Specifications | Bard W3LV1 Thermostat User Manual

INSTALLATION
INSTRUCTIONS
WALL MOUNTED
VARIABLE CAPACITY
ENVIRONMENTAL CONTROL UNITS
MODELS
W3RV1
W5RV1
W6RV1
W3LV1
W5LV1
W6LV1
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
Since 1914...Moving ahead just as planned.
Manual :
Supersedes:
File:
Date:
2100-538E
2100-538D
Volume III Tab 16
12-15-11
Manual
Page
2100-538E
1 of 23
Contents
Getting Other Information and Publications
3
Wall Mount General Information
ECU Wall Mount Model Nomenclature ....................
Shipping Damage ....................................................
General ................................................................
Duct Work ................................................................
Filters
................................................................
Fresh Air Intake .......................................................
Condensate Drain ....................................................
4
4
4
5
5
5
5
Installation Instructions
Wall Mounting Information ....................................... 6
Mounting the Unit .................................................... 6
Clearances Required ............................................... 6
Minimum Clearances ............................................... 6
Wiring – Main Power ............................................. 13
Wiring – Low Voltage Wiring ................................. 13
Digital Thermostat/Controller ................................. 13
Wiring Diagram ...................................................... 13
Figures
Figure 1
Figure 2
Figure 3A
Figure 3B
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Fresh Air Damper Assembly ................... 5
Unit Dimensions ...................................... 7
Mounting Instructions .............................. 8
Mounting Instructions .............................. 9
Electric Heat Clearance ........................ 10
Wall Mounting Instructions ..................... 11
Wall Mounting Instructions ..................... 11
Common Wall Mounting Installations .... 12
Fan Blade Setting ................................. 19
Manual 2100-538E
Page
2 of 23
Start Up
General .............................................................. 14
Topping Off System Charge ................................... 14
Safety Practices ..................................................... 14
Important Installer Note ......................................... 15
High Pressure Switch ............................................ 15
Three Phase Scroll Compressor ............................ 15
Phase Monitor ....................................................... 15
Service Hints ......................................................... 15
Digital Controller .................................................... 15
Sequence of Operation .................................. 16 & 17
Lead/Lag Sequence .............................................. 17
Compressor Control Module .................................. 18
Adjustments ........................................................... 18
Pressure Service Ports .......................................... 18
Troubleshooting
Fan Blade Setting Dimensions .............................. 19
Removal of Fan Shroud ......................................... 19
Refrigerant Charge ................................................ 19
Tables
Table 1
Table 2
Table 3
Table 4
Table 5
Table 6
Table 7
Fan Blade Dimensions ..........................
Cooling Pressure ..................................
Electrical Specifications W*R/LV ..........
Recommended Airflow ..........................
Maximum ESP Electric Heat Only ........
Electric Heat .........................................
Vent & Control Options .........................
19
20
21
22
22
22
23
GETTING OTHER INFORMATION AND PUBLICATIONS
These publications can help you install the air
conditioner or heat pump. You can usually find these at
your local library or purchase them directly from the
publisher. Be sure to consult current edition of each
standard.
FOR MORE INFORMATION, CONTACT
THESE PUBLISHERS:
ACCA
Air Conditioning Contractors of America
1712 New Hampshire Ave. N.W.
Washington, DC 20009
Telephone: (202) 483-9370
Fax: (202) 234-4721
ANSI
American National Standards Institute
11 West Street, 13th Floor
New York, NY 10036
Telephone: (212) 642-4900
Fax: (212) 302-1286
National Electrical Code ...................... ANSI/NFPA 70
Standard for the Installation .............. ANSI/NFPA 90A
of Air Conditioning and Ventilating Systems
Standard for Warm Air ...................... ANSI/NFPA 90B
Heating and Air Conditioning Systems
Load Calculation for ............................ ACCA Manual J
Residential Winter and Summer Air Conditioning
Duct Design for Residential .............. ACCA Manual D
Winter and Summer Air Conditioning and Equipment
Selection
ASHRAE American Society of Heating, Refrigeration
and Air Conditioning Engineers, Inc.
1791 Tullie Circle, N.E.
Atlanta, GA 30329-2305
Telephone: (404) 636-8400
Fax: (404) 321-5478
NFPA
National Fire Protection Association
Batterymarch Park
P.O. Box 9101
Quincy, MA 02269-9901
Telephone: (800) 344-3555
Fax: (617) 984-7057
Manufactured under the following
U.S. Patent numbers:
5,485,878; 5,301,744
Manual 2100-538E
Page
3 of 23
WALL MOUNT GENERAL INFORMATION
Environmental Control Unit (ECU) Wall-Mount Model Nomenclature
W
3
R
V
1
–
R
REVISIONS
MODEL
SERIES
Wall-Mount
SYSTEM DESIGN
SPECIAL
FEATURES
Variable Capacity
10
X
R - Right Side
L - Left Side
X
X
X
X - None
Electric
Heat @
Rated
Voltage
ELECTRICAL RATING
R - 230/208-60-1 & 220/200-50-1
S - 230/208-60-3 & 220/200-50-3
T - 460-60-3 & 400-50-3
COLOR OPTIONS
COIL OPTIONS
X
1
4
5
6
A
S
X
1
2
3
-
Beige (Standard)
White
Buckeye Gray
Desert Brown
Dark Bronze
Aluminum
Stainless Steel
-
Standard Copper Tube/Aluminum Fin
Phenolic Coated Indoor Coil
Phenolic Coated Outdoor Coil
Phenolic Coated Indoor & Outdoor Coil
OUTLET OPTIONS
NOMINAL TONS
3 - 3 Ton (37,000 on 60Hz; 33,700 on 50Hz)
5 - 5 Ton (54,000 on 60Hz; 49,200 on 50Hz)
6 - 6 Ton (68,000 on 60Hz; 61,900 on 50Hz)
X
OTHER OPTIONS
KW
(Digital Compressor) ECU
COMPRESSOR &
CONTROLS LOCATION
X
FILTER OPTIONS
VENTILATION OPTIONS
X - Barometric Fresh Air Damper (Standard)
B - Blank-off Plate
X - Front (Standard)
X - One Inch Throwaway (Standard)
W - One Inch Washable
P - Two Inch Pleated
NOTE: Vent options X and B are without exhaust capability. May require separate field supplied barometric relief in building.
SHIPPING DAMAGE
Upon receipt of equipment, the carton should be
checked for external signs of shipping damage. If
damage is found, the receiving party must contact the
last carrier immediately, preferably in writing,
requesting inspection by the carrier’s agent.
GENERAL
The equipment covered in this manual is to be installed
by trained, experienced service and installation
technicians.
The refrigerant system is completely assembled and
charged. All internal wiring is complete.
The unit is designed for use with or without duct work.
Flanges are provided for attaching the supply and return
ducts.
These instructions explain the recommended method to
install the air cooled self-contained unit and the
electrical wiring connections to the unit.
Manual 2100-538E
Page
4 of 23
These instructions and any instructions packaged with
any separate equipment required to make up the entire
air conditioning system should be carefully read before
beginning the installation. Note particularly “Starting
Procedure” and any tags and/or labels attached to the
equipment.
While these instructions are intended as a general
recommended guide, they do not supersede any national
and/or local codes in any way. Authorities having
jurisdiction should be consulted before the installation is
made. See Page 3 for information on codes and
standards.
Size of unit for a proposed installation should be based
on heat loss calculation made according to methods of
Air Conditioning Contractors of America (ACCA). The
air duct should be installed in accordance with the
Standards of the National Fire Protection Association
for the Installation of Air Conditioning and Ventilating
Systems of Other Than Residence Type, NFPA No.
90A, and Residence Type Warm Air Heating and Air
Conditioning Systems, NFPA No. 90B. Where local
regulations are at a variance with instructions, installer
should adhere to local codes.
DUCT WORK
FILTERS
All duct work, supply and return, must be properly sized
for the design airflow requirement of the equipment.
Air Conditioning Contractors of America (ACCA) is an
excellent guide to proper sizing. All duct work or
portions thereof not in the conditioned space should be
properly insulated in order to both conserve energy and
prevent condensation or moisture damage.
A 1-inch throwaway filter is standard with each unit.
The filter slides into position making it easy to service.
This filter can be serviced from the outside by removing
the filter access panel. A 1-inch washable filter and 2inch pleated filter are also available as optional
accessories. The internal filter brackets are adjustable
to accommodate the 2-inch filter by bending two (2)
tabs down on each side of the filter support bracket.
Refer to Maximum ESP of operation Electric Heat
Table 5.
Design the duct work according to methods given by the
Air Conditioning Contractors of America (ACCA).
When duct runs through unheated spaces, it should be
insulated with a minimum of one inch of insulation. Use
insulation with a vapor barrier on the outside of the
insulation. Flexible joints should be used to connect the
duct work to the equipment in order to keep the noise
transmission to a minimum.
For model series W3R/LV, W5R/LV and W6R/LV a 1/4
inch clearance to combustible material for the first three
feet of duct attached to the outlet air frame is required.
See Wall Mounting Instructions and Figures 3A, 3B and
4 for further details.
FRESH AIR INTAKE
All units are built with fresh air inlet slots punched in
the service door.
If the unit is equipped with a fresh air damper assembly,
the assembly is shipped already attached to the unit.
The damper blade is locked in the closed position. To
allow the damper to operate, the maximum and
minimum blade position stops must be installed. See
Figure 1.
All capacity, efficiency and cost of operation
information is based upon the fresh air blank-off plate in
place and is recommended for maximum energy
efficiency.
Ducts through the walls must be insulated and all joints
taped or sealed to prevent air or moisture entering the
wall cavity.
The blank-off plate is available upon request from the
factory and is installed in place of the fresh air damper
shipped with each unit.
Some installations may not require any return air duct. A
metallic return air grille is required with installations not
requiring a return air duct. The spacing between louvers
on the grille shall not be larger than 5/8 inch.
CONDENSATE DRAIN
Any grille that meets with 5/8 inch louver criteria may be
used. It is recommended that Bard Return Air Grille Kit
RG2 through RG5 or RFG2 through RFG5 be installed
when no return duct is used. Contact distributor or
factory for ordering information. If using a return air
filter grille, filters must be of sufficient size to allow a
maximum velocity of 400 fpm.
A plastic drain hose extends from the drain pan at the
top of the unit down to the unit base. There are
openings in the unit base for the drain hose to pass
through. In the event the drain hose is connected to a
drain system of some type, it must be an open or vented
type system to assure proper drainage.
FIGURE 1
FRESH AIR DAMPER
NOTE: If no return air duct is used, applicable
installation codes may limit this cabinet to
installation only in a single story structure.
Manual 2100-538E
Page
5 of 23
INSTALLATION INSTRUCTIONS
WALL MOUNTING INFORMATION
WARNING
1. Two holes for the supply and return air openings
must be cut through the wall as shown in Figures 3A
& 3B.
2. On wood frame walls, the wall construction must be
strong and rigid enough to carry the weight of the
unit without transmitting any unit vibration.
Failure to provide the 1/4 inch clearance
between the supply duct and a combustible
surface for the first 3 feet of duct can result in
fire causing damage, injury or death.
3. Concrete block walls must be thoroughly inspected
to insure that they are capable of carrying the weight
of the installed unit.
MOUNTING THE UNIT
1. These units are secured by wall mounting brackets
which secure the unit to the outside wall surface at
both sides. A bottom mounting bracket, attached to
skid for shipping, is provided for ease of installation,
but is not required.
2. The supply air duct flange and the first 3 feet of
supply air duct require a minimum of 1/4 inch
clearance to combustible material for model series
W3R/LV, W5R/LV and W6R/LV. However, it is
generally recommended that a 1-inch clearance is
used for ease of installation and maintaining the
required clearance to combustible material. See
Figures 3A & 3B for details on opening sizes.
6. Position unit in opening and secure with 5/16 lag
bolts; use 7/8 inch diameter flat washers on the lag
bolts.
7. Secure rain flashing to wall and caulk across entire
length of top. See Figures 3A & 3B.
8. For additional mounting rigidity, the return air and
supply air frames or collars can be drilled and
screwed or welded to the structural wall itself
(depending upon wall construction). Be sure to
observe required clearance if combustible wall.
9. On side-by-side installations, maintain a minimum
of 20 inches clearance on right side to allow access
to control panel and heat strips, and to allow proper
airflow to the outdoor coil. Additional clearance
may be required to meet local or national codes.
3. Locate and mark lag bolt locations and bottom
mounting bracket location. See Figures 3A & 3B.
4. Mount bottom mounting bracket.
5. Hook top rain flashing, attached to front - right of
supply flange for shipping, under back bend of top.
Clearances Required for Service Access
and Adequate Condenser Airflow
MODELS
W3RV1
W3LV1
W5RV1, W6RV1
W5LV1, W6LV1
LEFT SIDE
15"
20"
20"
20"
RIGHT SIDE
20"
15"
20"
20"
NOTE: For side by side installation of two (2) W*RV models there
must be 20" between units. This can be reduced to 15" by using
a W*LV model (left side compressor and controls) for the left unit
and W*R (right side compressor and controls) for right unit.
See Specification Sheet.
Manual 2100-538E
Page
6 of 23
M inimum Clearances Required to
Combustible M aterials
MODELS
W3R/LV1
W5R/LV1
W6R/LV1
SUPPLY AIR DUCT
CABINET
FIRST THREE FEET
1/4"
0"
1/4"
0"
FIGURE 2
Dimensions of Basic Unit for Architectural and I nstallation Requirements (Nominal)
MODEL
WIDTH DEPTH HEIGHT SUPPLY
(W)
(D)
(H)
A
B
RETURN
C
B
E
F
G
I
J
K
L
M
N
O
P
Q
R S1 S2 T
W3RV1
38.200 17.125 70.563 7.88 27.88 13.88 27.88 40.00 10.88 25.75 17.93 26.75 28.75 29.25 27.00 2.75 39.19 22.75 9.14 4.19 12.00 12.00 5.00
W3LV1
W5RV1
42.075 22.432 84.875 9.88 29.88 15.88 29.88 43.88 13.56 31.66 30.00 32.68 26.94 34.69 32.43 3.37 42.88 23.88 10.00 1.44 16.00 16.00 1.88
W5LV1
W6RV1
42.075 22.432 94.875 9.88 29.88 15.88 29.88 43.88 13.56 41.66 30.00 42.68 36.94 44.69 42.43 3.37 42.88 33.88 10.00 1.44 16.00 21.00 1.88
W6LV1
All dimensions are in inches. Dimensional drawings are not to scale.
E
O
D
W*RV
RIGHT
UNIT
Built In
Rain Hood
4° Pitch
W
Heater
Access
Panel
2.13
Side Wall
Mounting
Brackets
(Built In)
A
Electric
Heat
S1
B
C. Breaker/
Disconnect
Access Panel
(Lockable)
I
Top Rain
Flashing
Shipping
Location
Filter Access
Panel
5.75
R
Supply Air Opening
Vent Option
Door
C H
S1
Optional
Electrical
Entrances
Return Air Opening
S1
Ventilation
Air
F
S2
Low Voltage
Electrical
Entrance
G
K
Cond.
Air
Inlet
High Voltage
Electrical
Entrance
Condenser
Air Outlet
L
J
M
S2
P
T
Front View
Side View
Drain
N
Back View
Q
E
O
.44
Electric
Heat
Heater
Access
Panel
2.13
R
W*LV
LEFT
UNIT
D
Side Wall
Mounting
Brackets
(Built In)
Supply Air Opening
S1
S1
A
Optional
Electrical
Entrances
Return Air Opening
L
M
S2
P
W
Filter Access
Panel
Ventilation
Air
Vent Option
Door
C
H
S2
MIS-2921
C. Breaker/
Disconnect
Access Panel
(Lockable)
I
Top Rain
Flashing
Shipping
Location
S1
Built In
Rain Hood
4° Pitch
Bottom Installation
Bracket
5.75
F
Low Voltage
Electrical
Entrance
K
J
Cond.
Air
Inlet
High Voltage
Electrical
Entrance
Condenser
Air Outlet
G
T
Drain
Bottom
Installation
Bracket
2.63
Back View
Side View
Front View
MIS-2922
9.06
Manual 2100-538E
Page
7 of 23
Manual 2100-538E
Page
8 of 23
1
D
E
5"
12"
12"
12"
12"
12"
D
1
42"
3"
4"
Typ.
1"
28"
3 "
4" 8
Typ.
Return Opening
Supply Opening
A
10
1
42"
C
Wall Opening and Hole Location View
7
8"
C
30
1"
14"
E
B
4 1/2 4 9/16 16 7/8
C
REQUIRED DIMENSIONS TO MAINTAIN
RECOMMENDED 1" CLEARANCE FROM
COMBUSTIBLE MATERIALS
B
5 1/4 3 13/16 17 5/8
A
REQUIRED DIMENSIONS TO MAINTAIN
28 1/2 8 1/2
1/4" MIN. CLEARANCE FROM
COMBUSTIBLE MATERIALS
WALL
TOP
HEATER ACCESS
PANEL
SEAL WITH BEAD
OF CAULKING ALONG
ENTIRE LENGTH OF TOP.
FIGURE 3A
W3RV1, W3LV1
MOUNTING INSTRUCTIONS
Right Side View
W*R UNIT SHOWN, W*L UNIT
CONTROLS AND HEATER ACCESS
IS ON OPPOSITE (LEFT) SIDE.
MIS-311 C
IT IS RECOMMENDED THAT A BEAD OF
SILICONE CAULKING BE PLACED BEHIND
THE SIDE MOUNTING FLANGES AND UNDER
TOP FLASHING AT TIME OF INSTALLATION.
NOTES:
RETURN AIR
OPENING
SUPPLY AIR
DUCT
1/4" CLEARANCE ON ALL
FOUR SIDES OF SUPPLY
AIR DUCT IS REQUIRED
FROM COMBUSTABLE
MATERIALS
WALL STRUCTURE
FOAM AIR SEAL
RAIN FLASHING
SUPPLIED
Manual 2100-538E
Page
9 of 23
7
18"
16"
16"
16"
16"
16"
1
1
4"
Typ.
1
1
62"
38"
C
5 1/2
6 1/4
C
Dimension is 21" on W6R and W6L Units.
4"
Typ.
1"
3"
30"
Return Opening
Supply Opening
A
12
10 1/2
B
Wall Opening and Hole Location View
1
1
62"
1
62"
C
32
REQUIRED DIMENSIONS TO MAINTAIN
RECOMMENDED 1" CLEARANCE FROM
COMBUSTIBLE MATERIALS
D
30 1/2
REQUIRED DIMENSIONS TO MAINTAIN
1/4" MIN. CLEARANCE FROM
COMBUSTIBLE MATERIALS
A
2
E
29
29 3/4
7
8"
28"
1
16"
E
B
1 1/4
D
TOP
HEATER ACCESS
PANEL
WALL
SEAL WITH BEAD
OF CAULKING ALONG
ENTIRE LENGTH OF
TOP.
FIGURE 3B
W5RV1, W5LV1, W6RV1, W6LV1
MOUNTING INSTRUCTIONS
Right Side View
MIS-416 C
W*R UNIT SHOWN, W*L UNIT
CONTROLS AND HEATER ACCESS
IS ON OPPOSITE (LEFT) SIDE.
IT IS RECOMMENDED THAT A BEAD OF
SILICONE CAULKING BE PLACED BEHIND
THE SIDE MOUNTING FLANGES AND UNDER
TOP FLASHING AT TIME OF INSTALLATION.
NOTES:
RETURN AIR
OPENING
SUPPLY AIR
DUCT
1/4" CLEARANCE ON ALL
FOUR SIDES OF SUPPLY
AIR DUCT IS REQUIRED
FROM COMBUSTABLE
MATERIALS
WALL STRUCTURE
FOAM AIR SEAL
RAIN FLASHING
SUPPLIED
FIGURE 4
ELECTRIC HEAT CLEARANCE
W3RV1, W3LV1, W5RV1, W5LV1, W6RV1, W6LV1
SIDE SECTION VIEW OF SUPPLY AIR DUCT FOR
WALL MOUNTED UNIT SHOWING 1/4 INCH
CLEARANCE TO COMBUSTIBLE SURFACES.
WARNING
A minimum of 1/4 inch clearance must be maintained between
the supply air duct and combustible materials. This is required
for the first 3 feet of ducting.
It is important to insure that the 1/4 inch minimum spacing is
maintained at all points.
Failure to do this could result in overheating the combustible
material and may result in a fire causing damage, injury or death.
Manual 2100-538E
Page
10 of 23
FIGURE 5
WALL MOUNTING INSTRUCTIONS
WALL STRUCTURE
SEE FIGURES 3A & 3B – MOUNTING INSTRUCTIONS
FACTORY SUPPLIED
RAIN FLASHING.
MOUNT ON UNIT
BEFORE INSTALLATION
SUPPLY AIR
OPENING
SUPPLY AIR
OPENING
SUPPLY AIR
DUCT
RETURN AIR
OPENING
RETURN AIR
OPENING
RETURN AIR
OPENING
BOTTOM MOUNTING
BRACKET. MOUNT ON
WALL BEFORE
INSTALLING UNIT.
WOOD OR STEEL SIDING
CONCRETE BLOCK WALL INSTALLATION
WOOD FRAME WALL INSTALLATION
MIS-548 A
SIDE VIEW
FIGURE 6
WALL MOUNTING INSTRUCTIONS
SEE UNIT DIMENSIONS, FIGURE 2,
FOR ACTUAL DIMENSIONS.
E + 1.000
ATTACH TO TOP
PLATE OF WALL
B
1.000
1.000" CLEARANCE
ALL AROUND DUCT
IF REQUIRED
INTERIOR FINISHED WALL
OVER FRAME
SUPPLY DUCT
OPENING
A
I
1.000" CLEARANCE
ALL AROUND DUCT
IF REQUIRED
RETURN DUCT
OPENING
EXTERIOR FINISH WALL
OVER FRAME
K
2x6
FRAMING MATERIAL
2 x 4'S, 2 x 6'S &/OR
STRUCTURAL STEEL
MIS-549 A
ATTACH TO BOTTOM
PLATE OF WALL
C
CL
THIS STRUCTURAL MEMBER
LOCATED TO MATCH STUD
SPACING FOR REST OF WALL.
A SECOND MEMBER MAY BE
REQUIRED FOR SOME WALLS.
Manual 2100-538E
Page
11 of 23
FIGURE 7
COMMON WALL MOUNTING INSTALLATIONS
SUPPLY DUCT MAY BE LOCATED IN AN ATTIC
OR BELOW CEILING RAFTERS AS SHOWN
RAIN
FLASHING
RAFTERS
RAIN
FLASHING
FINISHED CEILING SURFACE
SUPPLY AIR DUCT
SUPPLY AIR DUCT
W/ GRILLE
FINISHED CEILING SURFACE
RETURN AIR
OPENING W/ GRILLE
RETURN AIR
OPENING W/ GRILLE
OUTSIDE
WALL
RAFTERS
OUTSIDE
WALL
FREE AIR FLOW
NO DUCT
DUCTED SUPPLY
RETURN AT UNIT
SUPPLY DUCT MAYBE LOCATED IN AN ATTIC
OR BELOW CEILING RAFTERS AS SHOWN
RAIN
FLASHING
RAFTERS
SUPPLY DUCT MAYBE LOCATED IN AN ATTIC
OR BELOW CEILING RAFTERS AS SHOWN
RAIN
FLASHING
SUPPLY AIR DUCT
SUPPLY AIR DUCT
LOWERED
CEILING
FINISHED
CEILING SURFACE
OUTSIDE
WALL
RAFTERS
RETURN AIR
SPACE
WALL SLEEVE
CLOSET WALL
FALSE WALL
WALL
SLEEVE
RETURN AIR GRILLE
FALSE WALL INSTALLATION
OUTSIDE
WALL
SUPPLY AIR
GRILLE
FINISHED CEILING
SURFACE
RAISED FLOOR
RETURN AIR
RETURN AIR
GRILLE
CLOSET INSTALLATION
MIS-550 B
Manual 2100-538E
Page
12 of 23
WIRING – MAIN POWER
240V to 208V tap. The acceptable operating voltage
range for the 240 and 208V taps are:
These units are rated for 60/50 Hz operation as follows.
TAP
240
208
NOTE: This system must be controlled only by the Bard
8403-064 Digital Thermostat/Controller that is
supplied with the unit. See below for Wiring and
Pages 16-17 for Operating Sequences.
Electrical
C o de
-R
-S
-T
Vo lts
Hz
P hase
Operating
Vo ltage
R ange
230/208-60-1
220/200-50-1
197 - 253
180 - 242
230/208-60-3
220/200-50-3
460-60-3
400-50-3
197 - 253
180 - 242
414 - 506
360 - 440
Refer to the unit rating plate for wire sizing information
and maximum fuse or “HACR” type circuit breaker
size. Each outdoor unit is marked with a “Minimum
Circuit Ampacity”. This means that the field wiring
used must be sized to carry that amount of current.
Depending on the installed KW of electric heat, there
may be two field power circuits required. If this is the
case, the unit serial plate will so indicate. All models
are suitable only for connection with copper wire. Each
unit and/or wiring diagram will be marked “Use Copper
Conductors Only”. These instructions must be adhered
to. Refer to the National Electrical Code (NEC) for
complete current carrying capacity data on the various
insulation grades of wiring material. All wiring must
conform to NEC and all local codes.
The electrical data lists fuse and wire sizes (75° C
copper) for all models including the most commonly used
heater sizes. Also shown are the number of field power
circuits required for the various models with heaters.
The unit rating plate lists a “Maximum Time Delay
Relay Fuse” or “HACR” type circuit breaker that is to
be used with the equipment. The correct size must be
used for proper circuit protection and also to assure that
there will be no nuisance tripping due to the momentary
high starting current of the compressor motor.
The disconnect access door on this unit may be locked
to prevent unauthorized access to the disconnect. To
convert for the locking capability, bend the tab located
in the bottom left-hand corner of the disconnect opening
under the disconnect access panel straight out. This tab
will now line up with the slot in the door. When shut, a
padlock may be placed through the hole in the tab
preventing entry.
RANGE
253 – 216
220 – 187
NOTE: The voltage should be measured at the field power
connection point in the unit and while the unit is
operating at full load (maximum amperage
operating condition).
DIGITAL THERMOSTAT/CONTROLLER
Terminal
Functio n
Type
Fo rm
+B
MSTP + (not used)
C ommuni cati ons
-A
MSTP - (not used)
C ommuni cati ons
IN4
Outdoor Temperature Sensor
Input
10K OHM Type 3
IN3
Pressure Transducer
Input
0-5 VD C , 0-700 PSIG
GND
Sensor Grounds
Input
IN2
Lockout Alarm
Input
24 C OM
24VAC C om
Power
24V
24VAC
Power
OUT 9
Fan Motor C ontrol
Analog Output
GND 7-9
C ontrol Ground
Analog Output
OUT 8
Unloader Solenoi d C ontrol
Analog Output
0 or 5VD C PWM
OUT 7
Blower Motor C ontrol
Analog Output
0-10VD C
RLY 4
Heater C ontactor #1
Relay Output
Relay
SC 4-6
24VAC to Relay Outputs 4-6
Power
RLY 5
Heater C ontactor #2
Relay Output
RLY 6
(not used)
RLY 3
(not used)
SC 1-3
24VAC to Relay Outputs 1-3
Power
RLY 2
C ompressor C ontactor
Relay Output
RLY 1
(not used)
8403-066 DIGITAL
CONTROLLER
OUT 9
+B
GND 7-9
-A
OUT 8
IN4
OUT 7
IN3
RLY 6
GND
SC 4-6
IN2
24 COM RLY 5
RLY 4
24V
RLY 3
SC 1-3
RLY 2
RLY 1
Relay C losure
0-10VD C
Relay
Relay
UNIT LOW
VOLTAGE
TERMINAL
BLOCK
F
E
Y1
G
W1
W2
Y
R
C
1
See “Start Up” section for important information on
three phase scroll compressor start ups.
2
See Table 3 for Electrical Specifications.
4
3
5
WIRING – LOW VOLTAGE WIRING
230/208V, 1 phase and 3 phase equipment dual primary
voltage transformers. All equipment leaves the factory
wired on 240V tap. For 208V operation, reconnect from
6
7
MIS-2852 C
Manual 2100-538E
Page
13 of 23
START UP
THESE UNITS REQUIRE R-410A
REFRIGERANT AND POLYOL
ESTER OIL.
REMEMBER: When adding R-410A refrigerant, it
must come out of the charging cylinder/tank as a liquid
to avoid any fractionation, and to insure optimal system
performance. Refer to instructions for the cylinder that
is being utilized for proper method of liquid extraction.
GENERAL:
1. Use separate service equipment to avoid cross
contamination of oil and refrigerants.
2. Use recovery equipment rated for R-410A
refrigerant.
3. Use manifold gauges rated for R-410A (800 psi/250
psi low).
WARNING
Failure to conform to these practices
could lead to damage, injury or death.
4. R-410A is a binary blend of HFC-32 and HFC-125.
5. R-410A is nearly azeotropic - similar to R-22 and
R-12. Although nearly azeotropic, charge with
liquid refrigerant.
6. R-410A operates at 40-70% higher pressure than
R-22, and systems designed for R-22 cannot
withstand this higher pressure.
7. R-410A has an ozone depletion potential of zero,
but must be reclaimed due to its global warming
potential.
8. R-410A compressors use polyolester oil.
9. Polyol Ester oil is hygroscopic; it will rapidly absorb
moisture and strongly hold this moisture in the oil.
10. A liquid line dryer must be used - even a deep
vacuum will not separate moisture from the oil.
11. Limit atmospheric exposure to 15 minutes.
12. If compressor removal is necessary, always plug
compressor immediately after removal. Purge with
small amount of nitrogen when inserting plugs.
TOPPING OFF SYSTEM CHARGE
If a leak has occurred in the system, Bard Manufacturing
recommends reclaiming, evacuating (see criteria above),
and charging to the nameplate charge. If done correctly,
topping off the system charge can be done without
problems.
With R-410A, there are no significant changes in the
refrigerant composition during multiple leaks and
recharges. R-410A refrigerant is close to being an
azeotropic blend (it behaves like a pure compound or
single component refrigerant). The remaining
refrigerant charge, in the system, may be used after
leaks have occurred and then “top-off” the charge by
utilizing the pressure charts on the inner control panel
cover as a guideline.
Manual 2100-538E
Page
14 of 23
SAFETY PRACTICES:
1. Never mix R-410A with other refrigerants.
2. Use gloves and safety glasses, Polyol Ester oils can
be irritating to the skin, and liquid refrigerant will
freeze the skin.
3. Never use air and R-410A to leak check; the
mixture may become flammable.
4. Do not inhale R-410A – the vapor attacks the
nervous system, creating dizziness, loss of
coordination and slurred speech. Cardiac
irregularities, unconsciousness and ultimate death
can result from breathing this concentration.
5. Do not burn R-410A. This decomposition
produces hazardous vapors. Evacuate the area if
exposed.
6. Use only cylinders rated DOT4BA/4BW 400.
7. Never fill cylinders over 80% of total capacity.
8. Store cylinders in a cool area, out of direct
sunlight.
9. Never heat cylinders above 125°F.
10. Never trap liquid R-410A in manifold sets, gauge
lines or cylinders. R-410A expands significantly
at warmer temperatures. Once a cylinder or line is
full of liquid, any further rise in temperature will
cause it to burst.
START UP (Continued)
IMPORTANT INSTALLER NOTE
PHASE MONITOR
For improved start up performance wash the indoor coil
with a dish washing detergent.
All units with three phase scroll compressors are
equipped with a 3 phase 60/50 Hz line monitor to
prevent compressor damage due to phase reversal. No
changes required for 60 or 50 Hz operation.
HIGH PRESSURE SWITCH
All W*R/LV wall mounted air conditioner series models
are supplied with a remote reset for the high and low
pressure switch. If tripped, this pressure switch may be
reset by turning the thermostat off then back on again.
THREE PHASE SCROLL COMPRESSOR
START UP INFORMATION
Scroll compressors, like several other types of
compressors, will only compress in one rotational
direction. Direction of rotation is not an issue with
single phase compressors since they will always start
and run in the proper direction.
However, three phase compressors will rotate in either
direction depending upon phasing of the power. Since
there is a 50-50 chance of connecting power in such a
way as to cause rotation in the reverse direction,
verification of proper rotation must be made.
Verification of proper rotation direction is made by
observing that suction pressure drops and discharge
pressure rises when the compressor is energized.
Reverse rotation also results in an elevated sound level
over that with correct rotation, as well as substantially
reduced current draw compared to tabulated values.
Verification of proper rotation must be made at the
time the equipment is put into service. If improper
rotation is corrected at this time, there will be no
negative impact on the durability of the compressor.
However, reverse operation for over one hour may have
a negative impact on the bearing due to oil pump out.
NOTE: If compressor is allowed to run in reverse rotation
for several minutes, the compressor’s internal
protector will trip.
All three phase compressors are wired identically
internally. As a result, once the correct phasing is
determined for a specific system or installation,
connecting properly phased power leads to the same
Fusite terminal should maintain proper rotation
direction.
The direction of rotation of the compressor may be
changed by reversing any two line connections to the
unit.
The phase monitor in this unit is equipped with two
LEDs. If the Y signal is present at the phase monitor
and phases are correct the green LED will light.
If phases are reversed, the red fault LED will be lit and
compressor operation is inhibited.
If a fault condition occurs, reverse two of the supply
leads to the unit. Do not reverse any of the unit factory
wires as damage may occur.
SERVICE HINTS
1. Caution owner/operator to maintain clean air filters
at all times. Also, not to needlessly close off supply
and return air registers. This reduces airflow
through the system, which shortens equipment
service life as well as increasing operating costs.
2. Check all power fuses or circuit breakers to be sure
they are the correct rating.
3. Periodic cleaning of the outdoor coil to permit full
and unrestricted airflow circulation is essential.
DIGITAL CONTROLLER
The W3R/LV1 through W6R/LV1 variable capacity air
conditioners utilize dedicated controllers and
components to optimize this unit for cooling operation
from -40 degrees F up to 131 degrees F (-40 degrees C
to +55 degrees C). These units are dual rated for 200240V operation on both 50 and 60 Hz. Please read the
following sequence of operation before attempting any
troubleshooting or repair. Troubleshooting & repair
procedures will be outlined below & later in this
Manual.
These models use a digital compressor and variable
speed indoor and outdoor motors. The motors and
compressor must be replaced with the exact same
component to maintain the above stated temperature and
voltage ranges of operation. The units are controlled by
a Bard digital thermostat/controller. This thermostat/
controller contains proprietary programming and must
be replaced with the exact same component to ensure
proper operation.
See Controller Quick Start Manual 2100-559 and
Controller Advanced Programming Manual 2100-560
for complete details.
Manual 2100-538E
Page
15 of 23
SEQUENCE OF OPERATION
MODES OF OPERATION
Cool Only Mode:
• Compressor will modulate from 100% down to 20%.
• Compressor will cycle off if thermostat/controller setpoint is reached.
Heat Only Mode:
• Electric heat Stage 1 operates at 1st-stage heating set-point.
• Electric heat Stage 2 (if equipped) operates on 2nd
stage (-2F below heating set-point).
Auto Mode:
• Cooling or heating automatically selected based on
building temperature vs. thermostat/controller setpoints and operates as described above.
CCVC (Continuous Compressor Variable Capacity):
• Compressor will modulate from 100% down to 20%.
• Compressor will not cycle off if thermostat/controller
set-point is reached, and would stay running at the
20% minimum capacity.
• If space temperature drops -2F below cooling set-point
electric heat Stage 1 will then cycle to maintain that
condition.
• If Stage 2 electric heat is installed, and if required, will
cycle at -4F below cooling set-point to maintain that
condition.
• If CCVC is terminated the controller will revert to
Cool or Auto operation.
• CCVC would be an Operating Mode for all
applications where continuous run of the compressor
is a requirement.
Testing & Troubleshooting Mode CCFC (Continuous
Compressor Fixed Capacity):
• This unit must be controlled with the digital thermostat
controller supplied with the unit. To test or
troubleshoot, change system mode to CCFC. This will
ensure unit runs continuously and in full capacity
mode. AHRI ratings are based on this mode of
operation.
CCFC (Continuous Compressor Fixed Capacity):
• The compressor is turned ON and locked ON as long
as the thermostat/controller is in Test Mode 2.
• When in CCFC the compressor does not modulate but
will be locked ON at 100% capacity.
• If space temperature drops -2F below cooling set-point
electric heat Stage 1 will then cycle to maintain that
condition.
• If Stage 2 electric heat is installed, and if required, will
cycle at -4F below cooling set-point to maintain that
condition.
• If CCFC is terminated the controller will revert to
Cool or Auto operation.
• CCFC would not be considered an Operating Mode
and should only be used for system testing as required.
Indoor Blower Operation
The indoor blower speed will modulate with the
compressor operation from 50% to 100% of operation.
Once compressor operation is at 50 or below, percent
airflow will be at 50% and no further reduction of
Manual 2100-538E
Page
16 of 23
airflow will occur. Modulation is accomplished by
modulating a 0-10 volt signal from OUT 7 to the indoor
blower control board which then sends a PWM signal to
the indoor blower motor.
An additional option to maintain airflow at 100% is also
available. This selection is done at the thermostat/
controller under Fan Modes. Default is No for “Always
100%”setting. Change to Yes to disable indoor blower
modulation as described above.
2 LED’s are located on the Blower Control Board. The
Red LED will light anytime 24V is applied to the board
and it is connected to the ECM motor. The Green LED
will flash a series of short and long flashes depending on
the output from the digital thermostat/controller.
Outdoor Fan Motor Operation
The outdoor fan motor speed is varied in response to
outdoor air temperature and pressure. The fan motor
will cycle on and off with the compressor when not in a
CCVC or CCFC. At all times above 122 degrees OAT,
the outdoor fan, OUT 9, will be energized at high speed.
From 122 degrees to 55 degrees the outdoor fan, OUT
9, will be set at normal outdoor airflow. Below 55
degrees the outdoor fan will modulate to maintain a 300
psi head pressure. This will act as a low ambient fan
cycling control. The output may go to zero output to
maintain the 300 PSI. The outdoor ECM motor will be
programmed with a minimum RPM allowed to protect
the bearing system. Any signal that is less than the
percent torque required to maintain the minimum RPM
will cause the motor to shut off. Once head pressure
rises the motor will restart.
These functions are regulated by the digital thermostat/
controller with input from the pressure transducer and
output signal to the Fan Control Board.
2 LED’s are located on the outdoor Fan Control Board.
The Red LED is not active and does not light under any
condition. The Green LED will flash a series of short
and long flashes depending on the output from the digital
thermostat/controller.
Capacity Modulation and High Head Pressure Control
The pressure transducer monitors the high side pressure
providing input to the digital thermostat/controller. It is
powered using a 5Vdc power supply with a digital relay
signaling the compressor unloader solenoid as required.
When the ECU head pressure exceeds 615 PSI based on
outdoor and indoor ambient conditions the compressor
will automatically start to reduce capacity to stay on-line
keeping the pressure at or below 575 PSI. The
thermostat/controller display alternates between OD
temperature and discharge pressure. When compressor
capacity is being reduced due to high pressure conditions
it will also indicate “High Head Pressure Control” mode
on the display. A separate 650 PSI high pressure cutout
switch is also employed as additional safety device. See
Compressor Control Module on following page for more
details.
COOLING SEQUENCE
Compressor Operation
The cooling capacity of the WV series is controlled by
loading or unloading the compressor. On a call for
cooling, the unloader solenoid is energized for one
second to ensure pressure equalization in the
compressor. The compressor contactor, RLY 2, is then
energized and the compressor will start. A PI control
loop then calculates the compressor capacity needed to
reach set point and modulates the compressor .
Modulation range is from 20% to 100% capacity.
Modulation is accomplished by a pulse width modulated
signal from OUT 8 which energizes the solid state relay
(SSR) and energizes or de-energizes the unloader
solenoid. The required compressor capacity is
calculated every 15 seconds.
20% load means 0 VDC for 3.0 seconds and 5 VDC for
12.0 seconds from OUT 8.
30% load means 0 VDC for 4.5 seconds and 5 VDC for
10.5 seconds from OUT 8.
40% load means 0 VDC for 6.0 seconds and 5 VDC for
9.0 seconds from OUT 8.
50% load means 0 VDC for 7.5 seconds and 5 VDC for
7.5 seconds from OUT 8.
60% load means 0 VDC for 9.0 seconds and 5 VDC for
6.0 seconds from OUT 8.
70% load means 0 VDC for 10.5 seconds and 5 VDC
for 4.5 seconds from OUT 8.
80% load means 0 VDC for 12.0 seconds and 5 VDC
for 3.0 seconds from OUT 8.
90% load means 0 VDC for 13.5 seconds and 5 VDC
for 1.5 seconds from OUT 8.
100% load means 0 VDC for 15 seconds and 5 VDC for
0.0 seconds from OUT 8.
Outdoor Temperature Sensor
A sensor probe projects out the bottom of the ECU
control box into the outdoor section, and this provides
input for the outdoor fan sequences below 55F and
above 115F described under Outdoor Fan Motor
Operation.
Discharge Temperature Sensor
This sensor is mounted on the compressor discharge line
and protects the compressor against overheating. It
opens at 250F and closes at 200F.
HEATING SEQUENCE
On a call for heating, if the space temperature falls 1°F
below setpoint, the first stage of heating, RLY 4, will
cycle ON. If the space temperature falls 3°F below
setpoint, the second stage of heating, RLY 5, will cycle
ON. Indoor Blower airflow is maintained at the Rated
unit airflow at all times during heating.
C o ntro l
D evice
N o rmal
Abno rmal
Indoor
Motor
Blower
C ontrol
Board
Red LED li t, Green LED
flashes long and short
flashes when Fan i s called
for, 2-10Vdc from Si gnal to
C ommon. Jumper i s on P.
No Red LED , and no Green
flashes when 2-10Vdc i s
present from Si gnal to
C ommon. Jumper i s on P.
Outdoor
Motor
F an
C ontrol
Board
Red LED not li t. Green long
and short flashes when 210Vdc present from Si gnal
to C ommon on board.
Jumper i s on P.
Red LED li t, and no Green
flashes when 2-10Vdc i s
present from Si gnal to
C ommon. Jumper i s on P.
5V dc
Power
Supply
Red LED li t when 24Vac
present. 5Vdc present at
soli d Red and soli d Black
wi res. Both jumpers on Half.
3A 250V fuse.
Red LED not li t. 5Vdc not
present at soli d Red and
soli d Black wi res.
Both jumpers on Half.
C heck 3A fuse.
LEAD/LAG SEQUENCE
The digital controllers can be used for dual units used in
a redundant application by using the scheduling function
as follows:
1. The controllers should be mounted side by side so
that they are in the same temperature zone.
2. The time setting on both controllers need to be
synchronized to the same time of day. NOTE: there
is a 72-hour time retention if power is removed. If
power off-time exceeds 72 hours, the time clock in
each device must be reset to match. The exact time
is not important as long as both controllers are set
the same unless it is critical to control the time of
day when the units swap operating positions.
3. Set one controller #1 to be Occupied for a 12-hour
period and Unoccupied for the other 12-hour period.
Set controller #2 so that it is exactly the opposite.
Unoccupied for the 12-hour period when #1 is
Occupied and Occupied when #1 is Unoccupied.
4. Set Occupied cooling setpoint the same for each
controller, and Unoccupied the same for each. 4°F
difference is suggested.
5. Set controllers to “Auto” mode of operation.
Example:
1.
Both Unit #1 and #2 have Occupied setpoint of
74°F and Unoccupied setpoint of 78°F
2.
Unit #1 set for Occupied from 1:00 a.m. to 1:00
p.m. & Unoccupied from 1:00 p.m. to 1:00 a.m.
3.
Unit #2 set for Unoccupied from 1:00 a.m. to
1:00 p.m. & Occupied from 1:00 p.m. to 1:00 a.m.
4.
Every 12 hours the units will swap position as
being the lead unit, and the lag unit is available
for back up operation at the higher temperature
should the situation ever arise.
Manual 2100-538E
Page
17 of 23
COMPRESSOR CONTROL MODULE
Alarm Relay Output
The compressor control module is standard on all
models covered by this manual. The compressor control
module is an anti-short cycle/lockout timer with high
and low pressure switch monitoring and alarm relay
output.
Alarm terminal is output connection for applications
where alarm relay is employed. This terminal is
powered whenever the compressor is locked out due to
HPC or LPC sequences as described.
Adjustable Delay On Make And Break Timer
On initial power up or anytime power is interrupted to
the unit, the delay on make period begins, which will be
2 minutes plus 10% of the delay on break setting. When
the delay on make is complete and the high pressure
switch and low pressure switch is closed, the compressor
contactor is energized. Upon shutdown, the delay on
break timer starts and prevents restart until the delay on
break and delay on make periods have expired.
During routine operation of the unit with no power
interruptions, the compressor will operate on demand
with no delay.
High Pressure Switch and Lockout Sequence
If the high pressure switch opens, the compressor
contactor will de-energize immediately. The lockout
timer will go into a soft lockout and stay in soft lockout
until the high pressure switch closes and the delay on
break time has expired. If the high pressure switch
opens again in this same operating cycle, the unit will go
into manual lockout condition and the alarm relay circuit
will energize. Recycling the wall thermostat resets the
manual lockout.
Low Pressure Switch, Bypass, and Lockout
Sequence
If the low pressure switch opens for more than 120
seconds, the compressor contactor will de-energize and
go into a soft lockout. Regardless the state of the low
pressure switch, the contactor will reenergize after the
delay on make time delay has expired. If the low
pressure switch remains open, or opens again for longer
than 120 seconds, the unit will go into manual lockout
condition and the alarm relay circuit will energize.
Recycling the wall thermostat resets the manual lockout.
Manual 2100-538E
Page
18 of 23
NOTE: Both high and low pressure switch controls are
inherently automatic reset devices. The high
pressure switch and low pressure switch cut out
and cut in settings are fixed by specific air
conditioner unit model. The lockout features,
both soft and manual, are a function of the
Compressor Control Module.
ADJUSTMENTS
Adjustable Delay on Make and Delay on Break
Timer
The potentiometer is used to select Delay on Break time
from 30 seconds to 5 minutes. Delay on Make (DOM)
timing on power-up and after power interruptions is
equal to 2 minutes plus 10% of Delay on Break (DOB)
setting:
0.5 minute
1.0 minute
2.0 minute
3.0 minute
4.0 minute
5.0 minute
(30 seconds)
(60 seconds)
(120 seconds)
(180 seconds)
(240 seconds)
(300 seconds)
DOB = 123
DOB = 126
DOB = 132
DOB = 138
DOB = 144
DOB = 150
second DOM
second DOM
second DOM
second DOM
second DOM
second DOM
During routine operation of the unit with no power
interruptions the compressor will operate on demand
with no delay.
Typical Settings for Dual Unit Installation:
Unit 1: DOB set at 2 minutes, and DOM is 132 seconds
Unit 2: DOB set at 4 minutes, and DOM is 144 seconds
PRESSURE SERVICE PORTS
High and low pressure service ports are installed on all
units so that the system operating pressures can be
observed. A pressure table can be found later in the
manual covering all models. It is imperative to match
the correct pressure table to the unit by model number.
See Table 2.
TROUBLESHOOTING
REMOVAL OF FAN SHROUD
FAN BLADE SETTING DIMENSIONS
Shown in Figure 8 is the correct fan blade setting for
proper air delivery across the outdoor coil. Refer to
Table 1 for unit specific dimension.
Any service work requiring removal or adjustment in
the fan and/or motor area will require that the
dimensions below be checked and blade adjusted in or
out on the motor shaft accordingly.
1. Disconnect all power to the unit.
2. Remove the screws holding both grilles, one on each
side of unit, and remove grilles.
3. Unwire condenser fan motor.
4. Remove the bolts and nuts holding the condenser fan
motor bracket to the fan shroud.
5. Slide the condenser fan motor and bracket to the rear
of the condenser section.
FIGURE 8
FAN BLADE SETTING
6. Remove screws holding fan shroud to condenser and
bottom support plate.
7. Slide fan shroud out the left side of the unit.
8. Reverse steps to install.
R-410A
REFRIGERANT CHARGE
This unit was charged at the factory with the quantity of
refrigerant listed on the serial plate. AHRI capacity and
efficiency ratings were determined by testing with this
refrigerant charge quantity.
MIS-1724
TABLE 1
FAN BLADE DIMENSION
Mo del
D imensio n
A
W3RV1
W3LV1
1.25"
W5RV1
W5LV1
1.75"
W6RV1
W6LV1
1.75"
The following pressure tables show nominal pressures
for the units. Since many installation specific situations
can affect the pressure readings, this information should
only be used by certified technicians as a guide for
evaluating proper system performance. They shall not
be used to adjust charge. If charge is in doubt, reclaim,
evacuate and recharge the unit to the serial plate charge.
Manual 2100-538E
Page
19 of 23
TABLE 2
COOLING PRESSURE TABLE
Air Temperature Entering Outdoor Coil °F (°C)
Model
W3RV
W3LV
W5RV
W5LV
W6RV
W6LV
D.B/W.B.
1
75
80
85
90
95
100
105
110
115
120
125
131
Pressure (23.9) (26.7) (29.4) (32.2) (35.0) (37.8) (40.6) (43.3) (46.1) (48.9) (51.7) (55.0)
75 / 62F
(23.9/16.7C)
Low S i de
High Side
128
355
127
373
127
394
127
416
128
442
129
469
130
498
132
530
135
565
80 / 67F
(26.7/19.4C)
Low S i de
High Side
137
364
136
383
136
404
136
427
139
444
139
481
139
511
141
544
144
579
85 / 72
(29.4/22.2C)
Low S i de
High Side
142
377
141
396
141
418
141
442
142
469
143
498
144
529
146
563
149
599
75 / 62F
(23.9/16.7C)
Low S i de
High Side
125
336
128
358
130
380
132
403
134
427
136
451
137
478
137
504
138
531
80 / 67F
(26.7/19.4C)
Low S i de
High Side
134
345
137
367
139
390
141
413
143
438
145
463
146
490
147
517
148
545
85 / 72
(29.4/22.2C)
Low S i de
High Side
139
357
142
380
144
404
146
427
148
453
150
479
151
507
152
535
153
564
75 / 62F
(23.9/16.7C)
Low S i de
High Side
113
344
113
361
114
381
115
404
117
430
118
459
120
490
122
526
124
564
80 / 67F
(26.7/19.4C)
Low S i de
High Side
121
353
121
370
122
391
123
414
125
441
126
471
128
503
130
539
133
578
85 / 72
(29.4/22.2C)
Low S i de
High Side
125
365
125
383
126
405
127
428
129
456
130
487
132
521
135
558
138
598
S ee
Note
2
Low side pressure ± 4 PSIG
High side pressure ± 10 PSIG
Tables are based upon rated CFM (airflow) across the evaporator coil. If there is any doubt as to correct operating charge
being in the system, the charge should be removed, system evacuated and recharged to serial plate charge weight.
NOTE 1: Return air temperature at 50% R.H.
NOTE 2: Units rated to 131F (55C) outdoor temperature, but higher fan speeds and automatic modulation of the
compressor due to pressure control make pressure readings above 115°F very unstable. Pressure table is
based on low speed condenser fan operation. Fan speed increases above 115°F. Check pressures on unit
at outdoor ambient below 115°F. Set thermostat at least 3° below current room temperature to ensure 100%
comp operation for purpose of pressure testing.
Manual 2100-538E
Page
20 of 23
Manual 2100-538E
Page
21 of 23
460-60-3
400-50-3
230/208-60-3
220/200-50-3
460-60-3
400-50-3
230/208-60-3
220/200-50-3
230/208-60-1
220/200-50-1
460-60-3
400-50-3
230/208-60-3
220/200-50-3
230/208-60-1
220/200-50-1
1
1
1 or 2
1
1
1
1
1
1
1
1 or 2
1 or 3
1
1
2
1
1
1
1
2
2
1
1
1
No. Field
Power
Circuits
28
54
80
19
37
46
12
25
29
39
91
143
28
55
N/A
18
32
41
42
N/A
N/A
22
36
45
3 Minimum
Circuit
Ampacity
35
60
80
30
40
50
15
25
30
60
100
150
40
60
N/A
25
35
45
60
N/A
N/A
35
45
50
1 Maximum
Overcurrent
Protection
8
6
4
10
8
8
14
10
10
8
3
10
8
6
N/A
10
8
8
8
N/A
N/A
8
8
8
2 Field
Power
Wire Size
10
10
8
10
10
10
14
10
10
10
8
6
10
10
N/A
10
10
10
10
N/A
N/A
10
10
10
2 Ground
Wire
Dual Circuit
3 Minimum
1 Maximum
Circuit
Overcurrent Protection
Ampacity
Ckt. A Ckt. B Ckt. C Ckt. A Ckt. B Ckt. C
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
54
26
N/A
60
30
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
39
52
N/A
60
60
N/A
39
52
52
60
60
60
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
55
28
N/A
60
30
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
42
28
N/A
60
30
N/A
42
55
N/A
60
60
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
2 Field
Power
Wire Size
Ckt. A Ckt. B Ckt. C
N/A
N/A
N/A
N/A
N/A
N/A
6
10
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
8
6
N/A
8
6
6
N/A
N/A
N/A
N/A
N/A
N/A
6
10
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
8
10
N/A
8
6
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Ckt. A
N/A
N/A
10
N/A
N/A
N/A
N/A
N/A
N/A
N/A
10
10
N/A
N/A
10
N/A
N/A
N/A
N/A
10
10
N/A
N/A
N/A
Ckt. B
N/A
N/A
10
N/A
N/A
N/A
N/A
N/A
N/A
N/A
10
10
N/A
N/A
10
N/A
N/A
N/A
N/A
10
10
N/A
N/A
N/A
2 Ground
Wire Size
Ckt. C
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
10
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
IMPORTANT: While this electrical data is presented as a guide, it is important to electrically connect properly sized fuses and conductor wires in accordance with the National Electrical Code and all local codes.
* Top outlet supply option is available only factory installed and only on the selected models.
Caution: When more than one field power circuit is run through one conduit, the conductors must be derated. Pay special attention to note 8 of Table 310 regarding Ampacity Adjustment Factors when more than
three (3) current carrying conductors are in a raceway.
1 Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors.
2 Based on 75C copper wire. All wiring must conform to the National Electrical Code and all local codes.
3 These “Minimum Circuit Ampacity” values are to be used for sizing the field power conductors. Refer to the National Electrical code (latest version), Article 310 for power conductor sizing.
W3RV1 / W3LV1-R0Z
R05
R10
W3RV1 / W3LV1-S0Z
S 06
S 09
W3RV1 / W3LV1-T0Z
T09
T12
W5RV1 / W5LV1-R0Z
R10
R20
W5RV1 / W5LV1-S0Z
S 09
S 18
W5RV1 / W5LV1-T0Z
T09
T18
W6RV1 / W6LV1-S0Z
S 09
S 18
W6RV1 / W6LV1-T0Z
T09
T15
Model
Electrical
Rating:
Volts
Hz
Phase
Electrical Specifications — W*RV / W*LV Series
TABLE 3
TABLE 4
RECOMMENDED AIRFLOW
Mo del
R ated
C FM *
R ated
ESP *
R eco mmended
Airflo w R ange
W3R/LV
1100
.15
1100 - 550
W5R/LV
1700
.20
1700 - 85 0
W6R/LV
1700
.20
1700 - 85 0
* Rated CFM and ESP on high speed tap.
TABLE 5
MAXIMUM ESP OF OPERATION
ELECTRIC HEAT ONLY
W3
W5, W6
FRONT
FRONT
High
High
-A0Z
-A05
-A10
.50
.50
.50
.50
.50
.50
-B0Z
-B06
-B09
.50
.50
.50
.50
.50
.50
-C0Z
-C09
-C12
.50
.50
.45
.50
.50
.50
Model
Values shown are for units equipped with standard 1-inch throwaway filter or 1-inch washable filter.
Derate ESP by .15 for 2-inch pleated filters.
TABLE 6
ELECTRIC HEAT
Models
240V-1
208V-1
KW
Amps
B TU H
Amps
B TU H
4
16.7
13650
14.4
10240
5
20.8
17065
18.1
12800
6
8
33.3
27300
28.8
41.6
34130
36.2
208V-3
Amps
B TU H
Amps
B TU H
Amps
B TU H
14.4
20500
12.5
15360
7.2
20500
21.7
30600
18.7
23030
10.8
30700
14.4
40950
18.0
51200
25600
12
15
62.5
51250
54.0
38400
18
20
Manual 2100-538E
Page
22 of 23
83.2
68260
72.1
460V-3
20475
9
10
240V-3
51200
36.2
51200
31.2
38400
43.3
61430
37.5
46100
D escriptio n
W5R/LV
W6R/LV
P art N umber
W3R/LV
TABLE 7
VENT & CONTROL OPTIONS
C MC -15
Start Ki t (230V 1-Phase)
X
X
BFAD -3
Barometri c Fresh Ai r D amper - Standard
X
BOP-3
Blank Off Plate
X
BFAD -5
Barometri c Fresh Ai r D amper - Standard
X
X
BOP-5
Blank Off Plate
X
X
Manual 2100-538E
Page
23 of 23
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