Carrier ERVXXLHB1200 Instruction manual

ERVXXLHB
Energy Recovery Ventilator
Installation Instructions
INTRODUCTION
A05260
ERVXXLHB Unit
The Energy Recovery Ventilator (ERV) is used to exchange indoor
stale air with outside fresh air. The ERV unit is equipped with a
special heat recovery core which transfers sensible heat between
the fresh incoming air and stale exhaust air.
It is required to locate the ERV in a conditioned space. Special
attention should be given to condensate drain, duct application,
balancing the ERV, and locating unit for easy access and routine
maintenance. The cross- flow design core allows entering and
leaving air streams to transfer heat energy without mixing.
NOTE: Read the entire instruction manual before starting the
installation.
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury or property
damage. Consult a qualified installer, service agency or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory- authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Have a fire extinguisher available. Read these
instructions thoroughly and follow all warnings and cautions
included in literature and attached to the unit. Consult local
building codes and the current edition of the National Electrical
Code (NEC) NFPA 70.
In Canada, refer to the current editions of the Canadian Electrical
Code CSA C22.1.
on
Recognize safety information. When you see this symbol
the unit and in instructions or manuals, be alert to the potential for
personal injury. Understand the signal words DANGER,
WARNING, and CAUTION. These words are used with the
safety- alert symbol. DANGER identifies the most serious hazards,
which will result in severe personal injury or death. WARNING
signifies hazards, which could result in personal injury or death.
CAUTION is used to identify unsafe practices, which may result
in minor personal injury or product and property damage. NOTE
is used to highlight suggestions which will result in enhanced
installation, reliability, or operation.
TYPICAL INSTALLATIONS
NOTE: Installation may vary according to the model number and
the position; normal or reverse in which the unit is installed.
There are three common installation methods.
Fully Ducted System
(Primarily for homes with radiant hot water or electric baseboard
heating.) See Fig. 1.
Moist, stale air is exhausted from the high humidity areas in the
home, such as bathrooms, kitchen and laundry room.
Fresh air is supplied to bedrooms and principal living areas. If
required, bathroom fans and a range hood may be used to better
exhaust stale air.
Homes with more than one level require at least one exhaust
register at the highest level.
A122282
Fig. 2 - Exhaust Ducted System
Simplified (Volume Ventilation)
(For homes with forced air heating.) See Fig. 3.
Fresh air and exhaust air flow through the furnace ducts, which
simplifies the installation.
The use of bathroom fans and a range hood is suggested to exhaust
stale air.
NOTE: For this type of installation, the furnace blower must be
running when the unit is in operation.
A12281
Fig. 1 - Fully Ducted System
Exhaust Ducted System (Source Point Ventilation)
(For homes with forced air heating.) See Fig. 2.
Moist, stale air is exhausted from the high humidity areas in the
home, such as bathrooms, kitchen and laundry room. Fresh air is
supplied to the cold air return or the supply duct of the furnace. If
required, bathroom fans and a range hood may be used to better
exhaust stale air.
Homes with more than one level require at least one exhaust
register at the highest level.
NOTE: For this type of installation, it is not essential that the
furnace blower runs when the unit is in operation, but we
recommend it.
A12283
Fig. 3 - Fully Ducted System
2
COMPONENT DESCRIPTION
UNIT INSTALLATION
The following listed items are components of ERVXXLHB. See
Fig.4.
4
2
Select Location
1
3
Inspect Equipment
Move carton to final installation location. Remove the ERV from
carton taking care not to damage unit. Remove all packaging and
inspect unit for damage. Remove parts bag from inside unit. File
claim with shipping company if shipment is damaged or
incomplete.
5
9
LOCATION
The ERV should be located in a conditioned space and in close
proximity to a fused power source. It should be easily accessible
for routine maintenance.
If ERV is installed independent of a forced- air system, unit should
be located near the center of the air distribution system. If ERV is
installed in conjunction with a forced- air system, unit should be
located next to (or close to) the indoor equipment.
8
7
6
10
!
A12284
Fig. 4 - Component Location
CAUTION
UNIT DAMAGE HAZARD
1. Stale air return from building connected to return- air duct
system.
2. Fresh- air intake connected to outdoor air inlet hood.
3. Exhaust- air connected to outdoor air exhaust hood.
4. Mechanical filters trap dust contained in the air.
5. Heat recovery core is a cross- flow type. The core transfers
heat between the 2 air streams. See Fig. 5 and Fig. 6.
6. Blowers bring in fresh- air from outside and exhaust staleair to outside.
7. Electronic control circuit ensures proper unit operation.
8. Fresh- air supply from ERV connected to return- air duct of
forced- air system.
9. Terminal connector block for wiring wall and timer controls.
10. Electrical cord connects to standard 115V outlet.
Failure to follow this caution may result in equipment
damage or improper operation.
Do not install ERV in a corrosive or contaminated
atmosphere.
!
WARNING
ELECTRICAL SHOCK / FIRE HAZARD
Failure to follow this warning could result in property or unit
damage.
Do not use an extension cord as a power source for operating
the ERV.
!
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in reduced unit
efficiency, capacity or unit life.
DO NOT use ERV during construction of a house or when
sanding drywall. This type of dust may damage system.
Mount Unit
A12285
Fig. 5 - Air Distribution (Normal Operation)
The ERV can be suspended from floor joists using chains and 4
springs. Attach metal hanging bracket to all 4 sides of cabinet (see
Fig. 7). Unit should always be installed as level as possible.
A12286
Fig. 6 - Air Distribution (Defrost Mode)
3
Calculating the Duct Size
Use the table below to ensure that the ducts you intend to
install will be carrying air flows at or under the recommended
values. Avoid installing ducts that will have to carry air flows
near the maximum values and never install a duct if its air flow
exceeds the maximum value.
Example of Calculation
PROBLEM: My installation requires two exhaust registers (one
for the kitchen, one for the bathroom). I will connect these registers
to a main duct which will connect to the unit (high speed
performance value of 140 cfm). What size of duct should I use for
the main exhaust duct and for the two end branches leading to the
registers? See Fig. 8.
END
BRANCHES
5˝ø
70 CFM
A12287
Fig. 7 - Chain Spring Installation
M AIN BRANCH
6˝ø 140 CFM
Independent System Application
In the absence of a forced- air system and a typical duct system
layout, the ERV can be applied as an independent or stand alone
unit. To ensure comfort, this type of application involves running
both fresh- air and return- air registers (or stale- air pickup registers)
throughout the home.
!
WARNING
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal injury
or death.
Do not install return- air registers (or stale- air pickup
registers) in same room as gas furnace or water heater.
Fresh- air registers are normally located in bedrooms, dining room,
living room, and basement. It is recommended that registers be
placed 6 to 12 in. (152 to 305 mm) from the ceiling on an interior
wall and airflow directed toward ceiling. If registers are floor
installed, airflow should be directed toward the wall.
Return- air (or stale- air pickup registers) are normally located to
draw from kitchen, bathroom, basement, or other rooms where
stale- air can exist.
Proper size and type of registers must be used to minimize pressure
drop. The velocity of airflow through register should not be above
400 ft/minute.
DUCT
DIAMETER
4- in (102 mm)
5- in (127 mm)
6- in (152 mm)
7- in (178 mm)
8- in (203 mm)
40 cfm
75 cfm
120 cfm
185 cfm
260 cfm
RECOMMENDED
AIR FLOW
19 L/s
35 L/s
57 L/s
87 L/s
123 L/s
A12288
Fig. 8 - Main and End Branches
SOLUTION: Simplified method. (For a more detailed method of
calculating duct size refer to the ASHRAE or HRAI
HANDBOOK).
Main duct: Table above indicates a 6- in  duct: Recommended air
flow: 120 cfm; maximum air flow: 180 cfm. The high speed air
flow of 140 cfm is close enough to the recommended value (120)
and far enough away from the maximum value (180). Therefore a
6- in  duct or larger is an appropriate choice for the main exhaust
duct.
End branches: Each end branch will have to transport an air flow
of 70 cfm (140 divided by 2). Table above indicates a 5- in  duct:
Recommended air flow: 75 cfm; maximum air flow: 110 cfm. The
high speed air flow of 70 cfm is close enough to the recommended
value (75) and far enough away from the maximum value (110).
Therefore a 5- in  duct or larger is an appropriate choice for the 2
end branches.
NOTE: A 4- in  duct would have been too small because the
maximum acceptable value for a 4- in  duct is 60 cfm.
68 M3/H
127 M3/H
204 M3/H
314 M3/H
442 M3/H
60 cfm
110 cfm
180 cfm
270 cfm
380 cfm
NOTE: Examples use imperial measures. The same calculation applies to metric measures.
4
MAXIMUM
AIR FLOW
28 L/s
52 L/s
85 L/s
127 L/s
179 L/s
102 M3/H
187 M3/H
306 M3/H
459 M3/H
645 M3/H
5˝
5˝
4˝
4˝
5˝ø
64 CFM
4˝ø
42 CFM
4˝ø
42 CFM
5˝ø
65 CFM
4˝ø
42 CFM
6˝
6˝ø
129 CFM
6˝ø
93 CFM
6˝ø
96 CFM
6˝ø
84 CFM
6˝
7˝
4˝
4˝
4˝
6˝
6˝
7˝
7˝ø
222 CFM
7˝ø
222 CFM
6˝ø
138 CFM
A12289
Fig. 9 - Example of a design for a fully ducted system for a unit having a high speed performance of 222 cfm
Installing the Ductwork and the Registers
!
FRESH AIR DISTRIBUTION:
WARNING
!
WARNING
PERSONAL INJURY HAZARD
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in personal injury.
Failure to follow this caution may result in property damage.
Never install a stale air exhaust register in a room where there
is a combustion device, such as a gas furnace, a gas water
heater or a fireplace.
When performing duct connection to the furnace, installation
must be done in accordance with all applicable codes and
standards. Please refer to your local building code.
!
CAUTION
!
CAUTION
PROPERTY DAMAGE HAZARD
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in property damage.
Failure to follow this caution may result in property damage.
The ductwork is intended to be installed in compliance with
all local and national codes that are applicable.
When performing duct connection to the furnace supply duct,
this duct must be sized to support the additional airflow
produced by the ERV/HRV. Also, use a metal duct. It is
recommended that the ERV/HRV is running when the furnace
is in operation in order to prevent backdrafting inside
ERV/HRV.
Fully Ducted System
STALE AIR EXHAUST DUCTWORK:
S Install registers in areas where contaminants are produced:
Kitchen, bathrooms, laundry room, etc.
S Install registers 6 to 12 inches (152 to 305 mm) from the ceiling
on an interior wall OR install them in the ceiling.
S Install the kitchen register at least 4 feet (1.2 m) from the range.
S If possible, measure the velocity of the air flowing through the
registers. If the velocity is higher than 400 ft/min. (122 m/min),
then the register type is too small. Replace with a larger one.
FRESH AIR DISTRIBUTION DUCTWORK:
S Install registers in bedrooms, dining room, living room and
basement.
S Install registers either in the ceiling or high on the walls with air
flow directed towards the ceiling. (The cooler air will then cross
the upper part of the room, and mix with room air before
descending to occupant level.)
S If a register must be floor installed, direct the air flow up the wall.
There are two methods for connecting the unit to the furnace:
METHOD 1: SUPPLY SIDE CONNECTION
S Cut an opening into the furnace supply duct at least 18 inches (0.5
m) from the furnace.
S Connect this opening to the fresh air distribution port of the
HRV/ERV (use metal duct). See Fig. 10.
MINIMUM
18’’ (0.5 M)
METAL
DUCT
Exhaust Ducted System
STALE AIR EXHAUST DUCTWORK:
Same as for Fully Ducted System above.
A12290
Fig. 10 - Supply Side Connection
5
S Make sure that the HRV/ERV duct forms an elbow inside the
furnace ductwork.
S If desired, interlock (synchronize) the furnace blower operation
with the HRV/ERV operation.
METHOD 2: RETURN SIDE CONNECTION
S Cut an opening into the furnace return duct not less than 10 feet
(3.1 m) from the furnace (A+B).
S Connect this opening to the fresh air distribution port of the
HRV/ERV. See Fig. 11.
NOTE: For Method 2, it is not essential that the furnace blower
runs when the unit is in operation, but we recommend it. If desired,
synchronize the furnace blower operation with the HRV/ERV
operation.
MINIMUM
18’’ (0.5 M)
METAL
DUCT
A
B
A+B= NOT LESS
10’ (3.1 M)
THAN
A12292
A
Fig. 12 - Method 1: Return- Supply
A
B
B
A+B= NOT LESS
THAN 10’ (3.1 M)
MINIMUM
3’ (0.9 M)
A12291
Fig. 11 - Return Side Connection
A+B= NOT LESS
10’ (3.1 M)
THAN
Simplified Installation
!
WARNING
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in property damage.
When performing duct connection to the furnace, installation
must be done in accordance with all applicable codes and
standards. Please refer to your local building code.
!
CAUTION
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in property damage.
When performing duct connection to the furnace supply duct,
this duct must be sized to support the additional airflow
produced by the ERV/HRV. Also, use a metal duct. It is
recommended that the ERV/HRV is running when the furnace
is in operation in order to prevent backdrafting inside
ERV/HRV.
There are two methods for connecting the unit to the furnace ducts.
See Fig.12 and 13.
A12293
Fig. 13 - Method 2: Return- Return
STALE AIR INTAKE:
S Cut an opening into the furnace return duct not less than 10 feet
(3.1 m) from the furnace.
S Connect this opening to the stale air intake port of the HRV/ERV
(as shown above).
FRESH AIR DISTRIBUTION:
Same instructions as for Method 1 or Method 2.
IMPORTANT: If using Method 2, make sure the furnace blower
operation is synchronized with the unit operation!
For Method 2 (Return- Return), make sure there is a distance of at
least 3 feet (0.9 m) between the 2 connections to the furnace duct.
NOTE: For Method 1, it is not essential to synchronize the
furnace blower operation with the HRV/ERV operation, but we
recommend it.
Connecting the ducts to the unit
IMPORTANT: If ducts have to go through an unconditioned
space (e.g.: attic), always use insulated ducts.
INSULATED FLEXIBLE DUCTS
Use the following procedure for connecting the insulated flexible
duct to the ports on the unit (exhaust to outside and fresh air from
outside).
1. Pull back the insulation to expose the flexible duct.
2. Install good quality aluminum duct tape to prevent potential
water leakage from duct.
3. Attach the flexible duct to the port using tie wrap.
4. Pull the insulation over the joint and tuck it between the inner and outer rings of the double collar.
6
CONNECTING THE UNIT TO THE INSULATED FLEXIBLE DUCTS
1
2
3
5
4
VJ0091
PLACE FLEXIBLE DUCT OVER
INNER PORT RING
A LUMINUM
DUCT TAPE ON
TIE WRAP
ON DUCT TAPE
INSULATION TUCKED
FLEXIBLE DUCT
BETWEEN
INNER AND OUTER RINGS
VAPOR-BARRIER AND PORT
STRAP OVER THE OUTER RING
THE FLEXIBLE DUCT CONNECTED TO THE EXHAUST TO OUTSIDE PORT SHOULD DROP
1"
BELOW THE PORT BEFORE GOING BACK UP.
± 1"
A12562
Fig. 14 - Rigid Ducts
5. Pull down the vapor barrier (shaded part in Fig. 14 over the
outer ring to cover it completely. Fasten in place the vapor
barrier using the port strap (included in unit parts bag). To
do so, insert one collar pin through vapor barrier and first
strap hole, then insert the other collar pin through vapor barrier and center strap hole and close the loop by inserting the
first collar pin in the last strap hole.
IMPORTANT: Make sure the vapor barrier on the insulated ducts
does not tear during installation to avoid condensation within the
ducts.
Use duct tape to connect the rigid ducts to the ports.
IMPORTANT: Do not use screws to connect rigid ducts to the
ports.
Make sure that both balancing dampers are left in a fully open
position before connecting the ducts to these ports (Fresh air to
building port and Exhaust air from building port as shown in
Fig. 15.
Installing the Exterior Hoods
Choose an appropriate location for installing the exterior hoods:
S At a minimum distance of 6 feet (1.8 m) between the hoods to
avoid cross- contamination
S At a minimum distance of 18 inches (457 mm) from the ground
IMPORTANT: Make sure the intake hood is at least 6 feet (1.8 m)
away from any of the following:
S
Dryer exhaust, high efficiency furnace vent, central vacuum vent
S
Gas meter exhaust, gas barbecue- grill
S
Any exhaust from a combustion source
S
Garbage bin and any other source of contamination
Refer to Fig. 16 For connecting the insulated duct to the hoods. An
“Anti- Gust Intake Hood” should be installed in regions where a lot
of snow is expected to fall.
Exhaust hood
Intake hood
18-in
(457 mm)
6-ft
(1.8 m)
6-ft
(1.8 m)
Optional
duct location
18-in
(457 mm)
Tape and duct tie
A12295
Fig. 15 - Opened Balancing Dampers
A11206
Fig. 16 - Exterior Hoods
7
to control the unit. The LED (2) will then show on which mode the
unit is in.
CAUTION
!
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in property damage.
A drain tubing (included) must be installed for all HRV units.
For ERV units, it is not required, however, it is recommended
for climates where the outside temperature typically remains
below - 13_F (- 25_C), over a 24- hour period for several days
in a row, combined with an indoor humidity of 40% or higher.
Connecting the Drain (If applicable)
2
Make a water trap loop in the tube to prevent the unit from drawing
unpleasant odors from the drain source. See Fig. 17. Run the tube
to the floor drain or to an alternative drain pipe or pail.
IMPORTANT: If using a pail to collect water, locate the tube end
approximately 1- in from the top of the pail in order to prevent
water from being drawn back up into the unit.
1 Push Button
A12300
Fig. 19 - Integrated Control
NOTES:
1. The integrated control must be turned OFF to use an optional main control.
2. If an optional auxiliary control is used, if activated, this auxiliary control will override the optional main control.
Refer to table below to see how to operate the unit using its
integrated control.
8" MIN.
8" MAX.
± 1"
PRESS ON PUSH
BUTTON
LED COLOR
Once
Amber
Twice
Green
Three Times
No Light
A12351
Fig. 17 - Water Trap
Insert a drain plug (included in parts bag) in alternate drain fitting
located on top of the unit. See Fig. 18.
Furthermore, if the drain will not be used, insert a second
drain plug (included in parts bag) in the drain fitting located
underneath the unit.
A12352
Fig. 18 - Drain Plug
Integrated Control
All units are equipped with an integrated control, located in front
of the electrical compartment. See Fig. 19. Use the push button (1)
RESULTS
Unit is on Low
Speed
Unit is on High
Speed
Unit is
OFF
If a problem occurs during the unit operation, its integrated control
LED (2) will blink. The color of the blinking light depends on the
type of error detected. Refer to Troubleshooting Table for further
details.
Boot Sequence
The unit boot sequence is similar to a personal computer boot
sequence. Each time the unit is plugged after being unplugged, or
after a power failure, the unit will perform a 30- second booting
sequence before starting to operate. During the booting sequence,
the integrated control LED will light GREEN (unit set in normal
defrost) or AMBER (unit set in extended defrost) for 5 seconds,
and then will shut off for 2 seconds. After that, the LED will light
RED for the rest of the booting sequence. During this RED light
phase, the unit is checking and resetting the motorized damper
position. Once the motorized damper position completely set, the
RED light turns off and the booting sequence is done.
NOTE: No command will be taken until the unit is fully booted.
Setting Extended Defrost
The unit is factory set to normal defrost. In cold region, it may be
necessary to setup extended defrost. During the first 5 seconds of
booting sequence, while the integrated control LED is GREEN,
8
press on push button until the LED turns AMBER (about 3
seconds). See Fig. 20.
Once the wall control(s) connections have been made, insert the
terminal connector in the electrical compartment front face.
NOTE: For information about the operation of the wall controls,
refer to the user guide.
T ERMINAL
CONNECTOR
LOCATION
A12301
Fig. 20 - Setting Extended Defrost
1
MAIN WALL CONTROL
NO C NC I OC OL Y R G B
Y
G B
OC
G B
A12302
Fig. 23 - OneTouch Connection
Electrical Connection to main wall control (all units).
OFF MIN MAX
-5°C
23°F
CO
-
M FO R T Z ON E
5°C
41°F
01/98
For more convenience, this unit can also be controlled using an
optional main wall control.
IMPORTANT: Always disconnect the unit before making any
connections. Failure in disconnecting power could result in
electrical shock or damage of the wall control or electronic module
inside the unit.
IMPORTANT: Never install more than one optional main wall
control per unit. Make sure that the wires do not short- circuit
between themselves or by touching any other components on the
wall control. Avoid poor wiring connections. To reduce electrical
interference (noise) potential, do not run wall control wiring next
to control contactors or near light dimming circuits, electrical
motors, dwelling/building power or lighting wiring, or power
distribution panel.
Use the terminal connector included in the installation kit to
perform the electrical connection for main and optional wall
controls. Check if all wires are correctly inserted in their
corresponding holes in the terminal block. (A wire is correctly
inserted when its orange receptacle is lower than another one
without wire. Refer to Fig. 21, wire A is correctly inserted, but not
wire B.)
Electrical connection to OneTouch (all units).
XXX
XX
Electrical Connection to Optional Wall Control
A12296
Fig. 22 - Terminal Connector
#
IMPORTANT: When installed in reverse position (upside down)
in a cold region where outside temperature could drop below
- 20_C (- 4_F) for more than 5 days in a row, the unit must always
be set in extended defrost.
-20°C
-4°F
NO C NC I OC OL Y R G B
2
A12303
Fig. 24 - Main Wall Control
A
B
A11211
Fig. 21 - Terminal Connector
9
Electrical Connection to Optional Auxiliary Wall Controls
DEHUMIDISTAT
60-MINUTE
CRANK TIMER
PUSH-BUTTON TIMERS
(5 MAXIMUM)
NO C NC I OC OL Y R G B
A12304
Fig. 25 - Optional Auxiliary Wall Controls
NOTE: If an optional auxiliary wall control is activated and then, the Dehumidistat is being activated, this one will override the auxiliary
wall control commands.
Table 1 – Basic Control
MODE
OPERATION
DAMPER
POSITION
FAN
SPEED
Off
Off
Closed to outside
Off
Low
Air exchange with outside
Open to outside
Low
High
Air exchange with outside
Open to outside
High
Table 2 – OneTouch Push Button Control
OPERATION
DAMPER
POSITION
FAN
SPEED
Off
Off
Closed to outside
Off
Low
Air exchange
with outside
Open to outside
Low
Intermittent
40 min off
20 min
exchange low speed
Air exchange
with outside
Open to outside 20 min
Closed 40 min
Low
Off
High
Air exchange
with outside
Open to outside
High
MODE
Table 3 – Compatible Optional Auxiliary Wall Controls
DEHUMIDISTAT
60- minute crank timer
20- minute lighted push- button switch (5 max.)
Table 4 – Standard Control
MODE
Off
Low
Intermittent
40 min off
20 min
exchange low
speed
DEHUMIDISTAT
POSITION
Any
Satisfied
Call for dehumidification
OPERATION
Off
DAMPER
POSITION
Closed to outside
FAN SPEED
ON LED
Off
Low
High
Off
AIR EXCHANGE
LED
Off
On
On
On
Off
Air exchange
with outside
Open to outside
Satisfied
Off 40min
Low 20 min
Closed to outside/
open
Off/Low
Call for dehumidification
Air exchange
with outside
Open to outside
High
10
On
Standard furnace interlock wiring
THERMOSTAT
TERMINALS
FOUR
WIRES
TWO WIRES
heating only
W
R
G
W
G
Y
THERMOSTAT
TERMINAL
2 WIRES
heating only
wiring
nuts
W
NO
NC
RR
G
C
C
C
YY
Y
FURNACE
24-VOLT
TERMINAL BLOCK
R
4 WIRES
UNIT TERMINAL CONNECTOR
Y
NO C NC I OC OL Y R G B
G
UNIT TERMINAL CONNECTOR
R
NO C NC I OC OL Y R G B
W
Alternate furnace interlock wiring
FURNACE
24-VOLT
TERMINAL BLOCK
TWO WIRES
2 WIRES
COOLING SYSTEM
COOLING SYSTEM
A11215
Fig. 26 - Interlock Wiring
ELECTRIC CONNECTION TO THE
FURNACE
IMPORTANT: Never connect a 120- volt AC circuit to the
terminals of the furnace interlock (standard wiring). Only use the
low voltage class 2 circuit of the furnace blower control.
For a furnace connected to a cooling system
On some older thermostats, energizing the “R” and “G” terminals
at the furnace has the effect of energizing “Y” at the thermostat and
thereby turning on the cooling system. If you identify this type of
thermostat, you must use the ALTERNATE FURNACE
INTERLOCK WIRING.
YELLOW
RED
OPERATING THE ERV WITH THE
EVOLUTION AND INFINITY CONTROL
GREEN
BLACK
The ventilator has four settings in heating mode and three settings
in cooling mode.
Y
R
GB
Heating:
AUTO - the ventilator selects the speed based on indoor humidity
and outdoor temperature. It may cycle on/off every 30 minutes
depending on humidity and outside temperature.
LOW - low speed all of the time.
HIGH - high speed all of the time.
DEHUM - will only turn on if humidity is 3% over setpoint. The
speed is determined by indoor humidity and outdoor temperature.
A98383
Fig. 27 - Typical Wall Control
WALL CONTROL
MODE
CONTROL
CONNECTOR
Cooling:
AUTO - the ventilator selects the speed based on indoor humidity
and outdoor temperature. It may cycle on/off every 30 minutes
depending on humidity and outside temperature.
LOW - low speed all of the time.
HIGH - high speed all of the time.
If the fan speed is set to Auto and the ventilator wants to run, the
fan speed will run at High continuous speed. Otherwise, the fan
will stay at the chosen continuous fan speed.
AIR EXCHANGE
´
ECHANGE
D´AIR
50
60
70
80
MAINTENANCE
% HUM. RELATIVE HUM. EXT. TEMP. EXT.
55%
10C/50F
40
0C/32F
45%
35%
–10C/14F
30
30%
–20C/–4F
25
BLACK
GREEN
RED
20
YELLOW
% D´HUMIDITE´ RELATIVE HUMIDITY
Wiring
Remove top cover assembly from wall control and pass thermostat
wire through hole located on back of control before attaching to
wall. Connect Y, R, G, and B (yellow, red, green and black)
between wall control and ERV circuit board. Following color code
(see Fig. 27 and Fig. 28). Replace top cover assembly.
NOTE: ERV wall control and circuit board operate on 12vdc.
A98410
Fig. 28 - Control Connections
11
Defrost Cycles Tables
Table 5 – ERVXXLHB1200
OUTSIDE TEMPERATURE
Celsius (_C)
Fahrenheit (_F)
- 5
- 15
- 27
23
5
- 17
DEFROST CYCLES (MINUTES)
Operation Time
Between Each
Defrosting
Defrost Cycles
10
10
10
60
30
20
AIRFLOW BALANCING
What You Need to Balance the Unit
S A magnehelic gauge capable of measuring 0 to 0.5 inch of water
(0 to 125 Pa) and 2 plastic tubes.
S The balancing chart of the unit.
Preliminary Stage to Balance the Unit
S Seal all the unit ductwork with tape. Close all windows and doors.
S Turn off all exhaust devices such as range hood, dryer and
bathroom fans.
S Make sure the integrated balancing dampers are fully open.
S Make sure all filters are clean (if it is not the first time the unit is
balanced).
Balancing Procedure
1. Set the unit to high speed.
Make sure that the furnace/air handler blower is ON if the
installation is in any way connected to the ductwork of the
cold air return. If not, leave furnace/air handler blower OFF.
If the outside temperature is below 0_C/32_F, make sure the
unit is not running in defrost while balancing. (By waiting
10 minutes after plugging the unit in, you are assured that
the unit is not in a defrost cycle.)
2. Place the magnehelic gauge on a level surface and adjust it
to zero.
EXTENDED DEFROST CYCLES
Operation Time
Between Each
Defrosting
Defrost Cycles
10
10
10
30
20
15
3. Connect tubing from gauge to EXHAUST air flow pressure
taps (see diagram at right). Be sure to connect the tubes to
their appropriate high/low fittings. If the gauge drops below
zero, reverse the tubing connections.
NOTE: It is suggested to start with the exhaust air flow
reading because the exhaust has typically more restriction
than the fresh air, especially in cases of fully ducted installations or source point ventilation.
Place the magnehelic gauge upright and level. Record equivalent AIR FLOW of the reading according to the balancing
chart.
4. Move tubing to FRESH air flow pressure taps (see diagram). Adjust the fresh air balancing damper until the
FRESH air flow is approximately the same as the EXHAUST air flow. If FRESH air flow is less than EXHAUST
air flow, then go back and adjust the exhaust balancing
damper to equal the FRESH air flow.
5. Secure both dampers in place with a fastening screw.
6. Write the required air flow information on a label and stick
it near the unit for future reference (date, maximum speed
air flows, your name, phone number and business address).
7. Install 4 pressure taps plugs (included in parts bag).
NOTES:
1. Use conversion chart provided with the unit to convert magnehelic gauge readings to equivalent cfm values.
2. The unit is considered balanced even if there is a difference
of 10 cfm (or 5 l/s or 17 m3/h) between the two air flows.
E XHAUST
AIR FLOW
A11217
Fig. 29 - Magnehelic Gauge
F RESH
AIR FLOW
A12305
Fig. 31 - Balancing Procedure
A12307
Fig. 30 - Open Balancing Damper
12
BN
Fan
motor
M1
R
BL
GND GN
HI
O
COM
GY
LO
MED
BN
nc
Motor BK
capacitor
nc
1 2 3 4 5 6
C1
BK
nc
nc
GY
BN
BN
nc
12
GN
BK
R
13
nc
nc
nc
BK
1 2
O
W
BK
W
Critical characteristic.
1 2 3 4 5 6
1 2 3
2
1
1
2
3
J2
J8
F1
W1
W
GN
BK
J10
4 321
See note 1 2 1
J9
3 2 1
M H
5 4 3 2 1
Y BN
Y BN
J12
J11
BK
BL
BN
GY
GN
12
J3
12
54321
J1
R1
Fig. 32 - Wiring Diagram
COLOR CODE
BLACK
O
ORANGE
R
RED
BLUE
W
WHITE
BROWN
Y
YELLOW
GRAY
nc
no connection
GREEN
Line voltage factory wiring
Class 2 low voltage factory wiring
Class 2 low voltage field wiring
Furnace blower interlock
J14-1 : NO
J14-2 : COM
J14-3 : nc
(optional; see notes 3, 5)
Override
switch
(optional; see
notes 3 & 4)
B GR Y
Field wiring
remote control
(see notes 3 & 4)
t˚
Defrost
temperature sensor
DAMPER
ELECTRONIC ASSEMBLY
10
9
8
J13 7
6
5
ICP
4
3
2
1
J14
21
A2
ELECTRONIC
ASSEMBLY A1
1 2 3 4 5
S1
Door interlock switch
T1
(magnetically actuated
reed switch)
24 V
class 2
9.5 V
W
W
class 2
120 V, 60 Hz
J4
J6
BK
120 V
BK
Damper motor
M3
BK
NOTES
1. For continued fire protection. Use specified
UL listed/CSA Certified line fuse.
2. If any of the original wire, as supplied, must
be replaced, use the same equivalent wire.
3. Field wiring must comply with applicable
codes, ordinances and regulations.
4. Remote controls (class 2 circuit) available,
see instruction manual.
5. Furnace fan circuit must be class 2 circuit only.
WIRING DIAGRAM
JU1
1 2 3
120 V
24 V
class 2
9.5 V
class 2
HI
LOW
J8-5
J8-1
J8-2
J8-4
J9-4
J9-1
J9-2
J9-3
F1
J10-2
120 V, 60Hz
Line
CPU
1
2
3
JU1 K2
K2
K3
K1
K5
K4
J11-2
J11-1
J12-5
J12-4
K4 J12-3
J12-2
J12-1
K3
K5
J6-2 nc
J6-1 nc
J4-1
J4-3 nc
A1
LOGIC DIAGRAM
HI
MED
COM
LOW
J2-5
J2-4
J2-3
J2-2
J2-1
Damper motor
J4-2
J14-4
J14-5
J14-6
J14-7
J14-8
J14-9
J14-10
J14-2
J14-1
J14-3
Override
switch
(optional; see
notes 3, 4)
Field wiring
remote
control (see
notes 3, 4)
Furnace
blower
interlock
(optional; see
notes 3, 5)
Door interlock switch
J3-2
J3-1
A2
Fan
motor capacitor
Fan
motor
J10-1
120V, 60Hz
Neutral
A12306
CARE AND MAINTENANCE
!
!
WARNING
UNIT COMPONENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
DO NOT use water to clean core or damage will result. In
addition, before servicing or removing the core inspect the
edges to see if they appear soft (or slightly expanded). This
can be normal and due to moisture in the air. DO NOT handle
or service core until it is dry or air passages can become
damaged and/or closed.
Before installing or servicing system, always turn off, tag and
lockout main power to system. There may be more than 1
disconnect switch.
!
CAUTION
TROUBLESHOOTING
CUT HAZARD
!
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care
and wear appropriate protective clothing and gloves when
handling parts.
Failure to follow this warning could result in personal injury
or death.
Before installing or servicing system, always turn off, tag and
lockout main power to system. There may be more than 1
disconnect switch.
ERV door can be removed by unlatching brief case style latches,
then slide door to the right and remove it from hinges. Door must
be in place and secured shut for proper operation.
Filter
!
Filters in ERV are washable and should be cleaned every 3 months.
Use a vacuum cleaner to remove heaviest portion of accumulated
dust, then wash in lukewarm water. Allow filter to completely dry
before reinstalling. A dirty air filter will cause excessive strain on
blower motor. Never operate unit without a filter. Vacuum out
debris.
In addition, regularly check and clean screens on exterior intake
and exhaust hoods when necessary.
CAUTION
UNIT COMPONENT DAMAGE HAZARD
Failure to follow this caution may result in unit component
damage.
DO NOT clean filters in a dishwasher and DO NOT dry them
with a heating appliance or permanent damage will result.
Blower Motor and Wheel
ERV blower motors are factory lubricated for life. Lubricating
bearings is not recommended. However, inspect and clean any
accumulated dirt and grease from blower motor and wheel
annually.
Cleaning the Core
ERV is equipped with a special energy recovery core which is made
out of paper and allows transfer of sensible and latent energy. The core
should always be only vacuumed every 3 months to remove dust and
dirt that could prevent transfer of energy.
NOTE: The core should only be serviced when outdoor temperature
is between 60F and 75F and it is dry.
WARNING
ELECTRICAL SHOCK HAZARD
Door
!
CAUTION
CAUTION
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care
and wear appropriate protective clothing and gloves when
handling parts.
NOTE: Reference Table 6 Troubleshooting Chart
This can be a quick guide in resolving unit problems. It is also
recommended to review and understand Wall Control Board
Operation and Care and Maintenance sections before continuing.
There are 3 main parts to focus on when troubleshooting ERV unit:
wall control, electronic control board and blower motor.
Wall Control
Typically, the wall control is either good or it is bad. Use Table 1,
2, or 4 to determine if wall control is operating correctly. Use Fig.
27 to check control wire connections.
NOTE: The electronic control board and wall control operate on
12vdc.
Control Board
In addition, outside air thermistor must be connected to control
board for it to operate properly. See Table 8, Temperature/Ohm
Relationship, for valid temperature range.
Blower Motor
The ERV blower motor operates on 115VAC, with 2- speed
operation.
The easiest way to check blower speed operation is to use the
integrated control and initiate a low- speed blower (amber LED)
and high- speed blower operation (green LED).
NOTE: If there is a short circuit or an open circuit at thermistor,
CPU will go into a 10 minute defrost cycle every 20 minutes.
14
Table 6 – Troubleshooting
If the integrated control LED of the unit is flashing, this means the unit sensors detected a problem. See the list below to know where on the
unit the problem occurs.
LED flashes GREEN
(double blink).
LED flashes AMBER.
S Thermistor error.
Replace the thermistor kit
S Damper error.
Go to Problem 6 below.
IMPORTANT: A few diagnosis procedures may require the unit to be in operation while proceeding. Open the unit door and bypass its
magnetic switch by putting the door white magnet on it. Be careful with moving and/or live parts.
PROBLEMS
POSSIBLE CAUSES
1. Unit does not work S The transformer may be defective.
(no LED is lit on the S The circuit board may be defective.
integrated control).
S
S
S
S
2. The damper actuator S
does not work or rotates continuously.
YOU SHOULD TRY THIS
S Check for 24 VAC on J8- 1 and J8- 2.
S Unplug the unit. Disconnect the main NO C NC I OC OL Y R G B
control and the optional control(s) (if need
be). Jump G and B terminals. Plug the unit
back and wait about 10 seconds. If the
motors run on high speed and the damper
opens, the circuit board is not defective.
The unit is unplugged.
S Plug the unit.
The unit door is opened.
S Close unit door
A fuse is blown.
S Inspect fuse on circuit board.
Wrong control connections.
S Try the integrated control.
The damper actuator or the integrated S Unplug the unit. Disconnect the main control and the optional controls(s) (if need
damper port mechanism may be
be).Wait 10 seconds and plug the unit back. Check if the damper opens. If not,
defective (integrated control LED
use a multimeter and check for 24VAC on J12 - 1 and J12 - 2 (in electrical
flashes AMBER and unit is OFF).
compartment). If there is 24VAC, replace the entire port assembly.
NOTE: It is normal to experience a small delay (7- 8 seconds) before detecting
the 24VAC signal at starting- up. This signal will stay during 17- 18 seconds
before disappearing.
S The circuit board or the transformer may S If there is no 24VAC, check for 24VAC between J8 - 1 and J8 - 2. If there is
be defective(integrated control LED
24VAC, replace the circuit board, and if there is no 24VAC, change the
flashes AMBER and unit is OFF) .
transformer.
3. The wall control does S The wires may be in reverse position.
not work OR its indicator flashes.
S The wires may be broken.
S The wire in the wall OR the wall.
S Ensure that the color coded wires have been connected to their work OR its
indicator flashes. appropriate places.
S Inspect every wire and replace any that are damaged.
S Remove the wall control and test it right beside the unit using another control
may be defective. shorter wire. If the wall control works there, change the wire. If
it does not, change the wall control.
S Ensure that the color coded wires have been connected to their appropriate
4. The
dehumidistat S The wires may be in reverse position.
places.
does not work OR
the push button timer S The dehumidified or push button may be S Jump the OL and OC terminals. If the unit
does not work OR its
defective.
switches to high speed, remove the NO C NC I OC OL Y R G B
indicator light does
dehumidistat or push button and test it right
not stay on.
beside the unit using another shorter wire. If
it works here, change the wire. If it doesn’t,
change the dehumidistat or the push button.
5. The motor does not S The circuit board may be defective.
work.
S The motor may be defective.
S Press on the integrated control push button until the unit turns on low speed (the
LED will light AMBER). Using a multimeter, check the voltage on J9- 4 and
J9- 3. Refer to Wiring Diagram. The reading must be 120 VAC. Then set the unit
on high speed by pressing on the integrated control push button one more time
(the LED will light GREEN). Using a multimeter, check the voltage on J9- 4 and
J9- 2. The reading must be 120 VAC Check also between J4- 2 and J4- 1, the
reading must be 120 VAC Refer to Wiring Diagram. Check if the fuse F1 is intact.
If all the readings correspond to the right voltage values, the circuit board is not
defective. If one or both readings are different, change the circuit board.
S Using a multimeter, check for 120VAC for the following speeds: High Speed:
between GREY and ORANGE wires; Low/Medium Speed: between GREY and
RED/BLUE wires. Refer to the Wiring Diagram.
S The motor capacitor may be defective.
S
S
S
S
S Unplug the unit. Check for continuity between Pin 5 on the 6- pin connector
(brown leads) and Pin 3 of the capacitor connector. Also check for continuity
between Pin 4 on the 6- pin connector (brown leads) and Pin 1 of the capacitor
connector. Refer to Wiring Diagram.
The motor is unplugged from inside the S Open the door and ensure that the wire going to the motor is connected.
unit.
The motor is unplugged from the S Check J4 motor connection on circuit board.
electronic board (J4).
There is a problem with the door magnet S Door magnet switch is missing or not in its place.
switch.
JU - 1 jumper is missing or in wrong S Ensure JU- 1 jumper is set on “M” speed.
position
15
PROBLEMS
POSSIBLE CAUSES
6. The defrost cycle S Ice deposits may be hindering the
damper operation.
does not work (the
fresh air duct is S The damper rod or the port damper itself
frozen OR the fresh
may be broken.
air distributed is very
S The damper actuator or circuit board
cold).
may be defective.
S
The 30 - second boot sequence is not
7. The integrated concompleted.
trol push button does
not work.
S The circuit board may be defective.
S The transformer may be defective
YOU SHOULD TRY THIS
S Remove the ice.
S Inspect these parts and replace if necessary.
S See Problem 2.
S See Boot Sequence.
S Check voltage going to circuit board J8- 1 and J8- 2.
S Check for 24 VAC on J8- 1 and J8- 2.
To prevent interior condensation on windows, do not exceed the humidity levels shown in Table 7.
Table 7 – Recommended Humidity Levels
OUTSIDE TEMPERATURE
50F / 10C
32F / 0C
14F / - 10C
- 4F / - 20C
- 22F / - 30C
DOUBLE - PANE WINDOWS
55%
45%
35%
30%
25%
TRIPLE - PANE WINDOWS
65%
55%
45%
45%
35%
Table 8 – Temperature/Ohm Relationship
TEMP.
(F/ C)
- 58/- 50
329.5
TEMP.
(F/ C)
0/- 18
61.54
TEMP.
(F/ C)
55/13
15.90
TEMP.
(F/ C)
112/44
5.080
TEMP.
(F/ C)
167/75
- 56/- 49
310.9
- 54/- 48
293.5
1/- 17
58.68
3/- 16
55.97
57/14
15.28
59/15
14.69
113/45
4.911
169/76
1.869
114/46
4.749
171/77
- 52/- 47
277.2
5/- 15
53.41
61/16
1.816
14.12
116/47
4.593
172/78
1.765
- 51/- 46
262.0
- 49/- 45
247.7
7/- 14
50.98
9/- 13
48.68
63/17
13.58
118/48
4.443
174/79
1.716
64/18
13.06
120/49
4.299
176/80
- 47/- 44
234.3
10/- 12
1.668
46.50
66/19
12.56
122/50
4.160
178/81
1.622
- 45/- 43
221.7
- 44/- 42
209.9
12/- 11
44.43
68/20
12.09
124/51
4.026
180/82
1.577
14/- 10
42.47
70/21
11.63
126/52
3.896
181/83
- 43/- 41
1.533
198.9
16/- 9
40.57
72/22
11.20
128/53
3.771
183/84
1.492
- 40/- 40
188.5
18/- 8
38.77
73/23
10.78
129/54
3.651
185/85
1.451
- 38/- 39
178.5
19/- 7
37.06
75/24
10.38
131/55
3.536
187/86
1.412
- 36- 38
169.0
21/- 6
35.44
77/25
10.00
133/56
3.425
189/87
1.373
- 34/- 37
160.2
23/- 5
33.90
79/26
9.632
135/57
3.318
191/88
1.336
- 32/- 36
151.9
25/- 4
32.44
81/27
9.281
137/58
3.215
192/89
1.301
- 30/- 35
144.1
27/- 3
31.05
82/28
8.944
138/59
3.116
194/90
1.266
- 28/- 34
136.7
28/- 2
29.73
84/29
8.622
140/60
3.020
196/91
1.232
- 27/- 33
129.8
30/- 1
28.48
86/30
8.313
142/61
2.927
198/92
1.200
- 26/- 32
123.3
32/0
27.28
88/31
8.014
144/62
2.838
199/93
1.168
- 24/- 31
117.1
34/1
26.13
90/32
7.728
145/63
2.751
201/94
1.137
- 22/- 30
111.3
36/2
25.03
92/33
7.454
147/64
2.668
203/95
1.108
- 20/- 29
105.7
37/3
23.99
94/34
7.192
149/65
2.588
205/96
1.079
- 18/- 28
100.5
39/4
23.00
96/35
6.940
151/66
2.511
207/97
1.051
- 16/- 27
95.52
41/5
22.05
98/36
6.699
153/67
2.436
208/98
1.024
- 14/- 26
90.84
43/6
21.15
99/37
6.467
155/68
2.364
210/99
0.9984
- 12/- 25
86.43
45/7
20.30
100/38
6.245
156/69
2.295
212/100
0.9731
- 10/- 24
82.26
46/8
19.48
102/39
6.032
158/70
2.228
214/101
0.9484
- 9/- 23
78.33
48/9
18.70
104/40
5.827
160/71
2.163
216/102
0.9246
- 8/- 22
74.61
50/10
17.96
106/41
5.629
162/72
2.100
217/103
0.9014
- 6/- 21
71.10
52/11
17.24
108/42
5.438
164/73
2.039
219/104
0.8789
- 4/- 20
67.77
54/12
16.56
110/43
5.255
165/74
1.980
221/105
0.8572
- 2/- 19
64.57
(k Ohms)
(k Ohms)
Copyright 2012 CAC/BDP. S 7310 W. Morris St. S Indianapolis, IN 46231
(k Ohms)
Edition Date: 11/12
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
16
(k Ohms)
(k Ohms)
1.924
Catalog No:IM- ERVLHB- 01
Replaces: NEW