Bard WA611 User manual

Manual 2100-425B
Page 1 of 21
Manual No.: 2100-425B
Supersedes: 2100-425A
File: Volume III, Tab 16
Date: 08-01-07
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
Since 1914...Moving ahead, just as planned.
Models: WA611
WA701-B
WA701-C
WA702-A
WA721
WALL MOUNTED PACKAGED
AIR CONDITIONER
INSTALLATION
INSTRUCTIONS

Manual 2100-425B
Page 2 of 21
CONTENTS
Figures
Figure 1 Unit Dimensions..................................... 5
Figure 2 Blower Damper Assembly...................... 8
Figure 3 Mounting Instructions........................... 10
Figure 4 Wall-Mounting Instructions .................. 12
Figure 5 Wall-Mounting Instructions .................. 12
Figure 6 Common Wall-Mounting Instructions ... 13
Figure 7 Electric Heat Clearances ..................... 14
Figure 8 Low Voltage Wiring.............................. 15
Figure 9 Start-Up Label...................................... 16
Figure 10 Fan Blade Setting ................................ 19
Tables
Table 1 Electric Heat Table................................. 4
Table 2 Dimensions of Basic Unit....................... 5
Table 3 Electrical Specifications ......................... 6
Table 4 Operating Voltage Range .....................11
Table 5 Thermostat Wire Size ...........................11
Table 6 Wall Thermostat....................................11
Table 7 Fan Blade Dimensions......................... 19
Table 8 Suction Line Temperatures .................. 19
Table 9 CFM and ESP...................................... 19
Table 10 Indoor Blower Performance ................. 19
Table 11 Maximum ESP of Operation
Electric Heat Only ................................ 20
Table 12 Cooling Pressure ................................. 20
Table 13 Optional Accessories ........................... 21
Getting Other Information and Publications
For more information, contact these publishers:...... 3
Wall Mount General Information
Air Conditioner Wall Mount Model Nomenclature.... 4
Shipping Damage .................................................... 7
General ............................................................... 7
Duct Work ............................................................... 7
Filters ............................................................... 8
Fresh Air Intake ....................................................... 8
Condensate Drain.................................................... 8
Installation Instructions
Wall Mounting Information....................................... 9
Mounting the Unit .................................................... 9
Typical Installations ................................................. 9
Wiring – Main Power ..................................... 9 & 10
Wiring – Low Voltage Wiring ................................11
Low Voltage Connections .......................................11
Start Up
Important Installer Note ......................................... 16
Crankcase Heaters................................................ 16
High Pressure Switch ............................................ 16
Three Phase Scroll Compressor Start Up
Information............................................................. 16
Service Hints ......................................................... 17
Sequence of Operation.......................................... 17
Compressor Control Module.................................. 17
Adjustments ........................................................... 18
Phase Monitor ....................................................... 18
Pressure Service Ports.......................................... 18
Troubleshooting
Fan Blade Setting Dimensions .............................. 19
Removal of Fan Shroud......................................... 19
Refrigerant Charge ................................................ 19
Pressure Chart ...................................................... 20
Optional Accessories ............................................. 21

Manual 2100-425B
Page 3 of 21
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.
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 or
Residential Winter and Manual N
Summer Air Conditioning
Low Pressure, Low Velocity..........ACCA Manual D or
Duct System Design for Winter Manual Q
and Summer Air Conditioning
FOR MORE INFORMATION, CONTACT
THESE PUBLISHERS:
ACCA Air Conditioning Contractors of America
1712 New Hampshire Ave. N.W.
Washington, DC 20009
Telephone: [phone]
Fax: [phone]
ANSI American National Standards Institute
11 West Street, 13th Floor
New York, NY 10036
Telephone: [phone]
Fax: [phone]
ASHRAE American Society of Heating Refrigerating,
and Air Conditioning Engineers, Inc.
1791 Tullie Circle, N.E.
Atlanta, GA 30329-2305
Telephone: [phone]
Fax: [phone]
NFPA National Fire Protection Association
Batterymarch Park
P.O. Box 9101
Quincy, MA 02269-9901
Telephone: [phone]
Fax: [phone]

Manual 2100-425B
Page 4 of 21
WALL MOUNT GENERAL INFORMATION
AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE
WA 70 1 – B 09 X X X X X J
TABLE 1
ELECTRIC HEAT TABLE
sledoM A-116AWB-116AWC-116AW
1-V0421-V8023-V0423-V8023-V064
WKSPMAHUTBSPMAHUTBSPMAHUTBSPMAHUTBSPMAHUTB
0.5
8.02004,811.81001,41------------------
0.8
3.33006,828.82008,12------------------
0.9
------------7.12009,137.81053,428.01000,23
0.01
6.14054,532.63009,62------------------
sledoM
A-207AW B-107AW B-127AW C-107AW C-127AW
1-V0421-V8023-V0423-V8023-V064
WKSPMAHUTBSPMAHUTBSPMAHUTBSPMAHUTBSPMAHUTB
0.5
8.02050,711.81008,21------------------
0.9
------------7.12006,037.81030,328.01007,03
0.01
6.14031,432.63006,52------------------
0.51
5.26002,151.45004,832.63002,152.13004,833.71000,74
0.81
------------3.34034,165.73001,64------
0.02
2.38062,861.27002,15------------------
VOLTS & PHASE
A – 230/208-1
B – 230/208/60-3
C – 460/60-3
KW
00 – No KW
0Z – No KW
w/Circuit Breaker
or Pull Disconnect
05 – 5 KW
09 – 9 KW
10 – 10 KW
15 – 15 KW
18 – 18 KW
VENTILATION OPTIONS
X – Barometric Fresh Air Damper (Standard)
B – Blank-off Plate
M – Motorized Fresh Air Damper
V – Commercial Room Ventilator - Motorized with Exhaust
E – Economizer (Internal) - Fully Modulating with Exhaust
R – Energy Recovery Ventilator - with Exhaust
COLOR OPTIONS
X – Beige (Standard)
1 – White
OUTLET OPTIONS
X – Front (Standard)
COIL OPTIONS
X – Standard
1 – Phenolic Coated Evaporator
2 – Phenolic Coated Condenser
3 – Phenolic Coated Evaporator
and Condenser
CONTROL MODULES
J – Standard on all
Models
NOTE: For 0 KW and circuit breakers (230/208 V) or pull disconnects (460 V) applications, insert 0Z in the KW field of model number.
MODEL NUMBER
CAPACITY
61 – 5 Ton
70 – 6 Ton
72 – 6 Ton
REVISION
FILTER OPTIONS
X – 1-Inch Throwaway
(Standard)
W– 1-Inch Washable
P – 2-Inch Pleated

Manual 2100-425B
Page 5 of 21
TABLE 2
DIMENSIONS OF BASIC UNIT FOR ARCHITECTURAL AND INSTALLATION REQUIREMENTS (NOMINAL)
tinU htdiWWhtpeD DthgieH H
ylppuSnruteR
EFGI J KLMNOPQABCB
116AW 07AW 127AW 244/1-228/7-498/7-98/7-928/7-518/7-928/7-34918/5-140361/11-24734/3-442/1-244/1-3348/7-3301
All dimensions in inches.
FIGURE 1
UNITDIMENSIONS

Manual 2100-425B
Page 6 of 21
TABLE 3
ELECTRICALSPECIFICATIONS
SLEDOMdetaR
fo.oN rewoP stiucriC
TIUCRICELGNIS TIUCRICLAUD
3
muminiM tiucriC yticapmA
1
mumixaM revO tnerruC noitcetorP
2
dleiF eriW eziS
2
dnuorG eriW eziS
3
tiucriCmuminiM yticapmA
1
revOmumixaM tnerruC noitcetorP
2
eziSeriWdleiF
2
eziSeriWdnuorG
ATKCBTKCATKCBTKCATKCBTKCATKCBTKC
Z0A,00A-116AW 50A- 80A- 01A-
1-802/302
1 1 1 1
34347485
05050606
8 8 8 6
01010101
ANANANAN
ANANANAN
ANANANAN
ANANANAN
ANANANAN
ANANANAN
ANANANAN
ANANANAN
Z0B,00B-116AW 90B- 3-802/032 1
19233 5454 8
80101 ANAN ANAN ANAN ANAN ANAN ANAN ANAN ANAN
Z0C,00C-116AW 90C- 3-064 1
15171 0202 2121 2121 ANAN ANAN ANAN ANAN ANAN ANAN ANAN ANAN
Z0A,00A-207AW 50A- 01A- 51A- 02A-
1-802/302
1 1 12ro1 2ro1
84849558 011
06060609 011
8 8 6
4
2
010101
8 6
ANANAN9595
ANANAN6225
ANANAN0606
ANANAN0306
ANANAN
6 6
ANANAN01
6
ANANAN0101
ANANAN0101
Z0B,00B-107AW 90B- 51B- 81B-
3-802/032
1 1 1 1
63632506
05050606
8 8 6 6
01010101
ANANANAN
ANANANAN
ANANANAN
ANANANAN
ANANANAN
ANANANAN
ANANANAN
ANANANAN
Z0C,00C-107AW 90C- 51C- 3-064 1
1 1
717162
525203
212101
212101
ANANAN
ANANAN
ANANAN
ANANAN
ANANAN
ANANAN
ANANAN
ANANAN
Z0B,00B-127AW 90B- 51B- 81B-
3-802/032
1 1 1 1
63632506
05050606
8 8 6 6
01010101
ANANANAN
ANANANAN
ANANANAN
ANANANAN
ANANANAN
ANANANAN
ANANANAN
ANANANAN
Z0C,00C-127AW 90C- 51C- 3-064 1
1 1
717162
525203
212101
212101
ANANAN
ANANAN
ANANAN
ANANAN
ANANAN
ANANAN
ANANAN
ANANAN
1Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors. 2Based on 75°C copper wire. All wiring must conform to the National Electric Code (NEC) and all local codes. 3These “Minimum Circuit Ampacity” values are to be used for sizing the field power conductors. Refer to the National Electric Code (latest version), Article 310
for power conductor sizing.
CAUTION: When more than one filed power conductor circuit is run through one conduit, the conductors must be derated. Pay special attention to Note *
of Table 310 regarding Ampacity Adjustment Factors when more than 3 conductors are in a raceway.

Manual 2100-425B
Page 7 of 21
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.
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.
DUCTWORK
All duct work, supply and return, must be properly sized
for the design air flow 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.
Refer to Table 11 for maximum static pressure available
for duct design.
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 1 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.
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 3,
4, 5 and 6 for further details.
Ducts through the walls must be insulated and all joints
taped or sealed to prevent air or moisture entering the
wall cavity.
Any grille that meets the 5/8 inch louver criteria, may be
used. It is recommended that Bard Return Air Grille Kit
RG-2 through RG-5 or RFG-2 through RFG-5 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.
NOTE: If no return air duct is used, applicable
installation codes may limit this cabinet to
installation only in a single story structure.
CAUTION
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 inches.

Manual 2100-425B
Page 8 of 21
FIGURE 2
BLOWERDAMPER ASSEMBLY
FILTERS
A 1-inch throwaway filter is supplied with each unit.
The filter slides into position making it easy to service.
This filter can be serviced from the outside by removing
the service door. A 1-inch washable filter and 2-inch
pleated filter are also available as optional accessories.
The internal filter brackets are adjustable to
accommodate the 2-inch filter by bending down the tabs
to allow spacing for the 2-inch filters.
FRESH AIR INTAKE
All units are built with fresh air inlet slots punched in
the service panel.
If the unit is equipped with the 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 minium blade position stops must be installed. See
Figure 2.
All capacity, efficiency and cost of operation
information as required for Department of Energy
“Energyguide” Fact Sheets is based upon the fresh air
blank-off plate in place and is recommended for
maximum energy efficiency.
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.
CONDENSATE DRAIN
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.

Manual 2100-425B
Page 9 of 21
WALL MOUNTING INFORMATION
1. Two holes, for the supply and return air openings,
must be cut through the wall as shown in Figure 3.
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. See
Figures 4 and 5.
INSTALLATION INSTRUCTIONS
3. Locate and mark lag bolt locations and bottom
mounting bracket location. See Figure 4.
4. Mount bottom mounting bracket.
5. Hook top rain flashing under back bend of top. Top
rain flashing is shipped secured to the right side of
the back.
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 Figure 3.
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
heat strips and control panel and to allow proper
airflow to the outdoor coil. Additional clearance
may be required to meet local or national codes.
TYPICAL INSTALLATIONS
See Figure 6 for common ways to install the wall-mount
unit.
WIRING — MAIN POWER
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 (75ºC
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.
3. Concrete block walls must be thoroughly inspected
to insure that they are capable of carrying the weight
of the installing unit. See Figure 4.
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 is provided
for ease of installation.
2. The unit itself is suitable for “0” inch clearance, but
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. If a combustible
wall, use a minimum of 30 ½ " x 10 ½ " dimensions for
sizing. However, it is generally recommended that a
1-inch clearance is used for ease of installation and
maintaining the required clearance to combustible
material. The supply air opening would then be
32" x 12". See Figures 3 and 7 for details.
WARNING
Fire hazard can result if 1/4 inch clearance to
combustible materials for supply air duct is
not maintained. See Figure 3.
WARNING
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.

Manual 2100-425B
Page 10 of 21
FIGURE 3
MOUNTINGINSTRUCTIONS
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.
See Start-up section for information on three phase
scroll compressor start-ups.
6 5/8" 6 5/8"
1 7/8"
21"
21"
16"
16"
16"
DIM. "D"
DIM. "B"
DIM. "E"
16"
DIM. "A"DIM. "C" DIM. "C"
30"
Supply Opening
Return Opening
Wall Bracket
Wall
Mounting
Hole
Pattern
Front view of wall with unit removed
1/4" clearance on
all (4) sides of
supply air duct
is required from
combustible
materials
Supply
Air Duct
Return
Air Opening
Wall
Circuit breaker
access door
Heater access
panel Note: It is recommended
that a bead of silicone
caulking be placed behind
the side mounting flanges
and under top flashing at
time of installation.
MIS-796 A
Top flashing detail view
Attach supplied
rain flashing.
Apply caulk
between flashing
and wall.
Foam air seal
Seal with bead of
caulking along entire
length of top.
Supply flange
Side view of wall with unit installed
DIM. "A" DIM. "B" DIM. "C" DIM. "D" DIM. "E"
Required dimensions to
maintain 1/4" min. clearance
from combustible materials 30 1/2" 10 1/2" 6 1/4" 1 1/4" 29 3/4"
Required dimensions to
maintain 1" clearance from
combustible materials 32" 12" 5 1/2" 2" 29"
DIMENSION CHART
DIM. "A" DIM. "B" DIM. "C" DIM. "D" DIM. "E"
Required dimensions to
maintain 1/4" min. clearance
from combustible materials 30 1/2" 10 1/2" 6 1/4" 1 1/4" 29 3/4"
Required dimensions to
maintain 1" clearance from
combustible materials 32" 12" 5 1/2" 2" 29"
DIMENSION CHART

Manual 2100-425B
Page 11 of 21
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).
Five (5) wires should be run from thermostat subbase to
the 24V terminal board in the unit. A five conductor, 18
gauge copper, color-coded thermostat cable is
recommended. The connection points are shown in
Figure 8.
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
240V to 208V tap. The acceptable operating voltage
range for the 240 and 208V taps are shown in Table 4
below.
TABLE 4
OPERATINGVOLTAGERANGE
PATEGNAR
V042612-352
V802781-022
TABLE 5
THERMOSTAT WIRE SIZE
remrofsnarT AVALFeguaGeriW
mumixaM ecnatsiD teeFnI
553.2
eguag02 eguag81 eguag61 eguag41 eguag21
5406 001 061 052
TABLE 6
WALLTHERMOSTAT
tatsomrehTserutaeFetanimoderP
750-3048 3511D0225HT
taeHegats1,looCegats1 elbammargorP-noNcinortcelE revoegnahclaunaMrootuA
850-3048 1511D0225HT
taeHegats2,looCegats2 elbammargorP-noNcinortcelE revoegnahclaunaMrootuA
060-3048 )544-0211(
taeHegats3;looCegats3 cinortcelEelbammargorP-noN/elbammargorP lanoitnevnoCroPH revoegnahclaunaMrootuA
LOW VOLTAGE CONNECTIONS
These units use a grounded 24 volt AC low voltage
circuit.
The "R" terminal is the hot terminal and the "C"
terminal is grounded.
"G" terminal is the fan input.
"Y" terminal is the compressor input for cooling.
"W1" terminal is the 1st stage electric heat. The
reversing valve must be energized for heating mode.
"W2" terminal is second stage heat (if equipped).
"F" terminal is the ventilation input. This terminal
energizes any factory installed ventilation option.
LOWVOLTAGECONNECTIONS
FOR DDC CONTROL
Fan Only Energize G
Cooling Mode Energize Y, G
1st Stage Heating Energize W1
2nd Stage Heating Energize W1, W2
(if employed)
Ventilation Energize G, F

Manual 2100-425B
Page 12 of 21
FIGURE 4
WALL-MOUNTINGINSTRUCTIONS
FIGURE 5
WALL-MOUNTINGINSTRUCTIONS
SEEFIGURE3 — MOUNTINGINSTRUCTIONS
SEEUNITDIMENSIONS,FIGURE1,
FORACTUALDIMENSIONS
SEEFIGURE1FOR
DUCTDIMENSIONS

Manual 2100-425B
Page 13 of 21
FIGURE 6
COMMONWALL-MOUNTINGINSTALLATIONS

Manual 2100-425B
Page 14 of 21
FIGURE 7
ELECTRIC HEAT CLEARANCE
WARNING
• Aminimum 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 fire.
Side section view of supply air duct for
wall mounted unit showing 1/4 inch
clearance to combustible surfaces.

Manual 2100-425B
Page 15 of 21
FIGURE 8
LOW VOLTAGE WIRING

Manual 2100-425B
Page 16 of 21
START UP
IMPORTANT INSTALLER NOTE
For improved start-up performance, wash the indoor coil
with a dishwasher detergent.
CRANKCASE HEATERS
WA611, WA70 and WA721 units are provided with
compressor crankcase heat.
The WA611, WA70 and WA721 models have a band
type heater located around the bottom of the compressor.
This heater is controlled by the crankcase heater relay.
The heater is only energized when the compressor is not
running.
Some form of crankcase heat is essential to prevent
liquid refrigerant from migrating to the compressor,
preventing oil pump out on compressor start-up and
possible scroll vane or bearing failure due to
compressing a liquid.
The decal in Figure 9 is affixed to all WA611, WA70
and WA721 units detailing start-up procedure. This is
very important. Please read carefully.
HIGH PRESSURE SWITCH
The WA611, WA70 and WA721 models are supplied
with a remote reset high 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. All three
phase units incorporate a phase monitor to ensure proper
field wiring. See the Phase Monitor" section in this
manual.
Verification of proper rotation must be made any time a
compressor is change or rewired. 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 ZR3 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.
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 rotations, as well as, substantially
reduced current draw compared to tabulated values.
The direction of rotation of the compressor may be
changed by reversing any two line connections to the
unit.
IMPORTANT
These procedures must be followed at initial
start-up and at any time power has been
removed for 12 hours or longer.
To prevent compressor damage which may
result from the presence of liquid
refrigerant in the compressor crankcase.
1. Make certain the room thermostat is in
the "off" position (the compressor is
not to operate).
2. Apply power by closing the system
disconnect switch. This energizes the
compressor heater which evaporates
the liquid refrigerant in the crankcase.
3. Allow 4 hours or 60 minutes per pound
of refrigerant in the system as noted
on the unit rating plate, whichever is
greater.
4. After properly elapsed time, the
thermostat may be set to operate the
compressor.
5. Except as required for safety while
servicing – Do not open system
disconnect switch.
7961-061
FIGURE 9
START-UPLABEL

Manual 2100-425B
Page 17 of 21
SERVICE HINTS
1. Caution homeowner 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.
SEQUENCE OF OPERATION
COOLING – Circuit R-Y makes at thermostat pulling
in compressor contactor, starting the compressor and
outdoor motor. The G (indoor motor) circuit is
automatically completed on any call for cooling
operation or can be energized by manual fan switch on
subbase for constant air circulation. On all 208/230 volt
models, when G circuit is de-energized the indoor
blower motor will continue to run for one minute. On a
call for heating, circuit R-W1 make at the thermostat
pulling in heat contact for the strip heat and blower
operation. On a call for second stage heat, R-W2 makes
bringing on second heat contactor, if so equipped.
COMPRESSOR CONTROL MODULE
The compressor control module is standard on the
models covered by this manual. The compressor control
is an anti-short cycle/lockout timer with high and low
pressure switch monitoring and alarm relay output.
Adjustable Delay On Make And Break Timer
On initial power up or any time 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 if employed) is closed,
the compressor contactor is energized. Upon shutdown
the delay or 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.
Alarm Relay Output
Alarm terminal is output connection for applications
where alarm relay is employed. This terminal is
powered whenever compressor is locked out due to HPC
or LPC sequences as described.
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 or heat pump unit
model. The lockout features, both soft and
manual, are a function of the Compressor
Control Module.

Manual 2100-425B
Page 18 of 21
PHASE MONITOR
All units with three phase scroll compressors are
equipped with a 3 phase line monitor to prevent
compressor damage due to phase reversal.
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.
PRESSURE SERVICE PORTS
High and low pressure service ports are installed on all
units so that the system operating pressures can be
observed. Pressure tables 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.
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 (30 seconds) DOB =123 second DOM
1.0 minute (60 seconds) DOB =126 second DOM
2.0 minute (120 seconds) DOB =132 second DOM
3.0 minute (180 seconds) DOB =138 second DOM
4.0 minute (240 seconds) DOB =144 second DOM
5.0 minute (300 seconds) DOB =150 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

Manual 2100-425B
Page 19 of 21
TROUBLESHOOTING
FIGURE 10
FAN BLADE SETTING
REFRIGERANT CHARGE
The correct system R-22 charge is shown on the unit
rating plate. Optimum unit performance will occur with
a refrigerant charge resulting in a suction line
temperature (6 inches from compressor) as shown in
Table 8:
The suction line temperatures in Table 8 are based upon
80ºF dry bulb / 67ºF wet bulb (50 percent R.H.)
temperature and rated airflow across the evaporator
during cooling cycle.
FAN BLADE SETTING DIMENSIONS
Shown in the drawing below are the correct fan blade
setting dimensions for proper air delivery across the
outdoor coil.
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.
REMOVAL OF FAN SHROUD
1. Disconnect all power to unit.
2. Remove the screws holding both grills – one on
each side of unit – and remove grills.
3. Remove screws holding fan shroud to condenser and
bottom – (9) screws.
4. Unwire condenser fan motor.
5. Slide complete motor, fan blade, and shroud
assembly out the left side of the unit.
6. Service motor/fan as needed.
7. Reverse steps to reinstall.
TABLE 7
FAN BLADE DIMENSIONS
ledoMAnoisnemiD
116AW 07AW 52.1
127AW 57.
TABLE 8
SUCTIONLINETEMPERATURES
sledoM detaR wolfriA F°59 .pmeTDO F°28 .pmeTDO
116AW 053,145-2506-75
07AW 008,106-8585-65
127AW 008,116-9595-75
cRated CFM and ESP on high speed tap.
TABLE 9
CFM AND ESP
detaR ledoM
1
detaR MFC
1
detaR PSE
dednemmoceR wolFriA egnaR
116AW053,102.001,1--574,1
07AW008,102.573,1--000,2
127AW008,102.574,1--000,2
TABLE 10
INDOOR BLOWER PERFORMANCE – CFM AT 230 VOLTS
1This model has 3-speed motor, but low speed cannot be used.
.P.S.E HnI
2
O
116AW 07AW 127AW
deepShgiHdeepSmuideM
1 deepShgiHdeepSwoL
lioCyrDlioCteWlioCyrDlioCteWlioCyrDlioCteWlioCyrDlioCteW
0.007,1575,1524,1573,1002,2000,2006,1054,1
1.055,1574,1573,1052,1001,2009,1525,1573,1
2.004,1053,1052,1001,1000,2008,1------
3.052,1051,1001,1---578,1007,1------
4.------------577,1006,1------
5.------------056,1574,1------

Manual 2100-425B
Page 20 of 21
Low side pressure ± 2 psig
High side pressure ± 5 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 instruction.
TABLE 12
COOLING PRESSURE – (ALL TEMPERATURES °F)
ledoM
nruteR riA .pmeTerusserP5708580959001501011511
C-,B-.A-116AW
BD57 BW26 ediSwoL ediShgiH 27732 27732 37042 47742 57652 67962 77682 97403 97723
BD08 BW76 ediSwoL ediShgiH 77342 77342 87642 97352 08362 18672 28392 48213 58533
BD58 BW27 ediSwoL ediShgiH 08252 08252 18552 28262 38272 48682 58303 78323 88743
A-207AW
BD57 BW26 ediSwoL ediShgiH 86512 86822 96242 07652 17272 27982 37503 47423 57343
BD08 BW76 ediSwoL ediShgiH 37022 37432 47842 57362 67972 77692 87313 97233 08253
BD58 BW27 ediSwoL ediShgiH 67822 67242 77752 87272 97982 08603 18423 28443 38463
C-,B-107AW
BD57 BW26 ediSwoL ediShgiH 26412 36032 46742 56562 66082 76992 86613 96333 07153
BD08 BW76 ediSwoL ediShgiH 76022 86632 96452 07172 17782 27603 37423 47243 57063
BD58 BW27 ediSwoL ediShgiH 27522 37342 47162 57972 67792 77613 87533 97353 08273
127AW
BD57 BW26 ediSwoL ediShgiH 36502 46222 56732 66452 76862 86682 96203 07813 17633
BD08 BW76 ediSwoL ediShgiH 86112 96722 07442 17162 27572 37492 47013 57723 67543
BD58 BW27 ediSwoL ediShgiH 37612 47432 57152 67862 77582 87303 97123 08933 18753
TABLE 11
MAXIMUM ESP OF OPERATION
ELECTRIC HEAT ONLY
ledoM116AW07AW127AW
deepS WK muideM deepS hgiH deepS woL deepS hgiH deepS woL deepS hgiH deepS
50A- 80A- 01A- 02A- 03. 03. 03. 03. 03. 03. 03. 03. 05. --- 05. 04. 05. --- 05. 05. --- --- --- --- --- --- --- ---
90B- 51B- 81B- 03. --- --- 03. --- --- 05. 05. 05. 05. 05. 05. 05. 05. 05. 05. 05. 05.
90C- 51C- 03. --- 03. --- 05. 05. 05. 05. --- --- --- ---