cooling coil that remains dry is
also sensible heat.
The sum of sensible and latent heat and is
commonly referred to as enthalpy. Enthalpy is
often referred to as the total heat content of
the air.
50 BTU/LB
116 k-J/kg
90
%
80
AT
25 BTU/LB
RH
58 k-J/kg
5
20 BTU/LB
60
15
55
BTU/LB
34.8 kJ/kg
F(
27
60
%
69.7 k-J/kg
46.4 k-J/kg
50
F(
13
F(
10
C
F(
16
C)
C)
WE
TB
UL
B
TB
UL
) W
F(
B
7C
ET
40
)W
B
F
UL
35
(4
E
T
C)
B
F(
BU
WE
2C
LB
) W
TB
ET
UL
BU
B
LB
45
0%
%
40
WE
C)
WE
%
80
RH
30 BTU/LB
F(
29
BU
TB
U
70
SA
T
81.4 k-J/kg
F(
32
C)
WE
T
RH
UR
35 BTU/LB
85
%
IO
92.8 k-J/kg
RH
N-
40 BTU/LB
90
10
0%
104.5 k-J/kg
RH
RH
45 BTU/LB
30
75
F(
24
RH
70
RH
%
65
RH
20%
F(
21
C)
WE
C)
TB
U
WE
C)
WE
F(
18
C)
50 F
60 F
70 F
80 F
90 F
100 F
110 F
4 C
10 C
16 C
21 C
27 C
32 C
38 C
43 C
45 F
55 F
2 C
7 C
13 C
LB
LB
B
TB
UL
B
40 F
35 F
LB
TB
UL
WE
H
10% R
TB
U
LB
120 F
49 C
65 F
75 F
85 F
95 F
105 F
115 F
18 C
24 C
29 C
35 C
41 C
46 C
DRY BULB TEMPERATURES
M25280
63-8594-01 Honeywell Economizers
26
Section 2 - Enthalpy Theory And Controllers
Psychrometric Chart of
Enthalpy Economizer Control
A standard dry bulb economizer discussed
earlier causes the air handler to switch over
from outside air to return air at the setpoint of
the outside air high limit. This will vary based
on the climate. According to ASHRAE 90.1,
the changeover temperatures for the US are
65F, 70F and 75F based on the region of the
country. Dry bulb economizers only control the
outside air dampers based on temperature. If
27
it is a cool but rainy day, the outside air will be
brought in and extra cooling capacity will be
required to dehumidify it or the humidity will be
released into the ducts or occupied space.
Enthalpy economizers take temperature and
humidity into account. With enthalpy control,
humid air below a conventional dry bulb
temperature setpoint is locked out. Cooling
costs are lowered in most climates when using
enthalpy instead of dry bulb temperature with
the economizer.
Honeywell Economizers 63-8594-01
Section 2 - Enthalpy Theory And Controllers
Single Sensor Enthalpy Control
There are two enthalpy control strategies
available: single and differential enthalpy
control.
The single enthalpy control uses one enthalpy
sensor located in the outdoor air in any
orientation that exposes it to freely circulating
air and protects it from rain, snow and direct
sunlight. The enthalpy sensor replaces the dry
bulb high limit used in a standard economizer.
Instead of switching the mixed air control loop
from outdoor to return air at a preset outdoor
air dry bulb temperature, on a call for cooling
from the controller or commercial thermostat
the economizer logic module compares the
outdoor enthalpy to a preselected setpoint.
The value of the setpoint is illustrated on the
psychrometric chart on page 57 with curves
labeled as A, B, C or D. The setpoint selected
will vary based on climate, activities in the
controlled area and the type of mechanical
equipment used to provide cooling. An
installer can choose a more aggressive
setpoint A for more free cooling or a
conservative setpoint D for less free cooling.
Care needs to taken to select the correct
curve for comfort and to control the humidity to
prevent indoor air quality and other issues
caused by high humidity in a building. The
mixed air sensor, located in the area where
the return and outdoor air mix, maintains the
mixed air temperature between 50 and 56°F
(10.0 and 12.8°C). Refer to the Product Data
sheet (Form 63-2100) figures 17 and 18 for
method of changing range of MA set points.
When using the JADETM the analog curves are
changed to control to dry bulb temperature,
enthalpy and dew point based on ES
boundaries as shown on modified
psychrometric chart and table on page 57.
JADETM controls to +/- 1°F of selected MA
setpoint (adjustable between 38 to 70°F;
increment by 1) differential versus the 50-55F
range of an analog economizer.
SINGLE SENSOR OR HIGH LIMIT ENTHALPY
OUTSIDE
AIR SENSOR
SUPPLY
AIR TO
BUILDING
MIXED OR
SUPPLY AIR
SENSOR
COILS
FAN
W7220 ECONOMIZER
CONTROLLER
WITH DEMAND
CONTROL
VENTILATION
TB8220
COMMERCIAL
PRO
C7400S
ENTHALPY
SENSOR
63-8594-01 Honeywell Economizers
COOLING AND HEATING CONTROLLED FROM COMMERCIAL
THERMOSTAT. ENTHALPY ECONOMIZER CONTROLLER
FUNCTIONS AS FIRST STAGE OF COOLING.
C7400S ENTHALPY SENSORS ARE WIDELY USED WITH HONEYWELL
CONTROLLERS. IT COMBINES BOTH TEMPERATURE AND HUMIDITY
MEASUREMENTS INTO ONE DEVICE. TWO C7400A’S ARE NEEDED TO
PROVIDE DIFFERENTIAL ENTHALPY FOR ANALOG ECONOMIZERS AND
TWO C7400S SYLK-BUS SENSORS PROVIDE TEMPERATURE AND HUMIDITY
TO THE JADE FOR DIFFERENTIAL ENTHALPY.
M23906A
28
Section 2 - Enthalpy Theory And Controllers
Two Sensor or Differential Enthalpy
A dual sensor enthalpy control is equipped
with the same outdoor air enthalpy sensor and
an additional second enthalpy sensor in the
return air. This is also referred to as differential
enthalpy. On a call for cooling or when the
mixed air temperature goes above the high
MAT range or setpoint, additional air with the
lower enthalpy, outdoor or return, is selected
to be brought into the conditioning section of
the air handler. For analog economizers the
setpoint on the logic module is turned to D
whenever differential enthalpy is used. This is
a very efficient method of controlling outdoor
air usage since the return and outside air
comparison is continuous and automatic year-
round. It eliminates operator error by
eliminating seasonal changeover which is
frequently overlooked. Though it may appear
wasteful to cool outdoor air at a higher dry
bulb temperature than return air, the savings
are verifiable through psychrometric
calculations. The amount of mechanical
cooling required to dehumidify air often
exceeds the amount required to lower the dry
bulb temperature. In buildings where there is a
substantial amount of cooking, laundry or
other moisture generating activity this type of
control sequence can result in substantial
savings in cooling costs.
DUAL SENSOR OR DIFFERENTIAL ENTHALPY
DAMPER
RETURN AIR
SENSOR
EXHAUST
AIR
RETURN AIR
FROM ROOM
OUTSIDE
AIR SENSOR
SUPPLY
AIR TO
BUILDING
MIXED OR
SUPPLY AIR
SENSOR
COILS
FAN
W7220 ECONOMIZER
CONTROLLER
WITH DEMAND
CONTROL
VENTILATION
TB8220
COMMERCIAL
PRO
M23904A
29
Honeywell Economizers 63-8594-01
Section 2 - Enthalpy Theory And Controllers
Enthalpy Control with Carbon Dioxide Sensor
Most building codes allow for the option of
carbon dioxide sensor-based demand control
ventilation (DCV) to determine the human
occupancy level of the space. Honeywell
supplied controllers that combined this
function with the economizer function. They
were the W7212, W7340, W7460, and the
W7215 economizer logic modules. All of these
logic modules had inputs for a room indoor air
content sensor. Additionally the W7215B was
available with outdoor air content sensor
inputs. The W7215 and W7212 were designed
to be used with series 72 actuators and the
W7460 with the M7415 actuator. The W7340
was designed to be used with an OEM system
because it requires external relays to switch to
compressor and communicates with the OEM
system controller via a modified modbus
protocol. In addition to the indoor sensor
based demand control ventilation option,
these logic modules had additional features
including:
• Maximum damper position adjustment
(DCV max).
• Exhaust fan setpoint.
• Occupied and Unoccupied operation.
• W7213 and W7214 are heat pump models.
The JADETM controller replaced the analog
economizers in new applications. The JADETM
is a digital economizer and incorporates many
features and functions that were not availably
on the analog sensors. See section 11 for the
JADETM controller.
DIFFERENTIAL ENTHALPY WITH DCV
DAMPER
+
EXHAUST
AIR
S
RETURN
AIR SENSOR
RETURN AIR
FROM ROOM
DAMPER
OUTSIDE
AIR SENSOR
SUPPLY
AIR TO
BUILDING
+
S
MIXED OR
SUPPLY AIR
SENSOR
COILS
FAN
W7212 ECONOMIZER
CONTROLLER
WITH DEMAND
CONTROL
VENTILATION
C7632 ROOM
CARBON DIOXIDE
SENSOR
TB8220
COMMERCIAL
PRO
63-8594-01 Honeywell Economizers
M23905A
30
Section 3 - Types of Analog Economizers
Section 3 - Types of Analog Economizers
There were a number of Honeywell analog
enthalpy economizer modules developed
since the early 1960s. Most can be replaced
by the JADETM controller. They varied based
on the actuator control series, mixed air
circuitry and enthalpy sensor configuration.
31
Honeywell Economizers 63-8594-01
Section 3 - Types of Analog Economizers
H705
Commercial
thermostat
Separate
Series
70 or 90
mixed air
controller
Mod IV actuator
The H705 was the base controller since the
mixed air circuitry was not included. Its
function was to provide SPDT high limit
switching in a separate mixed air control
circuit, typically series 90. It replaced the H205
63-8594-01 Honeywell Economizers
32
Optional
second
enthalpy
sensor
H705 on plate,
one enthalpy
sensor on back
without substantial wiring modifications and
could also be used in control circuits with other
company’s devices if a SPDT economizer high
limit was applicable.
Section 3 - Types of Analog Economizers
W7459
Commercial
thermostat
M7405, M7415
or M8405
actuators
only
One enthalpy or dry bulb and
one mixed/supply air sensor
required. Second enthalpy
sensor optional.
The W7459 was similar to the H705 in that
only the enthalpy high limit function is provided
and the mixed air control circuit is in the
M7415 actuator. This restricted the W7459
use to the M7415, M7405 and M8405
actuators and it installed directly onto them.
Unlike the H705 there was not a sensor built
33
W7459 install
on actuator
into the W7459 so wiring connections were
required for one or two enthalpy sensors. It
was also used with direct digital (W7459B),
SPDT mixed air controllers (W7459C) or as a
stand-alone mixed air controller with a mixed
air sensor (W7459A or D).
Honeywell Economizers 63-8594-01
Section 3 - Types of Analog Economizers
W6210 and W7210
Commercial
thermostat
Series 62 or
72 Actuator
One enthalpy or dry bulb and
one mixed/supply air sensor
required. Second enthalpy
sensor optional.
The W6210 and W7210 were used with
Honeywell series 62 or 72 actuators. The
mixed air control circuitry that was either
separate or included in the actuator in the
H705 or W7459 modules was included in
these economizers. The options for enthalpy
and mixed air sensors were the same as the
63-8594-01 Honeywell Economizers
W6210, W7210
install on
flat surface
W7459. The difference between the W7459
and the W7210 was the W7210 has the
addition of the 2-10 Vdc out for controlling a
series 70 DCA or foot-mounted motor, 24 Vac
power and ground for the motor and the mixed
air circuitry in the control. W6210 was used
with floating series 62 motors.
34
Section 3 - Types of Analog Economizers
W6215, W7215 and W7460
Commercial
thermostat
One enthalpy or dry bulb and
one mixed/supply air sensor
required. Second enthalpy
sensor optional.
Optional room CO2
sensor on A models,
additional optional
outdoor CO2 sensors
on B models.
Series 62 or 72 or
M7415 Actuator
The W6215A, W7215A and W7460A
economizer modules were similar to the
W6210 and W7210 with the addition of inputs
from a CO2 sensor for Demand Control
Ventilation and contact inputs and outputs to
monitor and control various devices. The B
models included inputs from an outdoor CO2
35
W6215, W7215,
W7460 install on
flat surface
sensor for the function of limiting outdoor air
usage when the outdoor air was not suitable
for ventilation. The actuators used with these
controllers were:
• W6215 - Series 62
• W7215 - Series 72
• W7460 - M7415
Honeywell Economizers 63-8594-01
Section 3 - Types of Analog Economizers
W7212, W7213 and W7214
Commercial
thermostat
One enthalpy or dry bulb and
one mixed/supply air sensor
required. Second enthalpy
sensor optional.
Optional room CO2
sensor on A models,
additional optional
outdoor CO2 sensors
on B models.
Series 62 or 72 Direct
Coupled Actuators
or M7215 Actuator
The W7212 DCV economizer logic module
was the simplest Demand Control Ventilation
economizer model. It combined all of the
benefits of the W7459 and W7210 with the
added features of the W7215. It did not
include shutdown, air change and purge but
had an “N” terminal for occupancy. On W7213
and W7214 models there was a B or O
terminal for use with heat pumps.
There were three models:
• W7212A- Used with series 70 actuators
including DCA’s, M7215, and Modutrol
Motors
63-8594-01 Honeywell Economizers
36
W7212, W7213
and W7214 install
on flat surface or
mount on M7215
motor.
• W7213A - Used with heat pumps or
conventional rooftop units. B terminal
energized in heating and unenergized in
cooling
• W7214A - Used with heat pumps or
conventional rooftop units. O terminal
unenergized in heating and energized in
cooling.
All models were panel mounted or directly
mounted to M7215 motor.
Section 3 - Types of Analog Economizers
W7340 and W7345
One enthalpy or dry bulb and
one mixed/supply air sensor
required. Second enthalpy
sensor optional.
W7340
Optional room CO2
sensor on W7340
models
The W7340 was a full enthalpy economizer
used in an OEM unit to provide a totally
integrated control system. The W7345
provided temperature (OAT) control only; it did
not have an option for a return air sensor, DCV
sensor or exhaust control.
The W7340A and B modules did not have the
ability to set the outdoor air damper to a
maximum position for DCV, they incorporated
a minimum position setting that defaulted to
20% but could be overridden using the onboard pot or Modbus communication link to a
maximum of 50% open.
37
W7345
W7340 and W7345 mount
on flat surface or on a
M7215 motor
If the CO2 sensor failed, the OA damper
position would go to a position for maximum
occupancy ventilation. If the minimum position
set point was higher than the DCV maximum
position, on sensor failure, the damper would
drive to the higher of the two of DCV maximum
and minimum position settings.
There was no limit on the damper position on
a call from the CO2 sensor (DCV). It could go
100% open.
Honeywell Economizers 63-8594-01
Section 3 - Types of Analog Economizers
Analog Economizer Features
Economizer
DCV
OAQ
Module
Enthalpy Sensor Sensor
Series
High Limit (Indoor) (Outdoor)
H705
W7459
YES
W6210
YES
W7210
YES
W6215
W7215
W7460
W7212
W7340
W7345
63-8594-01 Honeywell Economizers
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
Exhaust Shutdown
Fan
and Air
Motors
Setpoint Change Purge Controlled
Series 90
Series 90
Series 90
M7405
M8405
M7415
M7415
Series 62
Series 62
Series 72
Series 72
Adjustable YES
YES
Series 62
Adjustable YES
YES
Series 72
Fixed
YES
Series 72
Adjustable YES
YES
M7415
Fixed
YES
M7415
Adjustable
Series 72
Modbus
Series 72
Series 72
38
Specific Product
Number
H705A1003
H705A2001
H705D1001
W7459B1009
W7459C1007
M7459A1001
W7459D1005
W6210A1003
W6210D1007
W7210A1001
W7210D1005
W6215A 008
W7215A1006
W7215B1004
W7460A1008
W7460B1006
W7212A1009
W7340C1000
W7345B1001
Section 3 - Types of Analog Economizers
Transformer Wiring Requirements for Analog Economizers
ECONOMIZER LOGIC PANEL
W7459, W6210, W6215,
W7210, W7215, W7460
PRIMARY
VOLTAGE
TR
TR1
CONTACT FOR
COOLING IN
COMMERCIAL
THERMOSTAT
1S SWITCHES
WHEN POWERED
BY 24 VOLTS
1S
2
1
RELAY COIL FOR
FIRST STAGE
OF COOLING
1K
1S1
THIS SWITCH
ENERGIZES THE
MIXED AIR CIRCUIT
M13822A
Economizer Panel Supplied With Same Transformer As Cooling Commercial Thermostat.
One of the most common misapplications of
economizers is related to the field wiring.
When the economizer will not open the
dampers and it is really cool outside, check
the wiring with the transformers. In analog
economizers relay coil 1S is used to open the
outside air dampers as the first stage of free
cooling. To function properly 1S had to be
wired to both sides of the same transformer.
When the same transformer was used for
supplying the commercial thermostat, cooling
relay and the economizer logic module the
switching occured correctly.
PRIMARY
VOLTAGE
ECONOMIZER LOGIC PANEL
W7459, W6210, W6215,
W7210, W7215, W7460
PRIMARY
VOLTAGE
TR
TR1
CONTACT FOR
COOLING IN
COMMERCIAL
THERMOSTAT
1S SWITCHES
WHEN POWERED
BY 24 VOLTS
1S
2
1
1K
THIS SWITCH
ENERGIZES THE
MIXED AIR CIRCUIT
RELAY COIL FOR
FIRST STAGE
OF COOLING
1S1
M13823A
Economizer Panel Supplied With Separate Transformer From Cooling Commercial Thermostat.
24 Vac is supplied to the relay coil 1S in this
application from two separate transformers.
Though the first stage of cooling will switch
correctly through the economizer module
circuit, the relay coil 1S may not. Honeywell
recommends use of a single, larger
transformer for both the economizer logic
module and the cooling commercial
thermostat circuit.
39
Honeywell Economizers 63-8594-01
Section 3 - Types of Analog Economizers
When wiring any economizer it is very
important that you read the notes on the
correct wiring diagram. The wiring diagrams
normally show the internal connections of the
logic module to help guide you if you are
concerned with the common side of the
transformers.
63-8594-01 Honeywell Economizers
40
A rule of thumb to follow any Honeywell
electronic economizer logic module will have
all terminals ending with a 1 as ground.
Section 4 - H705 Economizer Module
Section 4 - H705 Economizer Module
41
Honeywell Economizers 63-8594-01
Section 4 - H705 Economizer Module
H705 Economizer Module
H705 ENTHALPY CONTROL
DAMPER
EXHAUST
AIR
RETURN AIR
FROM ROOM
DAMPER
OUTSIDE
AIR SENSOR
SUPPLY
AIR TO
BUILDING
R
C
D
FAN
COILS
DAMPER
ACTUATOR
SUPPLY OR
MIXED AIR
SENSOR
2
HEAT
1
3 HEAT
10
80
3 COOL
2
HEAT
1
1 0
6
4
F
40
MINIMUM POSITION
CONTROL. PREVENTS
FULL CLOSURE OF
OUTSIDE AIR DAMPERS
MOD-COOL
MOD-HEAT
WH
BH
SENSOR
ROOM SENSOR
T
T1
3
4
RC
RH
STAT
C +20 H
2
5
24 VAC
BC
WC
ECONO
H
1
TR TR
W
B
Y
R
SINGLEZONE CONTROL
COOL SETPOINT 76˚F (24 C)
M23914A
The H705 was the first Honeywell series of
electronic economizer controllers. Prior to the
development of the H705, an
electromechanical device with a nylon
humidity element, the H205, was the state-of-
63-8594-01 Honeywell Economizers
42
the-art controller. The H705 was a direct
replacement for the H205. The output is the
same SPDT switch which is typically wired into
the mixed air circuit.
Section 4 - H705 Economizer Module
H705 Components
WIRES TO C7400
ENTHALPY SENSOR
ON THE BACK OF
PLATE
ENTHALPY
SETPOINT
C7400 ENTHALPY
SENSOR ON
BACK OF PLATE
TR
B
ENTHALPY
CONTROLLER ON
FRONT OF PLATE
C
A
TR1
SO
D
SR
3
2
ENTHALPY
CONTROLLER
1
RESISTOR THAT IS
REMOVED IF SECOND
ENTHALPY SENSOR
IS INSTALLED
M23915A
The H705A Enthalpy Controller base
configuration was single sensor enthalpy
controller but could be used for differential
enthalpy. It was constructed of two devices: a
solid state C7400 enthalpy sensor on one side
of a metal plate and an enthalpy control on the
other side. The device was located in the
outside air stream with a recommended
minimum velocity of 500 feet per minute (152
43
meters per minute). The setpoint scale is A, B,
C and D. Each setting corresponds to an
enthalpy curve with A equalling the highest
enthalpy changeover and D being the lowest
enthalpy changeover. The output of this
control was an SPDT relay output used to
switch the mixed air dampers from return to
outside air and back as required for maximum
efficiency.
Honeywell Economizers 63-8594-01
Section 4 - H705 Economizer Module
H705 Enthalpy Setpoint
50 BTU/LB
116 k-J/kg
90
%
80
AT
25 BTU/LB
RH
58 k-J/kg
%
50
20 BTU/LB
A
B
15
BTU/LB
34.8 kJ/kg
C
50
D
F(
27
60
%
69.7 k-J/kg
46.4 k-J/kg
45
55
F(
10
60
F(
16
C
F(
13
C)
WE
4
)
WE
TB
UL
B
TB
UL
C)
F(
WE
7C
TB
)W
F
UL
35
(4
ET
C)
B
F(
BU
WE
2C
L
) W
B
TB
ET
UL
BU
B
LB
40
)
WE
%
80
RH
30 BTU/LB
F(
29
C
70
SA
T
81.4 k-J/kg
F(
32
C)
WE
TB
UL
B
RH
UR
35 BTU/LB
85
%
IO
92.8 k-J/kg
RH
N-
40 BTU/LB
90
10
0%
104.5 k-J/kg
RH
RH
45 BTU/LB
0%
30
F(
24
RH
70
RH
%
65
RH
20%
B
75
C)
WE
C)
F(
18
TB
UL
WE
F(
21
C)
WE
C)
TB
UL
B
B
TB
UL
B
WE
H
10% R
TB
UL
B
TB
UL
B
40 F
50 F
60 F
70 F
80 F
90 F
100 F
110 F
120 F
4 C
10 C
16 C
21 C
27 C
32 C
38 C
43 C
49 C
35 F
45 F
55 F
65 F
75 F
85 F
95 F
105 F
115 F
2 C
7 C
13 C
18 C
24 C
29 C
35 C
41 C
46 C
DRY BULB TEMPERATURES
M25282
This psychrometric chart shows effects of the
various analog economizer logic setpoints
listed. This only applied to single enthalpy
controllers not differential enthalpy. Air with
conditions to the left of the curve is brought in
from outdoors to be used for cooling. When
the outdoor air conditions are to the right of the
curve, the dampers will be set at minimum
position for ventilation and the mechanical
cooling energized. For differential enthalpy the
setpoint knob or potentiometer was turned to
the D setting and the lower of return or outside
air brought into the building.
63-8594-01 Honeywell Economizers
44
Control
Curve
A
B
C
D
Knob turned
to D
Control Point
(Approximate Temperature
at 50% Humidity)
73°F (23°C)
70°F (21°C)
67°F (19°C)
63°F (17°C)
For Differential Enthalpy (2 Sensor)
Example: With A, B, C, D potentiometer logic
module set at “C”. Dry bulb temperature at
65°F (18.3°C) and Relative Humidity (RH) at
50% RH the logic module would free cool on
first call for cooling for commercial thermostat.
Section 4 - H705 Economizer Module
H705 Wiring Diagram
TRANSFORMER
L1
(HOT)
MIXED AIR
DAMPER MOTOR
T1
L2
T2
W
R
B
H705 ENTHALPY CONTROL
TR
B
A
C
W
TR1
TR
SO
D
100
80
SR
120
TR1
W
40
°F
3
2
R
60
140
F
SR
620 OHM
RESISTOR
1
R
1
30
140
5
80
6
70
1 0
60
MINIMUM
POSITION
CONTROL
180
B
T991 MIXED
AIR CONTROL
2
ENTHALPY
DECREASE
110
100
90
+
1
3
NC
C
NO
RELAY
RC
NC
Y1
C
NO
Y2
COOLING
COMMERCIAL THERMOSTAT
T1
L1
COOLING
CONTACTOR
T2
L2
M13818A
The H705 enthalpy control is being used in
this application in place of a dry bulb
temperature economizer high limit. The H705
included a single enthalpy sensor for the
outside air. An optional second C7400
installed in the return air was used for
differential enthalpy. If the second C7400
sensor is not used a 620 ohm resistor was
installed across the SR and + terminals. The
45
economizer modulated the outdoor dampers
for free cooling provided the outside air
enthalpy was below the setpoint on the H705.
If the outdoor enthalpy is above the setpoint
the outside air dampers are closed to a
minimum position for ventilation and the
mechanical cooling is energized. As shown in
the diagram above, relay makes 2-1 on rising
enthalpy and 2-3 on enthalpy decrease.
Honeywell Economizers 63-8594-01
Section 4 - H705 Economizer Module
TR
L1
(HOT)
L2
1
W936 OR W945
ELECTRONIC PANEL
TR
E1
T1
M745
ECONOMIZER
MOTOR
1
3
L1
(HOT)
L2
1
TR
2
TR
3
R
E3
E2
OPTIONAL
MORNING
WARMUP
COMMERCIAL
THERMOSTAT
W
H705A
OPTIONAL
C7400A
TR
2
620 TR1
OHMS
SR
S
3
W
4
R
B
2
1
S963A OR Q209
MINIMUM POSITION
POTENTIOMETER
1
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS
REQUIRED.
2
FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD BE
REMOVED ONLY IF A C7400A SENSOR IS ADDED TO SR AND + FOR
DIFFERENTIAL ENTHALPY.
3
ENSURE THAT EQUIPMENT TRANSFORMER IS SIZED TO HANDLE
THE EXTRA LOAD OF THE ECONOMIZER AND ACTUATOR.
M15037C
H705A used in electronic system
W1
2
R1
H705A
TR
BLACK/YELLOW
BLACK/RED
3
3
T872 SPACE
THERMOSTAT
(COOLING
CIRCUIT)
MODUTROL®
MOTOR
OPTIONAL
C7400A
BLACK/BLUE
V OLET
BROWN
YELLOW
V OLET
WH TE/RED
B1
RED
YELLOW
BLUE
W859D ECONOMIZER
CONTROL PACKAGE
Y1
TR1
3
2ND STAGE
COOLING
CONTACTOR
Y2
RC
5
SR
S
620
OHMS
2
3
1
3
2
Y
1
G
C
2
R
4
6
L1
(HOT)
L2
COOLING
TRANSFORMER
1ST STAGE
COOLING
CONTACTOR
1 PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
4
ROOFTOP TERMINAL STRIP IS PART OF AIR CONDITIONING UNIT.
5
FACTORY-INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD BE
REMOVED ONLY IF A C7400A SENSOR IS ADDED TO SR AND + FOR
DIFFERENTIAL ENTHALPY.
6
ENSURE THAT EQUIPMENT TRANSFORMER IS SIZED TO HANDLE
THE EXTRA LOAD OF THE ECONOMIZER AND ACTUATOR.
2 FIELD CONTROL WIRING REQUIRED TO INTEGRATE
ECONOMIZER INTO UNIT.
3 FIELD WIRING REQUIRED TO PROVIDE ECONOMIZER AND
MECHANICAL COOLING OPERATION IN EXISTING INSTALLATION.
H705A used in electromechanical system
63-8594-01 Honeywell Economizers
46
M12162A
Section 4 - H705 Economizer Module
T7300
THERMOSTAT
T7300
SUBBASE
EXISTING HVAC EQUIPMENT
OPTIONAL
C7400A
RH
H705A
TR1
TR
6
2
SR
620
OHMS
S
RC
HVAC
EQUIPMENT
TERMINAL
STRIP
L1
L2
(HOT)
9
SYSTEM
TRANSFORMER
R
3
1
2
3
3K
4
X
Y1
C2
Y2
Y2
C1
W1
HEAT 1
W2
HEAT 2
Y1
H2
W2
H1
FAN
G
W1
4
5
FAN
COOL1
COM
8
LED 1
BLACK/
YELLOW
BLACK/RED
G
COOL 2
W
LED 2
TYPICAL W859D ECONOMIZER CONTROL PACKAGE
MIXED AIR
TEMPERATURE
CONTROLLER
B1
A1
BLUE
W
R
OUTDOOR AIR
CHANGEOVER
SWITCH
B
RISE
W1
AUX
BLACK
7
BROWN
MODUTROL®
MOTOR
1K1
1K2
R1
T1
A2
W
T675 LOW
AMBIENT
COMPRESSOR
LOCKOUT
2K
MINIMUM POSITION
POTENTIOMETER
YELLOW
B
2K2
YELLOW
R
B
OPEN
1K
RED
T2
R
2K1
VIOLET
VIOLET
4K1
1
L2
4
4K1
L1
(HOT)
5
ECONIMIZER MOTOR SPRING RETURNS CLOSED ANY TIME
FAN IS NOT RUNNING.
6
FIELD INSTALLED JUMPER.
7
IMPORTANT: MIXED AIR SENSOR MUST BE LOCATED
DOWNSTREAM OF THE EVAPORATOR COIL IN THE DISCHARGE
AIR DUCT TO PROVIDE ECONOMIZER LOW LIMIT FUNCTION.
3 ENTHALPY CONTROL MAKES TERMINALS 2-1 ON
ENTHALPY RISE, AND 2-3 ON ENTHALPY FALL.
8
24 VAC ONLY.
4 RELAY REQUIRED (R8222 OR SIMILAR).
9
MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF
COMMERCIAL THERMOSTAT AND SUBBASE.
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
2
FACTORY-INSTALLED 620 OHM, 1 WATT, 5% RESISTOR
SHOULD BE REMOVED ONLY IF A C7400A SENSOR IS
ADDED TO SR AND + FOR DIFFERENTIAL ENTHALPY.
M12167B
T7300/Q7300 using W859D Economizer Package with H705A in two-stage
heating/two-stage cooling system, defeating economizer minimum position
during unoccupied periods
47
Honeywell Economizers 63-8594-01
Section 4 - H705 Economizer Module
63-8594-01 Honeywell Economizers
48
Section 5 - M74XX Black Motor
Section 5 - M7XXX Black Motor
49
Honeywell Economizers 63-8594-01
Section 5 - M74XX Black Motor
M7215, M7415, M7405 and M8405 Actuators
rooftop air handlers since the operating
temperature rating is -25 to 125°F
(-32 to 52°C).
TR
24 VAC
SENSOR
TR1
T
T1
MIN
POS
M7215 modulating motor,
with 2-10 Vdc input required.
P1
P
M13856A
M7215 modulating motor. Used with
W7212, W7213, W7214 or W7220 only
M7415
W7459A
TR
TR1
TR
24 VAC
T
T1
P1
P
TR1
SENSOR T
T1
P1
MIN
POSN P
M23890
The M7XXX line of spring return actuators are:
• Low torque 25 lb-in. (2.8 N-m)
• 90 second timing in 90 degrees travel
• Rotation of 90 degrees
• Quick connect terminals for wiring
connections
M7415 modulating motor, sensor
input or controller required.
Used with W7459A or D only.
There are more actuators available in this
series than listed on this page. Only actuators
shown on this page are used with the W7459,
W7210, W7212, W7215, W7220 and W7340
economizer modules. They are widely used to
modulate the mixed air dampers on smaller
NOTE: Using a black motor with a sensor for
economizer changeover is no longer
an acceptable method of economizer
control in ASHRAE 90.1, IECC, ICC
and CA Title 24. Systems with this
type of changeover should be updated
63-8594-01 Honeywell Economizers
50
M23891
Section 5 - M74XX Black Motor
to an economizer control strategy
approved by the local or state
authority having jurisdition.
T
MAX
SW
SET
MIN
TR
24 VAC
TR1
X
D
M3
W7401
M2
M1
M23893
MIN
POS
P1
M8405 3-position actuator.
Used with W7459C only.
P
M23892
M7405 modulating motor. Used with
W7459B and W7400/T7400 only.
51
Honeywell Economizers 63-8594-01
Section 5 - M74XX Black Motor
63-8594-01 Honeywell Economizers
52
Section 6 - W7459 Economizer Module
Section 6 - W7459 Economizer Module
FOR USE WITH M7415 SERIES ACTUATORS
53
Honeywell Economizers 63-8594-01
Section 6 - W7459 Economizer Module
W7459 Enthalpy Module Components
W7459 ENTHALPY CONTROL
DAMPER
EXHAUST
AR
+
S
RETURN AIR
SENSOR
RETURN AIR
FROM ROOM
DAMPER
OUTSIDE
AIR SENSOR
SUPPLY
AIR TO
BU LDING
+
S
COILS
DAMPER
LINKAGE
TR
B
FAN
MIXED AIR
SENSOR
TR1
C
SO
A
D
SR
5
1
2
TB8220
COMMERCIAL
PRO
3
M NIMUM
OSI ON
O EN
T
T1
P
P1
M7415 DAMPER ACTUATOR
WITH W7459 ENTHALPY
CONTROLLER
M23907
The W7459 is used in conjunction with a
Honeywell actuator (M7415) and sensors to
control outdoor and return air dampers free
cooling using outside air. It is designed to be
installed directly on the actuator.
The W7459 was used with Honeywell C7400A
enthalpy, C7650 or C7660 dry bulb
temperature sensors and the M7415, M7405,
and M8405 actuators. It had to be installed in
free flowing air yet out of direct rain or sunlight.
It can be used as a single or differential
enthalpy control. A minimum position
potentiometer is built into all W7459 modules
except for the W7459C since the M8405
actuator, that it is used with, has the setting
built-in. All W7459 modules can be used with
remote minimum position potentiometers. See
Table 1 for model capability with motors.
M7415, M7405
OR M8405
ACTUATOR
W7459
ENTHALPY
CONTROL
MODULE
TR
TR1
T
T1
P1
P
MOTOR
TERMINALS
M13837A
63-8594-01 Honeywell Economizers
54
Section 6 - W7459 Economizer Module
Table 1. Economizer Usage
Model
W7459A
W7459B
W7459C
For use
with
Discharge Air
Actuator
Temperature Input
M7415
C7510B or C7046A
Sensor
M7405A
Direct digital control
W7401/W7411 Logic
Panel
M8405
SPST control
W7459Da M7415
a
C7150B or C7046A
Sensor
Minimum Position
Potentiometer
Yes
Terminals for
Remote Minimum Output
Damper Position Relays
Yes
2 SPDT
Yes
Yes
1 SPDT
No. Minimum position No
adjustment is built into
M8405 Actuator.
Yes
Yes
2 SPDT
2 SPDT
W7459D has a high enthalpy limit and defaults to mechanical cooling when the outdoor enthalpy reaches the preset limit.
Do not use a dry bulb sensor for a high temperature limit.
55
Honeywell Economizers 63-8594-01
Section 6 - W7459 Economizer Module
W7459A, B, C and D
ENTHALPY
CHANGEOVER
SETPOINT DIAL
B
A
TR
TR1
TRANSFORMER
(POWER) TERMINALS
SO
+
OUTSIDE AIR
SENSOR TERMINALS
SR
+
RETURN AIR
SENSOR TERMINALS
C
B
D
A
TR
TR1
SO
+
SR
+
M3
3
2
1
M2
M1
P
P1
C
D
5
MININUM
POSITION DIAL
(W7459A AND D
ONLY)
LIGHT IS
ILLUMINATED IF
OUTDOOR AIR
IS USEABLE FOR
FREE COOLING
2
3
4
T
T1
MIXED OR SUPPLY
AIR SENSOR
P
P1
REMOTE MINIMUM
POSITION POTENTIOMETER
MINIMUM
POSITION
OPEN
COOLING SWITCHING
CONTROLLED FROM
COOLING STAT
1
MINIMUM
POSITION
OPEN
NOTE: USE SMALL SCREWDRIVERS ON THE POTENTIOMETERS.
DO NOT USE EXCESSIVE FORCE!
M23894A
NOTE: USE SMALL SCREWDRIVERS ON THE POTENTIOMETERS.
DO NOT USE EXCESSIVE FORCE!
W7459A
M23895A
W7459A or D - Uses inputs from mixed or
discharge air temperature sensors, C7150 or
C7046; enthalpy sensor C7400; and optional
remote minimum position potentiometer
Q709A or S963B. The W7459D is identical to
the W7459A except for the addition of a builtin enthalpy high limit. Refer to high limit
function in Table 2 and at the end of this
section. Use both modules with M7415
motors.
There are four separate W7459 enthalpy logic
modules for use with various M74XX series
actuators. All provide enthalpy control of
mixed air. The W7459B is designed for use
with a legacy Honeywell direct digital
controller. The W7459C uses a SPST input for
the mixed air sensor.
W7459B
W7459B - Used with Honeywell W7401 Logic
Panel, enthalpy sensor C7400 or minimum
position potentiometer Q709A or S963B. Use
with M7405.
B
A
TR
TR1
SO
+
SR
+
C
D
5
1
2
3
4
X
6
D
X TERMINAL IS USED
WITH A ST6008 TIMER
FOR OCCUPIED/
UNOCCUPIED
MIXED AIR CONTROL
(T675/T6031)
CONNECTED TO
TERMINALS 6 AND D
NOTE: USE SMALL SCREWDRIVERS ON THE POTENTIOMETERS.
DO NOT USE EXCESSIVE FORCE!
M23896A
W7459C
W7459C - Uses input from SPST mixed or
discharge air control and enthalpy sensor
C7400. Used with M8405.
63-8594-01 Honeywell Economizers
56
Section 6 - W7459 Economizer Module
W7459 Enthalpy Setpoint Chart
50 BTU/LB
116 k-J/kg
RH
RH
IO
92.8 k-J/kg
58 k-J/kg
50
A
46.4 k-J/kg
15
D
35
40
°F (
2 °C
B
C
45
°F (
)W
29
RH
25 BTU/LB
BTU/LB
34.8 kJ/kg
°F (
°F (
27
60
%
69.7 k-J/kg
20 BTU/LB
50
°F (
4 °C
ET
7 °C
)W
ET
BU
55
°F
°F (
)W
60
10
°C )
ET
BU
LB
( 13
°F (
°C )
16
°C )
WE
WE
BU
WE
WE
°C )
TB
UL
WE
%
80
RH
30 BTU/LB
°C )
TB
U
70
SA
T
81.4 k-J/kg
85
80
AT
UR
35 BTU/LB
32
90
10
N-
40 BTU/LB
°F (
%
0%
104.5 k-J/kg
%
HIGH LIMIT
CURVE FOR
W7459 D,
W6210D AND
W7210D
90
RH
45 BTU/LB
%
%
40
TB
UL
B
%
30
TB
UL
B
20%
TB
UL
B
LB
RH
75
°F (
RH
70
RH
65
RH
°F (
°F (
24
21
18
H
10% R
°C )
°C )
°C )
°C )
WE
TB
UL
B
TB
UL
WE
LB
50 °F
60 °F
70 °F
80 °F
90 °F
100 °F
110 F
4 °C
10 °C
16 °C
21 °C
27 °C
32 °C
38 °C
43 °C
45 °F
55 °F
2 °C
7 °C
13 °C
B
TB
UL
B
40 °F
35 °F
LB
TB
UL
B
WE
WE
B
120 °F
49 °C
65 °F
75 °F
85 °F
95 °F
105 °F
115 °F
18 °C
24 °C
29 °C
35 °C
41 °C
46 °C
DRY BULB TEMPERATURES
M25283A
This is the psychrometric chart for the setpoint
on the W7459 enthalpy modules. It is similar
to the charts for the H705 except for the
enthalpy high limit line to the right of the A
curve. This is a specialized limit used only in
the W7459D, W6210D, W7210D and W7212
controllers. When the enthalpy of both the
return and outside air is to the right of the limit
line the outside air dampers are closed to the
minimum position and the mechanical cooling
is energized.
57
Control Point
(Approximate Temperature
Control Curve
at 50% Humidity)
A
73°F (23°C)
B
70°F (21°C)
C
67°F (19°C)
D
63°F (17°C)
Knob turned For Differential Enthalpy
to D
(2 Sensor)
When using differential enthalpy the outdoor
air is compared to the return air and you set
the potentiometer to "D" to prevent the return
air from being to the left of the enthalpy curve.
Honeywell Economizers 63-8594-01
Section 6 - W7459 Economizer Module
If the return air were to the left of the enthalpy
curve, you would use the enthalpy curve
instead of the return air conditions. For
example, if the return air conditions were
between D and C and the outdoor was to the
right of the A AND the potentiometer was set
to B, you would use the B curve instead of the
return air. If the outdoor air conditions were to
the left of the return air you would use the
outdoor air. If the outdoor conditions are to the
right of the return air conditions you use the
return air.
High Limit Switching
Table 2. W7459D, W7210D and W7212 High Limit Switching.
Percent RH
25
50
60
75
Switch Over Point on Enthalpy
Decreasing
83°F ±0.5°F (28°C ±0.3°C)
78°F ±0.5°F (26°C ±0.3°C)
76°F ±0.5°F (24°C ±0.3°C)
73°F ±0.5°F (23°C ±0.3°C)
The W7459D, W6210D, W7210D, and W7212
include the high limit function that is not used
on any other economizer modules. It is a high
enthalpy limit that applies to both return and
outside air. It only applies when using
differential changeover, not single enthalpy.
When the return and outside enthalpy both
exceed the high limit curve, (refer to the
psychrometric chart on the previous page) the
outside air dampers are closed to the
minimum position and the mechanical cooling
is energized. In a standard differential
enthalpy control sequence the lower of the
outside and return is selected regardless of
the amount of enthalpy in either.
63-8594-01 Honeywell Economizers
58
Switch Over Point on Enthalpy
Increasing
85°F ±0.5°F (29°C ±0.3°C)
80°F ±0.5°F (27°C ±0.3°C)
78°F ±0.5°F (26°C ±0.3°C)
75°F ±0.5°F (24°C ±0.3°C)
A typical application of this limit function is a
building located in a warm, humid climate with
a high internal heat gain such as a laundry or
kitchen. A standard differential enthalpy
control circuit may have extremely warm,
humid outside air being cooled just because
the indoor air is temporarily higher in enthalpy.
The mechanical cooling equipment might be
undersized and the indoor enthalpy then
remains higher than outside longer than the
desired period of time. The high limit function
(only available on some economizer modules)
prevents this from occurring by automatically
switching to return air and turning on the
mechanical cooling during very high outdoor
air enthalpy conditions.
Section 6 - W7459 Economizer Module
W7459A Wiring Diagram
W7459A ECONOMIZER MODULE
C7400 OURDOOR AIR
ENTHALPY SENSOR
M7415 ACTUATOR
TR
TR
TR1
24 VAC 1
+
S
SO
+
TR1
SR
+
S
RELAYS 1K AND 2K ENERGIZE
IF OUTDOOR ENTHALPY
EXCEEDS RETURN AIR ENTHALPY
C7400 RETURN AIR
ENTHALPY SENSOR
1S
+
5
1
2
3
4
T
T1
T
MIXED AIR
SENSOR
1K
1S SWITCHES
WHEN
POWERED BY
24 VOLTS
2K
1S1
T1
P1
MINIMUM
POSITION
P
P
P1
MINIMUM POSITION
ADJUSTMENT
C7150 OR C7046
MIXED OR SUPPLY
AIR SENSOR
LOW O.A. AMBIENT
COMPRESSOR
LOCKOUT STAT
(OPTIONAL)
HVAC EQUIPMENT TERMINAL STRIP
TRANSFORMER
1
R
F
110
100
Y1
120
W
130
140
0
5
80
6
70
C
170
60
Y2
W2
Y1
COOL1
Y2
COOL2
W2
HEAT 2
W1
HEAT 1
W1
G
FAN DELAY
G
RH
FAN
FDR
R
RC
COMMERCIAL
THERMOSTAT
1
HONEYWELL RECOMMENDS USE OF A SINGLE LARGE TRANSFORMER FOR BOTH THE ECONOMIZER LOGIC MODULE
AND THE COOLING COMMERCIAL THERMOSTAT CIRCUIT.
2
WHEN THE SUPPLY FAN IS POWERED, THE ECONOMIZER IS POWERED AND THE DAMPER IS POSITIONED TO
MINIMUM POSITION. TAKE CAUTION WHEN USING THIS CONTROL SEQUENCE ON NEWER ECONOMIZERS WITH
MICROPROCESSOR CONTROL. DO NOT POWER THE MICROPROCESSOR ECONOMIZERS FROM THE SUPPLY FAN,
THEY NEED CONSTANT POWER.
59
M13819A
Honeywell Economizers 63-8594-01
Section 6 - W7459 Economizer Module
W7459A ECONOMIZER PACKAGE
M7415 ACTUATOR
TR
C7400
OUTDOOR +
AIR
ENTHALPY S
SENSOR
620 OHM
RESISTOR
TR
TR1
SO
+
SR
+
TR1 24 VAC
6
5
1K
1
2
3
4
5
1S
2K
4
T
UNOCCUPIED
C7150B MIXED
AIR OR
C7046A
DISCHARGE
AIR SENSOR
8
ST6008
TIMER
T
T1
P
P1
T1
1S1
P1
MINIMUM POSITION
ADJUSTMENT
OCCUPIED
MIXED
AIR
SENSOR
P
MINIMUM
POSITION
M7415
C
Y1
W
Y2
R
W2
T6031 AMBIENT
LOCKOUT
CONTROL
50 F SETPOINT
Y1
COOL 1
Y2
COOL 2
TR
24 VAC
SENSOR
TR1
T
T1
W1
W2
HEAT 2
W1
HEAT 1
P1
MIN
POS
P
FAN
DELAY
RELAY
G
7
X
FDR
FAN
G
1
RH
FDR
2
R
RC
T7300 OR T874
THERMOSTAT
3
L2
L1
(HOT)
HVAC EQUIPMENT
TERMINAL STRIP
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2
MOTOR SPRING-RETURNS CLOSED WHEN FAN IS NOT RUNNING.
3
ENSURE THAT EQUIPMENT TRANSFORMER IS SIZED TO HANDLE THE EXTRA LOAD OF THE ECONOMIZER AND ACTUATOR.
4
1S IS AN ELECTRONIC SWITCH THAT CLOSES WHEN POWERED BY A 24 VAC INPUT.
5
RELAYS 1K AND 2K ACTUATE WHEN THE ENTHALPY SENSED BY THE C7400 IS HIGHER THAN THE ENTHALPY SETPOINT A-D.
6
FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD BE REMOVED ONLY IF A C7400 ENTHALPY SENSOR
IS ADDED TO SR AND + FOR DIFFERENTIAL ENTHALPY.
7
FOR T7300 ONLY.
8
WITH T7300, USE CONTACTS A1 AND A2 INSTEAD OF S7005 TIMER.
W7459A/C7400 used in two-stage cooling system with
single enthalpy changeover and with M7415 Actuator
63-8594-01 Honeywell Economizers
60
M10115C
Section 6 - W7459 Economizer Module
W7459A ECONOMIZER PACKAGE
M7415 ACTUATOR
TR
C7400
OUTDOOR
AIR
ENTHALPY
SENSOR
TR
TR1
SO
+
SR
+
TR1 24 VAC
+
S
620 OHM
RESISTOR
6
5
1K
1
2
3
4
5
1S
2K
4
T
C7150B MIXED
AIR OR
C7046A
DISCHARGE
AIR SENSOR
8
UNOCCUPIED
ST6008
TIMER
T
T1
P
P1
T1
1S1
P1
MINIMUM POSITION
ADJUSTMENT
OCCUPIED
W
R
T6031 AMBIENT
LOCKOUT
CONTROL
50 F SETPOINT
M7415
Y1
COOL 1
Y2
COOL 2
TR
24 VAC
SENSOR
T
P1
MIN
POS
+
P
2
NC
C
NO
NC
C
NO
TR1
T1
7
C
MINIMUM
POSITION
P
C
T775 CONTROLLER
MIXED
AIR
SENSOR
G
FAN
3
L2
NO
C
NC
NO
C
NC
1
L1
(HOT)
R
HVAC EQUIPMENT
TERMINAL STRIP
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2
MOTOR SPRING-RETURNS CLOSED WHEN FAN IS NOT RUNNING.
3
ENSURE THAT EQUIPMENT TRANSFORMER IS SIZED TO HANDLE THE EXTRA LOAD OF THE ECONOMIZER AND ACTUATOR.
4
1S IS AN ELECTRONIC SWITCH, WHICH CLOSES WHEN POWERED BY A 24 VAC INPUT.
5
RELAYS 1K AND 2K ACTUATE WHEN THE ENTHALPY SENSED BY THE C7400 IS HIGHER THAN THE ENTHALPY SETPOINT A-D.
6
FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD BE REMOVED ONLY IF A C7400 ENTHALPY SENSOR
IS ADDED TO SR AND + FOR DIFFERENTIAL ENTHALPY.
7
T775 REQUIRES A MINIMUM OF THREE RELAY OUTPUTS: TWO FOR COOLING AND ONE FOR FAN CONTROL.
8
T775 SERIES 2000 CAN BE PROGRAMMED TO PROVIDE TIME OF DAY CLOCK AND THE ST6008 TIMER CAN BE ELIMINATED.
M13843B
W7459A/C7400 or W7459D/C7400 used in two-stage cooling system with
single enthalpy changeover, M7415 Actuator, and T775 Series 2000 Controller
61
Honeywell Economizers 63-8594-01
Section 6 - W7459 Economizer Module
63-8594-01 Honeywell Economizers
62
Section 7 - W6210 And W7210 Economizer Modules
Section 7 - W6210 And W7210
Economizer Modules
63
Honeywell Economizers 63-8594-01
Section 7 - W6210 And W7210 Economizer Modules
W7210 Economizer System Components
DAMPER
EXHAUST
AIR
+
S
RETURN
AIR SENSOR
RETURN AIR
FROM ROOM
OUTSIDE
AIR SENSOR
SUPPLY
AIR TO
BUILDING
+
S
FAN
DISHCHARGE
AIR SENSOR
COILS
24 VAC
HOT
W7210 A 1001
24 VAC
COM
W7210 SOLID
STATE
ECONOMIZER
LOGIC MODULE
+
2 10V
OUT
T7350
PROGRAMMABLE
THERMOSTAT
M23902A
63-8594-01 Honeywell Economizers
64
Section 7 - W6210 And W7210 Economizer Modules
W6210 and W7210 Components
SINGLE ENTHALPY
SETPOINT
24 VAC
HOT
24 VAC TR
HOT
B
C
24 VAC
COM
W7210 A 1001
ACTUATOR
POWER SUPPLY
TERMINALS
A
24 VAC POWER TERMINALS
SO
+
OUTSIDE AIR ENTALPY SENSOR
D
SR
+
RETURN AIR ENTHALPY SENSOR
5
COOLING SWITCHING
CONTROLLED FROM
COOLING STAT
1
+
ACTUATOR
TERMINALS
TR
COM1
MINIMUM
POSIT ON
2-10V
OUT
2
3
4
T
T1
P
P1
OPEN
MINIMUM DAMPER POSITION
SETPOINT
MIXED AIR SENSOR
REMOTE MINIMUM
POSITION POTENTIOMETER
FREE
COOLING
FREE COOLING MODE LIGHT
M23897A
The W7210 logic modules had the identical
functions as the W7459 modules with the
addition of a 2-10 Vdc output for use with
M7215 foot-mounted actuators or DCA’s and
Modutrol Motors with 2-10 Vdc control. The
mixed air control circuit was in the logic
module and no longer in the actuator. The
actuator could also be powered with the same
24 Vac power as the logic modules provided
the internal grounding of the actuator was
compatible. Note some of the non-Honeywell
actuators were not compatible with the
M7210.
High Limit Function
There were high limit versions of these
economizer logic modules, W7210D. When in
the differential enthalpy mode and both the
return and outside air enthalpy were above a
preset level, the outside air dampers were
returned to minimum position and the
65
mechanical cooling was energized. The curve
for this limit function is illustrated on the
psychrometric chart as the line to the right of
the A curve. Refer to high limit section of this
guide for more information.
Wiring Connections
There are many possible wiring diagrams and
combinations of controllers and actuators that
can be used with the logic modules. Once you
understand the input and output of the
modules, you can usually determine how a
system should be wired.
NOTE: Many user systems are wired to
bypass operations and to “trick” the
module into operating in a mode that it
was not designed to do, these are the
applications which may confuse you.
When is doubt, call the unit supplier or
refer to the product instructions for
wiring diagrams.
Honeywell Economizers 63-8594-01
Section 7 - W6210 And W7210 Economizer Modules
W7210 Actuator Connections
60
30
90
60
PARALLEL MS7503 or MS7505 ACTUATORS
W7210 OR W7215
ECONOMIZER
MODULE
60
30
0
24 VAC
HOT
90
60
W7210 OR W7215
ECONOMIZER
MODULE
30
500
500
0
60
60
30
500
30
500
90
30
0
24 VAC
HOT
500
SINGLE MS7503 or MS7505
ACTUATOR
24 VAC
COM
500
24 VAC
COM
RED
BLACK
WHITE
+
+
2-10V
OUT
RED
2-10V
OUT
RED
BLACK
WHITE
_
BLACK
_
WHITE
M13824A
63-8594-01 Honeywell Economizers
66
Section 7 - W6210 And W7210 Economizer Modules
W7210 Wiring Diagrams
W7210A,D
24 VAC HOT
C7400
OUTDOOR
AIR
ENTHALPY
SENSOR
TR
TR1
SO
+
SR
+
HONEYWELL
SERIES 72
ACTUATOR
24 VAC COM
+
(ML7275,
ML7285,
ML7295A,C
M7275,
M7285)
S
620 OHM
RESISTOR
9
6
5
1K
C7150B MIXED
AIR OR
C7046A
DISCHARGE
AIR SENSOR
UNOCCUPIED 8
ST6008
TIMER
1
2
3
4
T
T1
P
P1
5
1S
2K
+
+
4
2-10V
OUT
1S1
–
MINIMUM POSITION
ADJUSTMENT
OCCUPIED
C
Y1
COOL 1
Y2
COOL 2
W2
W2
HEAT 2
W1
W1
HEAT 1
Y1
W
Y2
R
T6031 AMBIENT
LOCKOUT
CONTROL
50 F SETPOINT
FAN
DELAY
RELAY
G
7
X
FDR
FAN
G
1
RH
FDR
2
R
RC
T7300 OR T874
THERMOSTAT
3
L2
L1
(HOT)
HVAC EQUIPMENT
TERMINAL STRIP
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2
ACTUATOR SPRING-RETURNS CLOSED WHEN FAN IS NOT RUNNING.
3
ENSURE THAT EQUIPMENT TRANSFORMER IS SIZED TO HANDLE THE EXTRA LOAD OF THE ECONOMIZER AND ACTUATOR.
4
1S IS AN ELECTRONIC SWITCH THAT CLOSES WHEN POWERED BY A 24 VAC INPUT.
5
RELAYS 1K AND 2K ACTUATE WHEN THE ENTHALPY SENSED BY THE C7400 IS HIGHER THAN THE ENTHALPY SETPOINT A-D.
6
FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD BE REMOVED ONLY WHEN A C7400 ENTHALPY SENSOR
IS ADDED TO SR AND + FOR DIFFERENTIAL ENTHALPY.
7
FOR T7300 ONLY.
8
FOR T7300, USE CONTACTS A1 AND A2 NSTEAD OF THE TIMER.
9
FOR THE ML7295A,C USE THE 4-20 MA MODEL ACTUATOR. THESE MODELS HAVE 500 OHM INPUT IMPEDENCE,
WHICH ALLOWS THE ACTUATOR TO ACCEPT A 2-10 VDC SIGNAL.
M11154B
W7210A,D used in two-stage cooling system with single
enthalpy changeover and Honeywell Series 72 Actuator
67
Honeywell Economizers 63-8594-01
Section 7 - W6210 And W7210 Economizer Modules
63-8594-01 Honeywell Economizers
68
Section 8 - W6215, W7215 And W7460 Economizer Modules
Section 8- W6215, W7215 And W7460
Economizer Modules
69
Honeywell Economizers 63-8594-01
Section 8- W6215, W7215 And W7460 Economizer Modules
W7215 System Components
DAMPER
EXHAUST
AIR
+
S
RETURN
AIR SENSOR
RETURN AIR
FROM ROOM
OUTSIDE
AIR SENSOR
SUPPLY
AIR TO
BUILDING
+
S
FAN
MIXED AIR COILS
SENSOR
W7215 ECONOMIZER
LOGIC MODULE
W7215B
+
T7350
PROGRAMMABLE
THERMOSTAT
C7232 ROOM
CARBON DIOXIDE
SENSOR
M23903A
63-8594-01 Honeywell Economizers
70
Section 8 - W6215, W7215 And W7460 Economizer Modules
W6215, W7215 and W7460 Components
FREE COOLING MODE LIGHT
MINIMUM DAMPER POSITION SETPOINT
SINGLE ENTHALPY SETPOINT
24VAC
TR Hot
B
C
24VAC
Hot
ACTUATOR POWER
SUPPLY TERMINALS
24VAC
Com
A
TR1
Com
D
So
Sr
+
OUTSIDE AIR ENTHALPY SENSOR
+
RETURN AIR ENTHALPY SENSOR
5
1
+
CONTACT
OUTPUTS
2
Min num
Pos ion 3
4
T
T1
P
P1
Open
W7215A
ACTUATOR
CONTROL
TERMINALS
2 10V
OUT
Free Cool
Maximum
Position
Free
Cool
Q
Closed
6V AQ
+
Exhaust
Fan
Q1
AQ1
–
10V
ISI
Set Pt SD
SD1
AC
AC1
50% PG
PG1
2V
Unit
Control
TRANSFORMER TERMINALS
COOLING SWITCHING
CONTROLLED FROM
COOLING STAT TO COMPRESSOR
(TERMINALS 1-5)
MIXED AIR SENSOR
REMOTE MINIMUM POSITION
POTENTIOMETER
MAXIMUM DAMPER POSITION
SETPOINT FOR DCV
REMOTE MAXIMUM DAMPER POSITION
POTENTIOMETER
CO2 SENSOR INPUT
DCV SENSOR SETPOINT
CONTACT INPUTS TO INITIATE
CONTROL SEQUENCES
ISI
Indoor
Fan
0%
1
Exhaust
Set Pt
Exhaust
DCV MODE LIGHT
EXHAUST FAN ENERGIZED
SETPOINT
EXHAUST FAN ENERGIZED LIGHT
NOTE: ALL INPUT AND OUTPUT WIRING MUST BE 24 VAC CLASS 2.
The W7215A is an economizer module for use
with series 72 actuators. The W7215B is
similar except for an outside air content sensor
input and slightly different contact inputs and
M23898A
outputs. The W6215A was for use with series
62 actuators but otherwise identical to the
W7215A. The W7460A was for use with the
M7415 actuator.
W7215B and W7460B Components
The W7215B and W7460B are equipped with
outdoor air content sensor inputs. There are
slight variations to the input and output
terminals:
• The purge function is eliminated.
• An alarm contact output is added for when
the indoor DCV and outdoor air content
setpoints are simultaneously exceeded.
71
• The exhaust fan setpoint and exhaust
indication light are eliminated.
• An outdoor air content sensor setpoint and
indication light are added.
Honeywell Economizers 63-8594-01
Section 8- W6215, W7215 And W7460 Economizer Modules
W6215, W7215, W7460 Inputs and Outputs
This series of economizer modules includes
input and output contacts for use in controlling
the fans and conditioning equipment on the air
handler. Some of these contacts are not
available on all modules.
Input and Output Applications
FREE
COOLING
HOUR
COUNTER
EXHAUST FAN
SETPOINT
FREE
COOL
HEATING COIL
UNIT
CONTROL
COOLING COIL
EXHAUST AIR
EXHAUST
FAN
FAN
W6215A
W7215A
W7460A
ECONOMIZER
MODULES
INDOOR
FAN
Exhaust
Fan
SD
AC
PG
OCCUPANCY
TIMER
AC1
PG1
AC
AC1
50% PG
PG1
ISI
Indoor
Fan
SD1
0%
100%
Exhaust
Set Pt
Exhaust
SMOKE, FIRE
DETECTION
CIRCUIT
M13841A
NOT TO BE USED AS A LIFE SAFETY DEVICE
Options Available on A Models
FREE COOLING
HOUR COUNTER
TO AIR CLEANER OR
AIR CONTENT ALARM
EXHAUST AIR
FAN
FREE
COOL
ALARM
SD1
AC
AC1
ISI
UNIT
CONTROL
EXHAUST
FAN
W7215B
W7460B
ECONOMIZER
MODULES
INDOOR
FAN
6V 0A
2V
100%
OSI
Set Pt
SD
SD1
AC
AC1
OCCUPANCY
TIMER
NOT TO BE USED AS A LIFE SAFETY DEVICE
OSI
DCV SENSOR
SETPOINT
DCV MODE LIGHT
0A1
OUTDOOR AIR
CONTENT SENSOR
SETPOINT
OUTDOOR AIR
CONTENT
MODE LIGHT
M13842A
Options Available on B Models
63-8594-01 Honeywell Economizers
AQ1
10V
ISI
Set Pt SD
2V
HEATING COIL
COOLING COIL
6V AQ
+
72
Section 8 - W6215, W7215 And W7460 Economizer Modules
Minimum and Maximum Settings
DAMPER POSITION
Mininum
Position 3
Open
100% OPEN
4
T
T1
P
P1
C7150 OR C7046
MIXED OR SUPPLY
AIR SENSOR
00
80
12
6
Free Cool
Maximum
Position
Q
4
°F
1 0
0
0
Closed
6V AQ
2V
10V
REMOTE MINIMUM
POSITION CONTROL
DCV MIN
POSITION
CODE VENTILATION RATE
100
80
Q1
140
F
40
REMOTE MINIMUM
POSITION CONTROL
MIN POS
AQ1
AN1
C7232 OR C7632
DCV CO2 SENSOR
GND
0% OPEN
450 PPM
p m
800 PPM
2000 PPM
CO2 LEVEL
M23923A
This series of economizer modules includes
both minimum and maximum damper position
settings. Previous economizer controls are
equipped with only a minimum setting to
maintain a volume of outside air for ventilation.
The minimum setting on these modules is to
ventilate for the building components when
using DCV or to ventilate for cfm per person
for maximum occupancy when not using DCV.
The maximum setting is used to limit the
amount of outside air brought into the air
handler.
73
NORMAL OPERATION WITHOUT DCV
CO2 SENSOR ONLY
DCV ECONOMIZER FULL OCCUPANCY
DCV ECONOMIZER
M23972A
When using DCV, this is the sum of the
ventilation for the building components and
maximum human occupancy. See above
diagram for control of dampers using DCV and
minimum and maximum damper positions.
When DCV is not used this setting can be
used to limit the amount of outside air brought
into the system.
If the dampers are being modulated as the first
stage of cooling from the commercial
thermostat, the DCV maximum setting is not in
the circuit and the dampers can be opened
fully as needed. If the dampers are being
modulated from both the thermostat and the
DCV sensor, the dampers will be opened to
whichever is a higher signal. If the mixed air
temperature decreases below 40°F (4°C) the
signal from the DCV sensor is ignored and the
dampers are modulated toward closed to
prevent freezing of coils and other equipment
in the air handling unit.
Honeywell Economizers 63-8594-01
Section 8- W6215, W7215 And W7460 Economizer Modules
Indoor Air Content Sensor Settings
24VAC
TR Hot
B
C
24VAC
Hot
24VAC
Com
A
ECONOMIZER
MODULE WITH
DCV SENSOR INPUT
TR1
Com
D
So
Sr
C7242 INDOOR
AIR CONTENT
CO2 SENSOR
+
+
5
1
+
Free
Cool
Alarm
4
T
T1
P
P1
Open
W7215B
2 10V
OUT
Exhaust
Fan
Indoor
Fan
DCV SENSOR
INPUT ON
TEMINALS
AQ AND AQ1
F ee Coo ng
Maximum
Pos tion
Q
Q1
Close
6V AQ
+
AQ1
10V
2V
Un t
Control
2
Mininum
Posi ion 3
SI
Set Pt SD
SD1
AC
1
6V 0A
0A1
ISI
2V
100%
OSI
SENSOR OUTPUT
IN VOLTS DC
ROOM CONCENTRATION CARBON
DIOXIDE IN PARTS PER MILLION
0
500
1
650
2
800
3
950
4
1100
5
1250
6
1400
7
1550
8
1700
9
1850
10
2000
Set Pt
OSI
6V
10V
DCV
Set Pt
2V
M23925A
The DCV input can be any sensor with a 2 to
10 Vdc output such as the Honeywell C7242,
C7232 or C7632 carbon dioxide (CO2)sensor.
The sensor is supplied with preset
configurations that can be used if they meet
63-8594-01 Honeywell Economizers
74
the application requirements. The output chart
illustrated on the right side of this page is the
Analog 1 configuration of startpoint and
throttling range for a linear output.
Section 8 - W6215, W7215 And W7460 Economizer Modules
Carbon Dioxide Sensor Setup
CO2
Sensors
Wall Mount
With Relay
Display
C7242A1030
No Display
C7242A1048
Wall Mount
Duct Mount
Outside Air
C7242A1014
C7242B1012
Not Available
C7242A1022
C7242B1020
C7232E1007
A1 Output
A2 Output
0 Vdc = 500 ppm
Relay Output:
(2 Vdc = 800 ppm) and 0 to 800 ppm = Open,
10 Vdc = 2,00 ppm
More than 800 ppm = Closed,
Reopens at less than 700 ppm
Analog Sensor Mode:
0 Vdc = 500 ppm
(2 Vdc = 800 ppm) and
10 Vdc = 2,000 ppm
Time interval = 2 seconds
For applications where factory configurations
do not meet the application requirements the
sensor may be re-configured by the installer to
meet most configuration needs.
75
Most installers prefer to use a C7632 CO2
sensor that does not need to be programed or
adjusted when installed. The CO2 sensors
can be located either in the space next to the
thermostat or in the return air duct. The
location is the preference of the installer.
Honeywell Economizers 63-8594-01
Section 8- W6215, W7215 And W7460 Economizer Modules
Outdoor Air Content Sensor
Outdoor Air
Content
Sensor
DCV
Below
Below
Setpoint
Setpoint
Above
Setpoint
Above
Setpoint
Below
Setpoint
Above
Setpoint
Mixed Air Damper Actuator
Modulation based on signal from mixed air
temperature sensor.
Modulation between minimum and maximum
positions based on signal from either mixed air
or indoor air content sensors, whichever signal
is higher.
Closed fully.
Modulation based on signal from mixed air
temperature sensor. Terminals labeled Alarm
made to energize warning light, audio alarm or
air cleaner.
The purpose of the DCV sensor is different
from that of the outdoor air content sensor. On
the economizer modules equipped with
outdoor air content sensors the purpose of the
sensor is to keep the outside air dampers at a
63-8594-01 Honeywell Economizers
76
Outdoor Air
Content Sensor
Alarm
Light
Contacts
Off
Open
Off
Open
On
Open
On
Closed
minimum position if the outdoor air is above its
setpoint threshold. Alarm contacts on the
economizer module will close if both the
outdoor and indoor air (DCV) signals are
above their respective setpoint thresholds.
Section 8 - W6215, W7215 And W7460 Economizer Modules
W6215, W7215 and W7460 Actuator Usage
MS7503 OR MS7505
ACTUATOR
60
30
90
W7210 OR W7215
ECONOMIZER
MODULE
W7210 OR W7215
ECONOMIZER
MODULE
60
M7415 ACTUATOR
30
500
0
L2
L1
TR
24 VAC
HOT
24 VAC
500
24 VAC
COM
TR1
24 VAC
HOT
24 VAC
COM
SENSOR T
1
T1
P1
MIN
POSN P
RED
<
+
+
BLACK
WHITE
Q769C MINIMUM
POSITION POTENTIOMETER
+
2-10V
OUT
_
2 10V
OUT
1
M13830A
The W7460 can only be used with the M7415
actuator. The W7215 can be used with series
72 actuators (Direct Coupled Actuators,
M7215 and Modutrol motors). The W6215 is
only usable with series 62 actuators.
77
WHEN USING THE W7210 OR W7215 WITH A M7415
ACTUATOR, THE MIXED OR DISCHARGE AIR SENSOR
MUST BE CONNECTED TO THE LOGIC MODULE AND
NOT THE ACTUATOR.
M13827A
NOTE: In the past the series 72 (W7212,
W7215) economizer modules were
used with the M7415 motor if a 210Vdc to 3k ohm module was used.
This is no longer available and all
series 72 economizers should be used
with M72XX motors.
Honeywell Economizers 63-8594-01
Section 8- W6215, W7215 And W7460 Economizer Modules
W6215, W7215 and W7460 Wiring Diagram
W7215A
24 VAC HOT
HONEYWELL
SERIES 72
ACTUATOR
24 VAC COM
(ML7275,
ML7285,
ML7295A,C
M7275,
M7285)
TR
TR1
SO
+
SR
+
620 OHM
RESISTOR
6
5
1K
1S
1
2
3
4
T
T1
P
P1
Q
Q1
AQ
AQ1
9
9
4
C7150B
MIXED AIR
OR C7046A
DISCHARGE
AIR SENSOR
2K
+
+
C7400
+ OUTDOOR
AIR
S ENTHALPY
SENSOR
2-10 VDC
OUT
1S1
MINIMUM POSITION
ADJUSTMENT
5
FREE
COOL
MAXIMUM
POSITION
ADJUSTMENT
+
UNIT
CONTROL
SD
EXHAUST
FAN
AC
INDOOR
FAN
PG
2-10 VDC
INDOOR
AIR SENSOR
SD1
SHUT DOWN
AC1
AIR CHANGE
PG1
PURGE
C
T6031 AMBIENT
LOCKOUT
CONTROL
50 F SETPOINT
8
Y1
COOL 1
W2
W2
HEAT 2
W1
W1
HEAT 1
Y1
W
Y2
R
OCCUPIED
FAN
DELAY
RELAY
G
RH
FDR
FAN
G
RC
FDR
7
X
R
T7300 OR T874
THERMOSTAT
HVAC EQUIPMENT
TERMINAL STRIP
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2
ACTUATOR SPRING-RETURNS CLOSED WHEN FAN IS NOT RUNNING.
3
ENSURE THAT TRANSFORMER IS SIZED TO HANDLE THE EXTRA
LOAD OF THE ECONOMIZER AND ACTUATOR.
4
1S IS AN ELECTRONIC SWITCH THAT CLOSES WHEN POWERED
BY A 24 VAC INPUT.
5
FOR THE ML7295A,C, USE THE 4-20mA MODEL ACTUATOR. THESE
MODELS HAVE 500 OHM INPUT IMPEDENCE THAT ALLOWS THE
ACTUATOR TO ACCEPT A 2-10 VDC SIGNAL.
2
78
3
L2
L1 1
(HOT)
6 FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD NOT BE
REMOVED. DIFFERENTIAL ENTHALPY NOT RECOMMENDED FOR USE
WITH SINGLE-STAGE COOLING SYSTEMS OR SINGLE-STAGE COOLING
THERMOSTATS.
7 FOR T7300 ONLY.
8 FOR T7300, USE CONTACTS A1 AND A2 INSTEAD OF THE TIMER.
9 FOR TWO-STAGE COMMERCIAL THERMOSTATS ONLY.
W7215A used in single-stage cooling system with single
enthalpy changeover and Honeywell Series 72 Actuator
63-8594-01 Honeywell Economizers
UNOCCUPIED
ST6008
TIMER
M11804B
Section 8 - W6215, W7215 And W7460 Economizer Modules
W7215A
24 VAC HOT
HONEYWELL
SERIES 72
ACTUATOR
24 VAC COM
(MS7503 OR
MS7505)
TR
TR1
SO
+
SR
+
C7400
OUTDOOR
AIR
ENTHALPY
SENSOR
+
S
620 OHM
RESISTOR
5
5
1S
1K
4
2
3
4
T
T1
P
P1
C7150B
MIXED AIR
OR C7046A
DISCHARGE
AIR SENSOR
2K
+
+
1
2-10V
OUT
1S1
5
MINIMUM POSITION
ADJUSTMENT
FREE
COOL
MAXIMUM
POSITION
ADJUSTMENT
Q
Q1
AQ
AQ1
T6031 AMBIENT
LOCKOUT
CONTROL
50 F SETPOINT
+
UNIT
CONTROL
EXHAUST
FAN
INDOOR
FAN
SD
AC
PG
W
R
2-10 VDC
INDOOR
AIR SENSOR
SD1
SHUT DOWN
AC1
AIR CHANGE
PG1
PURGE
UNOCCUPIED
ST6008
TIMER
C
Y1
Y1
COOL 1
Y2
Y2
COOL 2
W2
W2
HEAT 2
W1
W1
HEAT 1
FAN
DELAY
RELAY
G
FDR
RH
FAN
G
RC
FDR
6
R
X
HVAC EQUIPMENT
TERMINAL STRIP
T7300 OR T874
THERMOSTAT
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2
ACTUATOR SPRING-RETURNS CLOSED WHEN FAN IS NOT RUNNING.
3
ENSURE THAT TRANSFORMER IS SIZED TO HANDLE THE EXTRA
LOAD OF THE ECONOMIZER AND ACTUATOR.
4
1S IS AN ELECTRONIC SWITCH THAT CLOSES WHEN POWERED
BY A 24 VAC INPUT.
7
OCCUPIED
2
3
L2
1
L1
(HOT)
5 FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD BE REMOVED
ONLY WHEN A C7400 ENTHALPY SENSOR IS ADDED TO SR AND + FOR
DIFFERENTIAL ENTHALPY.
6 FOR T7300 ONLY.
7 FOR T7300, USE CONTACTS A1 AND A2 INSTEAD OF THE TIMER.
M11801B
W7215A used in two-stage cooling system with Honeywell Series 72 Actuator
79
Honeywell Economizers 63-8594-01
Section 8- W6215, W7215 And W7460 Economizer Modules
W7460A
TR
TR1
SO
+
SR
+
+
S
620 OHM
RESISTOR
5
1K
1S
3
P1
M7415
OUT
P
TR1 TR
1
L1 1
(HOT)
4
T
T1
P
P1
C7150B
MIXED AIR
OR C7046A
DISCHARGE
AIR SENSOR
1S1
Ð
MINIMUM POSITION
ADJUSTMENT
FREE
COOL
L2
3
2K
+
MAXIMUM
POSITION
ADJUSTMENT
T6031 AMBIENT
LOCKOUT
CONTROL
50 F SETPOINT
Q
Q1
AQ
AQ1
+
UNIT
CONTROL
SD
SD1
SHUT DOWN
EXHAUST
FAN
AC
AC1
AIR CHANGE
INDOOR
FAN
PG
PG1
PURGE
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED. M7415 MOTOR
MUST USE AN INDEPENDENT TRANSFORMER.
R
4
C
Y1
Y1
COOL 1
3
1S IS AN ELECTRONIC SWITCH THAT CLOSES WHEN
POWERED BY A 24 VAC INPUT.
Y2
Y2
COOL 2
4
FOR T7300, USE CONTACTS A1 AND A2 INSTEAD OF
THE TIMER.
W2
W2
HEAT 2
FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR
SHOULD BE REMOVED ONLY WHEN A C7400 ENTHALPY
SENSOR IS ADDED TO SR AND + FOR DIFFERENTIAL
ENTHALPY.
W1
W1
HEAT 1
5
FDR
RH
FAN
G
RC
T7300 OR T874
THERMOSTAT
OCCUPIED
FAN
DELAY
RELAY
G
X
UNOCCUPIED
ST6008
TIMER
6
ACTUATOR SPRING-RETURNS CLOSED WHEN FAN
IS NOT RUNNING.
FOR T7300 ONLY.
W
2-10 VDC
INDOOR
AIR SENSOR
2
6
5
2
1
M7415
C7400
OUTDOOR
AIR
ENTHALPY
SENSOR
R
FDR
2
HVAC EQUIPMENT
TERMINAL STRIP
1
L2
L1
(HOT)
W7460A used in two-stage cooling system with M7415 Motors
63-8594-01 Honeywell Economizers
80
M11802C
Section 9 - W7212, W7213 and W7214 Economizer Modules
Section 9 - W7212, W7213 and W7214
Economizer Modules
81
Honeywell Economizers 63-8594-01
Section 9 - W7212, W7213 and W7214 Economizer Modules
W7212 Economizer System Components
DAMPER
EXHAUST
AIR
+
S
RETURN
AIR SENSOR
RETURN AIR
FROM ROOM
DAMPER
OUTSIDE
AIR SENSOR
SUPPLY
AIR TO
BUILDING
+
S
MIXED AIR
SENSOR
COILS
FAN
W7212 ECONOMIZER
CONTROLLER
WITH DEMAND
CONTROL
VENTILATION
C7632 ROOM
CARBON DIOXIDE
SENSOR
TB8220
COMMERCIAL
PRO
63-8594-01 Honeywell Economizers
M23900A
82
Section 9 - W7212, W7213 and W7214 Economizer Modules
W7212, W7213, and W7214 Components
The W7212 DCV economizer logic module
was the simplest and most popular analog
economizer. It combined all of the benefits of
the W7459 and W7210 with the some features
of the W7215. It did not include shutdown, air
change and purge but had an “N” terminal for
occupancy. On W7213 and W7214 models N
terminal is either B or O terminal for use with
heat pumps.
All models could be panel mounted or directly
mounted to the M7215 motor.
EXHAUST
FAN SETPO NT
LED LIGHTS
WHEN EXHAUST
CONTACT IS MADE
M N MUM DAMPER
POSITION SETTING
DEMAND CONTROL
VENTILAION SETPO NT
ENTHALPY
SENSORS
2V
DCV
Max
10V
AQ1
DCV
AQ
DCV
Set
10V
SO
SR+
LED LIGHTS WHEN
OUTDOOR AIR IS
SUITABLE FOR
FREE COOL NG
ENTHALPY
CHANGEOVER SETPOINT
Free
Cool
B
C
A
D
M20604
Potentiometer and LED locations
(W7212 shown)
P1
P
EXH
Set
EXH
Min
Pos
SO+
Open
T
SR
N
AQ1
Min
Pos
2V
T
TR
TR1
24
VAC
HOT
24
VAC
COM
+
Open
IAQ
Max
CO2
SENSOR
EXH
Set
10V
P
SO+
N1
T1
2V
EXH
P1
MAX MUM DAMPER
DEMAND CONTROL
VENTILATION SETPO NT
LED LIGHTS WHEN
DEMAND CONTROL
VENT LAION INPUT
IS ABOVE SETPOINT
NIGHT
SET BACK
MIXED AIR
SENSOR
N
T1
There were three models:
• W7212A- Used with series 70 actuators
including DCA’s and Modutrol Motors
• W7213A - Used with heat pumps or
conventional rooftop units. B terminal
energized in heating and unenergized in
cooling
• W7214A - Used with heat pumps or
conventional rooftop units. O terminal
unenergized in heating and energized in
cooling.
REMOTE
MINIMUM
POT INPUT
N1
1
IAQ
AQ
IAQ
MIN
SO
Free
Cool
SR
SR+
B
C
A
D
2
5
3
4
EF
EF1
M23970A
Power at the N terminal determines the
Occupied/Unoccupied setting:
— If Call for cooling - dampers open to satisfy the mixed or discharge air sensor if
outdoor air is good enthalpy
• N terminal unpowered – Space Unoccupied:
— If No call for cooling - damper drives
closed if economizer is powered
— If Call for cooling - dampers open to satisfy the mixed or discharge air sensor if
outdoor air is good enthalpy
For the W7212:
• 24 Vac (Occupied)
• No power (Unoccupied)
• N terminal powered – Space Occupied:
— If No Call for cooling or bad outdoor
enthalpy - dampers drive to minimum
position
83
Honeywell Economizers 63-8594-01
Section 9 - W7212, W7213 and W7214 Economizer Modules
All other inputs are same as other logic
modules, for space consideration the enthalpy
sensor terminals were moved to left side of
control.
The exhaust setpoint determines when the
exhaust fan runs based on damper position.
When the exhaust fan call is made, the
module provides a 60 ±30 second delay
before exhaust fan activation. This delay
allows the damper to reach the appropriate
position to avoid unnecessary fan overload.
Same input for TR-TR1 for 24 Vac power to
logic module and output to mechanical
cooling.
EF and EF1 are 24V dry contacts only. An
external line voltage contactor is required to
operate the exhaust fan.
Output for 2-10 Vdc and 24 Vac power to
actuator is on the right side of the unit and
power exhaust fan output.
When the exhaust fan is deactivated the EF
and EF1 relay opens immediately.
POWERED WHEN
OCCUPIED
24 VAC INPUT
LED LIGHTS WHEN
EXHAUST FAN CONTACTS
ARE CLOSED
N1
N
MINIMUM DAMPER
POSITION SETTING
P1
P
MAXIMUM DCV
SETPOINT
LED LIGHTS WHEN
DCV INPUT IS
ABOVE SETPOINT
EXH
Set
EXH
Min
Pos
T1
T
SO+
DCV SETPOINT
24
VAC
HOT
24
VAC
COM
IAQ
MIN
SO
Free
Cool
SR
B
C
A
D
ENTHALPY
CHANGEOVER SETPOINT
24 VAC TO
ACTUATOR
2-10 VDC TO
ACTUATOR
OUT TO COOL 1
1
IAQ
AQ
SR+
LED LIGHTS WHEN
OUTDOOR AIR IS
SUITABLE FOR
FREE COOLING
TR1
+
Open
IAQ
Max
AQ1
TR
2
5
3
4
EF
EF1
OUT TO COOL 2
EXHAUST
FAN OUTPUT
M23969B
The exhaust setpoint determines when the
exhaust fan runs based on damper position.
Full CCW is fully closed damper position and
Full CW is fully open damper position.
When the EF and EF1 contacts are made after
the 60 ±30 sec. delay, the EXH LED will
illuminate.
Damper minimum position and maximum
position are the positions of the damper for
ventilation for building contaminants and
people occupancy. See section 1 for
explanation of DCV and determination of
damper settings.
DCV Maximum Position
Adjustment
1. Disconnect mixed air sensor from
terminals T and T1 and short terminals T
and T1.
2. Connect a jumper between terminals AQ
and SO+.
3. Connect 24 Vac across terminals TR and
TR1.
4. Adjust the potentiometer on the face of
the device with a screwdriver for desired
maximum position.
5. If all minimum and maximum position
adjustments are complete, remove the
T-T1 jumper and reconnect the mixed air
sensor.
63-8594-01 Honeywell Economizers
84
Section 9 - W7212, W7213 and W7214 Economizer Modules
NOTE: If there is not a AQ (air quality or CO2
sensor) connected, then set the DCV
MAX to complete CCW position and
use the Min Pos potentiometer to set
the Minimum position of the damper.
When the mixed air sensor takes control
based on an increased requirement for
cooling, it overrides the DCV maximum
position potentiometer and can drive the
damper full-open.
If the mixed air temperature drops to 45°F, the
mixed air sensor overrides the DCV and fully
closes the damper to protect from freezing the
hot or chilled water coils. Control returns to
normal once the mixed air temperature rises to
48°F.
DCV setpoint is the same as the W7215. The
setpoint is based on the output of the CO2
sensor (e.g., 0-10 Vdc output for CO2 ppm of
500-1500 ppm where 0 Vdc = 500 ppm and 10
Vdc = 1500 ppm. If setpoint is 1000 ppm or 6
Vdc, then the OA damper will begin to module
open when output from CO2 sensor is 6 Vdc).
DCV LED light will illuminate when CO2 level
is above setpoint.
Using Multiple CO2 sensors on
the AQ-AQ1 terminals for zones
You can add up to five (5) CO2 sensors from
different spaces to the W7212 economizer.
The CO2 sensor with the highest call will take
precedence and the outdoor dampers will
drive open based on the highest CO2 sensor
output OR the call for free cooling for the
economizer. The other four (4) remaining
spaces will be ventilated to the same level
unless there is a mechanical ventilation limit in
the system. There must be one schottky diode
(BAT43 or IN5819) in series with the + from
the sensor to the + (AQ) terminal on the
85
W7212. Each sensor must have the diode in
series. Each C7232 sensor puts out about 0.2
volts more than is put on the AQ+ line due to
the inherent 0.2 volt drop across each diode.
The AQ+ line will be 0.2 V lower than the
highest C7232 output. When that output
crosses the threshold set on the DCV set pot,
the motor will drive towards open. You need to
be aware that the AQ+ line will never reach 10
V but will max at near 9.8 V due to the diodes.
Free cool LED illuminates when outdoor air is
suitable for free cooling whether Y1 from the
commercial thermostat is calling for cooling or
not.
The W7212 uses the electronic A, B, C, D and
high enthalpy curves on the psychrometric
chart.
Minimum Position Adjustment
The following provides basic guidelines for
minimum position selection and adjustment:
IMPORTANT
Adjust the minimum position potentiometer to allow the minimum amount of
outdoor air for building effluents, as
required by local codes, to enter the
building. This procedure requires use of
a quality thermometer capable of reading to 0.5°F (0.25°C).
NOTE: Make minimum position adjustments
with at least a 10°F (-12°C)
temperature difference between
outdoor and return air.
1. Calculate the appropriate mixed air
temperature, see the Equation below.
2. Disconnect mixed air sensor from
terminals T and T1.
3. Place a jumper across terminals T and
T1.
Honeywell Economizers 63-8594-01
Section 9 - W7212, W7213 and W7214 Economizer Modules
4. Ensure that either the factory-installed
jumper is in place across terminals P and
P1 or, if remote damper position is
required, that it is wired according to the
image below, turned fully clockwise.
W
R
MINIMUM
POSITION
ADJUSTMENT
P1
P
B
NOTE: The following sample calculation uses
only Fahrenheit temperature.
EXAMPLE: Assume local codes require 10%
outdoor air during occupied conditions,
outdoor air is 60°F and return air is 75°F.
Under these conditions, what is the
temperature of the mixed air?
S963B1128 REMOTE
POTENTIOMETER
CW
CLOSE
TM = Resulting mixed air temperature
CW
(0.1 × 60°F) + (0.9 × 75°F) =
ECONOMIZER
6.0°F + 67.5°F = 73.5°F
M20603A
S963B1128 Remote Potentiometer used with
logic module for remote damper control
5. Connect 24 Vac across terminals TR and
TR1.
6. Carefully adjust the potentiometer on the
face of the device with a small
screwdriver until the mixed air
temperature reaches the calculated
value.
NOTE: Ensure that the sensed air is well
mixed.
7. If all minimum and maximum position
adjustments are complete, remove the
T-T1 jumper and reconnect the mixed air
sensor.
Dry bulb changeover
Single or differential economizing can be
accomplished using temperature instead of
enthalpy. With any of the analog economizers
you need to use a C7660 dry bulb sensor with
a 4mA or 20 mA output to the economizers for
single (referential) changeover. The sensor
determines if the outdoor air is above or below
the selected setpoint and either sends a 4 mA
signal (NOT OK to economize) or a 20mA
signal (OK to economize) to the logic module.
For differential changeover you need to use a
C7650 sensor in the outdoor air and a C7650
sensor in the return air. CAUTION: You cannot
use a C7760 sensor in the outdoor air and one
in the return air for differential control, the
system will not work.
Formula to aid minimum position
adjustment
(TO × OA) + (TR × RA)= TM
Where:
TO = Outdoor air temperature
OA = Percent of outdoor air
TR = Return air temperature
RA = Percent of return air
63-8594-01 Honeywell Economizers
Mixed air will be 73.5°F when OA is 60°F and
RA is 75°F with 10% outdoor air.
See the sensor section of this manual for
additional explanation of the sensor operation.
86
Section 9 - W7212, W7213 and W7214 Economizer Modules
W7212, W7213, and W7214 Wiring Diagram
TR
TR1
24
Vac
HOT
24 Vac
COM
N1
N
24 VAC HOT
MINIMUM POSITION
ADJUSTMENT
P1
C7150B MIXED
AIR OR C7046A
DISCHARGE
AIR SENSOR
P
T1
+
2-10 VDC CONTROL
T
SIGNAL OUTPUT
1
2-10 VDC
INDOOR AIR
SENSOR
AQ1
–
24 VAC COM
2
5
AQ
+
SO+
3
4
EF
EF1
SO
SR+
M7215
SR
C7400
OUTDOOR +
AIR
ENTHALPY S
SENSOR
W7212
4
5
620 OHM
RESISTOR
L1
(HOT)
L2
EXHAUST
FAN
Y1
C
Y2
Y1
COOL 1
W2
Y2
COOL 2
W2
HEAT 2
W1
HEAT 1
W1
AUX
3
A2
G
RH
G
FAN
2
RC
L2
1
L1
(HOT)
R
X
T7350
THERMOSTAT
HVAC EQUIPMENT
TERMINAL STRIP
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2
ENSURE THAT TRANSFORMER IS SIZED TO HANDLE THE EXTRA LOAD OF THE ECONOMIZER AND ACTUATOR.
THE SAME TRANSFORMER CAN BE USED FOR THE COMMERCIAL THERMOSTAT AND ACTUATOR.
3
IF SEPARATE HEATING AND COOLING TRANSFORMERS ARE USED, REMOVE JUMPER AT THERMOSTAT.
T7350 - TERMINAL “AUX” IS POWERED BY THE HEATING TRANSFORMER (RH).
IF POWERING THE ECONOMIZER TERMINAL “N” WITH THE THERMOSTAT TERMINAL “AUX”, BE SURE THE ECONOMIZER IS POWERED BY THE
SAME TRANSFORMER AS TERMINAL “AUX”. IF NOT, USE AN ISOLATION RELAY TO POWER “N”.
4
FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD NOT BE REMOVED. DIFFERENTIAL ENTHALPY NOT RECOMMENDED FOR USE
WITH SINGLE-STAGE COOLING SYSTEMS OR SINGLE-STAGE COOLING THERMOSTATS.
5
EF AND EF1 ARE DRY CONTACTS IN THE LOGIC MODULE.
M13657C
W7212 used with M7215 Damper Motor and T7350 Thermostat
87
Honeywell Economizers 63-8594-01
Section 9 - W7212, W7213 and W7214 Economizer Modules
TR
TR1
24
Vac
HOT
24 Vac
COM
N1
N
24 VAC HOT
MINIMUM POSITION
ADJUSTMENT
P1
P
C7150B MIXED
AIR OR C7046A
DISCHARGE
AIR SENSOR
T1
+
2-10 VDC CONTROL
T
SIGNAL OUTPUT
1
2-10 VDC
INDOOR AIR
SENSOR
AQ1
–
24 VAC COM
2
5
AQ
+
SO+
3
4
EF
EF1
SO
SR+
M7215
SR
C7400
OUTDOOR +
AIR
ENTHALPY S
SENSOR
W7212
4
5
620 OHM
RESISTOR
L1
(HOT)
L2
EXHAUST
FAN
Y1
C
Y2
Y1
COOL 1
W2
Y2
COOL 2
W2
HEAT 2
W1
HEAT 1
W1
3
A
A
G
R
G
FAN
RC
R
X
TB7220 OR TB8220
THERMOSTAT
2
L2
L1 1
(HOT)
HVAC EQUIPMENT
TERMINAL STRIP
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2
ENSURE THAT TRANSFORMER IS SIZED TO HANDLE THE EXTRA LOAD OF THE ECONOMIZER AND ACTUATOR.
THE SAME TRANSFORMER CAN BE USED FOR THE COMMERCIAL THERMOSTAT AND ACTUATOR.
3
IF SEPARATE HEATING AND COOLING TRANSFORMERS ARE USED, REMOVE JUMPER AT THERMOSTAT.
TB7220 - TERMINAL “A” IS POWERED BY THE COOLING TRANSFORMER (RC).
TB8220 - TERMINAL “A” IS POWERED BY THE HEATING TRANSFORMER (R).
IF POWERING THE ECONOMIZER TERMINAL “N” WITH THE THERMOSTAT TERMINAL “A”, BE SURE THE ECONOMIZER IS POWERED BY THE
SAME TRANSFORMER AS TERMINAL “A”. IF NOT, USE AN ISOLATION RELAY TO POWER “N”.
4
FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD NOT BE REMOVED. DIFFERENTIAL ENTHALPY NOT RECOMMENDED FOR USE
WITH SINGLE-STAGE COOLING SYSTEMS OR SINGLE-STAGE COOLING THERMOSTATS.
M13658C
5 EF AND EF1 ARE DRY CONTACTS IN THE LOGIC MODULE.
W7212 used with M7215 Damper Motor and TB7220 or TB8220 Thermostats
63-8594-01 Honeywell Economizers
88
Section 9 - W7212, W7213 and W7214 Economizer Modules
TR
TR1
24
Vac
HOT
24 Vac
COM
N1
~
N
1
2
+
3
4
F
5
MINIMUM POSITION
ADJUSTMENT
P1
C7150B MIXED
AIR OR C7046A
DISCHARGE
AIR SENSOR
P
T1
+
T
1K
1S
MS7XXX
HONEYWELL
ACTUATOR
2-10 VDC
INDOOR AIR
SENSOR
3
AQ1
–
1
2K
2
5
AQ
+
SO+
3
4
EF
EF1
1S1
SO
SR+
SR
C7400
OUTDOOR +
AIR
ENTHALPY S
SENSOR
W7212
5
7
620 OHM
RESISTOR
C
Y1
COOL 1
Y2
COOL 2
W2
W2
HEAT 2
W1
W1
HEAT 1
Y1
W
Y2
R
T6031 AMBIENT
LOCKOUT
CONTROL
50 F SETPOINT
8
L1
(HOT)
L2
EXHAUST
FAN
6
FAN
DELAY
RELAY
G
RH
UNOCCUPIED
ST6008
TIMER
OCCUPIED
9
FDR
FAN
G
RC
2
L2
FDR
4
1
L1
(HOT)
R
X
T7300 OR T874
THERMOSTAT
HVAC EQUIPMENT
TERMINAL STRIP
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2
ENSURE THAT TRANSFORMER IS SIZED TO HANDLE THE EXTRA
LOAD OF THE ECONOMIZER AND ACTUATOR.
3
1S IS AN ELECTRONIC SWITCH THAT CLOSES WHEN POWERED
BY A 24 VAC INPUT.
4
FOR T7300 ONLY
5
FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD BE
REMOVED ONLY WHEN A C7400 ENTHALPY SENSOR IS ADDED TO
SR AND SR+ FOR DIFFERENTIAL ENTHALPY.
6
USE THE FOLLOWING CONTACTS INSTEAD OF TIMER
FOR T7300, USE A1 AND A2 TERMINALS.
FOR T7350 USE AUX TERMINAL.
FOR TB7220 OR TB8220 USE A TERMINAL
THE TERMINALS ARE CONNECTED WHEN THERMOSTAT IS IN THE OCCUPIED MODE.
7
EF AND EF1 ARE DRY CONTACTS IN THE LOGIC MODULE.
8
SEE WIRING DIAGRAMS FIGS 9 AND 10 FOR T7350 AND TB7220/TB8220.
9
TIME CLOCK IS AN OPTION TO USING OCCUPIED CONTACTS ON THE
COMMERCIAL THERMOSTAT.
M13660B
W7212A used in two-stage cooling system with Honeywell
Series 72 Actuator and time clock for occupancy
89
Honeywell Economizers 63-8594-01
Section 9 - W7212, W7213 and W7214 Economizer Modules
~
1
2
+
5
3
O
TR
TR1
24
Vac
HOT
24 Vac
COM
N
4
F
MINIMUM POSITION
ADJUSTMENT
P1
5
P
MS7XXX
HONEYWELL
ACTUATOR
T1
C7150B
DISCHARGE
AIR SENSOR
+
T
1
2-10 VDC
INDOOR AIR
SENSOR
AQ1
–
2
4
AQ
+
SO+
3
5
EF
EF1
SO
SR+
SR
W7214
3
2
620 OHM
RESISTOR
C7400
OUTDOOR +
AIR
ENTHALPY S
SENSOR
A3
4
C
A2
Y1
Y1
COOL 1
Y2
Y2
COOL 2
W2
W2
HEAT 2
W1
W1
HEAT 1
G
G
FAN
RH
L1
(HOT)
L2
EXHAUST
FAN
L2
R
RC
1
L1
(HOT)
X
5
O
O
T7300
THERMOSTAT
HVAC EQUIPMENT
TERMINAL STRIP
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2
EF AND EF1 ARE DRY CONTACTS IN THE LOGIC MODULE.
3
FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD BE REMOVED ONLY WHEN A
C7400 ENTHALPY SENSOR IS ADDED TO SR AND SR+ FOR DIFFERENTIAL ENTHALPY.
4
T7300 TERMINALS A2 AND A3 ARE CONNECTED WHEN THERMOSTAT IS IN THE UNOCCUPIED MODE.
SEE T7350 AND TB7220/TB8220 WIRING.
5
W7213: B TERMINAL
W7214: O TERMINAL
M19618E
W7213, W7214 controlling heat pump system
63-8594-01 Honeywell Economizers
90
Section 9 - W7212, W7213 and W7214 Economizer Modules
COMMERCIAL
THERMOSTAT
DISCHARGE
AIR SENSOR
DIRECT
EXPANSION
COIL
2
C7046A
C7232
W7212,
W7213,
W7214
C7150B
DCV
SENSOR
2
1
MIXED AIR
SENSOR
INDOOR
FAN
C7400
ENTHALPY
SENSOR
HONEYWELL
ACTUATOR
DISCHARGE
AIR
OUTDOOR
AIR
1
C7400
1
2
ENTHALPY
SENSOR
FOR DIFFERENTIAL ENTHALPY, THE TWO C7400
ENTHALPY SENSORS ARE CONNECTED TO THE
ECONOMIZER LOGIC MODULE—ONE
IS MOUNTED IN RETURN AIR, AND THE OTHER IS
MOUNTED IN OUTDOOR AIR. USE C7400A WITH
THE W7212A, W7213 AND W7214 MODULES AND
C7400C WITH THE W7212C MODULES.
EXHAUST
FAN
USE EITHER MIXED AIR SENSOR OR DISCHARGE
AIR SENSOR, NOT BOTH.
RETURN AIR
EXHAUST AIR
M19547E
Representative locations of connected economizer system devices
91
Honeywell Economizers 63-8594-01
Section 9 - W7212, W7213 and W7214 Economizer Modules
63-8594-01 Honeywell Economizers
92
Section 10 - W7340 and W7345 Economizer Module
Section 10 - W7340 and W7345
Economizer Module
93
Honeywell Economizers 63-8594-01
Section 10 - W7340 and W7345 Economizer Module
W7340 Economizer System Components
DAMPER
EXHAUST
AIR
RETURN AIR
FROM ROOM
RETURN AIR
SENSOR
OUTSIDE
AIR SENSOR
SUPPLY
AIR TO
BUILDING
MIXED AIR
SENSOR
COILS
FAN
W7220 ECONOMIZER
CONTROLLER
WITH DEMAND
CONTROL
VENTILATION
C7632 ROOM
CARBON DIOXIDE
SENSOR
M13836A
63-8594-01 Honeywell Economizers
94
Section 10 - W7340 and W7345 Economizer Module
10K NTC
DISCHARGE
AIR SENSOR
MODBUS
C7232
2
DIRECT
EXPANSION
CO L
MIXED AIR
SENSOR
10K
NTC
C7400
2
INDOOR
FAN
NDOOR
A R CO2
SENSOR
1
3
ENTHALPY
SENSOR
DISCHARGE
AR
OUTDOOR
AIR
M7215 MOTOR
WITH W7340
ECONOMIZER
LOGIC MODULE
1
C7400
1
3
FOR D FFERENTIAL ENTHALPY, THE TWO C7400 ENTHALPY SENSORS
ARE CONNECTED TO THE ECONOMIZER MODULE—ONE IS MOUNTED
IN THE RETURN AIR DUCT, AND THE OTHER IS MOUNTED IN THE
OUTDOOR AIR DUCT. D FFERENTIAL ENTHALPY CONTROL PROV DES
GREATER ENERGY SAV NGS THAN SINGLE ENTHALPY CONTROL.
ENTHALPY
SENSOR
EXHAUST
FAN
2
USE EITHER MIXED AIR SENSOR OR DISCHARGE AIR SENSOR, NOT BOTH.
3
A C7600 HUMIDITY SENSOR, USED IN CONJUNCTION WITH A 10K NTC
TEMPERATURE SENSOR CAN BE USED INSTEAD OF A C7400 ENTHALPY SENSOR.
FOR DRY BULB CONTROL, USE ONLY A 10K NTC TEMPERATURE SENSOR.
EXHAUST AIR
RETURN A R
M22814
Representative Locations of Connected W7340 Economizer System Devices
10K NTC
DISCHARGE
AIR SENSOR
1
MODBUS
DIRECT
EXPANSION
COIL
10K
NTC
NDOOR
FAN
DISCHARGE
AR
MIXED AIR
SENSOR
1
1
OUTDOOR
AIR
M7215 MOTOR
WITH W7345
ECONOMIZER
LOGIC MODULE
EXHAUST
FAN
EXHAUST A R
1
USE EITHER MIXED A R SENSOR OR DISCHARGE AIR SENSOR, NOT BOTH.
RETURN AIR
M22822
Representative Locations of Connected W7345 Economizer System Devices
95
Honeywell Economizers 63-8594-01
Section 10 - W7340 and W7345 Economizer Module
W7340 and W7345 Components
The W7340 is a full enthalpy economizer used
in a Trane unit to provide a totally integrated
control system.
The W7345 provides temperature (OAT)
control only; it does not have an option for a
RAT, DCV sensor or exhaust control.
The W7340, when wired as shown below
responds to a signal from a modified Modbus
command. This system uses C7400 Solid
State Enthalpy Changeover Sensor(s). The
C7400 Enthalpy Sensors respond to both dry
bulb temperature and humidity, allowing use of
outdoor air at higher temperatures for free
cooling when humidity is low.
The logic module functions as a first stage of
cooling and provides maximum energy
savings during the cooling cycle. The logic
module automatically locks out free cooling
during heating and holds the outdoor air
damper at the DCV minimum setting.
Table 1 details the input/output (I/O) logic of
the W7340. The logic module energizes the
Unit Control and Indoor Fan contacts, and
operates according to Table 1.
Table 1. W7340 Economizer I/O Logic.
Inputs
DCV
Below set
Above set
Enthalpya
Outdoor
Return
High
Low
Low
High
High
Low
Low
High
Outputs
Y1
On
On
On
On
On
On
On
On
b
Y2
On
Off
On
Off
On
Off
On
Off
a
b
Compressor
Stage 1
Stage 2
On
On
On
Off
On
Off
Off
Off
On
On
On
Off
On
Off
Off
Off
Damper
Minimum position
Modulatingc
Modulatingd
Modulatinge
For single enthalpy control, the module compares outdoor enthalpy to the ABCDE setpoint.
If both stages of cooling are off, the system is off and the damper is:
— At DCV minimum position if DCV is below setpoint.
— Modulating if DCV is above setpoint.
c Modulation based on mixed air sensor signal, modulating between DCV minimum position and 100% open.
d Modulation based on DCV signal, limited by minimum position.
e Modulation based on the greater of the DCV and mixed air sensor signals.
b
63-8594-01 Honeywell Economizers
96
Section 10 - W7340 and W7345 Economizer Module
W7340 only
Demand Control Ventilation
(DCV) Sensor Input (W7340
only)
To measure enthalpy, the logic module
accepts signals from either:
• C7600C Humidity and 10K NTC
temperature sensors.
• or a C7400 Enthalpy Sensor.
• OR from the Trane controller via modified
Modbus communications link.
When using C7400 Enthalpy Sensors;
connect the enthalpy sensors to the humidity
sensor terminals; leave the temperature
sensor terminals empty.
• Use C7400A sensor with W7340A or
W7340B.
• Use a C7400C sensor with W7340C.
The local method (changing configuration from
Modbus) of configuring the Economizer for
enthalpy or humidity sensors is:
• Short out the external minimum damper
position terminals during the first three
seconds after boot-up will cause the LED to
go solid on within 5 seconds.
• Maintain the short for another 5 seconds will
cause LED to flash quick pulses, indicating
the type of configuration.
• 2 pulses between off periods indicates the
Economizer is configured for Humidity
sensors. 3 pulses means it is configured for
Enthalpy sensors.
The configuration can be toggled between
Humidity and Enthalpy by releasing the short
for approximately 5 seconds, until the LED
goes solid again, and then reapplying the
short for another 5 seconds.
The toggling is indicated by the new LED flash
sequence. This can be performed as many
times as desired, and the most recent
configuration will be saved when the short is
removed for over 10 seconds.
97
The DCV sensor can be any sensor that
provides a 2-10 Vdc output over a range of
500 to 1500 ppm of CO2. The DCV signal
modulates the outdoor damper to provide
ventilation based on occupancy.
The W7340A and B modules do not have the
ability to set the outdoor air damper to a
maximum position for DCV, they incorporate a
minimum position setting that defaults to 20%
but can be overridden using the on-board pot
or the modified Modbus communication link to
a maximum of 50% open.
The maximum position sets the damper
position to a position that the damper goes to if
the CO2 sensor fails. If the minimum position
set point is higher than the DCV maximum
position, on sensor failure, the damper goes to
the higher of the two of DCV maximum and
minimum position setting.
There is no limit on the damper position on a
call from the CO2 sensor (DCV). It can go
100% open.
The W7340C DCV economizer logic module
has the ability to set DCV minimum damper
and minimum position. The DCV minimum
position is set to ventilate the building
contaminants and the minimum position is set
to ventilate for the building contaminants and
the building occupants. The installer sets the
damper DCV minimum position and the
minimum position based on the design
occupancy and cfm of outdoor air
requirements for the space. The damper will
modulate open between the DCV minimum
damper position and the minimum position
based on input from a CO2 sensor. The
damper will not drive 100% open on a call for
ventilation, but can drive 100% open on a call
for cooling. If the CO2 sensor fails the damper
Honeywell Economizers 63-8594-01
Section 10 - W7340 and W7345 Economizer Module
will drive to the minimum position ventilating
for building contaminants and the building
occupants.
The W7340C does not have a separate
potentiometer to select the new DCV minimum
damper position. The following procedure
allows the installer to set the new DCV
minimum position.
IMPORTANT
Steps 3-8 must be completed within 3
minutes after power up otherwise the
configuration process will be terminated, no changes will be saved and
you will need to repeat steps 1-13.
DAMPER POSITION
100% OPEN
DCV Minimum and Minimum
Position Damper Set Up
Set up instructions for W7340C DCV damper
positions:
DCV MIN
POSITION
CODE VENTILATION RATE
MIN POS
1. Remove RAT sensor from RAT terminals.
2. Connect CO2 sensor to DCV terminals.
3. Apply power to economizer logic module.
4. Wait 10 to 15 seconds for the CO2 sensor
to initialize. Short RAT terminals.
5. Remove CO2 sensor from DCV terminals.
6. DCV LED will blink 2 times. If LED does
not blink, cut power to economizer logic
and repeat steps 1-5.
800 PPM
2000 PPM
CO2 LEVEL
NORMAL OPERATION WITHOUT DCV
CO2 SENSOR ONLY
DCV ECONOMIZER FULL OCCUPANCY
DCV ECONOMIZER
M23972A
W7340 Demand Control Ventilation
Unlike the W7215 and W7212, which have
minimum position for the Building
contaminants and DCV maximum for the total
ventilation required by design, the W7340C
has different labels for the same functions.
DCV minimum is the same as the W7212
minimum position and the minimum position
for W7340C is the DCV maximum on the
W7212.
7. Set DCV minimum position using MIN
POS/DCV MIN potentiometer.
8. Remove RAT short.
9. DCV minimum position is saved to
memory and DCV LED blinks 5 times.
10. Turn off power to economizer logic
module.
11. Connect RAT sensor.
It is VERY IMPORTANT to know the difference
between the various suppliers equipment as
what they are referring to in their control
language. If the W7340 or W7345 unit is not
black in color then the economizer controller is
not made by Honeywell and the operation of
the unit may not follow the description in this
manual. Contact the OEM of the equipment for
operation.
12. Turn power on to economizer logic
module.
13. Set minimum position using MIN POS/
DCV MIN
63-8594-01 Honeywell Economizers
0% OPEN
450 PPM
98
Section 10 - W7340 and W7345 Economizer Module
Settings and Adjustment
M N POS/DCV
M N DAMPER
POSITION
W7345
ExF
2-10 VDC
DAMPER
POSITION 2-10 VDC
DAMPER
POSITION
OVERRIDE
MAT
Potentiometers located on the face of the
W7345, provide adjustments for Minimum
Damper Position parameters (see below).
+
OAH
OPEN
OAT
STATUS LED
MIN POS/
DCV MIN
RAT
DEMAND
CONTROL
VENTILATION
SETPO NT
C
B
RAH
D
A
E
+
DCV
MINIMUM
DAMPER
POSITION
500
P
-
MAT
ENTHALPY
CHANGEOVER
SETPOINT
DRY BULB
CHANGEOVER
SETPOINT
P1
DCV
SETPOINT
1500
MBUSMBUS
TR1 2 V COM
TR 2 V AC
M23878
OPEN
STATUS LED
OAT
MIN POS/
DVC MAX
RAT
Location of W7340
potentiometers and LED
C
B
D
A
E
If the mixed air temperature drops to 45°F
(7°C), the mixed air sensor overrides the DCV
sensor and closes the damper to DCV
minimum position to protect the hot or chilled
water coils from freezing. When the mixed air
temperature rises to 48°F (9°C), control
reverts to normal operation.
MBUSP
P1
MBUS
TR1 2 V COM
TR 2 V AC
M23877
Location of W7345
potentiometers and LED
W7340
Exhaust Setpoint (W7340 only)
Using the DCV potentiometer, the setpoint can
be adjusted until three minutes after powering
the device. Through the Modbus, the DCV
setpoint can be modified at any time. If the
DCV potentiometer is changed after the three
minute power-up time, no change to the DCV
setpoint will occur unless power is removed
from the device then reapplied.
The exhaust setpoint determines when the
exhaust fan will run based on the damper
position, this function is the same as the
exhaust setpoint on the W7215 and W7212
except, as shipped from the factory, the
W7340 uses an exhaust setpoint of 25%.
When the damper position is greater than 25%
open (from fully closed), the logic module calls
for exhaust. When the damper position is
below 22% open, the exhaust relay is deenergized.
The W7340C has an E curve in addition to the
A, B, C and D curves. See the chart below
showing location of E curve on Psychrometric
chart.
99
Honeywell Economizers 63-8594-01
Section 10 - W7340 and W7345 Economizer Module
46
85
90
95 100 105 110
(29) (32) (35) (38) (41) (43)
44
CONTROL CONTROL POINT
APPROX. °F (°C)
CURVE
AT 50% RH
42
80
(27)
TY
UM
RE
LA
TIV
EH
32
PE
R
U
30
70
(21)
A
40
20
60
(16)
50
22
60
70
80
10
0
90
HA
65
(18)
24
EN
T
26
28
LP
Y—
BT
IDI
36
75
(24)
PO
UN
34 D D
RY
AI
38
R
(%
)
40
73 (23)
70 (21)
67 (19)
63 (17)
55 (13)
A
B
C
D
E
16
14
50
(10)
12
45
(7)
40
(4)
30
18
55
(13) B
C
20
D
E
10
35
(2)
E
35
(2)
40
(4)
45
(7)
50
(10)
B A
D C
55
60
65
75
80
85
90
95 100 105 110
70
(13) (16) (18) (21) (24) (27) (29) (32) (35) (38) (41) (43)
APPROXIMATE DRY BULB TEMPERATURE
1
1
°F (°C)
HIGH LIMIT CURVE FOR W7210D, W7212, W7213, W7214, W7340C.
M23879B
W7340 Performance Characteristics for Enthalpy Changeover Settings
63-8594-01 Honeywell Economizers
100
Section 10 - W7340 and W7345 Economizer Module
Wiring for W7340 and W7345
MOD BUS –
MOD BUS +
2-10 Vdc
FEEDBACK
OUTPUT
2-10 Vdc
CONTROL
SIGNAL INPUT
M7215
24 VAC
TR1 TR
W7340
MOD
BUS
POWER
EXHAUST
CONTACTOR
–
C7600C
OUTDOOR
AR
HUMIDITY
3
MIXED
A R TEMP
SENSOR
10K NTC
TR
TR1
3
P
DCV
3
RAH
MAT
EXF
+
+
DCV
SETPOINT
E
OAH
A
RAT
M N POS/
DCV MIN
–
1
L2
P1
+
–
2-10 Vdc
CONTROL
SIGNAL
OUTPUT
C
D
B
OAT
+
–
2-10 Vdc
FEEDBACK
INPUT
L1
24 VAC
+
–
+
RETURN
AIR TEMP
SENSOR
10K NTC
–
DCV
SENSOR
(0-10 Vdc)
S963B
2
R
OUTDOOR
AIR TEMP
SENSOR
10K NTC
C7600C
RETURN
AIR
HUM DITY
3
CCW
OPEN
CW
CLOSE
B
W
1 PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2 OPTIONAL REMOTE MINIMUM POSITION POTENTIOMETER.
3 WHEN USING C7400 ENTHALPY SENSORS, CONNECT THE ENTHALPY SENSOR TO THE
HUM DITY SENSOR TERMINALS. LEAVE THE TEMPERATURE SENSOR TERMINALS EMPTY.
M23875
W7340 Typical Wiring
MOD BUS –
MOD BUS +
24 VAC
TR1 TR
M7215
W7345
MOD
BUS
L1
24 VAC
1
L2
P1
TR
+
TR1
–
D
A
E
MAT
B
P
C
MINIMUM
POSITION
S963B
2
R
MIXED
AIR TEMP
SENSOR
10K NTC
CCW
OPEN
CW
CLOSE
B
W
1 PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQU RED.
2 OPTIONAL REMOTE MINIMUM POSITION POTENTIOMETER.
M23876
W7345 Typical Wiring.
101
Honeywell Economizers 63-8594-01
Section 10 - W7340 and W7345 Economizer Module
63-8594-01 Honeywell Economizers
102
Section 11 - W7220 JADE™ Economizer Module
Section 11 - W7220 JADE™ Economizer
Module
103
Honeywell Economizers 63-8594-01
Section 11 - W7220 JADE™ Economizer Module
W7220 Economizer System Components
DAMPER
EXHAUST
AIR
RETURN AIR
FROM ROOM
RETURN AIR
SENSOR
OUTSIDE
AIR SENSOR
SUPPLY
AIR TO
BUILDING
MIXED AIR
SENSOR
COILS
FAN
W7220 ECONOMIZER
CONTROLLER
WITH DEMAND
CONTROL
VENTILATION
C7632 ROOM
CARBON DIOXIDE
SENSOR
M13836A
63-8594-01 Honeywell Economizers
104
Section 11 - W7220 JADE™ Economizer Module
DIRECT
EXPANSION
COIL
C7400S
MIXED AIR
SENSOR
INDOOR
FAN
DISCHARGE
AIR
1
C7250
ENTHALPY
SENSOR
M7215
MOTOR
W7220
ECONOMIZER
CONTROLLER
OUTDOOR
AIR
C7400S
1
ENTHALPY
SENSOR
EXHAUST
FAN
1 FOR DIFFERENTIAL ENTHALPY, THE TWO C7400S ENTHALPY SENSORS
ARE CONNECTED TO THE ECONOMIZER MODULE ONE IS MOUNTED
IN THE RETURN AIR DUCT, AND THE OTHER IS MOUNTED IN THE
OUTDOOR AIR DUCT. DIFFERENTIAL ENTHALPY CONTROL PROVIDES
GREATER ENERGY SAVINGS THAN SINGLE ENTHALPY CONTROL.
EXHAUST AIR
RETURN AIR
C7232
INDOOR
AIR CO2
SENSOR
M22814B
Representative Locations of Connected W7220 Economizer System Devices
105
Honeywell Economizers 63-8594-01
Section 11 - W7220 JADE™ Economizer Module
W7220 Components
The W7220 is a full function economizer used
to provide a totally integrated control
system.The JADE™ Economizer System is an
expandable economizer control system, which
includes a W7220 Economizer Module
(controller) with an LCD and keypad. The
W7220 can be configured with optional
sensors.The W7220 Economizer Module can
be used as a standalone economizer module
wired directly to a commercial set back space
thermostat and sensors to provide outdoor air
dry-bulb economizer control.
The W7220 Economizer Module can be
connected to optional Sylk Bus sensors for
single or differential enthalpy control. The
W7220 Economizer Module provides power
and communications on the Sylk Bus for the
Sylk Bus sensors.
The W7220 Economizer Module automatically
detects sensors by polling the Sylk Bus to
determine which sensors are present. If a
sensor loses communications after it has been
detected, the W7220 Economizer indicates a
device fail error on its LCD.
System Components
The JADE™ Economizer System includes an
Economizer Module, 20k mixed air sensor,
damper actuator, an optional CO2 sensor, and
either a 20k outdoor air temperature sensor or
Sylk Bus sensors for measuring Outdoor Air
and return air enthalpy, temperature, and
humidity.
Economizer Module
This is the core of the JADE™ Economizer
System and includes the user interface for the
system. The W7220 Economizer Module
provides the basic inputs and outputs to
provide simple economizer control. When
used with the optional Sylk Bus sensors, the
Economizer Module provides more advanced
economizer functionality.
63-8594-01 Honeywell Economizers
106
Sylk Bus Sensors (optional)
The Sylk Bus Sensor is a combination
temperature and humidity sensor which is
powered by and communicates on the Sylk
Bus to the JADE™ economizer. Up to three
sensors may be configured with the JADE™
Economizer Module.
CO2 Sensor (optional)
A CO2 sensor (non-communicating or nonSylk Bus) can be added for Demand Control
Ventilation (DCV).
JADE™ will be in the “set up” mode
for the first 60 minutes after
powered. If a sensor for OA air or
Sylkbus device (sensor, actuator) is
disconnected during the set up
mode, the JADE™ will not alarm that
failure. The MA sensor is a system
“critical” sensor, if the MA sensor is
removed during the set up mode, the
JADE™ will alarm. After 60 minutes
the JADE™ controller will change to
operation mode and all components
removed or failed will alarm in the
operation mode.
Sensor Location and Mounting
The JADE™ Economizer W7220 uses digital
sensors for control. The C7250 temperature
sensors (MAa and OAb) are 20k NTC. A MA
sensor is required for all applications and is
mounted in the mixed air section of a rooftop
unit either directly to the sheet metal using self
tapping sheet metal screws or in the air stream
using the duct mounting kit. Duct mount kit is
part number 50053060-001. Optional OA, RAc
and DAd Sylkbus sensors communicate
withthe W7220 on the two-wire
communication bus and can either be wired
using a two pin header or using a side
connector.
Section 11 - W7220 JADE™ Economizer Module
Each Sylkbus sensor includes a two pin side
connector with the packaging. The SKU
number of the Sylkbus sensor is C7400S. All
OA, RA and DA sensors are the same SKU
number. The sensor is set for the appropriate
type of sensing using the three position DIP
switch located on the sensor. OA position is
OFF, OFF, OFF; RA is ON, OFF, OFF and DA
is OFF, ON, OFF. During installation the
sensors are set for the usage desired.
NOTE: The four terminal blocks are
removable. You can slide out each
terminal block, wire it, and then
slide it back into place.
AUX2 I
JADE CONTROLLER
OCC
E GND
EXH1
AUX1 O
AU 2 I
A X1 O
Y2 I
NOTE: The protective film on the dip
switch is only necessary during the
factory assembly process. Simply
push through the film to set the dip
switches; this will not harm the
device.
Once installed, a sensor can be changed to a
different application by simply changing the
DIP switch setting.
a
MA = Mixed Air
Y2 O
Y1 I
Y1 O
C
R
LEFT TERMINAL
BLOCK LABEL
RIGHT TERMINAL
BLOCK LABEL
M32283B
Fig. 1. W7220 Economizer module terminal
connection labels.
Table 1. Economizer Module - Left hand
terminal blocks.
b
OA = Outdoor Air
c
RA = Return Air
Label
d
DA = Discharge Air
MAT
MAT
WIRING
OAT
OAT
Module wiring in the field is terminated to the
four screw terminal blocks located on the left
and right sides of the unit. Module wiring at the
OEM factory is terminated via the header pin
terminals located on the left and right sides.
The header terminal pins and the terminal
blocks have common terminations for the
appropriate input or output.
Use Fig. 1 and Tables 1 and 2 to locate the
wiring terminals for the economizer module.
107
S-BUS
S-BUS
IAQ 2-10
Type
Description
Top Left Terminal Block
20k NTC Mixed Air Temperature Sensor
and
(polarity insensitive connection)
COM
20k NTC Outdoor Air Temperature Sensor
and
(polarity insensitive connection)
COM
SYLK
Sylk Bus sensor (polarity
Bus
insensitive connection)
Bottom Left Terminal Block
2-10 Vdc
Air Quality Sensor Input (e.g. CO2
IAQ
COM
IAQ 24V
COM
sensor)
Air Quality Sensor Common
24 Vac
Air Quality Sensor 24 Vac Source
ACT 2-10
2-10 Vdc
ACT
COM
ACT 24V
COM
Damper Actuator Output (2-10
Vdc)
Damper Actuator Output Common
24 Vac
Damper Actuator 24 Vac Source
NA
The last terminal is not used
Honeywell Economizers 63-8594-01
Section 11 - W7220 JADE™ Economizer Module
CO2 Sensor Wiring
Table 2. Economizer Module - Right hand
terminal blocks.
Label
Type
Description
Top Right Terminal Block
n/a
The first terminal is not used
AUX2 I
24 Vac IN
Shut Down (SD) or Heat (W)
Conventional only or Heat Pump
Change
over (O/B) in Heat Pump mode.
OCC
24 Vac IN
Occupied / Unoccupied Input
E-GND
EGND
Earth Ground - System Required
EXH1
24 Vac
OUT
24 Vac
OUT
Exhaust Fan 1 Output
AUX1 O
Programmable: Exhaust fan 2
output or ERV or System Alarm
output.
When using the C7232 Honeywell CO2
sensors the black and brown common wires
are internally connected and only one is
connected to “IAQ COM” on the JADE™. Use
the power from the JADE™ to power the CO2
sensor OR make sure the ground for the
power supplies are common. See wiring
diagram below for the C7232 and C7632
wiring diagrams.
C7632
L1
(HOT)
L2
1
Bottom Right Terminal Block
Y2-I
24 Vac IN
C
24 Vac
OUT
COM
Y2 in - Cooling Stage 2 Input
from space thermostat
Y2 out - Cooling Stage 2 Output
to stage 2 mechanical cooling
Y1 in - Cooling Stage 1 Input
from space thermostat
Y1 out - Cooling Stage 1 Output
to stage 1 mechanical cooling
24 Vac Common
Y2-O
24 Vac
OUT
24 Vac IN
R
24 Vac
24 Vac Power (Hot)
Y1-I
Y1-O
0-10 VDC
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
M34095
Fig. 2. Wiring for C7232
C7632
L1
(HOT)
L2
1
Actuator Wiring Options:
1. The JADE™ economizer controller can
only have one (1) communicating actuator
connected to it.
2. Up to four (4) non-communicating and
two (2) 2-position actuators (1 each on
EXH1 and AUX1 O)
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
M34095
3. One (1) communicating and up to four (4)
non-communicating and two (2) 2position actuators (1 each on EXH1 and
AUX1 O). When using a 2-position
actuator on the AUX1 O, the AUX1 O
must be programmed for Exh2 and the %
open is the % open of the outdoor damper
when the 2-pos actuator opens. Connect
24 V to Exh1 and/or AUX1 O and ground
to the JADE™ “C” terminal.
63-8594-01 Honeywell Economizers
0-10 VDC
108
Fig. 3. Wiring for C7632
Section 11 - W7220 JADE™ Economizer Module
Wiring Application Examples
Stand-alone Economizer
This section describes the wiring
configurations for the JADE™ Economizer
system. The configurations are:
The most basic configuration is the standalone Economizer (see Fig. 4 and Fig. 6). A
stand-alone Economizer is directly wired to
sensors, actuators, thermostat, and
mechanical controls in the roof top unit. It does
not require Sylk Bus communications.
—“Stand-alone Economizer”
—“Economizer with Sylk Bus Sensors” on
page 116
ROOF TOP UNIT
MA TEMP
SENSOR
20K NTC
W7220 ECONOMIZER CONTROLLER MODULE
OCC
MA
MA
OAT
OAT
1 OA TEMP
SENSOR
20K NTC
CO2
SENSOR
2-10 VDC
(OPTIONAL)
G
W1
Y1
O/B
Y2
W2
3
1K1
AUX2-I
OCC
E-GND
AUX1-0
Y2I
IAQ (2-10V)
IAQ COM
IAQ 24V
Y2O
Y1I
ACT (2-10V)
ACT COM
ACT 24V
Y1O
C R
TR
1K1
TR1
R(+)
24 VAC
M7215
IN
+
IN
-
C(-)
2
1
NOTE THAT THE C7250 20K NTC SENSOR CAN BE MOUNTED IN THE OAT ONLY IN THIS CONFIGURATION.
2
WHEN USING A HEAT PUMP THERMOSTAT, THERMOSTAT TERMINALS MAY DIFFER: W1 MAY BE LABELED O
OR B AND W2 MAY BE LABELED W.
3
WHEN USING A HEAT PUMP WITH DEFROST FEEDBACK, ADD AN ISOLATION RELAY BETWEEN O AND C.
THERMOSTAT
M28980C
Fig. 4. Stand-alone dry bulb Economizer configuration with black motor M7215.
109
Honeywell Economizers 63-8594-01
Section 11 - W7220 JADE™ Economizer Module
EXH1 OR AUX1 O
1
C
2
V
ACTUATOR
NOTE: ON/OFF ACTUATORS CAN BE USED ON THE EXH1 OR AUX1
O TERMINAL WITH GROUND TO THE C TERMINAL. WHEN
PROGRAMMING THE EXH1 OR AUX1 O, THE % IS THE PERCENT
OPEN POSITION OF THE OUTDOOR AIR DAMPER WHEN THE
EXH1 OR AUX1 O TERMINAL IS ENERGIZED AND THE 2-POS
DAMPER GOES OPEN. IF USING THE AUX1 O TERMINAL
PROGRAM AUX1 O FOR EXH2.
M33409
Fig. 5. 2-position actuator.
ROOF TOP UNIT
MA TEMP
SENSOR
20K NTC
W7220 ECONOMIZER CONTROLLER MODULE
Y1
O/B
OCC
1
CO2
SENSOR
2-10 VDC
(OPTIONAL)
W2
3
1K1
MA
MA
OA
OA
OA TEMP
SENSOR
20K NTC
G
W1
Y2
AUX2-I
OCC
E-GND
AUX1-0
Y2I
IAQ (2-10V)
IAQ COM
IAQ 24V
ACT (2-10V)
ACT COM
ACT 24V
Y2O
Y1I
Y1O
C R
1K1
R(+)
24 VAC
C(-)
MS7503 OR MS7505
2
3
1
NOTE THAT THE 20K NTC SENSOR CAN BE MOUNTED IN THE OA TERMINALS ONLY IN THIS CONFIGURATION.
2
WHEN USING A HEAT PUMP THERMOSTAT, THERMOSTAT TERMINALS MAY DIFFER: W1 MAY BE LABELED O
OR B AND W2 MAY BE LABELED W.
3
WHEN USING A HEAT PUMP WITH DEFROST FEEDBACK, ADD AN ISOLATION RELAY BETWEEN O AND C.
THERMOSTAT
M32564C
Fig. 6. Stand-alone dry-bulb Economizer configuration with Honeywell
MS7503 or MS7505 Direct Coupled Actuator.
63-8594-01 Honeywell Economizers
110
Section 11 - W7220 JADE™ Economizer Module
ROOF TOP UNIT
MA TEMP
SENSOR
20K NTC
W7220 ECONOMIZER CONTROLLER MODULE
Y1
O/B
OCC
1
W2
3
1K1
AUX2-I
OCC
E-GND
MAT
MAT
OAT
OAT
OAT TEMP
SENSOR
20K NTC
G
W1
Y2
AUX1-0
CO2
SENSOR
2-10 VDC
(OPTIONAL)
Y2I
IAQ (2-10V)
IAQ COM
IAQ 24V
ACT (2-10V)
ACT COM
ACT 24V
Y2O
Y1I
Y1O
C R
1K1
1
R(+)
2
24 VAC
MS3103J
3 S-BUS
OR MS3105J
C(-)
4 S-BUS
2
5
1
NOTE THAT THE 20K NTC SENSOR CAN BE MOUNTED IN THE OAT TERMINALS ONLY IN THIS CONFIGURATION.
2
WHEN USING A HEAT PUMP THERMOSTAT, THERMOSTAT TERMINALS MAY DIFFER: W1 MAY BE LABELED O
OR B AND W2 MAY BE LABELED W.
3
WHEN USING A HEAT PUMP WITH DEFROST FEEDBACK, ADD AN ISOLATION RELAY BETWEEN O AND C.
THERMOSTAT
M32650D
Fig. 7. Stand-alone dry-bulb Economizer configuration with Honeywell MS3103J or
MS3105J communicating actuators.
Economizer with Sylk Bus Sensors
A standalone economizer with Sylk Bus
sensors has additional sensors attached using
Sylk Bus communications (see Fig. 8, Fig. 9
111
and Fig. 10). The Sylk Bus reduces wiring
requirements while providing additional
functionality.
Honeywell Economizers 63-8594-01
Section 11 - W7220 JADE™ Economizer Module
2
ROOF TOP UNIT
MA TEMP
SENSOR
20K NTC
W7220 ECONOMIZER CONTROLLER MODULE
O/B
Y1
OCC
MA
MA
AUX2-I
OCC
E-GND
G
W1
Y2
W2
4
1K1
S-BUS
AUX1-0
S-BUS
CO2
SENSOR
2-10 VDC
(OPTIONAL)
Y2I
IAQ (2-10V)
IAQ COM
IAQ 24V
Y2O
Y1I
ACT (2-10V)
ACT COM
ACT 24V
Y1O
1K1
C R
TR
R(+)
24 VAC
TR1
M7215
IN
+
IN
-
C(-)
3
OUTSIDE AIR
TEMP/HUMIDITY (ENTHALPY)
SYLKBUS SENSOR
1
RETURN AIR
TEMP/HUMIDITY (ENTHALPY)
SYLKBUS SENSOR
THERMOSTAT
1
IN THIS CONFIGURATION, AN OPTIONAL DISCHARGE AIR TEMP/HUMIDITY
(ENTHALPY) SYLKBUS SENSOR CAN BE ADDED FOR ADVANCED CONTROL
AS SHOWN IN THE LOWER LEFT OF THIS FIGURE.
2
DO NOT USE THE C7250 20K NTC SENSOR WITH THE OA TERMINAL IN THIS
CONFIGURATION.
3
WHEN USING A HEAT PUMP THERMOSTAT OR A PROGRAMMABLE THERMOSTAT,
THERMOSTAT TERMINALS MAY DIFFER: W1 MAY BE LABELED O OR B AND W2
MAY BE LABELED W.
4
WHEN USING A HEAT PUMP WITH DEFROST FEEDBACK, ADD AN ISOLATION
RELAY BETWEEN O AND C.
M32565C
Fig. 8. Economizer with Sylk Bus sensors for enthalpy configuration with Honeywell
M7215 black motor.
63-8594-01 Honeywell Economizers
112
Section 11 - W7220 JADE™ Economizer Module
2
MA TEMP
SENSOR
20K NTC
ROOF TOP UNIT
W7220 ECONOMIZER CONTROLLER MODULE
O/B
Y1
OCC
MA
MA
AUX2-I
OCC
E-GND
S-BUS
S-BUS
CO2
SENSOR
2-10 VDC
(OPTIONAL)
G
W1
Y2
W2
4
1K1
AUX1-0
Y2I
IAQ (2-10V)
IAQ COM
IAQ 24V
ACT (2-10V)
ACT COM
ACT 24V
Y2O
Y1I
Y1O
1K1
C R
R(+)
24 VAC
C(-)
MS7503 OR MS7505
3
3
OUTSIDE AIR
TEMP/HUMIDITY (ENTHALPY)
SYLKBUS SENSOR
1
RETURN AIR
TEMP/HUMIDITY (ENTHALPY)
SYLKBUS SENSOR
THERMOSTAT
1
IN THIS CONFIGURATION, AN OPTIONAL DISCHARGE AIR TEMP/HUMIDITY
(ENTHALPY) SYLKBUS SENSOR CAN BE ADDED FOR ADVANCED CONTROL AS
SHOWN IN THE LOWER LEFT OF THIS FIGURE.
2
DO NOT USE THE C7250 20K NTC SENSOR WITH THE OA TERMINAL IN THIS
CONFIGURATION.
3
WHEN USING A HEAT PUMP THERMOSTAT, THERMOSTAT TERMINALS MAY DIFFER:
W1 MAY BE LABELED O OR B AND W2 MAY BE LABELED W.
4
WHEN USING A HEAT PUMP WITH DEFROST FEEDBACK, ADD AN ISOLATION
RELAY BETWEEN O AND C.
M32566C
Fig. 9. Economizer with Sylk Bus sensors for enthalpy configuration with a Honeywell
MS7503 or MS7505 Direct Coupled Actuator.
113
Honeywell Economizers 63-8594-01
Section 11 - W7220 JADE™ Economizer Module
ROOF TOP UNIT
MA TEMP
SENSOR
20K NTC
W7220 ECONOMIZER CONTROLLER MODULE
O/B
Y1
OCC
MAT
MAT
AUX2-I
OCC
E-GND
S-BUS
S-BUS
CO2
SENSOR
2-10 VDC
(OPTIONAL)
4
1K1
Y2I
Y2O
Y1I
Y1O
1K1
C R
R(+)
24 VAC
1
3 S-BUS
W2
AUX1-0
IAQ (2-10V)
IAQ COM
IAQ 24V
ACT (2-10V)
ACT COM
ACT 24V
2
G
W1
Y2
C(-)
2
MS3103J
OR MS3105J
3
4 S-BUS
5
THERMOSTAT
C7400S
OUTSIDE AIR
TEMP/HUMIDITY (ENTHALPY)
SYLKBUS SENSOR
1
C7400S
RETURN AIR
TEMP/HUMIDITY (ENTHALPY)
SYLKBUS SENSOR
1
IN THIS CONFIGURATION, AN OPTIONAL DISCHARGE AIR TEM/HUMIDITY
(ENTHALPY) SYLKBUS SENSOR CAN BE ADDED FOR ADVANCED
CONTROL AS SHOWN IN THE LOWER LEFT OF THIS FIGURE.
2
THE S-BUS COMPONENTS MAY BE DAISY CHAINED TO ANOTHER S-BUS
COMPONENT.
3
WHEN USING A HEAT PUMP THERMOSTAT, THERMOSTAT TERMINALS
MAY DIFFER: W1 MAY BE LABELED O OR B AND W2 MAY BE LABELED W.
4
WHEN USING A HEAT PUMP WITH DEFROST FEEDBACK, ADD AN
ISOLATION RELAY BETWEEN O AND C.
M32653D
Fig. 10. Economizer with Sylk Bus sensors for enthalpy configuration with a Honeywell
MS3103J or MS3105J communicating actuators.
User Interface
The user interface consists of an LCD display
and a 4-button keypad on the front of the
Economizer module. The LCD is a 16
character by 2 line dot matrix display.
2 LINE
LCD
Keypad
The four navigation buttons illustrated in
Fig. 11 are used to scroll through the menus
and menu items, select menu items, and to
change parameter and configuration settings.
MENU UP
(EXIT)
BUTTON
SCROLL
(UP/DOWN)
BUTTONS
SELECT (ENTER)
BUTTON
M32274A
Fig. 11. Economizer LCD and Keypad
Layout.
63-8594-01 Honeywell Economizers
114
Section 11 - W7220 JADE™ Economizer Module
Using the Keypad with Menus
The Menus in display order are:
To use the keypad when working with menus:
• Press the button to move to the
previous menu.
• Press the button to move to the next
menu.
• Press the ↵ button (Enter) to display the
first item in the currently displayed menu.
• Press the
button (Menu up) to exit a
menu’s item and return to the list of menus.
Menu Structure
Table 3 on page 121 illustrates the complete
hierarchy of menus and parameters for the
JADE™ Economizer system.
115
•
•
•
•
•
•
STATUS
SETPOINTS
SYSTEM SETUP
ADVANCED SETUP
CHECKOUT
ALARMS
Your menu parameters will be different
depending on your configuration. For
example, if you do not have a DCV (CO2)
sensor, then none of the DCV parameters
appear and only MIN POS will display. If you
have a CO2 sensor, the DCV MIN and DCV
MAX will appear AND if you have 2 speed fan
DCV MIN (high and low speed) and DCV MAX
(high and low speed will appear).
Honeywell Economizers 63-8594-01
Section 11 - W7220 JADE™ Economizer Module
Table 3. Menu Structure
Parameter
Range and
Increments
Menu
Parameter
Parameter
Default
Value
STATUS
ECON AVAIL
NO
YES/NO
YES = economizing available; the system can use
Outdoor Air for free cooling when required.
ECONOMIZING
NO
YES/NO
YES = Outdoor Air being used for 1st stage
cooling.
OCCUPIED
NO
YES/NO
YES = OCC signal received from space
thermostat or unitary controller. YES = 24 Vac on
terminal OCC No = 0 Vac on terminal OCC.
HEAT PUMP
n/ac
COOL
HEAT
Displays COOL or HEAT when system is set to
heat pump (nonconventional)
COOL Y1-IN
OFF
ON/OFF
Y1-I signal from space thermostat or unitary
controller for cooling stage 1. ON = 24 Vac on
term Y1-I OFF = 0 Vac on term Y1-I
COOL Y1-OUT
OFF
ON/OFF
Cool Stage 1 Relay Output to mechanical cooling
(Y1-OUT terminal).
COOL Y2-IN
OFF
ON/OFF
Y2-I signal from space thermostat or unitary
controller for second stage cooling. ON = 24 Vac
on term Y2-I OFF = 0 Vac on term Y2-I
COOL Y2-OUT
OFF
ON/OFF
Cool Stage 2 Relay Output to mechanical cooling
(Y2-OUT terminal).
MA TEMP
_ _._ ºF
-40 to 150 ºF
Displays value of measured mixed air from MAT
sensor. Displays --.- if not connected, short, or
out-of-range. Always 3F above MA LO Setpoint.
DA TEMP
_ _._ ºF
-40 to 150 ºF
Displays when Discharge Air Sylk Bus sensor is
connected and displays measured discharge air
temperature. Displays --.-°F if sensor sends
invalid value, if not connected, short or out-ofrange.
OA TEMP
_ _._ ºF
-40 to 140 ºF
Displays measured value of outdoor air
temperature. Displays --°F if sensor sends invalid
value, if not connected, short or out-of-range.
OA HUM
__%
0 to 100%
Displays measured value of outdoor humidity from
OA Sylkbus sensor. Displays --% if not
connected, short, or out- of-range.
RA TEMP
_ _._ ºF
0 to 140 ºF
Displays measured value of return air temperature
from RAT sensor. Displays --°F if sensor sends
invalid value, if not connected, short or out-ofrange.
RA HUM
__%
0 to 100%
Displays measured value of return air humidity
from RA Sylkbus sensor. Displays --% if sensor
sends invalid value, if not connected, short or outof-range.
63-8594-01 Honeywell Economizers
Notes
116
Section 11 - W7220 JADE™ Economizer Module
Table 3. Menu Structure
Parameter
Default
Value
Parameter
Range and
increments
Notes
Menu
Parameter
STATUS
IN CO2
___
ppm
0 to 2000
(3500) ppm
Displays value of measured CO2 from CO2
sensor. Invalid if not connected, short or out-ofrange. May be adjusted in Advanced menu by
Zero offset and Span
DCV STATUS
n/a
ON/OFF
Displays ON if above setpoint and OFF if below
setpoint, and ONLY if a CO2 sensor is connected.
DAMPER OUT
2.0V
2.0 to 10.0 V
Displays output position to the damper actuator.
ACT POS
n/a
0 to 100%
Displays actual position of actuator.
ACT COUNT
n/a
1 to 65,535
Displays number of times actuator has cycled. 1
Cycle equals the sum of 180° of movement in any
direction.
ACTUATOR
n/a
OK/Alarm
(on Alarm
menu)
Displays Error if voltage or torque is below
actuator range
EXH1 OUT
OFF
ON/OFF
Output of EXH1 terminal. ON = 24 Vac Output;
OFF = No Output.
EXH2 OUT
OFF
ON/OFF
Output of AUX1 O terminal Displays ON when
damper position reaches programmed percentage
setpoint ON = 24 Vac Output, OFF = No Output;
displays only if AUX1 O = EXH2
ERV
OFF
ON/OFF
Output of AUX1 O terminal, ON = 24 Vac Output,
OFF = No Output; displays only if AUX1 O = ERV
MECH COOL ON
0
0, 1, or 2
Displays stage of mechanical cooling that is
active.
FAN SPEED
n/a
LOW or
HIGH
Displays speed of fan on a 2-speed fan unit
W (HEAT IN)
n/a
ON/OFF
Displays status of heat on a 2-speed fan unit.
MAT SET
53ºF
38 to 70 ºF;
increment by
1
Setpoint determines where the economizer will
modulate the OA damper to maintain the mixed
air temperature.
LOW T LOCK
32ºF
-45 to 80 ºF;
increment by
1
Setpoint determines outdoor temperature when
the mechanical cooling cannot be turned on.
Commonly referred to as the Compressor lockout.
DRYBLB SET
63ºF
48 to 80 ºF;
increment by
1
Setpoint determines where the economizer will
assume outdoor air temperature is good for free
cooling; e.g.; at 63 ºF unit will economizer at 62 ºF
and below and not economize at 64 ºF and above.
There is a a 2 ºF deadband.
SETPOINTS
117
Honeywell Economizers 63-8594-01
Section 11 - W7220 JADE™ Economizer Module
Table 3. Menu Structure (cont’d.)
Parameter
Range and
increments
Menu
Parameter
Parameter
Default
Value
SETPOINTS
ENTH CURVE
ES3
ES1, ES2,
ES3, ES4, or
ES5
Enthalpy boundary “curves” for economizing
using single enthalpy. See “” on page 19 and
Product Data sheet form 63-2700 for description
of enthalpy curves.
DCV SET
1100pp
m
500 to 2000
ppm
increment by
100
Displays ONLY if a CO2 sensor is connected.
Setpoint for Demand Control Ventilation of space.
Above the setpoint, the OA dampers will modulate
open to bring in additional OA to maintain a space
ppm level below the setpoint.
MIN POS
2.8 V
2 to 10 Vdc
Displays ONLY if a CO2 sensor is NOT
connected. With 2-speed fan units MIN POS L
(low speed fan) and MIN POS H (high speed fan)
settings are required. Default for MIN POS L is
3.2V and MIN POS H is 2.8V
VENTMAX
2.8 V
2 to 10 Vdc
or 100 to
9990 cfm
increment by
10
Displays only if a CO2 sensor is connected. Used
for Vbz (ventilation max cfm) setpoint. Displays 2
to 10 V if <3 sensors (RA,OA and MA). In AUTO
mode dampers controlled by CFM With 2-speed
fan units VENTMAX L (low speed fan) and
VENTMAX H (high speed fan) settings are
required. Default for VENTMAX L is 3.2V and
VENTMAX H is 2.8V
VENTMIN
2.25 V
2 to 10 Vdc
or 100 to
9990 cfm
increment by
10
Displays only if CO2 sensor is connected. Used
for Va (ventilation min cfm) setpoint. Displays 2 to
10 V if <3 sensors (RA,OA and MA). Va is only set
if DCV is used. This is the ventilation for less than
maximum occupancy of the space. In AUTO
mode dampers controlled by CFM With 2-speed
fan units VENTMIN L (low speed fan) and
VENTMIN H (high speed fan) settings are
required. Default for VENTMIN L is 2.5V and
VENTMIN H is 2.25V
ERV OAT SP
32ºF
0 to 50 ºF;
increment by
1
Only when AUX1 O = ERV
EXH1 SET
50%
0 to 100%;
increment by
1
Setpoint for OA damper position when exhaust
fan 1 is powered by the economizer. With 2-speed
fan units Exh1 L (low speed fan) and Exh1 H (high
speed fan) settings are required. Default for Exh1
L is 65% and Exh1 H is 50%
63-8594-01 Honeywell Economizers
Notes
118
Section 11 - W7220 JADE™ Economizer Module
Table 3. Menu Structure (cont’d.)
Parameter
Range and
Increments
0 to 100%;
increment by
1
Menu
Parameter
Parameter
Default
Value
SETPOINTS
EXH2 SET
75%
SYSTEM
SETUP
INSTALL
01/01/
11
UNITS DEG
ºF
ºF or ºC
Sets economizer controller in degrees Fahrenheit
or Celsius.
EQUIPMENT
CONV
CONV HP
CONV = conventional. HP O/B = Enables Heat
Pump mode. Use AUX2 I for Heat Pump input
from thermostat or controller.
AUX2 I
n/a
Shutdown
(SD) Heat
(W1) HP(O)
HP(B)
In CONV mode: SD = Enables configuration of
shutdown (default); W = Informs controller that
system is in heating mode. NOTE: If using 2speed fan mode, you must program CONV
mode for W. Shutdown is not available in the
two-speed fan mode. In HP O/B mode: HP(O) =
energize heat pump on Cool (default); HP(B) =
energize heat pump on Heat.
FAN SPEED
1 speed
1 speed/ 2
speed
Sets economizer controller for operation of 1
speed or 2 speed supply fan NOTE: 2-speed fan
option also needs Heat (W1) programmed in
AUX 2 In.
FAN CFM
5000cf
m
100 to
15000 cfm;
increment by
100
This is the capacity of the RTU. The value is found
on the label from the RTU manufacturer.
AUX1 OUT
NONE
NONE ERV
EXH2 SYS
• NONE = not configured (output is not used) •
ERV= Energy Recovery Ventilatord • EXH2 =
second damper position relay closure for second
exhaust fan. • SYS = use output as an alarm
signal
OCC
INPUT
INPUT or
ALWAYS
When using a setback thermostat with occupancy
out (24 Vac), the 24 Vac is input “INPUT” to the
OCC terminal. If no occupancy output from the
thermostat then change program to “ALWAYS”
OR ad a jumper from terminal R to OCC terminal.
FACTORY DEFAULT
NO
NO or YES
Resets all set points to factory defaults when set
to YES. LCD will briefly flash YES and change to
NO but all parameters will change to factory
default values.
Notes
Setpoint for OA damper position when exhaust
fan 2 is powered by the economizer. Only used
when AUX1 O is set to EHX2. With 2-speed fan
units Exh2 L (low speed fan) and Exh2 H (high
speed fan) settings are required. Default for Exh2
L is 80% and Exh2 H is 75%
Display order = MM/DD/YY Setting order = DD,
MM, then YY.
119
Honeywell Economizers 63-8594-01
Section 11 - W7220 JADE™ Economizer Module
Table 3. Menu Structure (cont’d.)
Menu
ADVANCED
SETUP
Parameter
Range and
Increments
Parameter
MA LO SET
Parameter
Default
Value
45ºF
FREEZE POS
CLO
CLO MIN
CO2 ZERO
0ppm
CO2 SPAN
2000pp
m
STG3 DLY
2.0h
0 to 500
ppm;
increment by
10
1000 to
3000 ppm;
increment by
50
0 min, 5 min,
15 min, then
15 min
intervals. Up
to 4h or OFF
SD DMPR POS
CLO
CLO OPN
DCVCAL ENA
MAN
MAN
(manual)
AUTO
MAT T CAL
0.0 F°
+/-2.5F°
OA T CAL
0.0F°
+/-2.5F°
OA H CAL
0% RH
+/-10% RH
RA T CAL
0.0F°
+/-2.5F°
RA H CAL
0% RH
+/-10% RH
DA T CAL
0.0 F°
+/-2.5F°
2SP FAN DELAY
5
Minutes
0 to 20
minutes in 1
minute
increments
63-8594-01 Honeywell Economizers
35 to 55 ºF;
increment by
1º
120
Notes
Temp to activate Freeze Protection (close
damper and alarm if temp falls below setup
value). Always needs to be at least 3F below
MA Setpoint.
Damper position when freeze protection is
active (closed or MIN POS).
CO2 ppm level to match CO2 sensor start
level.
CO2 ppm span to match CO2 sensor.
Delay after stage 2 for cool has been active.
Turns on 2nd stage of mechanical cooling
when economizer is 1st stage and mechanical
cooling is 2nd stage. Allows three stages of
cooling, 1 economizer and 2 mechanical. OFF
= no Stage 3 cooling.
Indicates shutdown signal from space
thermostat or unitary controller. When
controller receives 24 Vac input on the SD
terminal in conventional mode, the OA damper
will open if programmed for OPN and OA
damper will close if programmed for CLO. All
other controls, e.g., fans, etc. will shut off.
Turns on the DCV automatic control of the
dampers. Resets ventilation based on the RA,
OA and MA sensor conditions. Requires all
sensors (RA, OA, MA and CO2). This
operation is not operable with a 2-speed fan
unit.
Allows for the operator to adjust for an out of
calibration temperature sensor
Allows for the operator to adjust for an out of
calibration temperature sensor
Allows for the operator to adjust for an out of
calibration humidity sensor
Allows for the operator to adjust for an out of
calibration temperature sensor
Allows for the operator to adjust for an out of
calibration humidity sensor
Allows for the operator to adjust for an out of
calibration temperature sensor
When in economizing mode this is the delay for
the high speed fan to try to satisfy the call for
second stage cooling before the first stage
mechanical cooling is enabled.
Section 11 - W7220 JADE™ Economizer Module
Table 3. Menu Structure (cont’d.)
Parameter
Range and
Increments
Menu
Parameter
Parameter
Default
Value
CHECKOUT
DAMPER VMIN-HS
n/a
n/a
Positions damper to VMIN position.
DAMPER VMAX-HS
(LS)
n/a
n/a
Positions damper to VMAX position. With 2speed fan units the damper will position to
VMAX low speed fan.
DAMPER OPEN
n/a
n/a
Positions damper to the full open position.
Exhaust fan contacts enable during the
DAMPER OPEN test. Make sure you pause in
this mode to allow for exhaust contacts to
energize due to the delay in the system.
DAMPER CLOSE
n/a
n/a
Positions damper to the fully closed position.
CONNECT Y1-O
n/a
n/a
Closes the Y1-O relay (Y1-O). See CAUTION on
page 24
CONNECT Y2-O
n/a
n/a
Closes the Y2-O relay (Y2-O). See CAUTION on
page 24
CONNECT AUX1-O
n/a
n/a
Energizes the AUX1-O output. If AUX1-O setting
is: • NONE – no action taken • ERV – 24 Vac out.
Turns on or signals an ERV that the conditions
are not good for economizing but are good for
ERV operation.g • SYS – 24 Vac out. Issues a
system alarm.
CONNECT EXH1
n/a
n/a
Closes the power exhaust fan 1 relay (EXH1)
MA T SENS ERR
n/a
n/a
CO2 SENS ERR
n/a
n/a
OA T SENS ERR
n/a
n/a
Alarms display only when they are active. The
menu title “ALARMS (_)” includes the number of
active alarms in parenthesis ().
DA ENTHL ERR
n/a
n/a
SYS ALARM
n/a
n/a
When AUX1-O is set to SYS and there is any
alarm (e.g., failed sensors, etc.), the AUX1-O
terminal has 24 Vac out.
ACT UNDER V
n/a
n/a
Voltage received by Actuator is above expected
range
ACT OVER V
n/a
n/a
Voltage received by Actuator is below expected
range
ACT STALLED
n/a
n/a
Actuator stopped before achieving commanded
position
ALARMS
Notes
NOTE: The alarms listed are examples. Additional alarms display depending on the
parameter settings and configuration.
121
Honeywell Economizers 63-8594-01
Section 11 - W7220 JADE™ Economizer Module
Time-out and Screensaver
When no buttons have been pressed for 10 minutes, the LCD displays a screen saver which
cycles through the Status items. Each Status item displays in turn and cycles to the next item
after 5 seconds.
Sequence of Operation
Table 4. Dry Bulb Operation No DCV (CO2 sensor) - 1 Speed Fan.
DCV
None
None
a
OA Good to
economize?
No
Yes
Y1-I
Off
On
Y2-I
Off
Off
FAN SPD
High
High
Y1-O
0-v/Off
24-v/On
Y2-O
0-v/Off
0-v/Off
Occupied
MIN POS
MIN POS
Unoccupied
Closed
Closed
On
On
High
24-v/On
24-v/On
MIN POS
Closed
Off
Off
High
0-v/Off
0-v/Off
MIN POS
Closed
On
Off
High
0-v/Off
0-v/Off
Closed to Full-Open
On
On
High
24-v/On
0-v/Offa
MIN POS to
Full-Open
MIN POS to
Full-Open
Closed to Full-Open
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on 2nd stage of mechanical cooling Y2 –O after
the delay if the call for Y1-I and Y2-I have not been satisfied.
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122
Section 11 - W7220 JADE™ Economizer Module
Table 5. Dry Bulb Operation With DCV (CO2 sensor) - 1 Speed Fan.
DCV
Below
CO2 set
OA Good to
economize?
No
Yes
Above
CO2 set
No
Yes
a
Y1-I
Off
Y2-I
Off
FAN SPD
High
Y1-O
0-v/Off
Y2-O
0-v/Off
Occupied
VENTMIN
Unoccupied
Closed
On
Off
High
24-v/On
0-v/Off
VENTMIN
Closed
On
On
High
24-v/On
24-v/On
VENTMIN
Closed
Off
Off
High
0-v/Off
0-v/Off
VENTMIN
Closed
On
Off
High
0-v/Off
0-v/Off
Closed to Full-Open
On
On
High
24-v/On
0-v/Offa
Off
Off
High
0-v/Off
0-v/Off
On
Off
High
24-v/On
0-v/Off
On
On
High
24-v/On
24-v/On
Off
Off
High
0-v/Off
0-v/Off
On
Off
High
0-v/Off
0-v/Off
On
On
High
24-v/On
0-v/Offa
VENTMIN to
Full-Open
VENTMIN to
Full-Open
VENTMIN to
VENTMAX
VENTMIN to
VENTMAX
VENTMIN to
VENTMAX
VENTMIN to
VENTMAX
VENTMIN to
Full-Open
VENTMIN to
Full-Open
Closed to Full-Open
Closed
Closed
Closed
Closed
Closed to Full-Open
Closed to Full-Open
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on 2nd stage of mechanical cooling Y2 –O after
the delay if the call for Y1-I and Y2-I have not been satisfied.
Table 6. Enthalpy Operation No DCV (CO2 sensor) - 1 Speed Fan.
DCV
None
None
a
OA Good to
economize?
No
Yes
Y1-I
Off
Y2-I
Off
FAN SPD
High
Y1-O
0-v/Off
Y2-O
0-v/Off
Occupied
MIN POS
Unoccupied
Closed
On
Off
High
24-v/On
0-v/Off
MIN POS
Closed
On
On
High
24-v/On
24-v/On
MIN POS
Closed
Off
Off
High
0-v/Off
0-v/Off
MIN POS
Closed
On
Off
High
0-v/Off
0-v/Off
Closed to Full-Open
On
On
High
24-v/On
0-v/Offa
MIN POS to
Full-Open
MIN POS to
Full-Open
Closed to Full-Open
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on 2nd stage of mechanical cooling Y2 –O after
the delay if the call for Y1-I and Y2-I have not been satisfied.
123
Honeywell Economizers 63-8594-01
Section 11 - W7220 JADE™ Economizer Module
Table 7. Enthalpy Operation With DCV (CO2 sensor) - 1 Speed Fan.
DCV
Below
set
OA Good to
economize?
No
Yes
Above
set
No
Yes
Y1-I
Off
Y2-I
Off
FAN SPD
High
Y1-O
0-v/Off
Y2-O
0-v/Off
Occupied
VENTMIN
Unoccupied
Closed
On
Off
High
24-v/On
0-v/Off
VENTMIN
Closed
On
On
High
24-v/On
24-v/On
VENTMIN
Closed
Off
Off
High
0-v/Off
0-v/Off
VENTMIN
Closed
On
Off
High
0-v/Off
0-v/Off
Closed to Full-Open
On
On
High
24-v/On
0-v/Offa
Off
Off
High
0-v/Off
0-v/Off
On
Off
High
24-v/On
0-v/Off
On
On
High
24-v/On
24-v/On
Off
Off
High
0-v/Off
0-v/Off
On
Off
High
0-v/Off
0-v/Off
On
On
High
DELAYb
24-v/On
0-v/Offa
VENTMIN to FullOpen
VENTMIN to FullOpen
VENTMIN to
VENTMAX
VENTMIN L to
VENTMAX
VENTMIN H to
VENTMAX
VENTMIN L to
VENTMAX
VENTMIN to FullOpen
VENTMIN to FullOpen
Closed to Full-Open
Closed
Closed
Closed
Closed
Closed to Full-Open
Closed to Full-Open
a
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on 2nd stage of mechanical cooling Y2 –O after
the delay if the call for Y1-I and Y2-I have not been satisfied.
b
With 2SP FAN DELAY (Advanced Setup Menu) when in the economizing mode there is a delay for the high speed
fan to try to satisfy the call for second stage cooling by turning on the fan to high and opening the OA damper
100% before the first stage mechanical cooling is enabled.
Table 8. Dry Bulb Operation No DCV (CO2 sensor) - 2 Speed Fan.
DCV
None
None
OA Good to
economize?
No
Yes
Y1-I
Off
On
Y2-I
Off
Off
FAN SPD
High
High
Y1-O
0-v/Off
24-v/On
Y2-O
0-v/Off
0-v/Off
Occupied
MIN POS L
MIN POS L
Unoccupied
Closed
Closed
On
On
High
24-v/On
24-v/On
MIN POS H
Closed
Off
Off
High
0-v/Off
0-v/Off
MIN POS L
Closed
On
Off
High
0-v/Off
0-v/Off
Closed to Full-Open
On
On
High
DELAYb
24-v/On
0-v/Offa
MIN POS L to
Full-Open
MIN POS H to
Full-Open
a
Closed to Full-Open
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on 2nd stage of mechanical cooling Y2 –O after
the delay if the call for Y1-I and Y2-I have not been satisfied.
b
With 2SP FAN DELAY (Advanced Setup Menu) when in the economizing mode there is a delay for the high speed
fan to try to satisfy the call for second stage cooling by turning on the fan to high and opening the OA damper
100% before the first stage mechanical cooling is enabled.
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Section 11 - W7220 JADE™ Economizer Module
Table 9. Dry Bulb Operation With DCV (CO2 sensor) - 2 Speed Fan.
DCV
Below
set
OA Good to
economize?
No
Yes
Above
set
No
Yes
Y1-I
Off
Y2-I
Off
FAN SPD
High
Y1-O
0-v/Off
Y2-O
0-v/Off
Occupied
VENTMIN L
Unoccupied
Closed
On
Off
High
24-v/On
0-v/Off
VENTMIN L
Closed
On
On
High
24-v/On
24-v/On
VENTMIN H
Closed
Off
Off
High
0-v/Off
0-v/Off
VENTMIN L
Closed
On
Off
High
0-v/Off
0-v/Off
Closed to Full-Open
On
On
High
24-v/On
0-v/Offa
Off
Off
High
0-v/Off
0-v/Off
On
Off
High
24-v/On
0-v/Off
On
On
High
24-v/On
24-v/On
Off
Off
High
0-v/Off
0-v/Off
On
Off
High
0-v/Off
0-v/Off
On
On
High
DELAYb
24-v/On
0-v/Offa
VENTMIN L to
Full-Open
VENTMIN H to
Full-Open
VENTMIN L to
VENTMAX
VENTMIN L to
VENTMAX
VENTMIN H to
VENTMAX
VENTMIN L to
VENTMAX
VENTMIN L to
Full-Open
VENTMIN H to
Full-Open
Closed to Full-Open
Closed
Closed
Closed
Closed
Closed to Full-Open
Closed to Full-Open
a
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on 2nd stage of mechanical cooling Y2 –O after
the delay if the call for Y1-I and Y2-I have not been satisfied.
b
With 2SP FAN DELAY (Advanced Setup Menu) when in the economizing mode there is a delay for the high speed
fan to try to satisfy the call for second stage cooling by turning on the fan to high and opening the OA damper
100% before the first stage mechanical cooling is enabled.
Table 10. Enthalpy Operation No DCV (CO2 sensor) - 2 Speed Fan.
DCV
NO CO2
SENSOR
OA Good to
economize?
No
Yes
Y1-I
Off
Y2-I
Off
FAN SPD
High
On
Off
High
On
On
High
Off
Off
High
On
Off
High
On
On
High
Y1-O
0-v/Off
Y2-O
0-v/Off
Occupied
MIN POS L
Unoccupied
Closed
24-v/On
0-v/Off
MIN POS L
Closed
24-v/On
24-v/On
MIN POS H
Closed
0-v/Off
0-v/Off
MIN POS L
Closed
0-v/Off
0-v/Off
Closed to Full-Open
DELAYb
24-v/On
0-v/Offa
MIN POS L to
Full-Open
MIN POS H to
Full-Open
Closed to Full-Open
a With
stage 3 delay (STG3 DLY) in Advanced setup menu can turn on 2nd stage of mechanical cooling Y2 –O after
the delay if the call for Y1-I and Y2-I have not been satisfied.
b With 2SP FAN DELAY (Advanced Setup Menu) when in the economizing mode there is a delay for the high speed
fan to try to satisfy the call for second stage cooling by turning on the fan to high and opening the OA damper
100% before the first stage mechanical cooling is enabled.
125
Honeywell Economizers 63-8594-01
Section 11 - W7220 JADE™ Economizer Module
Table 11. Enthalpy Operation With DCV (CO2 sensor) - 2 Speed Fan.
DCV
Below set
OA Good to
economize?
No
Yes
Above
set
No
Yes
Y1-I
Off
Y2-I
Off
FAN SPD
High
Y1-O
0-v/Off
Y2-O
0-v/Off
Occupied
VENTMIN L
Unoccupied
Closed
On
Off
High
24-v/On
0-v/Off
VENTMIN L
Closed
On
On
High
24-v/On
24-v/On
VENTMIN H
Closed
Off
Off
High
0-v/Off
0-v/Off
VENTMIN L
Closed
On
Off
High
0-v/Off
0-v/Off
Closed to Full-Open
On
On
High
24-v/On
0-v/Offa
Off
Off
High
0-v/Off
0-v/Off
On
Off
High
24-v/On
0-v/Off
On
On
High
24-v/On
24-v/On
Off
Off
High
0-v/Off
0-v/Off
On
Off
High
0-v/Off
0-v/Off
On
On
High
DELAYb
24-v/On
0-v/Offa
VENTMIN L to
Full-Open
VENTMIN H to
Full-Open
VENTMIN L to
VENTMAX
VENTMIN L to
VENTMAX
VENTMIN H to
VENTMAX
VENTMIN L to
VENTMAX
VENTMIN L to
Full-Open
VENTMIN H to
Full-Open
Closed to Full-Open
Closed
Closed
Closed
Closed
Closed to Full-Open
Closed to Full-Open
a
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on 2nd stage of mechanical cooling Y2 –O after
the delay if the call for Y1-I and Y2-I have not been satisfied.
b
With 2SP FAN DELAY (Advanced Setup Menu) when in the economizing mode there is a delay for the high speed
fan to try to satisfy the call for second stage cooling by turning on the fan to high and opening the OA damper
100% before the first stage mechanical cooling is enabled.
JADE™ Enthalpy Changeover Boundaries
The W7220 JADE™ economizer has new single enthalpy setpoints, it does not use the A,B,C,D
and E enthalpy curves. Figure 13 and table 12 show the new boundary curves. There are 5
boundaries (setpoints ES1 through ES5), which are defined by dry bulb temperature, enthalpy
and dew point.
63-8594-01 Honeywell Economizers
126
Section 11 - W7220 JADE™ Economizer Module
ECONOMIXING
DUAL ENTHALPY
HIGH LIMIT
AVAILABLE
NOT AVAILABLE
SINGLE ENTHALPY
)
RH
(%
P2 (T,RH)
P1
(T,RH)
RA TEMP
RA
M
HU
ABSOLUTE HUM D TY
EN
TH
AL
PY
ES5
ES4
ES3
ES2
TEMPERATURE
ES1
HL
M32286A
Fig. 12. Single Enthalpy curve and boundaries.
Table 12. Single Enthalpy and Dual Enthalpy High Limit Curves.
Point P1
Humidity %RH
36.8
39.6
Point P2
Humidity %RH
80.1
80.0
Enthalpy
Curve
ES1
ES2
Temp. DryBulb (°F)
80.0
75.0
Temp. Dew
point (°F)
60.0
57.0
Enthalpy
(btu/lb/da)
28.0
26.0
Temp. °F
80.0
75.0
ES3
70.0
54.0
24.0
70.0
42.3
59.7
81.4
ES4
65.0
51.0
22.0
65.0
44.8
55.7
84.2
ES5
60.0
48.0
20.0
60.0
46.9
51.3
88.5
HL
86.0
66.0
32.4
86.0
38.9
72.4
80.3
Temp. °F
66.3
63.3
Two-Speed Fan Operation
The later versions of the W7220 JADE™
controller have the capability to work with a
system using a 2-speed supply fan operated
by a 2-speed motor. The W7220 does not
control the supply directly but uses the
following input status to determine the speed
of the supply fan and controls the OA damper
to the required position.
The W (heating mode) is not controlled by the
W7220 but it requires the status to know
where to position the OA for minimum position
for the fan speed.
127
The 2 speed fan delay is available when the
system is programmed for 2 speed fan (in the
System Setup menu item). The 2 speed fan
delay is defaulted to 5 minutes and can be
changed in the Advanced Setup menu item.
When the unit has a call for Y1 In and in the
free cooling mode and there is a call for Y2 In,
the 2-speed fan delay starts and the OA
damper will modulate 100% open, the supply
fan should be set to high speed by the unit
controller. After the delay one of two actions
will happen:
Honeywell Economizers 63-8594-01
Section 11 - W7220 JADE™ Economizer Module
• The Y2 In call will be satisfied with the
damper 100% open and fan on high speed
and the call will turn off
OR
• If the call for additional cooling in the space
has not been satisfied then the first stage of
mechanical damper cooling will be enabled
through Y1 Out or Y2 Out.
Power Up Delay
Alarms
The Economizer module provides alarm
messages that display on the 2-line LCD.
NOTE: Upon power up, the module waits 60
minutes before checking for alarms.
This allows time for all the configured
devices (e.g. sensors, actuator) to
become operational. The exception is
the MA sensor which will alarm
immediately.
Upon power up (or after a power outage or
brownout), the W7220 controller module
begins a 5 minute power up delay before
enabling mechanical cooling.
Initial Menu Display
On initial start up, Honeywell displays on the
first line and Economizer W7220 on the
second line. After a brief pause, the revision of
the software appears on the first line and the
second line will be blank.
If one or more alarms are present and there
has been no keypad activity for at least 5
minutes, the Alarms menu displays and cycles
through the active alarms. You can also
navigate to the Alarms menu at any time.
Clearing Alarms
Power Loss (Outage or Brownout)
Once the alarm has been identified and the
cause has been removed (e.g. replaced faulty
sensor), the alarm can be cleared from the
display.
All setpoints and advanced settings are
restored after any power loss or interruption.
63-8594-01 Honeywell Economizers
NOTE: If power goes below 18 Vac, the
W7220 controller module assumes a
power loss and the 5 minute power-up
delay will become functional when
power returns above 18 Vac.
128
Section 11 - W7220 JADE™ Economizer Module
W7220 (JADE™) Economizer Controller Used with
Honeywell Prestige© IAQ 2.0 Thermostat
The JADE™ controller is a digital unit with
economizing, demand control ventilation, and
auto calibration strategies used to provide
energy savings and comfort for the occupants
of small commercial buildings.
The options of connecting a visual or audio
alarm to the SYS output when an alarm occurs
would normally not be used in an occupied
space; these types of alarm systems would be
in a warehouse or computer lab.
JADE™ automatically recognizes the
following components that are wired to it:
Using the W7220-PCMOD tool to monitor the
occupancy, damper position and status of the
sensors in the system allows the building
operator to keep a constant or periodic audit
record of the economizer system. The
PCMOD tool is connected to the JADE™
controller via two non-polarity wires and to a
personal computer via USB cable to log the
selected data.
•
•
•
•
Outdoor enthalpy or dry bulb
CO2 for demand control ventilation
Mixed air for supply air comfort control
Actuators to control the dampers
After the first 60 minutes of power on, JADE™
will change from a “setup” mode to an
“operation” mode and will control the
ventilation and “free cooling” to the building.
Alarm Mode for Failed
Components on the JADE™
economizer system
A Prestige© IAQ 2.0 thermostat can be used in
the system alone or in conjunction with the
W7220- PCMOD tool, to alert building
occupants when there is an alarm in the
economizer system.
You will need the following components:
If a sensor or actuator fails to respond to
JADE™ during the operation mode, the
JADE™ controller has the ability to send a 24
Vac signal, communicating that there is an
alarm in the system. This is accomplished by
programming the AUX1 O (out) terminal to
“SYS” in the System Setup Menu on the
JADE™ controller.
The building operator is able to address the
alarm in three ways:
• Connect a light or audio alarm to the AUX1 O
out to turn on a visual or audible alarm in the
space, where a building operator will notice
there is an alarm on the system
• Connect JADE™ to a W7220-PCMOD tool in
the mechanical room, using the two-wire
communication terminals (s-bus) and a
personal computer to monitor the system
• Use a Prestige© IAQ 2.0 thermostat to alarm
the occupants that there is a system alarm
129
• W7220A1000 JADE™ Economizer (plus
sensors and actuator(s)
• R8222N1011 DPDT Relay
• THX9421R5013 Prestige© IAQ 2.0 2-wire
Thermostat
• THM5421R1013 Equipment Interface
Module
• Prestige© IAQ 2.0 Thermostat and
Equipment Interface Module can be
purchased in a kit YTHX9421R5051
To program the Prestige© IAQ 2.0 thermostat
for JADE™ controller alarms:
1. Power thermostat > press Menu > press
Installer options > input password > press
Create Setup > select options through set
up step 6000.
NOTE: The password is the date code located
on the back of the thermostat. The
date code can also be found in Menu
> Equipment Status.
Honeywell Economizers 63-8594-01
Section 11 - W7220 JADE™ Economizer Module
2. At installer setup 6000 (Select the Dry Contacts in the System) > “Custom Alert”.
3. At Installer Setup 6170, select the terminals wired to the dry contact device (S1 or S2).
Connect a Normally Open Relay Contact to the S1 or S2 terminals.
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Section 11 - W7220 JADE™ Economizer Module
4. At Installer Setup 6180 (Custom Alert Dry Contact Setup) select “Normally Open.”
5. At Installer Setup 6190 (Customer Alert Name) > press to edit > type up to 40 characters.
For example, “Economizer Alarm” (this will display on the thermostat home screen in an
orange box when there is an alarm on the JADE™ controller).
131
Honeywell Economizers 63-8594-01
Section 11 - W7220 JADE™ Economizer Module
6. At Installer Setup 6200 (Customer Alert Message) > press to edit > type up to 140
characters. For example, “Call for Service 1-800-555-1212.”
7. If the occupants clear the alert, the building operator can recover the last 25 alarms in the
Alerts Log. The Alerts Log is located in the Menu > Installer Options > Data Logs > Alerts
Log.
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132
Section 11 - W7220 JADE™ Economizer Module
133
Honeywell Economizers 63-8594-01
Section 11 - W7220 JADE™ Economizer Module
W7220 Personal Computer Tool
The W7220 JADE™ economizer controller is
the first Honeywell standalone economizer
that has a microprocessor and therefore
makes it easy for the user to interact with the
controller and provide information and new
functions. However to make the controller a
low cost for all users, the ability to record the
history of the system was not included in the
unit. A separate tool is available that allows
the user to connect the W7220 JADE™
economizer to a personal computer to:
• reduce setup and test time by making it
easy to program the controller using
selectable program parameters for the unit
• record checkout of the economizer system
• provide the ability to monitor ventilation,
economizer operation and other parameters
for local building codes
To use the W7220 PC Module, you’ll need:
a personal computer with the Windows XP
Windows 7 or Windows Vista operating
system; a USB cable to connect the PC
Module to the computer; and two wires to
connect the PC Module to the JADE™
controller module.
The PC-MOD tool is powered through the
Sylk-bus connection to the JADE™ controller.
The complete OS number for the PC MOD
tool is W7220-PCMOD and software to run it
can be downloaded for free at:
www.customer.honeywell.com/
economizertools.
There are two versions of the software, one for
the OEM factory and one for the contractors.
OEMs can use the PC-MOD tool to load
default programs for different customers to the
JADE™ logic module without having the
production workers push buttons and possibly
misprogram the logic. They simply download
the correct program from a file created by the
production engineer. After the unit has been
programmed, the operator is able to step
through a checkout procedure to verify the unit
is working and print a report to ship to the
customer. The file can be saved for later use.
Each JADE™ logic module has a serial
number which can be traced back to the
factory to verify that it was working when it left
the factory and to track the programmed
parameters.
To connect the PC Module to the JADE™
controller, use a six-pin edge connector that
inserts onto the edge of the PC MOD board
from the side. Tie into Sylk –bus terminals on
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the JADE™ controller module system, and
then connect the PC Module (W7220 - PC
MOD) to the computer using the USB cable.
134
The contractor version of the software can be
used in the field to communicate to the JADE’s
on the RTU without opening the unit by
connecting 2 wires to the JADE™ via the
S-bus and pulling the wires to a mechanical
room where the 6-pin connector can be
terminated to the wires. The service technician
simply plugs the 6-pin connector into the PC
tool, connects it to the computer and reads the
status of the JADE™ in the RTU. The
contractors may want to have one PC MOD
tool per building, per RTU or per technician.
Extra 6-pin connectors are available in 20 per
bag and can be ordered using the OS number
50048926-002.
Section 11 - W7220 JADE™ Economizer Module
Downloading the software:
2. Connect W7220-PCMOD interface
module to your computer using the USB
cable provided.
1. Download PC MOD tool software from
www.customer.honeywell.com/
economizertools to your personal
computer.
NOTE: OEM and Field tools are the same
hardware but use different programs
and are used for different purposes.
The password for the Field software is:
password. For the OEM password call
your Honeywell OEM representative.
a. During initial software installation
make sure to check the box to create a
desktop shortcut and check on "Install/
Remove TUSB Drivers" on the
installation screen.
b. If you are repeating installation of the
software or not sure if the TUSB
drivers are on the computer you are
using, follow the steps in 4 below.
c. If you do not want to run the application
immediately, unselect the "Run
JADE™ Configuration tool" before
clicking on FINISH.
d. After successfully downloading the
software to your computer you will
need to restart your computer. Close
all programs and restart your
computer.
e. For additional instructions contact your
local distributor or the Honeywell
hotline at 888-516-9347.
135
3. Connect W7220-PCMOD tool to your
S-Bus device using 2 non-polarity 18-22
gauge wires and power the Sylk device.
Start configuration tool. If you get a
message stating PC-tool cannot get
firmware revision, then follow the steps in
4 below. The wires can be up to 100 feet
without protection and up to 200 feet
using twisted pair wire.
4. To verify the correct port on your
computer:
• Press the Windows key and the Pause
key at the same time on your keyboard.
• Click Device Manager that appears on
the left side of the screen (if using
Windows XP the System properties
window will appear; click on hardware,
then device manager).
• Click Ports from Device window pop up.
• Note the Com port assigned to
TUSB3410. Close the Device Manager
screen.
5. Go to configuration tool and choose the
matching comport to TUSB3410 from the
Settings menu.
For Specific instructions refer to the Honeywell
E-learning module at:
www.customer.honeywell.com
Honeywell Economizers 63-8594-01
Section 11 - W7220 JADE™ Economizer Module
Running the Software
After installing PCMOD software to your desktop, double click on the JADE™ Trade
configuration tool icon to open it. This is the first page you’ll see. A small sub-screen will display
basic information, including note on COM port settings.
Click on “OK.”
The configuration screen will appear with the system settings.
Before you proceed, check your COM Port.
Go into Settings in the header on the page and choose the port for your TUSB3410 COM Port,
using the drop down menu.
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Section 11 - W7220 JADE™ Economizer Module
If you are not sure the com port on your computer you can check the com port by pressing the
Window key and the Pause key at the same time on your keyboard.
With a laptop you may need to press and hold the Fn key, then press and hold the windows key
and then press and hold the pause key.
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Section 11 - W7220 JADE™ Economizer Module
For Windows XP this screen will come up. Click on “Device Manager” in the left column.
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Section 11 - W7220 JADE™ Economizer Module
For Windows XP this screen will come up. Click on Hardware and then click on Device manager.
Find the ports file and expand it. You’ll see the list of various COM Port options. The one you are
looking for is listed under TUSB3410 Device.
Note, in this case it is COM8.
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Section 11 - W7220 JADE™ Economizer Module
Close this file and go back to your PC Module tool program.
Now that you know the correct COM Port, click on the Settings drop down menu and choose the
one that matches your device manager port for TUSB3410 Device.
If the port that the TUSB3410 file does not show up on your settings list for the port, close the file
and reopen it. This means you opened the file before the P C Module was connected to your
personal computer.
To the right of Setting there is Help menu button. The Help menu provides an explanation about
each system configuration setting and provides the parameters and functions of specific set
points.
The configuration screen allows you to choose your System configuration. Note these are the
same configuration settings that are available using menus buttons in the JADE™ controller.
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Section 11 - W7220 JADE™ Economizer Module
Under the Sensor options select sensor or sensors you are currently using in the system.
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Honeywell Economizers 63-8594-01
Section 11 - W7220 JADE™ Economizer Module
When you are complete with the configuration click on the next tab economizer/ DCV in the left
column. Under Economizer/ DCV tab you can configure your Ventilation, Demand Control
Ventilation, Temperature and Enthalpy settings.
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Section 11 - W7220 JADE™ Economizer Module
Calibration tab allows the operator to adjust for an out of calibration temperature or humidity
sensor.
In the JADE™ economizer controller there is a sensor offset calibration that allows you to
change the economizer program to adjust for an out of calibration sensor.
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Section 11 - W7220 JADE™ Economizer Module
Another benefit of this tool is the ability for semi automatic checkout of the economizer system.
From the list of the parameters shown on the screen choose the ones you would like to test by
clicking the box next to it.
The last box gives you the ability to display the temperature that the sensors are reporting to the
economizer controller.
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Section 11 - W7220 JADE™ Economizer Module
You can check the settings on the JADE™ controller that you have connected by clicking the
Read from JADE™ button.
If the JADE™ controller is not connected properly you will receive a message that data was not
able to be read. Check the power to your JADE™ and connection between the JADE™ and PC
module and between the PC module and the personal computer.
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Section 11 - W7220 JADE™ Economizer Module
Or you can click on the Apply to JADE™ button in the bottom right of the screen after you
selected correct configurations. This feature downloads your configuration to the JADE™
controller.
Once information has been applied to JADE™ successfully you see a pop-up window indicating
the data has been written successfully to the JADE™ controller.
Note that you can Read from or Apply to JADE™ while in any of Configuration screens on the
left.
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Section 11 - W7220 JADE™ Economizer Module
If you have a preferred configuration for a building or location and do not want to reconfigure the
JADE™ economizer controllers every time you use one, you can save the configuration file on
your personal computer and configure the JADE™ economizer controllers from this file.
When click Save to file you’ll be able to save your file as new or replace an existing file. You can
customize your RTU Model Name and Model Description.
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Section 11 - W7220 JADE™ Economizer Module
By clicking Load from file button you will be able to download a saved file from the list and apply
those settings to JADE™.
Note that you can Load or Save to file while in any of Configuration screens of the left.
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Section 11 - W7220 JADE™ Economizer Module
When you have chosen the parameters, click “Start Checkout” button.
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Section 11 - W7220 JADE™ Economizer Module
A checkout window will display. If you checked Display sensors temperature in the checkout
screen, you’ll see those temperatures display.
The screen will only display the sensors that are connected and are reporting to the economizer
controller.
If economizer and sensors are connected properly to the PC MOD the word “Passed” will
display.
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Section 11 - W7220 JADE™ Economizer Module
If there are issues with the sensor selection and actual sensor connections the display will
change to red letters.
The Fail/Missing means that you failed to connect the sensor that you have chosen in the
checkout tab. In this example the Dry bulb Outdoor air sensor was chosen on the checkout tab
and that sensor is missing in the system.
The 74/connected means that the system is reporting an Enthalpy Outdoor Air temperature at 74
degrees F and the enthalpy sensor is connected which contradicts your set points.
Note the sensor connection is reporting failed in red letters also.
You will need to go back to the configuration screen and change your sensors to match the
economizer controller configuration that is being reported.
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Section 11 - W7220 JADE™ Economizer Module
When all settings match and are shown in green letters, you can click “Start Checkout” button.
As you go through the check out process you will need to observe the movement of the dampers
and confirm the contacts are made to turn on the stages of compressor on the roof top unit.
When each step is confirmed as working, click the Passed button to move to the next test. If you
have a failure, example damper failed to open, click the Failed button below to move to the next
step.
Do not interrupt a function while it is in process. Wait until the function check is complete then
you can stop the test process.
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Section 11 - W7220 JADE™ Economizer Module
After you have completed the checkout, the tool will generate a report of the checkout process
which you can save on a customized file on your Personal Computer by clicking Save report
button.
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Section 11 - W7220 JADE™ Economizer Module
The logging screen allows you long term recording and verification for validation that the
economizer is working and the building is operating to save energy. On the right side of the
screen, select all properties that you would like to log. During the logging process the personal
computer will need to be connected to the PC module since the data will be saved on the
personal computer file, not in the module.
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Section 11 - W7220 JADE™ Economizer Module
As you select the parameters you want to log on the right, you will see the current value of the
selected points displayed in the center of the screen.
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Honeywell Economizers 63-8594-01
Section 11 - W7220 JADE™ Economizer Module
Select the log file where you would like to store the data on the personal computer then select
the interval of time for the data collection. The range for the data collection is from 5 seconds up
300 seconds in 5 seconds intervals.
Click the Start button. The logging light in the lower left corner would start blinking; indicating
data is being recorded in the interval you selected. You can Pause or Stop this recording at any
time.
Once you stop the logging and want to check the data, open the file that you saved the data in.
The file is .csv and can be opened using Microsoft excel.
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Section 12 - Sensors for Economizer Modules
Section 12 - Sensors for Economizer
Modules
Temperature
C7250A
C7650
C7046
C7150
Enthalpy
Carbon Dioxide
C7400S
C7632
C7232
C7400A
(legacy)
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Honeywell Economizers 63-8594-01
Section 12 - Sensors for Economizer Modules
Sensor Features
Sensor
Series
Type of Sensor
Application
C7046
Temperature
Discharge Air
C7150
C7400A
C7400S
C7650
Legacy
Temperature
Comments
Mixed Air
3K ohm for use with legacy
OEM
economizer controllers
(W7459 and W7212)
Legacy Enthalpy
Sensor
Enthalpy Changeover
S-bus
Communicating
enthalpy sensor
Legacy
Temperature
Enthalpy sensor
for use with legacy
economizer controllers
W7459 and W7212
OEM
OEM
OEM
Specific
Product
Number
C7046A1004
C7046A1038
C7150B1004
C7150B1020
C7400A2001
C7400A2009
C7400A2017
C7400A2025
C7400S1000
(used with W7220
economizer)
Legacy Dry Bulb
Changeover for legacy
C7650A1001
economizers (W7459 and
W7212) used only in
differential changeover
applications
C7250
C7660
Temperature 20K Dry Bulb Changeover
Single (referential) dry bulb
Legacy
changeover for legacy
Temperature
C7250A1001
C7660A1000
economizers (W7459 and
W7212)
C7232
Carbon Dioxide
Indoor Wall Module
Indoor Wall Module
Indoor Wall Mount
Indoor Wall Mount
Duct Mount
Duct Mount
Duct Mount
Duct Mount
C7632
Wall Mount
Duct Mount
C7262
C7262
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Wall Mount
Wall Mount
158
Display, Relay Output
No Display, Relay Output
Display, No Honeywell Logo,
Relay Output
No Display, No Honeywell
Logo, Relay Output
Display
No Display
Display, No Honeywell Logo
No Display, No Honeywell
Logo
No Display, No Adjustment
Settings
No Display, No Adjustment
Settings
Display, Honeywell logo
No display, Honeywell logo
C7232A1008
C7232A1016
C7232A1024
C7232A1032
C7232B1006
C7232B1014
C7232B1022
C7232B1030
C7632A1004
C7632B1002
C7262A1008
C7262A1016
Section 12 - Sensors for Economizer Modules
Type of Sensors for Economizer
The C7400A enthalpy sensor combines
temperature and humidity measurements into
a single device. The output is 4 to 20 mA. All
sensing elements are solid state electronics
which have been determined to be durable
over more than fifteen years of usage. There
are no setpoints on the sensor since all
adjustments are done on the control
module.The C7400A sensors are used with
the legacy economizers, e.g., W7459 and
W7212.
In some dry, arid climates it may be sufficient
to use a dry bulb sensor in place of a C7400
enthalpy sensor to achieve energy savings.
The output of the C7650 sensor has large
dead bands and should only be used in
differential temperature changeover
applications where there is a C7650 sensor in
the return air and one in the outdoor air and
the economizer compares the two
temperatures for the lower temperature. Using
the A, B, C, or D settings on the economizer in
single dry bulb mode results in a 10 degree
“dead band” with the C7650 dry bulb sensor.
See chart. The economizer will allow free
cooling when the temperature is rising through
the dead band until the temperature rises
above the highest temperature on the dead
band. On temperature decline, the economizer
will not reset to OK for economize until the
outdoor temperature goes below the lower
temperature. This only happens if power is to
the economizer during the decline through the
deadband.
C7400 Enthalpy
C7650 Temperature
mA
OUTPUT
19
LIGHT ON
18
D SETPOINT
DEADBAND
17
LIGHT OFF
16
LIGHT ON
C SETPOINT
DEADBAND
15
LIGHT OFF
14
LIGHT ON
B SETPOINT
DEADBAND
13
During the temperature decline if the
economizer power is cycled off when the
temperature is in the 10F deadband, the
economizer will determine the outdoor air
temperature is good for free cooling and will
reset the OK to economize.
LIGHT OFF
12
LIGHT ON
A SETPOINT
DEADBAND
11
LIGHT OFF
10
9
85
90
70
80
60
65
55
75
13
16
18
21
24
27
29
32
C7650 SETPOINT CHART
THE SETPOINT LINES ON THE CHART ARE AN INDICATION OF OUTSIDE DRY
BULB TEMPERATURES AT WHICH SWITCHING OF THE DAMPERS FROM
RETURN AIR TO OUTSIDE AIR OCCURS. IT IS INDICATED ON THE W7459
MODULE BY THE FREE COOLING LIGHT.
DEG F
DEG C
40
4
45
7
50
10
95
35
100
38
M25284A
159
Honeywell Economizers 63-8594-01
Section 12 - Sensors for Economizer Modules
In differential mode the signal from the dry
bulb analog sensor to the economizer is 10 to
20 mA so the economizer can choose the
higher output (indicates lower temperature)
and can choose which temperature is better.
Lets look at an example: When using a C7650
and the C setting is chosen on the economizer
logic module, the module will open the outside
air damper at approximately 58F. When the
temperature is rising, the module will allow
free cooling until the temperature reaches 68F.
At this point the module will determine the
outdoor temperature is no longer good for free
cooling and will turn on the mechanical
cooling. The temperature needs to drop to
below 58F for the economizer to reset and
allow free cooling without mechanical cooling
again UNLESS the power is turned off to the
economizer and the economizer is allowed to
reset.
The C7660 sensor was developed to
eliminate the 10 degree F deadband issue
using the C7650 in single dry bulb
applications. When using single with
Honeywell legacy economizers, replace the
C7650 with the C7660. The C7660 has a 3
position switch used for setting the outdoor
changeover temperature. There are 8 user
selectable changeover temperatures: 48F,
53F, 55F, 58F, 63F, 68F, 73F, or 78F with a +/1F hysteresis around the selection
temperature. If you change the temperature
change over setpoint the change is made in
real time so you can reset the changeover
temperature without recycling power.
C7660A Temperature
C7046 Temperature
C7150 Temperature
C7232A
C7632A
Carbon Dioxide
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Section 12 - Sensors for Economizer Modules
The sensor now contains the algorithm and
will send either a 4mA OR a 20 mA signal to
the economizer where 4mA is NOT OK to
economize and 20mA is OK to economize.
C7150B can be used for this function since the
resistance curves for both are identical. The
C7046A is 8 inches (20 cm) long which makes
it a better selection for larger air handlers than
the single point C7150B. When installing the
C7150B use a simple smoke bomb to
determine air flow and locate the sensor in a
location where the OA and RA have the best
mix. Do not use a smoke bomb in an occupied
building.
For example if the operator selects a 73F
change over, the sensor will send a 20 mA
signal to the logic module at 72F and below
and will send a 4 mA signal to the logic
module at 74F and above.
The C7660 can only be used in referential
mode or single dry bulb only, it cannot be used
in differential dry bulb mode. If you are using
differential mode it is recommended to use two
of the C7650 sensors.
The legacy economizer modules are all
provided with sensor connections for either a
mixed or supply air sensor input to modulate
the mixed air dampers. Either the C7046A or
161
The DCV economizer modules can be used
with any indoor air content sensor with a 0 or 2
to 10 Vdc output. For most indoor applications
Honeywell C7232 or C7632 carbon dioxide
sensors will be used. They are available in
either wall or duct mount versions with or
without display.
Honeywell Economizers 63-8594-01
Section 12 - Sensors for Economizer Modules
C7150 and C7046 Mixed and Supply Air Sensors
OHMS
6200
6000
5800
5600
5400
5200
5000
4800
4600
4400
4200
4000
3800
3600
3400
3200
3000 OHMS at 77
DEG. F (25 C)
3000
2800
2600
2400
2200
2000
1800
1600
1400
50
DEG. C 10
DEG. F
55
13
60
16
65
18
70
21
C7046A 3,000 OHM MIXED AIR OR
SUPPLY AIR SENSOR
75
24
80
27
85
29
90
32
95
35
100
38
C7150B 3,000 OHM MIXED AIR
OR SUPPLY AIR SENSOR
M25285
This chart is for the C7046A or C7150B supply
or mixed air sensors designed to be used with
all of the economizer logic modules. These
sensors have negative temperature
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162
coefficients, as the ambient temperature at the
sensor increases, the resistance of the sensor
decreases. It changes 70 ohms in resistance
for every 1°F (0.6°C) change in temperature.
Section 12 - Sensors for Economizer Modules
Mixed or Supply Air Sensor Control Sequence
The control sequence for the sensor
connected to the mixed or supply (discharge)
air temperature terminals on all of the
economizer modules is basically the same.
When the space is occupied, the outdoor air
damper remains at the minimum position until
there is a call for cooling from the commercial
thermostat. If the mixed or supply air
temperature is below the lower end of the
setpoint range of 50°F (10°C) the outside air
dampers will remain at minimum. If the
measured temperature is within the range of
50 to 56°F (10 to 13.3 °C) the outside
dampers will not be modulated open or closed.
If the mixed air temperature is above 56°F
(13.3°C) the outside air dampers will be
modulated open until the temperature is within
the range or the dampers are full open. If the
enthalpy of the outside air is too high, the
outside air dampers will be returned to
minimum.
Carbon Dioxide Sensor
volume for a room increases when occupancy
increases. When people leave the space, CO2
levels will decrease and the outside air
dampers close to a more economical setting.
Ventilation cost can be controlled by using
CO2 sensing in addition to economizer
functions.
Honeywell C7632A
Carbon Dioxide Sensor
Carbon dioxide (CO2) is frequently used as
the sensor for demand ventilation control.
People exhale CO2 as they breathe. If there is
a large number of people in a space the level
of CO2 will increase. When a CO2 sensor is
installed in the space, a signal is sent to the air
handler mixed air control which modulates the
outside air dampers. The required ventilation
163
An indoor air quality analysis should be done
to evaluate the air quality in a building.
Analysis of all compounds in addition to
carbon dioxide is required to evaluate the
overall healthiness of a building.
Contaminants, such as volatile organic
compounds, are not detected with a CO2
sensor. Complex electronic equipment is
required to fully test for the presence of all the
various compounds which may be in the air
supply. CO2 sensor based ventilation control
is an enhancement to economizer control, not
a substitute for a total professional air quality
evaluation of a building.
If you have a building with a high
concentration of a gas other than CO2,
consider using the IAQP ventilation method
but always consult a professional trained in
control of gases.
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Section 12 - Sensors for Economizer Modules
JADETM Economizer (W7220) Sensors
The JADETM economizer does not use the
same sensors as the legacy economizer
controllers. The JADETM economizer controller
uses new digital sensors for control. The
Mixed Air Temperature and Outdoor Air
temperature only sensors are 20k negative
temperature coefficient, or NTC, sensors
(C7250).
The JADETM recognizes the sensors and
configures the system to the valid sensors
installed in the system. If two sensors are set
as OA the JADETM will give an error message
which will not clear until the sensor has been
reset.
The Outdoor Air, Return Air and optional
Discharge Air sensors communicate with the
JADETM on a two-wire communication bus, or
Sylkbus. (C7400S). The JADETM sensors can
be can either be wired using a two-pin Molex
connector or a two-pin side connector. Each
sensor unit pack includes a two-pin side
connector in the packaging.
All Outdoor Air, Return Air and Discharge Air
sensors are the same part number. During
installation, the sensor is set for the
appropriate type using the three-position DIP
switch located on the sensor.
DIP
SWITCH
LABEL
DIP
SWITCHES
(3)
SYLK BUS
TERMINALS
(1 AND 2)
SYLK BUS
2 PIN SIDE
CONNECTOR
M32271B
Once installed, a sensor can be changed to a
different application by simply changing the
DIP switch setting. The brown or orange color
of the label matches the wiring terminals on
the JADETM economizer controller.
C7250A 20k temperature
sensors
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164
C7400S Sylkbus sensors
Section 12 - Sensors for Economizer Modules
Note that the old C7150, C7400A and
C7400C analog sensors used with the
W7212 and W7459 economizers are not
compatible with the W7220 and must be
replaced with:
C7250A (MAT)
Either one C7250A Mixed Air Temperature
sensor plus one C7250A Temperarure
Only Outdoor Air sensor for dry bulb
temperature changeover;
C7250A (OAT)
__________________________________________________
OR one C7250A Mixed Air Temperature
sensor and one C7400S Outdoor Air
sensor for single enthalpy changeover;
C7250A (MAT)
C7400S (OA)
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Section 12 - Sensors for Economizer Modules
OR one C7250A Mixed Air Temperature
sensor and two C7400S Outdoor Air and
Return Air sensors for differential enthalpy
changeover;
C7250A (MAT)
C7400S (OA)
C7400S (RA)
________________________________________________
OR one C7250A Mixed Air Temperature,
one C7250A Temperature Only Outdoor
Air sensor, and one C7400S Return Air
sensor for differential temperature
changeover.
C7250A (MAT)
S-bus in this case ignores the humidity
input from the RA sensor.
C7250A (OAT)
C7400S (RA)
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Section 13 - Checkout
Honeywell has a checkout procedure for every
economizer logic module. The checkout
procedures are listed in the back of the
Product Data Sheet or Installation Instructions
shipped with every economizer or can be
found at www.customer.honeywell.com. Type
the part number in the search area and click
167
on GO. Find the complete part number in red
and click on it. The specific product number
page will appear and click on the Literature tab
and select either the Product Data Sheet or
Installation Instructions. You can download the
literature or print a copy directly from the site.
Honeywell Economizers 63-8594-01
Section 13 - Checkout
Standard Checkout Procedure
When the first line of a procedure states:
“Execute step one. Checkout Preparation.”
this directs you to reset the logic module
to the initial checkout mode before
proceeding.
Checkout W7212
24 VAC POWER
REMOVE
JUMPER P-P1
JUMPER T-T1
N1
N
P1
P
EXH
Set
EXH
Min
Pos
T1
T
SO+
620 OHM 1/4W
RESISTOR
AQ
SO
SR+
24
VAC
HOT
24
VAC
COM
1
IAQ
B
C
A
D
2
0-10 VDC OUT
TO ACTUATOR
24 VAC POWER
(HOT) TO 1
5
IAQ
MIN
Free
Cool
SR
TR1
+
Open
IAQ
Max
AQ1
TR
3
4
EF
EF1
M23971A
To checkout the operation of the W7212,
W7213 or W7214:
1. Remove the MAT or DAT sensor from
T-T1.
5. Connect the actuator to the + and -.
6. Provide 24 Vac to TR and TR1
7. Provide 24 Vac hot to terminal 1.
2. Remove the jumper from P-P1 and place
it on T-T1.
3. Remove the OAT and RAT sensors from
SO and SO+ and SR and SR+.
4. Place a 620 ohm resistor across SO and
SO+ and a 620 ohm resistor across SR
and SR+.
63-8594-01 Honeywell Economizers
168
8. The motor will drive open.
9. Remove the 24 Vac from TR and TR1 and
the motor should drive close.
If using a Honeywell DCA, the + on the logic
module will be connected to 3 and does not
need to be connected to – since the actuators
are internally connected to ground.
Section 13 - Checkout
If using two transformers make sure the
transformers are tied to the same COM and
are from the same power source.
169
Honeywell Economizers 63-8594-01
Section 13 - Checkout
Check out C7400 with W7459, W7210 and W7212:
You can check if the C7400 is within the RH
and temperature range with the W7212 logic
module using the following method.
• Make sure the sensors are all connected to
the logic module.
• To check the return air C7400 sensor on Sr
and Sr+: Measure the voltage across Sr and
Ground.
• To check the outdoor air C7400 sensor on
So and So+: Measure the voltage across So
and Ground.
• You must have an accurate reading of the
temperature and humidity.
• Find the line on the chart on this slide for
return air C7400 sensor that corresponds to
the voltage you read across Sr and ground.
It should intersect with the humidity and
temperature of your conditions.
• There is a ± 0.3 Vdc range for the sensor
accuracy and above 90% RH the accuracy
changes to ± 0.4Vdc.
The lines and chart for the So C7400 sensor
are slightly different. The reason is for a
differential of the sensor inputs to the logic
modules for a choice between the two sensors
for differential enthalpy. To assure accuracy in
reading these charts, which are small, a table
is provided on the following page for ease of
use.
SO C7400 CHECK
C7400 SO AND GND VDC
20 18 16 14 12 10 8
6
4
90
VDC
1.0
VDC
1.5
VDC
1.9
VDC
2.4
VDC
2.9
VDC
3.4
VDC
3.9
VDC
44
VDC
4.9
+/ .4VDC
>90% RH 80
70
PERCENT 60
RELATIVE
HUMIDITY 50
+/ .3VDC 40
<90% RH
SR C7400 CHECK
C7400 SR AND GND VDC
30
+/ .4VDC
>90% RH
20
20 18 16 14 12 10 8
6
4
90
60
(16)
70
(21)
80
(27)
TEMPERATURE ºF (ºC)
90
(32)
100
(38)
80
M23991A
VDC
1.0
VDC
1.5
50
(10)
VDC
2.0
VDC
2.6
VDC
3.1
VDC
3.6
VDC
4.1 C
VD
4.6
VDC
5.1
10
40
(4)
70
PERCENT 60
RELATIVE
HUMIDITY 50
+/ .3VDC
<90% RH
40
30
20
10
40
(4)
50
(10)
60
(16)
70
(21)
80
(27)
TEMPERATURE ºF (ºC)
63-8594-01 Honeywell Economizers
170
90
(32)
100
(38)
M23990A
Section 13 - Checkout
SO
<90% RH
mA curve
Low (-.3 Vdc)
Nominal
High (+.3 Vdc)
> 90% RH
mA curve
Low (-.4 Vdc)
Nominal
High (+.4 Vdc)
Vdc measured between SO and GND
4
0.672
0.972
1.272
6
1.158
1.458
1.758
8
1.644
1.944
2.244
10
2.13
2.43
2.73
12
2.616
2.916
3.216
14
3.102
3.402
3.702
16
3.588
3.888
4.188
18
4.074
4.374
4.674
20
4.56
4.86
5.16
4
0.572
0.972
1.372
6
1.058
1.458
1.858
8
1.544
1.944
2.344
10
2.03
2.43
2.83
12
2.516
2.916
3.316
14
3.002
3.402
3.802
16
3.488
3.888
4.288
18
3.974
4.374
4.774
20
4.46
4.86
5.26
SR
<90% RH
mA curve
Low (-.3 Vdc)
Nominal
High (+.3 Vdc)
> 90% RH
mA curve
Low (-.4 Vdc)
Nominal
High (+.4 Vdc)
Vdc measured between Sr and GND
4
0.72
1.02
1.32
6
1.23
1.53
1.83
8
1.74
2.04
2.34
10
2.25
2.55
2.85
12
2.76
3.06
3.36
14
3.27
3.57
3.87
16
3.78
4.08
4.38
18
4.29
4.59
4.89
20
4.8
5.1
5.4
4
0.62
1.02
1.42
6
1.13
1.53
1.93
8
1.64
2.04
2.44
10
2.15
2.55
2.95
12
2.66
3.06
3.46
14
3.17
3.57
3.97
16
3.68
4.08
4.48
18
4.19
4.59
4.99
20
4.7
5.1
5.5
NOTE: The accuracy of the sensors used to measure the temperature and humidity of the
environment needs to be considered. If you are close to the measurements your C7400
sensor is probably working.
171
Honeywell Economizers 63-8594-01
Section 13 - Checkout
Check out for W7220 JADETM Economizer:
Inspect all wiring connections at the
economizer module's terminals and verify
compliance with the installation wiring
diagrams in the Installation Instructions.
4. Press the enter button to start the test.
5. The unit will pause and then displays
"INPROGRESS" on the screen.
To perform a checkout test:
1. Scroll to the desired test in the Checkout
menu using the up and down buttons on
the front of the W7220. Once you depress
the enter button for CHECKOUT, the
actuator will place the damper in a closed
position.
2. Press the enter button to select the item.
3. "RUN?" will display on the screen.
63-8594-01 Honeywell Economizers
172
6. When the test is complete OR you "hear"
the relays close, "DONE" appears on the
screen or you can press the up arrow with
circle button to go to the next test.
7. When all parameters have been tested,
press the up arrow in circle button (Menu
up) to end the test.
The checkout tests can be performed at the
time of installation or any time during the
operation of the system to determine if the
system is operable.
Section 14 - Simulator for W7212
173
Honeywell Economizers 63-8594-01
Section 14 - Simulator for W7212
Honeywell created a simulator to help teach
users how the product functions. The program
is a 10.5 MB file that can be easily loaded onto
your computer desk top. In addition there is a
power point presentation that can also be
downloaded from the same web page to guide
you on how to use the simulator.
On the picture shown below all of the white
arrows are inputs to the economizer logic from
sensors or a commercial thermostat. All of the
red arrows denote changes (potentiometers)
or settings that can be made by the user. And
the black arrows are out puts of the logic
module to the actuator to change the damper
position or to the stages of mechanical cooling
equipment and exhaust fan.
M23992A
63-8594-01 Honeywell Economizers
174
Section 14 - Simulator for W7212
To download the program:
Go to www.customer.honeywell.com/economizertools. The W7212 economizer simulator is the
last file on the page.
Click on it to open the zipped file. Download the LabView Runtime program then open the
W7212 (Trade).exe file.
175
Honeywell Economizers 63-8594-01
Section 14 - Simulator for W7212
63-8594-01 Honeywell Economizers
176
Section 15 - Demo for W7220
Section 15 - Demo for W7220
177
Honeywell Economizers 63-8594-01
Section 15 - Demo for W7220
Honeywell created a demo to help teach users
how the product functions. The program is a
4.0 kB file that can be easily loaded onto your
computer desk top.
The demo may not match the latest firmware
version of the JADETM controller, the demo is
to be used primarily as a training tool. The
JADETM will only display the sensors or
actuator functions that connected to it; the
demo will show all functions available on the
JADETM controller.
To download the program you will need Adobe
Air on your computer. Go to the Adobe
website for a free download.
The six menu items are shown in the left
column of the demo, they are:
Go to www.customer.honeywell.com/
economizertools.The JADETM Economizer
Demo download will appear and click on it. It
requires that Adobe Flash Player be installed.
An option to download Flash Player is given.
The JADETM demo simulates the functions of
the JADETM Controller and allows the user to
walk through the 6 root items on the menu and
will display on the screen as they will on the
LCD on the device.
63-8594-01 Honeywell Economizers
178
Status, Setpoints, System Setup, Advanced
setup, Checkout and Alarms. The user steps
through the demo just as you would on the
device using the Up, Down, enter and back to
root menu keys.
Also in the left column is the toggle on or off
for the tool tip options where you can either
hide or show the tool tips on the screen.
Showing the tool tips means when you hover
the pointer over the terminal labels on the
demo, an explanation of the terminal function
will display on the screen.
Section 15 - Demo for W7220
When the demo is opened, the STATUS
screen will appear. To step through the items
on the status menu, click on the return button.
The first item "ECONO AVAIL YES" will
appear on the screen under STATUS. This
information is telling the operator that the
current status of the economizing function is
the conditions are good for economizing. In
the upper right corner of the screen a down
arrow appears. This means you can use the
down arrow button to scroll to the next status
item which is "ECONOMIZING". On this
screen you will see both up and down arrows
in the upper right of the screen which means
you can either scroll up or down. AT the end
of the STATUS menu, you can use the left
button with the up arrow in a circle to go up to
the root menu screen and "STATUS" will again
appear. You can use the down arrow to go to
the next root menu which is "SYSTEM
SETUP". Note in the STATUS menu you could
not change the values because JADETM is
reporting the status of the system. In the
SYSTEM SETUP menu items you will see an
179
enter arrow in front of the value which allows
you to change the value of the item. For
example if you want to change the units for
degrees from F to C then you scroll down to
the menu item UNITS DEG and click on the
enter button. F will appear on the screen with
an up arrow in the upper right hand of the
screen. If you click on the up arrow the units
change to C. Click on the enter arrow and
"CHANGE STORED will appear momentarily
on the screen. You have now changed all set
up and status for temperature to degrees C.
To change it back to F you simply go to the
Units Deg item in the SYSTEM SETUP menu
and change it back to F.
Using the buttons and screen you can walk
through all of the functions of the JADETM.
Refer to the menu tables in section 11 for
description of the functions of JADETM. Follow
the instruction on the web page to download
the file.
Honeywell Economizers 63-8594-01
Section 15 - Demo for W7220
63-8594-01 Honeywell Economizers
180
Section 16 – Economizer Savings Estimator
Section 16 – Economizer Savings Estimator
181
Honeywell Economizers 63-8594-01
Section 16 – Economizer Savings Estimator
Honeywell has an easy to use savings
estimation software that was designed by
independent consulting Energy Engineers in
1999 and is updated every 3 or 4 years. The
software allows the user to input information
about the equipment on a building, type of
control, occupancy schedule, cost of adding
various economizer and DCV options and
demand and electrical charges. With the
simple click of the mouse, the software will
print an estimation of the electrical and gas
usage in the building and will estimate the
savings and payback for the upgrade options
and location the user has chosen.
You can choose the default settings for a
building type or set your own occupancy
schedule and control set points for the
buildings.
To download the program:
Go to www.customer.honeywell.com/
economizertools. The Economizer Savings
Estimator download will appear (it is a zipped
folder). Click on it and open it or save it. Also,
the JADETM Economizer Demo download is
available at this location.
You can choose to download all weather files
for the US, Canada and California climate
zones or just the files you need for your
region.
The savings is based on 112 years of weather
data from 1900 to 2012.
Make sure you update the cost of electricity
and demand charges in your region. The
software will error if you do not add in the gas
and electricity charges for the location.
63-8594-01 Honeywell Economizers
182
The savings estimator evaluates the operating
costs, cost savings, and payback period
associated with alternate control strategies or
a limited number of small prototypical
commercial buildings and one residential
option. The program performs hourly
calculations with fairly detail models of the
building and equipment in order to determine
the gas energy, electrical energy, and
electrical demand costs. This program is not
useful as an energy audit tool for a specific
building. However, it does allow the user to
study the impact of the following variables:
•
•
•
•
•
•
Climate
Building size
Occupancy schedule
Utility rates
Equipment type and efficiency
Cost of controls
The actual costs from this program could differ
significantly from those for a particular building
due to differences in building specifications,
equipment characterizes, specific yearly
weather conditions, actual occupancy, etc.
However, it is expected that the percentage
cost savings associated with the alternative
control strategies would be similar for similar
building types.
For more detailed description of the data used
to calculate the cost savings, click on the
“Tools” tab at the top of the first screen of the
Estimator and choose “Help”.
Section 17 - Retrofit and Upgrades
Section 17 - Retrofit and Upgrades
From
Upgrade to
Honeywell T7100, T7300, T7350, T7400 or Honeywell TB7220 or TB8220 commercial thermostats
competitive commercial or residential
Prestige® IAQ thermostat (THX9421R5013) and EIM
thermostats
(THM5421R1013) OR Prestige®/EIM Y pack
(YTHX9421R5051)
Economizer control systems without
Solid State Economizer Controller
integration of the first stage of cooling from
JADETM W7220A controller with C7250 Mixed air and C7250
the commercial thermostat.
Outdoor air sensor for dry bulb or C7400S enthalpy sensor.
Economizer controls such as the W859
See section 11 for JADETM information.
with temperature based remote bulb
controllers as the changeover devices.
Economizer control systems with an
electromechanical enthalpy based control
such as the H205 as the changeover
device.
Economizer control systems with single
JADETM W7220A controller with C7250 Mixed air and C7250
sensor enthalpy such as H705 or W7459. Outdoor air sensor for dry bulb or C7400S enthalpy sensor.
See section 11 for JADETM information.
Economizer control systems without
Enhances Economizer Controller
demand control of ventilation (DCV) or
TM
indoor air content sensors such as H705, JADE W7220A controller with C7250 Mixed air and C7250
W7459, or W6210 and W7210. Variable air Outdoor air sensor for dry bulb or C7400S enthalpy sensor.
See section 11 for JADETM information. Add a CO2 sensor
volume air handlers without occupancy
for the demand control ventilation function.
based demand control ventilation.
C7232, C7262 or C7632 carbon dioxide sensor for demand
control ventilation to maximize heating and cooling season
energy cost savings.
183
Honeywell Economizers 63-8594-01
Section 17 - Retrofit and Upgrades
TRANSFORMER
L1
(HOT)
MIXED AIR
DAMPER MOTOR
T1
L2
T2
W
T675 DRY BULB
HIGH LIMIT
CONTROL
F
10
20
W
120
15
70
W
40
°F
70
0
R
60
1 0
16
B
100
80
OAT
1 0
100
90
80
R
140
F
110
120
130
100
140
8
90
R
5
80
6
70
170
60
MINIMUM
POSITION
CONTROL
0
B
R
T991 MIXED
AIR CONTROL
B
NC
C
NO
RELAY
RC
NC
Y1
C
NO
Y2
COOLING
COMMERCIAL THERMOSTAT
T1
L1
COOLING
CONTACTOR
T2
L2
M13847A
Before: Series 90 with Dry Bulb Changeover
Series 90 was widely used for fifty years as the primary form of electronic temperature control.
Due to the durability of these devices there are many of them still in use on rooftop air handlers
throughout the world. This is a typical configuration for a dry bulb economizer. The high limit is
typically set at 70 or 75°F (21 or 24°C). A relay is used to switch the mixed air control circuit as
the first stage of cooling to a minimum position when the outside air minimum position
potentiometer provides ventilation by preventing full closure of the outside air dampers.
63-8594-01 Honeywell Economizers
184
Section 17 - Retrofit and Upgrades
M945 DAMPER MOTOR
TRANSFORMER
L1
(HOT)
FAN STARTER
AUXILIARY CONTACT
T1
L2
T2
COOLING
W
R
FAN
HIGH
SPEED
W
1K2
2K1
H205
B
SYSTEM
SWITCH
B
1K1
R
R
COOL
O
AUTO
MIXED AIR
TEMPERATURE
CONTROLLER
W
HEAT
Y2
R
B
2K
1
2
Y1
3
FAN
SWITCH
ON
G
AUTO
1K
MINIMUM POSITION
CONTROL
RELAY COILS
B
2ND STAGE HEAT
W859D ECONOMIZER ASSEMBLY
W2
1ST STAGE HEAT
W1
T874/Q674 THERMOSTAT/SUBBASE
M13848A
Before: W859 Economizer With H205
The W859 and W957 are combinations of multiple control devices that were designed to be
installed directly on top of a Mod III or IV Honeywell damper actuator. Included was a mixed air
controller, transformer, relays for high limit switchover, minimum damper position and
connections for a SPST outside air high limit.
The mixed air controller capillary extended from the case of the units to the mixed air section.
The setpoint for the mixed air temperature was on the case.
The outside air changeover control was added during installation and could be either dry bulb or
enthalpy depending on the application. Many of these were installed on rooftop units with the
schematic illustrated above using a H205 enthalpy control as the switchover device. The H205
was an electromechanical enthalpy control with a nylon humidity element.
The W859, W957 and H205 are no longer available for purchase and need to be replaced with a
JADETM controller and new Modutrol Motor.
Replace the W859 or W957 with a JADETM controller and a M7285A1045 Modutrol motor.
185
Honeywell Economizers 63-8594-01
Section 17 - Retrofit and Upgrades
W973 SINGLE ZONE PANEL
2
1
HEAT
R
3 HEAT
COOL 3
COOL 1
COOL 2
1
COOL
MOD-HEAT
BH
RH
SENSOR
STAT
C +20 H
3
4
2
COOL NG
STAGES
MOD-COOL
RC
BC
WC
24 VAC
ECONO
N
SERIES 90 MIXED AIR
DAMPER ACTUATOR
T T1
LOW O.A. AMBIENT
COMPRESSOR
LOCKOUT STAT
(OPTIONAL)
3 COOL
2
WH
W
90
5
1
TR TR
W B
Y R
24 VAC
TRANSFORMER
W
T1
R
T2
B
3
4
2
1
5
T7067 THERMOSTAT
H205 ENTHALPY
CONTROL
MINIMUM
POSITION
CONTROL
W
100
80
120
R
60
40
°F
1
2
140
3
M13850
Before: W973 With H205 Control
The W973 was a sequencing panel for Single zone systems that could provide multiple
modulating or two-position output stages of control plus a modulating economizer. A dry bulb
high limit and a H205 enthalpy control were widely used in the economizer circuit. If they are
replaced with a solid state economizer controller, the actuator for the dampers need to be
replaced. In the replacement illustration on the next page a direct coupled actuator is used.
63-8594-01 Honeywell Economizers
186
Section 17 - Retrofit and Upgrades
ROOF TOP UNIT
MA TEMP
SENSOR
20K NTC
W7220 ECONOMIZER CONTROLLER MODULE
Y1
O/B
OCC
1
W2
3
1K1
AUX2-I
OCC
E-GND
MAT
MAT
OAT
OAT
OAT TEMP
SENSOR
20K NTC
G
W1
Y2
AUX1-0
CO2
SENSOR
2-10 VDC
(OPTIONAL)
Y2I
IAQ (2-10V)
IAQ COM
IAQ 24V
ACT (2-10V)
ACT COM
ACT 24V
Y2O
Y1I
Y1O
C R
1K1
1
R(+)
2
24 VAC
MS3103J
3 S-BUS
OR MS3105J
C(-)
4 S-BUS
2
5
1
NOTE THAT THE 20K NTC SENSOR CAN BE MOUNTED IN THE OAT TERMINALS ONLY IN THIS CONFIGURATION.
2
WHEN USING A HEAT PUMP THERMOSTAT, THERMOSTAT TERMINALS MAY DIFFER: W1 MAY BE LABELED O
OR B AND W2 MAY BE LABELED W.
3
WHEN USING A HEAT PUMP WITH DEFROST FEEDBACK, ADD AN ISOLATION RELAY BETWEEN O AND C.
THERMOSTAT
M32650D
After: W973 with W7220 Economizer Module
There are many older controllers in field that may be replaced with new controllers and new
economizers. Call your local distributor or the Honeywell Commercial controls hotline if you have
questions that are not addressed in this application guide.
187
Honeywell Economizers 63-8594-01
Section 17 - Retrofit and Upgrades
Replacement of W7459Axxx and M7415Axxx with
W7220A1000 (JADETM) and M7215A1008
Step by step guide to assist you in successful replacement of the W7459 economizer and M7415
black motor with a W7220 JADETM economizer controller and M7215 black motor:
1. Remove all wires from the W7459. Mark each wire with the terminal designation (e.g.,
1,2,3,4, TR1, TR etc.) as it is removed from the W7459.
2. Remove the M7415 and using the same mounting holes mount the M7215 motor in it’s
place.
3. Mount JADETM on the inside of the Rooftop unit where it will be easy to read the display and
to change the settings.
4. Wire JADETM to M7215 using three new wires and 1/4-in. quick connects on motor end of
wires:
M7215 wire termination
W7220 Wire termination
TR
ACT 24V (hot)
TR1
ACT COM
IN (+)
ACT (2-10V)
5. Terminate wires removed from the W7459 to the JADETM:
W7459 wire termination
W7220 wire termination
1
Y1-In
2
Y1-Out
3
Y2-In
4
Y2-Out
5
NA
TR
R
TR1
C
N
OCC
P-P1
NA
T-T1
MAT*
So-So+
OAT or S-Bus*
Sr-Sr+
S-Bus*
* Sensor to be changed
63-8594-01 Honeywell Economizers
188
Section 17 - Retrofit and Upgrades
Old
Sensor
C7046A
C7150B
C7400
C7660
Description
New Sensor
Discharge Air
Mixed Air
Solid State Enthalpy
Solid State Dry Bulb
C7400S1000
C7250A1001
C7400S1000
C7250A1001
189
Honeywell Economizers 63-8594-01
Section 17 - Retrofit and Upgrades
There is no longer need for Minimum Position and Changeover Curve (A,B,C,D) potentiometers.
The changeover curve boundaries and minimum position are set using the LCD display menu
item "Setpoints" and the 4 buttons on JADETM.
For programming JADETM refer to the Installation Instructions (62-0331) supplied with the
JADETM.
63-8594-01 Honeywell Economizers
190
Section 17 - Retrofit and Upgrades
Replacement of W7212Axxx with W7220A1000 (JADETM)
Step by step guide to assist you in successful replacement of the W7212 economizer with a
W7220 JADETM economizer controller:
1. Remove all wires from the W7212. Mark each wire with the terminal designation (e.g.,
1,2,3,4, TR1, TR etc.) as it is removed from the W7212.
2. Mount JADETM on the inside of the Rooftop unit where it will be easy to read the display and
to change the settings.
3. Wire JADETM to the existing M7215 motor using three new wires and ¼ in quick connects on
motor end of wires:
M7215 wire termination
W7220 Wire termination
TR
ACT 24V (hot)
TR1
ACT COM
IN (+)
ACT (2-10V)
4. Terminate wires removed from the W7212 to the JADETM:
W7212 wire termination
W7220 wire termination
1
Y1-In
2
Y1-Out
3
Y2-In
4
Y2-Out
5
NA
TR
R
TR1
C
N
OCC
P-P1
NA
T-T1
MAT*
So-So+
OAT or S-Bus*
Sr-Sr+
S-Bus*
AQ-AQ1
IAQ terminals **
EF-EF1
EFH1***
* Sensor to be changed
** CO2 sensor no longer requires a separate transformer, can be powered by JADETM
*** EFH1 out is 24 Vac, need to add a DPDTrelay between EFH1 and C terminals.
191
Honeywell Economizers 63-8594-01
Section 17 - Retrofit and Upgrades
Replace the old sensors with new JADETM sensors:
Old Sensor
Description
New Sensor
Termination on W7220
C7046A
Discharge Air
C7400S1000
S-Bus
C7150B
Mixed Air
C7250A1001
MAT
C7400
Solid State Enthalpy
C7400S1000
S-Bus
C7660
Solid State Dry Bulb
C7250A1001
OAT
W7220
W7212
There is no longer need for Minimum Position, DCV and Changeover Curve (A, B,C,D)
potentiometers.
The changeover curve, CO2 boundaries and minimum position are set using the LCD display
menu item "Setpoints" and the 4 buttons on JADETM.
For programming JADETM refer to the Installation Instructions (62-0331) supplied with the
JADETM.
63-8594-01 Honeywell Economizers
192
Section 17 - Retrofit and Upgrades
Replacement of W7210Axxx with W7220A1000 (JADETM)
Step by step guide to assist you in successful replacement of the W7210 economizer with a
W7220 JADETM economizer controller:
1. Remove all wires from the W7210. Mark each wire with the terminal designation (e.g.,
1,2,3,4, TR1, TR etc.) as it is removed from the W7210.
2. Mount JADETM on the inside of the Rooftop unit where it will be easy to read the display and
to change the settings.
3. Wire JADETM to the existing M7215 motor using three new wires and ¼ in quick connects on
motor end of wires:
M7215 wire termination
W7220 Wire termination
TR
ACT 24V (hot)
TR1
ACT COM
IN (+)
ACT (2-10V)
4. Terminate wires removed from the W7210 to the JADETM:
W7210 wire termination
W7220 wire termination
1
Y1-In
2
Y1-Out
3
Y2-In
4
Y2-Out
5
NA
TR
R
TR1
C
P-P1
NA
T-T1
MAT*
So-So+
OAT or S-Bus*
Sr-Sr+
S-Bus*
+
ACT (2-10V)
-
ACT COM
24 VAC HOT
ACT 24V
* Sensor to be changed
193
Honeywell Economizers 63-8594-01
Section 17 - Retrofit and Upgrades
Replace the old sensors with new JADETM sensors:
Old Sensor
Description
New Sensor
Termination on W7220
C7046A
Discharge Air
C7400S1000
S-Bus
C7150B
Mixed Air
C7250A1001
MAT
C7400
Solid State Enthalpy
C7400S1000
S-Bus
C7660
Solid State Dry Bulb
C7250A1001
OAT
There is no longer need for Minimum Position, DCV and Changeover Curve (A, B,C,D)
potentiometers.
The changeover curve, CO2 boundaries and minimum position are set using the LCD display
menu item "Setpoints" and the 4 buttons on JADETM.
For programming JADETM refer to the Installation Instructions (62-0331) supplied with the
JADETM.
63-8594-01 Honeywell Economizers
194
Section 17 - Retrofit and Upgrades
Replacement of W859F with W7220A1000 (JADETM)
and M7285A1045
Step by step guide to assist you in successful replacement of the W859 economizer with a
W7220 JADETM economizer controller and M7285A1045 motor:
1. Remove all wires from the W859. Mark each wire with the terminal designation (e.g., H205
violet in, violet out,T1, T2 etc.) as it is removed from the W859.
2. Remove the W859 including motor and using the same mounting holes mount the
M7285A1045 motor in its place.
3. Mount JADETM on the inside of the Rooftop unit where it will be easy to read the display and
to change the settings.
4. Terminate wires removed from the W859 to the JADETM:
W859F wire termination
W7220 wire termination
H205 terminal 3 = violet in
Y1-In
H205 terminal 3 = violet out
Y1-Out
H205 terminal 1 = black/blue
Y2-In
H205 terminal 1 = black/red
Y2-Out
R (use system transformer)
C (use system transformer)
Internal MAT
MAT*
Internal OA changeover
OAT or S-Bus*
R
ACT COM
W
ACT (2-10V)
B
Not terminated to W7220
*Sensor to be changed
1. Replace T874 thermostat with a two stage commercial programmable thermostat.
2. Add earth ground to the W7220 JADETM controller.
195
Honeywell Economizers 63-8594-01
Section 17 - Retrofit and Upgrades
The M7285A1045 is powered with transformer connected to T1 and T2 (L1 and L2 as shown
above). The MAT internal to the W859 is replaced with a C7250A1001 sensor connected to the
MAT on the W7220. Add a C7400S1000 S-Bus sensor for the outdoor air changeover. Use
separate transformers for the motor and for W7220. The W7220 must be earth grounded.
Old Sensor
Description
New Sensor
C7046A
Discharge Air
C7400S1000
C7150B
Mixed Air
C7250A1001
C7400
Solid State Enthalpy
C7400S1000
C7660
Solid State Dry Bulb
C7250A1001
There is no longer a need for Minimum Position and Changeover Curve (A, B, C, D)
potentiometers. The changeover curve boundaries and minimum position are set using the LCD
display menu item "Setpoints" and the 4 buttons on JADETM.
For programming JADETM refer to the Installation Instructions (62-0331).
63-8594-01 Honeywell Economizers
196
Section 17 - Retrofit and Upgrades
Replacement of W957G with W7220A1000 (JADETM)
and M7285A1045
Step by step guide to assist you in successful replacement of the W957 economizer with a
W7220 JADETM economizer controller and M7285A1045 motor:
1. Remove all wires from the W957. Mark each wire with the terminal designation (e.g.,
1,2,3,4, T0, T2 etc.) as it is removed from the W7459.
2. Remove the W957 including motor and using the same mounting holes mount the
M7285A1045 motor in its place.
3. Mount JADETM on the inside of the Rooftop unit where it will be easy to read the display and
to change the settings.
4. Terminate wires removed from the W957 to the JADETM:
W957G wire termination
W7220 wire termination
1
Y1-In
2
Y1-Out
3
Y2-In
4
Y2-Out
T0 = power hot
R (use system transformer)
T2 = power common
C (use system transformer)
S1 and S2
MAT*
SR and +
RAT (S-Bus)
++ and So
OAT or S-Bus*
Z and Y
Not needed on JADETM
P1 = enthalpy curve set
Use menu, LCD and buttons to set
P2 = temperature range set
Not needed on JADETM
P3 = Calibration pot
Not needed on JADETM
P4 = throttling range pot
Not needed on JADETM
P5 = Minimum position pot
Use menu, LCD and buttons to set
R
ACT COM
W
ACT (2-10V)
B
Not terminated to W7220
* Sensor to be changed
5. Add a two stage commercial programmable thermostat.
6. Use separate transformers for the motor and for W7220. Add earth ground to the W7220
JADETM controller.
197
Honeywell Economizers 63-8594-01
Section 17 - Retrofit and Upgrades
Old Sensor
Description
New Sensor
C7046A
Discharge Air
C7400S1000
C7150B
Mixed Air
C7250A1001
C7400
Solid State Enthalpy
C7400S1000
C7660
Solid State Dry Bulb
C7250A1001
W957G Replaced with W7220 and M7285A1045 Mod Motor
There is no longer need for Minimum Position and Changeover Curve (A,B,C,D) potentiometers.
The changeover curve boundaries and minimum position are set using the LCD display menu
item "Setpoints" and the 4 buttons on JADETM.
For programming JADETM refer to the Installation Instructions (62-0331) supplied with the
JADETM.
63-8594-01 Honeywell Economizers
198
Section 17 - Retrofit and Upgrades
Cross Reference
Any Honeywell economizer can be upgraded to use the latest economizer models with the
added options of Demand Control Ventilation, exhaust fan set point or fault detection and
diagnostics system shutdown. See below for cross reference and upgrade options for the
economizer modules and sensors.
Sensors
Temperature
Sensor
C7046A1004
C7046A1012
C7046A1020
C7046A1038
C7046A1046
C7150B1004
C7150B1020
C7150B1038
C7150B1046
C7660A1000
C7660A1008
C7650A1001
C7650A1027
Comments
Standard with 8 in probe
OEM Carrier #HH88AW010
OEM York #025-22625
C7046A1038 has 12 inch probe
OEM Rheem with 24 inch leads
Standard 3k ohm @ 70°F
OEM Carrier 3750 @ 70°F #HH79AZ001
Standard 3750 @ 70°F used with W957F
Standard 10k @ 70°Fused with W7340
Standard
Carrier
Standard use only with differential dry bulb for single dry
bulb use C7660A1000
OEM Carrier use only with differential dry bulb for single
dry bulb use C7660A1000
Can be replaced with
C7046A1004
C7046A1004
C7150B1004
C7150B1004
C7660A1000
C7650A1001
CO2
Sensor
C7232A1008
C7232A1016
C7232A1024
C7232A1032
C7232A1057
C7232B1006
C7232B1014
C7232B1022
C7232B1030
C7262A1008
C7262A1016
C7632A1004
C7632B1002
Comments
Wall with display, 1 relay out with Honeywell logo
Wall no display, 1 relay out with Honeywell logo
Wall with display, 1 relay out, no Honeywell logo
Wall no display, 1 relay out, no Honeywell logo
Wall with display, 1 relay out, Honeywell logo,
220 Vac, on-off
Duct with display, 1 relay and 1 analog out with Honeywell logo
Duct no display, 1 relay and 1 analog out
Duct with display, 1 relay and 1 analog out, no Honeywell logo
Duct no display, 1 relay and 1 analog out, no Honeywell logo
Wall with display, 1 relay and 1 analog out
Wall no display, 1 relay and 1 analog out
Wall no display, with Honeywell logo, 1 analog out
Duct no display, with Honeywell logo, 1 analog out
199
Can be replaced with
C7232A1016
C7232A1008
C7232A1008
C7232A1016
none
C7232B1014
C7232A1008
C7232B1006
C7232B1014
C7262A1016
C7262A1008
Honeywell Economizers 63-8594-01
Section 17 - Retrofit and Upgrades
Enthalpy
Sensor
C7400A1004
C7400A1012
C7400A1020
C7400A1038
C7400A1046
C7400A1053
Comments
Can be replaced with
Standard
OEM York #10125
Use with H705 only
OEM Lennox #54G4401
OEM Carrier #HH57AC078A
OEM Bard #8602-046
C7400A1004
C7400A1004
C7400A1004
C7400A1004
C7400A1004
Economizers
Economizer
H205A
Comments
Can be replaced with
All models
W7220A1000 (JADETM) +
C7250A1001 + C7400S1000 +
actuator (See actuator section)
H705A
All models
W6210A
All models
W7220A1000 (JADETM) +
C7250A1001 + C7400S1000 +
actuator (See actuator section)
W7220A1000 (JADETM) +
C7250A1001 + C7400S1000 + series
72 actuator
W6215A1008
Standard
W7210A
All models
W7212A1009
All models
W7215A1006
All models
W7215B1004
With outdoor IAQ
No replacement
W7299A1005
All models
W7340A1004
W7340A1012
W7340A1020
W7340B1002
W7340C1000
W7345A1009
W7345B1001
OEM Trane Standard
With wire harness
W7220A1000 (JADETM) +
C7250A1001 + C7400S1000
+M7215A1008
W7340C1000
W7340C1000
W7340C1000
W7340C1000
W7220A1000 (JADETM) +
C7250A1001 + C7400S1000 + series
72 actuator
W7220A1000 (JADETM) +
C7250A1001 + C7400S1000 + series
72 actuator
W7220A1000 (JADETM) +
C7250A1001 + C7400S1000
W7220A1000 (JADETM) +
C7250A1001 + C7400S1000
OEM Trane #X1365108202
OEM Trane Standard #X1365108203
OEM Trane
OEM Trane
Standard W7340A1004 + M7215A1016
W7399A1004
63-8594-01 Honeywell Economizers
W7345B1001
W7399C1010
200
Section 17 - Retrofit and Upgrades
Economizer
W7399B1002
W7399C1010
Comments
Can be replaced with
W7399C1010
W7415A1004
OEM Standard
W7340C1000 + M7215A1016
OEM Trane #X13610221-02
W7459A
All models
W7220A1000 (JADETM) +
C7250A1001 + C7400S1000
W7459B1009
Use with M7405 and W7401
W7220A1000 (JADETM) +
C7250A1001 + C7400S1000
+MS3103J1030
W7459C1007
Use with M8405 all models
W7459D1005
High enthalpy limit model
W7220A1000 (JADETM) +
C7250A1001 + C7400S1000
W7220A1000 (JADETM) +
C7250A1001 + C7400S1000
W7460A1008
Standard
W7460B1006
W7499A
With outdoor IAQ
All models
W859A
All models
W957B
All models
W7220A1000 (JADETM) +
C7250A1001 + C7400S1000
W7220A1000 (JADETM) +
C7250A1001 + C7400S1000 +
M7215A1008
No replacement
W7220A1000 (JADETM) +
C7250A1001 + C7400S1000 +
M7215A1008
W7220A1000 (JADETM) +
C7250A1001 + C7400S1000 +
M7285A1045 Check for input voltage a
transformer may be required.
W7220A1000 (JADETM) +
C7250A1001 + C7400S1000 +
M7285A1045. Check for input voltage;
a transformer may be required.
Commercial Thermostats
Commercial Thermostats
All T7300's with Q7300H
Comments
Communicating
Modulating
All T7300's with Q7300A2008
All T7300's with Q7300A and
Q3700C
Conventional
Conventional or Heat Pump
201
Can be replaced with
T7350H1009
T7350H1017
T7350M1008
T7350A1004
T7350B1002
Honeywell Economizers 63-8594-01
Section 17 - Retrofit and Upgrades
Commercial Thermostats
All T7300's with non-Q7300H
T7300 with Q7300A2016,
Q7300A2008, Q7300C2004 and
Q7300C2012
THX9421R5013
YTHX9421R5051
Comments
Conventional or Heat Pump
Commercial VisionPRO 8000
Can be replaced with
T7350D1008
TB8220U1003
Prestige® IAQ thermostat when used
with a W7220 Jade economizer and
THM5421R1013 EIM can display the
alarms on the screen
Y pack including Prestige®
thermostat and EIM module
THX9421R5013
+THM5421R1013
Actuators
Actuator
M7215A1008
M7215A1016
M7215A1024
M7215A1032
M7415A1006
Comments
Standard
Trane #X1365087804
York #8565
Lennox #60M1101
Standard
M7415A1014
York #7625
M7415A1048
Lennox #54G4601
MS3103J1010
MS3105J3030
MS7105K2030
MS7105K2038
MS7105K2046
MS7503A2030
MS7503A2038
MS7505A2030
MS7505A2038
Standard 27 lb-in DCA Use with W7220 (Jade) ONLY
Standard 44 lb-in DCA Use with W7220 (Jade) ONLY
Lennox 44 Lb-in DCA
Rheem 44 lb-in DCA
Standard 44 lb-in DCA
Standard 27 lb-in DCA
Kele KAS-27-M Standard 27 lb-in DCA
Standard 44 lb-in DCA
Kele KAS-44-M Standard 44 lb-in DCA
63-8594-01 Honeywell Economizers
Can be replaced with
M7215A1008
M7215A1008
M7215A1008
M7215A1008 for 2-10
Vdc
M7215A1008 for 2-10
Vdc
M7215A1008 for 2-10
Vdc
202
MS7105K2046
MS7105K2046
MS7503A2030
MS7505A2030
Section 17 - Retrofit and Upgrades
W7220 JADETM Y-Pack Table
Dry Bulb Changeover Y packs
Dry Bulb with black motor
Dry Bulb w/non-communicating DCA
Dry Bulb w/communicating 27 lb-in DCA
Dry Bulb w/communicating 44 lb-in DCA
Dry Bulb w/communicating 27 lb-in DCA and CO2
wall sensor without a display
Economizer Logic Module
SENSORS
Mixed Air or Outdoor Air Temperature Sensor
Outdoor Air Enthalpy Sensor
Wall Mount CO2 sensor with fixed settings
Wall Mount CO2 sensor with selectable settings
Duct Mount CO2 sensor with selectable settings
ACTUATORS
Black footmounted motor
Non-communicating DCA 27 lb-in
Communicating DCA 27 lb-in
Communicating DCA 44 lb-in
203
Y Pack
Y7220A7215
Logic Module
OAT sensor
MAT Sensor
Black Motor
YL7220A7503
Logic Module
OAT sensor
MAT Sensor
DCA OA
YL7220AJ3103
Logic Module
OAT sensor
MAT Sensor
DCA OA
YL7220AJ3105
Logic Module
OAT sensor
MAT Sensor
DCA OA
YL7220ACW3103
Logic Module
OAT sensor
MAT Sensor
DCA OA
CO2 sensor
Logic Module
Components
Includes
W7220A1000
C7250A1001
C7250A1001
M7215A1008
W7220A1000
C7250A1001
C7250A1001
MS3103J1030
C7632A1004
W7220A1000
MAT or OAT sensor
OAE
CO2 sensor
CO2 sensor
CO2 sensor
C7250A1001
C7400S1000
C7632A1004
C7232A1016
C7232B1014
Black motor
DCA 27 lb-in
DCA 27 lb-in
DCA 44 lb-in
M7215A1008
MS7503A2030
MS3103J1030
MS3105J3030
W7220A1000
C7250A1001
C7250A1001
MS7503A2030
W7220A1000
C7250A1001
C7250A1001
MS3103J1030
W7220A1000
C7250A1001
C7250A1001
MS3105J3030
Honeywell Economizers 63-8594-01
Section 17 - Retrofit and Upgrades
Enthalpy Changeover Y packs
Y Pack
Y7220S7215
Logic Module
OAE sensor
Enthalpy with black motor
MAT Sensor
Black Motor
Y7220SCW7215
Logic Module
Enthalpy with black motor and CO2 wall sensor with OAE sensor
a display
MAT Sensor
Black Motor
CO2 Sensor
Y7220SCD7215
Logic Module
Enthalpy with black motor and CO2 duct sensor with OAE sensor
a display
MAT Sensor
Black Motor
CO2 Sensor
YL7220S7503
Logic Module
OAE sensor
Enthalpy w/non-communicating DCA
MAT Sensor
DCA OA
YL7220SJ3103
Logic Module
OAE sensor
Enthalpy w/communicating 27 lb-in DCA
MAT Sensor
DCA OA
YL7220SJ3105
Logic Module
OAE sensor
Enthalpy w/communicating 44 lb-in DCA
MAT Sensor
DCA OA
YL7220SCW3103
Logic Module
OAE sensor
Enthalpy w/communicating 27 lb-in DCA and CO2
wall sensor with a display
MAT Sensor
DCA OA
CO2 Sensor
63-8594-01 Honeywell Economizers
204
Components
Includes
W7220A1000
C7400S1000
C7250A1001
M7215A1008
W7220A1000
C7400S1000
C7250A1001
M7215A1008
C7232A1016
W7220A1000
C7400S1000
C7250A1001
M7215A1008
C7232B1014
W7220A1000
C7400S1000
C7250A1001
MS7503A2030
W7220A1000
C7400S1000
C7250A1001
MS3103J1030
W7220A1000
C7400S1000
C7250A1001
MS3105J3030
W7220A1000
C7400S1000
C7250A1001
MS3103J1030
C7232A1016
Section 17 - Retrofit and Upgrades
Enthalpy w/communicating 27 lb-in DCA and CO2
duct sensor with a display
205
YL7220SCD3103
Logic Module
OAE sensor
MAT Sensor
DCA OA
CO2 Sensor
W7220A1000
C7400S1000
C7250A1001
MS3103J1030
C7232B1014
Honeywell Economizers 63-8594-01
Section 17 - Retrofit and Upgrades
63-8594-01 Honeywell Economizers
206
APPENDIX
Section 18 - Appendix
Glossary
Air Content Sensor—A sensor used to
measure certain components of the air in
a room or other supply source. It is used
as an input to adjust control sequences or
parameters. Carbon Dioxide (CO2) is
frequently measured as one component
of overall air quality to make adjustments
to ventilation controllers.
Changeover Control—The control device
used to switch over from outside to return
air or visa versa to make optimum use of
outside air for free cooling.
Controlled Medium—The medium in which
the controlled variable exists. In a room
temperature control loop, the controlled
variable is the space temperature and the
controlled medium is the air within the
room.
Air Quality Standard—A government
mandated regulation which specifies the
maximum contaminant concentration
beyond which health risks are considered
to be unacceptable.
Controlled Variable—The quantity or
condition that is measured and controlled.
Demand Control Ventilation—An energy
efficiency measure to reduce outdoor air
intake and the energy required to
condition the outdoor air when a space is
not occupied at the maximum design
density.
Automatic Control Loop—A set of devices
that react to a change or imbalance in the
controlled variable by adjusting other
variables to restore the desired balance.
Balance Point—The outside air temperature
value at which the cooling equipment is
turned on. It is used to calculate the
savings from an economizer control
application.
Differential Enthalpy—The selection of a
supply air source for the mixed air based
on the lower enthalpy value derived from
two enthalpy sensors located in the
outside and return air sources.
Building-Related Illness—A diagnosable
illness with identifiable symptoms whose
cause can be directly attributed to
airborne pollutants within a building such
as Legionnaires disease or
hypersensitivity pneumonitis.
Most Honeywell electronic enthalpy
economizer modules are based on a
similar setpoint configuration. The
available settings A, B, C and D are for
single sensor or high limit enthalpy
control. For differential enthalpy the dial is
turned to D.
Carbon Footprint—A measure of the
greenhouse gases (GHG) that are
produced by activities of a person, or a
business that involve burning fossil fuels.
207
Honeywell Economizers 63-8594—01
APPENDIX
Dilution—The reduction of airborne
concentration of contaminants through an
increase in outdoor air supplied to the
area.
Enthalpy—A measure of the total energy
content of air based upon both
temperature and moisture content. When
selecting air for cooling it is a better
measurement than solely temperature.
Discharge or Supply Air—Air which has
been treated (heated or cooled) before
being supplied to the conditioned area or
room.
Final Control Element—A device such as a
valve or damper that is used to change
the value of the manipulated variable.
Positioned by an actuator.
Economizer—Economizer controls provide
“free cooling” during the cooling season
by measuring the temperature or enthalpy
of outside air. Outside air is used for
cooling if it is sufficiently cool and dry.
This reduces the usage of the mechanical
cooling equipment and reduces cooling
costs.
Greenhouse Gas Emissions—Gases in an
atmosphere that absorb and emit
radiation within the thermal infrared
range. This process is the fundamental
cause of the greenhouse effect. The main
greenhouse gases in the Earth's
atmosphere are water vapor, carbon
dioxide, methane, nitrous oxide, and
ozone
Electric Control—A control circuit that
operates on line or low voltage and uses
a mechanical device, such as a
temperature-sensitive bellows, to perform
control functions, such as actuating a
switch or positioning a potentiometer. The
controller signal typically operates or
positions an electric actuator or may
switch an electrical load directly or
through a relay.
Indoor Air Quality (IAQ)—The
characteristics of the indoor climate of a
building, including the gaseous
composition, temperature, relative
humidity, and airborne contaminants.
Integrated Economizer—An economizer
control circuit that replaces the inefficient
“wild” economizer by only enabling
outside air for cooling when there is a call
for cooling from the commercial
thermostat and allowing for economizing
and mechanical cooling at the same time.
.
Electronic Control—A control circuit that
operates on low voltage and uses solidstate components to amplify input signals
and perform control functions, such as
operating a relay or providing an output
signal to position an actuator. The
controller typically furnishes fixed control
algorithms based on the circuitry inside
the solid-state components.
Manipulated Variable—The quantity or
condition regulated by the automatic
control equipment to cause the desired
change in the controlled variable.
Electromechanical Controller—A control
device such as the H205 which is
constructed of moving parts instead of
solid state or electronic components.
Typically more calibration and
replacement is required of these devices
than solid state controllers.
63-8594—01 Honeywell Economizers
Mixed Air—The combination of outdoor and
return air prior to mechanical cooling or
heating.
Modulation—A control mode with minute
increments and decrements.
208
APPENDIX
Non-Integrated Economizer—An
economizer control that does not connect
to the thermostat for call for cooling and/
or turns off the economizer cycle after a
set time to turn on the mechanical
cooling.
Total Heat—Same as enthalpy.
Two-Position—A basic on-off control circuit in
which the device being controlled is either
full on or full off with no intermediate
operating positions available. Also
referred to as “on-off” control.
Proportional Band—In a modulating
controller, the control point range through
which the controller output varies through
a predefined range (3 to 15 PSI - 21 to
103 kPa, 2 to 10 volts, 1 to 100%).
Sometimes expressed in percent of
primary sensor span. Commonly used
equivalents are “throttling range” and
“modulating range”, usually expressed in
degrees of temperature.
Volatile Organic Compound (VOC)—One of
a class of chemical components that
contain one or more carbon atoms and
are volatile at room temperature and
normal atmospheric pressure. In indoor
air, VOCs are generated by such sources
as tobacco smoke, building products,
furnishings, cleaning materials, solvents,
polishes, cosmetics, deodorizers and
office supplies.
Sensing Element—A device or component
that measures the value of a variable
such as temperature or humidity.
'Wild Economizer'—A mixed air control
circuit in which outside air is used virtually
on a continuous basis whether or not
there is a call for cooling or occupancy
from the controlled area. This can be very
inefficient in some applications and raise
heating costs.
Setpoint—The value at which the controller is
set such as the desired room temperature
on a commercial thermostat, the
changeover point for dry bulb economizer
changeover or a changeover ppm level of
CO2 in a room for demand control
ventilation.
Zoning—The practice of dividing a building
into sections for heating and cooling
control so that one controller is sufficient
to control the heating and cooling
requirements for the section.
Throttling Range—In a modulation controller,
the control point range through which the
controlled variable must pass to move the
final control element through its full
operating range. Expressed in values of
the controlled variable such as degrees,
percent relative humidity, or pressure in
pounds per square inch or kPa. Also
referred to as “proportional band”. For a
modulating commercial thermostat, the
temperature change required to drive the
manipulated variable from full off to full
on.
209
Honeywell Economizers 63-8594—01
APPENDIX
Accessories for the M74XX Series Actuators
4074EGR Crank Arm Assembly
M3856A
Q298B Linkage Hardware
Enables linking the actuator to an additional damper. Consists of two
crank arm assemblies, two ball joint assemblies, and variable length
push rods (in 10, 16, or 24 inch lengths)
Q298
M11546A
4074EKV Auxiliary Switch
Provides switching capability for controlling auxiliary equipment. The
switch acts as a function of the actuator shaft position
M3852B
Adapters and potentiometers are available to be installed directly on actuator or on W7459 controller.
63-8594—01 Honeywell Economizers
210
APPENDIX
Accessories for the W7220 JADETM Economizer Module
W7220 PCMOD
Interface tool for JADETM controller and Personal Computer
Duct Mount Kit 50053060-001
Duct mounting kit for sensors
2-pin Edge Connector for Sensors 50048926-001
2-pin edge connector for sensors (20
pieces per bag)
6-pin Edge Connector for Field Wiring 50048926-002
6-pin edge connector for field wiring (20
pieces per bag)
211
Honeywell Economizers 63-8594—01
SECTION 18 - APPENDIX
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
customer.honeywell.com
® U.S. Registered Trademark
© 2013 Honeywell International Inc.
63-8594—01 M.S. 03-13
Printed in United States
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