Bard WA702-A, WA721, WA611, WA701-C, WA701-B User Manual

WALL MOUNTED P ACKAGED AIR CONDITIONER
INSTALLATION INSTRUCTIONS
Models:
WA611 WA701-B WA701-C WA702-A WA721
Bard Manufacturing Company Bryan, Ohio 43506
MIS-801
Manual No.: 2100-425 Supersedes: File: Volume III, Tab 16 Date: 01-01-03
© Copyright 2003
CONTENTS
Getting Other Information and Publications
For more information, contact these publishers: ..... 1
Wall Mount General Information
Air Conditioner Wall Mount Model Nomenclature.... 2
Shipping Damage .................................................... 5
General ............................................................... 5
Duct Work ............................................................... 5
Filters ............................................................... 6
Fresh Air Intake ....................................................... 6
Condensate Drain.................................................... 6
Installation Instructions
Wall Mounting Information....................................... 7
Mounting the Unit .................................................... 7
Typical Installations ................................................. 7
Wiring – Main Power ............................................. 7
Wiring – Low Voltage Wiring ................................. 9
Figures
Start Up
Important Installer Note ......................................... 14
Crankcase Heaters................................................ 14
High Pressure Switch ............................................ 14
Three Phase Scroll Compressor Start Up
Information............................................................. 14
Service Hints ......................................................... 15
Sequence of Operation.......................................... 15
Compressor Control Module.................................. 15
Adjustments........................................................... 16
Phase Monitor ....................................................... 16
Pressure Service Ports .......................................... 16
Troubleshooting
Fan Blade Setting Dimensions .............................. 17
Removal of Fan Shroud......................................... 17
Refrigerant Charge ................................................ 17
Pressure Chart ...................................................... 18
Optional Accessories............................................. 19
Tables
Figure 1 Unit Dimensions..................................... 3
Figure 2 Blower Damper Assembly...................... 6
Figure 3 Mounting Instructions............................. 8
Figure 4 Wall-Mounting Instructions .................. 10
Figure 5 Wall-Mounting Instructions .................. 10
Figure 6 Common Wall-Mounting Instructions ....11
Figure 7 Electric Heat Clearances ..................... 12
Figure 8 Low Voltage Wiring.............................. 13
Figure 9 Start-Up Label...................................... 14
Figure 10 Fan Blade Setting ................................ 17
Table 1 Electric Heat Table................................. 2
T able 2 Dimensions of Basic Unit ....................... 3
Table 3 Electrical Specifications ......................... 4
Table 4 Operating Voltage Range ...................... 9
Table 5 Thermostat Wire Size ............................ 9
Table 6 Wall Thermostat and
Subbase Combinations.......................... 9
Table 7 Fan Blade Dimensions......................... 17
Table 8 Suction Line Temperatures .................. 17
Table 9 CFM and ESP ...................................... 17
Table 10 Indoor Blower Performance ................. 17
Table 11 Maximum ESP of Operation
Electric Heat Only ................................ 18
Table 12 Cooling Pressure ................................. 18
Table 13 Optional Accessories ........................... 19
i
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:
ACC A 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
ASHRAE American Society of Heating Refrigerating,
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; 5,002,116; 4,924,934;
4,875,520; 4,825,936
Manual 2100-425 Page 1
WALL MOUNT GENERAL INFORMA TION
AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE
MODEL NUMBER
CAPACITY
61 – 5 Ton 70 – 6 Ton 72 – 6 To n
REVISION
VOL TS & PHASE
A – 230/208-1 B – 230/208/60-3 C – 460/60-3
NOTE: For 0KW and circuit breakers (230/208 V) or pull disconnects (460 V) applications, insert 0Z in the KW field of model number.
WA 70 1 – B 09 X X X X X J
VENTILATION OPTIONS
X – Barometric Fresh Air Damper
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
(Standard) B – Blank-off Plate M – Motorized Fresh Air Damper V – Commercial Room V entilator -
Motorized with Exhaust E – Economizer (Internal) - Fully
Modulating with Exhaust R – Energy Recovery V entilator -
with Exhaust
FILTER OPTIONS
X – One Inch Throwaway W – One Inch Washable
P – Two Inch Pleated
COLOR OPTIONS
X – Beige
(Standard)
1 – White
(Standard)
COIL OPTIONS
X – Standard 1 – Phenolic Coated Evaporator 2 – Phenolic Coated Condenser 3 – Phenolic Coated Evaporator
CONTROL MODULES
J – Standard on all
Models
and Condenser
OUTLET OPTIONS
X – Front (Standard)
TABLE 1
ELECTRIC HEAT TABLE
sledoM
1-V0421-V8023-V0423-V8023-V064
WKSPMAHUTBSPMAHUTBSPMAHUTBSPMAHUTBSPMAHUTB
0.5
0.8
0.9
0.01
8.02004,811.81001,41------------------
3.33006,828.82008,12------------------
------------7.12009,137.81053,428.01000,23
6.14054,532.63009,62------------------
A-116AWB-116AWC-116AW
sledoM
1-V0421-V8023-V0423-V8023-V064
WKSPMAHUTBSPMAHUTBSPMAHUTBSPMAHUTBSPMAHUTB
0.5
0.9
0.01
0.51
0.81
0.02
8.02050,711.81008,21------------------
------------7.12006,037.81030,328.01007,03
6.14031,432.63006,52------------------
5.26002,151.45004,832.63002,152.13004,833.71000,74
------------3.34034,165.73001,64------
2.38062,861.27002,15------------------
A-207AW
B-107AW B-127AW
Manual 2100-425 Page 2
C-107AW C-127AW
TABLE 2
DIMENSIONS OF BASIC UNIT FOR ARCHITECTURAL AND INSTALLATION REQUIREMENTS (Nominal)
htdiW
tinU
W
116AW
07AW
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
127AW
All dimensions in inches.
htpeD
D
thgieH
H
ylppuSnruteR
EFGI J KL MNOPQABCB
FIGURE 1
UNIT DIMENSIONS
Manual 2100-425
Page 3
MIS-764
Manual 2100-425
Page 4
SLEDOMdetaR
Z0A,00A-116AW 50A­80A­01A-
Z0B,00B-116AW 90B-
Z0C,00C-116AW 90C-
Z0A,00A-207AW 50A­01A­51A­02A-
Z0B,00B-107AW 90B­51B­81B-
Z0C,00C-107AW 90C­51C-
Z0B,00B-127AW 90B­51B­81B-
Z0C,00C-127AW 90C­51C-
TABLE 3
ELECTRICAL SPECIFICATIONS
TIUCRICELGNIS TIUCRICLAUD
3
fo.oN rewoP
stiucriC
1
1-802/302
3-802/032
3-064
1-802/302
3-802/032
3-064
3-802/032
3-064
1 1 1
1 1
1 1
1 1 1
2ro1 2ro1
1 1 1 1
1 1 1
1 1 1 1
1 1 1
muminiM tiucriC
34 34 74 85
92 33
51 71
84 84 95 58
011
63 63 25 06
71 71 62
63 63 25 06
71 71 62
1
revO
yticapmA
05 05 06 06
54 54
02 02
06 06 06 09
011
05 05 06 06
52 52 03
05 05 06 06
52 52 03
2
mumixaM
dleiF
tnerruC
noitcetorP
eriW eziS
8 8 8 6
8 8
21 21
8 8
6 4 2
8 8 6 6
21 21 01
8 8 6 6
21 21 01
2
3
tiucriCmuminiM
dnuorG eriW eziS
01 01 01 01
01 01
21 21
01 01
01 8 6
01
01
01
01
21
21
01
01
01
01
01
21
21
01
AN AN AN AN
AN AN
AN AN
AN AN AN 95 95
AN AN AN AN
AN AN AN
AN AN AN AN
AN AN AN
yticapmA
ATKCBTKCATKCBTKCATKCBTKCATKCBTKC
AN AN AN AN
AN AN
AN AN
AN AN AN 62 25
AN AN AN AN
AN AN AN
AN AN AN AN
AN AN AN
1
revOmumixaM
tnerruC
noitcetorP
AN AN AN AN
AN AN
AN AN
AN AN AN 06 06
AN AN AN AN
AN AN AN
AN AN AN AN
AN AN AN
AN AN AN AN
AN AN
AN AN
AN AN AN 03 06
AN AN AN AN
AN AN AN
AN AN AN AN
AN AN AN
2
eziSeriWdleiF
AN AN AN AN
AN AN
AN AN
AN AN
AN 6 6
AN
AN
AN
AN
AN
AN
AN
AN
AN
AN
AN
AN
AN
AN
AN AN AN AN
AN AN
AN AN
AN AN AN 01
6
AN AN AN AN
AN AN AN
AN AN AN AN
AN AN AN
2
eziSeriWdnuorG
AN AN AN AN
AN AN
AN AN
AN AN AN 01 01
AN AN AN AN
AN AN AN
AN AN AN AN
AN AN AN
AN AN AN AN
AN AN
AN AN
AN AN AN 01 01
AN AN AN AN
AN AN AN
AN AN AN AN
AN AN AN
j
Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors.
k
Based on 75°C copper wire. All wiring must conform to the National Electric Code (NEC) and all local codes. These "Minimum Circuit Ampacity" values are to be used for sizing the field power conductors. Refer to the National Electric Code (latest
l
version), Article 310 for power conductor sizing. 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.
CAUTION: When more than one filed power conductor circuit is run through one
SHIPPING DAMAGE
DUCT WORK
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.
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 9 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 4 and 5 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.
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 1 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.
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.
Any grille that meets the 5/8 inch louver criteria, may be used. It is recommended that Bard Return Air Grille Kit RG-2 thru RG-5 or RFG-2 thru 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.
Manual 2100-425 Page 5
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.
BLOWER DAMPER ASSEMBLY
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.
FIGURE 2
BLADE IS LOCKED CLOSED FOR SHIPPING
MIS-938
Manual 2100-425 Page 6
INST ALLA TION INSTRUCTIONS
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.
WARNING
Fire hazard can result if 1/4 inch clearance to combustible materials for supply air duct is not maintained. See Figure 3.
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 30-1/2" x 10-1/2" 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, 4 and 7 for details.
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.
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 wall­mount 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.
Manual 2100-425 Page 7
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
MOUNTING INSTRUCTIONS
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.
FIGURE 3
NOTE: It is recommended that a bead of silicone
caulking be placed behind the side mounting flanges and under the top flashing at the time of installation.
Manual 2100-425 Page 8
MIS-796
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
OPERATING VOLTAGE RANGE
PATEGNAR
V042612-352
V802781-022
THERMOSTAT WIRE SIZE
remrofsnarT
AVALFeguaGeriW
553.2
NOTE: The voltage should be measured at the field
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.
TABLE 5
power connection point in the unit and while the unit is operating at full load (maximum amperage operating condition).
mumixaM
ecnatsiD
teeFnI
eguag02
eguag81
eguag61
eguag41
eguag21
54 06
001 061 052
TABLE 6
WALL THERMOSTAT AND SUBBASE COMBINATIONS
tatsomrehTesabbuSserutaeFetanimoderP
200-3048 1113F78T
140-3048
C4308T
910-3048
0671C478T
120-3048
4391D478T
940-3048 083-39F1
340-3048
002-MC
300-4048
0221A935Q
---loocegats1,taehegats1
210-4048
1001A476Q
210-4048
1001A476Q
---taehegats2,loocegats2
---
loocegats1,taehegats1
no-otua:naFlooc-ffo-taeh:metsyS
no-otua:naFlooc-ffo-taeh:metsyS
taehegats2,loocegats1
taehegats2,loocegats2
gnimmargorpyad7cinortcelE
loocegats1,taehegats1
no-otua:naFlooc-otua-taeh:metsyS
no-otua:naFlooc-otua-taeh:metsyS
no-otua:naFlooc-ffo-taeh:metsyS
Manual 2100-425 Page 9
FIGURE 4
WALL-MOUNTING INSTRUCTIONS
SEE FIGURE 3 MOUNTING INSTRUCTIONS
FIGURE 5
WALL-MOUNTING INSTRUCTIONS
SEE UNIT DIMENSIONS, FIGURE 1,
FOR ACTUAL DIMENSIONS
MIS-548
SEE FIGURE 1 FOR DUCT DIMENSIONS
Manual 2100-425 Page 10
MIS-549
FIGURE 6
COMMON WALL-MOUNTING INSTALLATIONS
MIS-550
Manual 2100-425 Page 11
MIS-277
FIGURE 7
ELECTRIC HEAT CLEARANCE
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 fire.
Manual 2100-425 Page 12
FIGURE 8
LOW VOLTAGE WIRING
Manual 2100-425 Page 13
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, casing oil pump out on compressor start-up and possible valve 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.
FIGURE 9
START-UP LABEL
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
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 later 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.
Manual 2100-425 Page 14
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 air flow 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
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.
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.
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 2100-425 Page 15
ADJUSTMENTS
PHASE MONITOR
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) DO B =123 second DOM
1.0 minute (60 seconds) DO B =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
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.
Manual 2100-425 Page 16
TROUBLESHOOTING
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.
FIGURE 10
FAN BLADE SETTING
TABLE 7
FAN BLADE DIMENSIONS
ledoMAnoisnemiD
116AW
07AW
127AW
52.1
57.
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.
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:
TABLE 8
SUCTION LINE TEMPERATURES
sledoM
116AW
07AW
127AW
detaR wolfriA
053,145-2506-75
008,106-8585-65
008,116-9595-75
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.
TABLE 9
CFM and ESP
1
detaR
ledoM
116AW053,102.001,1--574,1
07AW008,102.573,1--000,2
127AW008,102.574,1--000,2
detaR
MFC
1
F°59
.pmeTDO
detaR
PSE
F°28
wolFriA
egnaR
.pmeTDO
dednemmoceR
Rated CFM and ESP on high speed tap.
Q
TABLE 10
INDOOR BLOWER PERFORMANCE – CFM AT 230 VOLTS
116AW
.P.S.E
HnI2O
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------
deepShgiHdeepSmuideM
lioCyrDlioCteWlioCyrDlioCteWlioCyrDlioCteWlioCyrDlioCteW
1
deepShgiHdeepSwoL
07AW
127AW
j This model has 3-speed motor, but low speed cannot be used.
Manual 2100-425 Page 17
TABLE 11
MAXIMUM ESP OF OPERATION
ELECTRIC HEAT ONLY
ledoM116AW07AW127AW
deepS
WK
50A­80A­01A­02A-
90B­51B­81B-
90C­51C-
muideM
deepS
03.
03.
03.
03.
03.
---
---
03.
---
hgiH
deepS
03.
03.
03.
03.
03.
---
---
03.
---
woL
deepS
05.
---
05.
04.
05.
05.
05.
05.
05.
hgiH
deepS
05.
---
05.
05.
05.
05.
05.
05.
05.
woL
deepS
---
---
---
---
05.
05.
05.
---
---
hgiH
deepS
---
---
---
---
05.
05.
05.
---
---
TABLE 12
COOLING PRESSURE – (All temperatures °F)
nruteR
riA
ledoM
C-,B-.A-116AW
A-207AW
C-,B-107AW
127AW
.pmeTerusserP5708580959001501011511
BD57 BW26
BD08 BW76
BD58 BW27
BD57 BW26
BD08 BW76
BD58 BW27
BD57 BW26
BD08 BW76
BD58 BW27
BD57 BW26
BD08 BW76
BD58 BW27
ediSwoL
ediShgiH
ediSwoL
ediShgiH
ediSwoL
ediShgiH
ediSwoL
ediShgiH
ediSwoL
ediShgiH
ediSwoL
ediShgiH
ediSwoL
ediShgiH
ediSwoL
ediShgiH
ediSwoL
ediShgiH
ediSwoL
ediShgiH
ediSwoL
ediShgiH
ediSwoL
ediShgiH
27 732
77 342
08 252
86 512
37 022
67 822
26 412
76 022
27 522
36 502
86
112
37 612
27 732
77 342
08 252
86 822
37 432
67 242
36 032
86 632
37 342
46 222
96 722
47 432
37 042
87 642
18
552
96 242
47 842
77 752
46 742
96 452
47
162
56 732
07 442
57
152
47 742
97 352
28 262
07 652
57 362
87 272
56 562
07
172
57 972
66 452
17 162
67 862
57 652
08 362
38 272
17
272
67 972
97 982
66 082
17
782
67 792
76 862
27 572
77 582
67 962
18
672
48 682
27 982
77 692
08 603
76 992
27 603
77 613
86 682
37 492
87 303
77 682
28 392
58 303
37 503
87 313
18
423
86 613
37 423
87 533
96 203
47 013
97
123
97 403
48 213
78 323
47 423
97 233
28 443
96 333
47 243
97 353
07 813
57 723
08 933
97 723
58 533
88 743
57 343
08 253
38 463
07
153
57 063
08 273
17
633
67 543
18
753
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.
Manual 2100-425 Page 18
TABLE 13
OPTIONAL ACCESSORIES
WA611-A
WA611-B
WA611-C
WA702-A
WA701-B
WA701-C, WA721-C
LEDOMNOITPIRCSED
50A-50AWHEegakcaPretaeHX
01A-01AWHEegakcaPretaeHX
51A-51AWHEegakcaPretaeHX
02A-02AWHEegakcaPretaeHX
90B-06AWHEegakcaPretaeHXX
51B-50AWHEegakcaPretaeHXX
81B-50AWHEegakcaPretaeHXX
90C-A50AWHEegakcaPretaeHXX
51C-A50AWHEegakcaPretaeH X
50A-16AWHEegakcaPretaeHX
01A-16AWHEegakcaPretaeHX
80A-16AWHEegakcaPretaeHX
90B-16AWHEegakcaPretaeHX
5-POBetalPffOknalB XXXXXXX
5-DAFBrepmaDriAhserFcirtemoraB XXXXXXX
5-DAFMrepmaDriAhserFdezirotoM XXXXXXX
5-VRCtsuahxEhtiwrotalitneVmoorssalC XXXXXXX
5-MFIEtsuahxEhtiwrezimonocE XX XXXX
A5A-VREWrotalitneVyrevoceRygrenEXXX
A5C-VREWrotalitneVyrevoceRygrenEXX
C10-DPMWtiKtcennocsiDlluPXX
WA721-B
Manual 2100-425 Page 19
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