Bard MIS-656 User Manual

WALL MOUNTED PACKAGED
INSTALLATION INSTRUCTIONS
AIR CONDITIONER
Models:
WA302 WA372
Bard Manufacturing Company Bryan, Ohio 43506
MIS-656
Manual No.: 2100-404 Supersedes: File: Volume III, Tab 16 Date: 04-01-02
© Copyright 2002
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 .................................................... 4
General.................................................................... 4
Duct Work................................................................ 5
Filters....................................................................... 5
Fresh Air Intake ....................................................... 5
Condensate Drain.................................................... 5
Installation Instructions
Wall Mounting Information....................................... 6
Mounting the Unit .................................................... 6
Top Outlet Only ........................................................ 6
Wiring —Main Power .............................................. 6
Wiring —Low Voltage Wiring.................................. 7
Figures
Start Up
Important Installer Note ......................................... 13
High Pressure Switch ............................................ 12
Three Phase Scroll Compressor Start Up
Information............................................................. 13
Phase Monitor ....................................................... 13
Service Hints ......................................................... 13
Sequence of Operation.......................................... 13
Compressor Control Module.................................. 14
Adjustments........................................................... 14
Pressure Service Ports .......................................... 14
Troubleshooting
Fan Blade Setting Dimensions .............................. 15
Removal of Fan Shroud......................................... 15
Refrigerant Charge ................................................ 15
Cooling Pressures ................................................. 16
Optional Accessories............................................. 17
Tables
Figure 1 Unit Dimensions ....................................... 3
Figure 2 Blower Damper Assembly ........................ 5
Figure 3 Mounting Instructions ............................... 8
Figure 4 Wall-Mounting Instructions ....................... 9
Figure 5 Wall-Mounting Instructions ....................... 9
Figure 6 Common Wall-Mounting Installations ..... 10
Figure 7 Electric Heat Clearances .........................11
Figure 8 Low Voltage Wiring................................. 12
Figure 9 Fan Blade Setting ................................... 15
Table 1 Electrical Specifications .......................... 2
Table 2 Dimensions of Basic Unit........................ 3
Table 3 Electric Heat Table .................................. 4
Table 4 Operating Voltage Range........................ 7
Table 5 Thermostat Wire Size ............................. 7
Table 6 Wall Thermostat and
Subbase Combinations........................... 7
Table 7 Fan Blade Dimensions.......................... 15
Table 8 Suction Line Temperatures ................... 15
Table 9 Indoor Blower Performance .................. 15
Table 10 CFM and ESP ....................................... 15
Table 11 Maximum ESP of Operation
Electric Heat Only ................................. 15
Table 12 Cooling Pressure .................................. 16
Table 13 Optional Accessories ............................ 17
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
Residential Winter and Summer Air Conditioning
Duct Design for Residential ............... ACCA Manual D
Winter and Summer Air Conditioning and Equipment Selection
FOR MORE INFORMATION, CONTACT THESE PUBLISHERS:
ACCA Air Conditioning Contractors of America
1712 New Hampshire Avenue NW 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; 4,432,409
Manual 2100-404 Page 1
WALL MOUNT GENERAL INFORMA TION
AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE
MODEL NUMBER
CAPACITY
25 - 2 Ton 37 - 3 Ton
VOL TS & PHASE
A - 230/208/60/1 B - 230/208/60/3 C - 460/60/3
NOTE: For 0KW and circuit breakers (230/208 Volt) or pull disconnects (460 Volt) applications, insert 0Z in the KW field of model no.
REVISIONS
WA372–A10X XXXXA
COLOR OPTIONS
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
FILTER OPTIONS
X - One Inch Throwaway W- One Inch Washable
P - Two Inch Pleated
X - Beige (Standard) 1 - White 2 - Mesa Brown 4 - Buckeye Gray 5 - Desert Brown 6 - Dark Bronze
(Standard)
CONTROL MODULES
(See Spec. Sheet S3208)
COIL OPTIONS
X- Standard 1 - Phenolic Coated Evaporator 2 - Phenolic Coated Condenser 3 - Phenolic Coated Evaporator
and Condenser
OUTLET OPTIONS
X- Front (Standard) T- Top on WA30 and WA37
Models
TABLE 1 – ELECTRICAL SPECIFICATIONS
3
detaR
/stloV
sledoM
Z0A-203AW 50A 01A 51A
Z0B-203AW 90B 51B
Z0C-203AW 90C 51C
Z0A-273AW 50A 80A 01A 51A
Z0B-273LW 60B 90B 51B
Z0C-273LW 60C 90C 21C 51C
Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors.
Q
Based on 75° copper wire. All wiring must conform to the National Electrical Code and all local codes.
R
These "Minimum Circuit Ampacity" values are to be used for sizing the field power conductors. Refer to the National Electric Code
S
(latest revision), Article 310 for power conductor sizing. CAUTION: When more than one field power conductor 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 conductors are in a raceway.
sesahP
3-064
3-064
Manual 2100-404 Page 2
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42 13 75 38
71 23 05
01 71 62
82 23 74 85 48
02 42 33 15
11 21 71 12 62
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TABLE 2
DIMENSIONS OF BASIC UNIT (NOMINAL)
htdiW
ledoM
)W(
203AW
02.83521.71365.0788.788.7288.3188.7200.0405.8157.5239.7157.6257.8252.9200.7257.291.9357.2241.991.400.2100.5
173AW
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FIGURE 1
UNIT DIMENSIONS
Manual 2100-404
Page 3
FRONT VIEW
SIDE VIEW
BACK VIEW
TABLE 3
ELECTRIC HEAT TABLE
sledoM
1-V0421-V8023-V0423-V8023-V064
WKSPMAHUTBSPMAHUTBSPMAHUTBSPMAHUTBSPMAHUTB
0.58.02560,711.81008,21------------------
0.016.14031,432.63006,52------------------
0.515.26002,151.45004,83------------------
0.6------------4.41005,025.21063,512.7574,02
0.9------------7.12006,037.81030,328.01007,03
0.51------------2.63002,152.13004,830.81002,15
0.21------------------------4.41059,04
A-203AW A-273AW
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.
B-203AW B-273AW
C-203AW C-273AW
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 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.
Manual 2100-404 Page 4
DUCT WORK
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 10 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 3 feet of duct attached to the outlet air frame is required. See Wall Mounting Instructions and Figures 3 and 4 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.
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 minimum 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.
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 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.
FILTERS
A 1 inch throw away filter is suppled 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 a 2 inch pleated filter are also available as optional accessories. The internal filter brackets are adjustable to accommodate the 2 inch filter by bending the metal tabs holding the 1 inch filter down. There are two tabs on each side of the filter.
FIGURE 2
FRESH AIR DAMPER ASSEMBLY
BLADE IS LOCKED CLOSED FOR SHIPPING
MIS-938
Manual 2100-404 Page 5
INSTALLATION 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.
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.
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, but is not required.
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 28-1/2" x 8-1/2" 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.
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 3.
4. Mount bottom mounting bracket, if used The supply air opening would then be 30" x 10". See Figures 3 and 4 for details.
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 of 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.
TOP OUTLET ONLY
1. Remove airframe angles from the back of the unit.
2. Coat angles with two 1/8" beads of silicone as
shown. Silicone is shipped in the control panel. See Figure 5.
3. Secure angles to the top of the unit with 14 screws
provided. Use of prepunched holes provided. Do not relocate. See Figure 5.
4. After installation duct work, seal around airframe
and duct work to provide a rain tight seal.
5. It is strongly recommended, but not required, that
this unit be installed under a soffit area large enough to shield the top of the unit. See Figure 6.
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.
Manual 2100-404 Page 6
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.
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.
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:
TABLE 4
OPERATING VOLTAGE RANGE
PATEGNAR
V042612352
V802781022
NOTE: The voltage should be measured a 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 10.
TABLE 5
THERMOSTAT WIRE SIZE
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553.2
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
---
210-4048
1001A476Q
210-4048
1001A476Q
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Manual 2100-404 Page 7
FIGURE 3
MOUNTING INSTRUCTIONS
4 9/16
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.
MIS-311
Manual 2100-404 Page 8
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
MIS-549
MIS-311MIS-311MIS-311
Manual 2100-404 Page 9
FIGURE 6
COMMON WALL-MOUNTING INSTALLATIONS
Manual 2100-404 Page 10
MIS-550
FIGURE 7
ELECTRIC HEAT CLEARANCE
Side section view of supply air duct for wall mounted unit showing 1/4 inch clearance to combustible surfaces.
MIS-277
WARNING
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 2100-404 Page 11
FIGURE 8
LOW VOLTAGE WIRING
Manual 2100-404 Page 12
MIS-1373C
ST ART UP
IMPORTANT INSTALLER NOTE
For improved start-up performance, wash the indoor coil with a dishwasher detergent.
HIGH PRESSURE SWITCH
The WA372 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 identical 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.
PHASE MONITOR
All units with three phase 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.
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
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 230 volt units there is a one minute off delay on the blower motor. 460 volt models do not have an off delay. 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.
Manual 2100-404 Page 13
COMPRESSOR CONTROL MODULE
The compressor control module is optional 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.
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
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 2100-404 Page 14
TROUBLESHOOTING
ledoMteltuOtnorFteltuOpoT
deepS
woL
deepS
hgiH
deepS
woL
deepS
hgiH
deepS
WK
Z0A 50A 80A 01A 51A
05.
05.
05.
54.
53.
05.
05.
05.
05.
04.
05.
54.
---
53.
---
05.
05.
---
05.
---
Z0B 60B 90B 51B
05.
04.
05.
03.
05.
05.
05.
54.
05.
---
04.
---
05.
---
54.
---
Z0C 60C 90C 51C
05.
05.
04.
53.
05.
05.
05.
54.
05.
---
04.
---
05.
---
54.
---
ledoM
1
detaR
MFC
1
detaR
PSE
dednemmoceR
egnaRwolfriA
203AW
000,104.003,1039
173AW
001,103.053,1039
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 9
FAN BLADE SETTING
AIRFLOW
TABLE 7
FAN BLADE DIMENSION
ledoMAnoisnemiD
203AW 273AW
52.1
"A"
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
INDOOR BLOWER PERFORMANCE
CFM AT 230 VOLTS
273AW,203AW
.P.S.E
O
HnI
2
0.593,1513,1059539
1.043,1072,1039519
2.582,1091,1019588
3.502,1001,1558038
4.011,1000,1008557
5.500,1078------
deepShgiHdeepSwoL
lioCyrDlioCteWlioCyrDlioCteW
TABLE 10
RATED CFM AND ESP
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.
SUCTION LINE TEMPERATURES
sledoM
203AW000,195656646
273AW001,195754626
TABLE 8
detaR wolfriA
jRated CFM and ESP on high speed tap
TABLE 11
MAXIMUM ESP OF OPERATION
ELECTRIC HEAT ONLY
F°59
.pmeTDO
F°28
.pmeTDO
Manual 2100-404 Page 15
j
riAnruteR
ledoM
erutarepmeTerusserP5708580959001501011511
BDged57
BWged26
203AW
BDged08
BWged76
BDged58
BWged27
BDged57
BWged26
273AW
BDged08
BWged76
BDged58
BWged27
Low side pressure ± 2 psig High side pressure ± 5 psig Tables are based upon rated CFM (airflow) across the evaporator coil and should be found under section
titled "Refrigerant Charge" elsewhere in manual. If there is any doubt as to correct charge being in the system, the charge should be removed, system evacuated and recharged to serial plate instructions.
COOLING PRESSURE
ediSwoL
ediShgiH
ediSwoL
ediShgiH
ediSwoL
ediShgiH
ediSwoL
ediShgiH
ediSwoL
ediShgiH
ediSwoL
ediShgiH
57
67
512
922
08
18
022
532
38
48
822
342
96
07
002
412
57
57
502
912
77
87
212
722
Outdoor Temperature °F
87
97
08
442
852
572
38
58
68
052
562
282
68
88
98
952
472
292
27
47
57
922
542
162
77
97
08
532
152
862
08
28
38
342
062
772
18
38
48
58
292
803
723
543
78
98
09
19
992
613
533
453
09
29
39
49
903
723
743
663
77
87
97
97
972
692
613
533
28
38
48
58
682
403
423
443
58
68
78
88
892
513
533
853
TABLE 12
Manual 2100-404 Page 16
TABLE 13
OPTIONAL ACCESSORIES
WA302-A
LEDOMNOITPIRCSED
3-POBetalPffOknalB XXXX
3-DAFBrepmaDriAhserFcirtemoraB XXXX
3-DAFMrepmaDriAhserFdezirotoM XXXX
3-VRCtsuahxEhtiwrotalitneVlaicremmoC XXXX
B3-MFIEtsuahxEhtiwrezimonocE XXX
B3A-VREWrotalitneVyrevoceRygrenE XXX
B3A-VREWrotalitneVyrevoceRygrenE X
6-AMClortnoCtneibmAwoL XXX
A61-AMClortnoCerusserPwoL XXXX
A81-AMCCPL+CAL XXX
51-CMCtiKtratSX
50A-30AWHEegakcaPretaeH 1 X
80A-30AWHEegakcaPretaeH 1 X
01A-30AWHEegakcaPretaeH 1 X
51A-30AWHEegakcaPretaeH 1 X
60B-30AWHEegakcaPretaeH 1 XX
90B-30AWHEegakcaPretaeH 1 XX
51B-30AWHEegakcaPretaeH 1 X
51B-73AWHEegakcaPretaeH 1 X
60C-30AWHEegakcaPretaeH 1 X
90C-30AWHEegakcaPretaeH 1 X
21C-30AWHEegakcaPretaeH 1 X
51C-30AWHEegakcaPretaeH 1 X
A50-BCMWtiKrekaerBtiucriCX
B20-BCMWtiKrekaerBtiucriCX
B30-BCMWtiKrekaerBtiucriCX
C10-DPMWtiKtcennocsiDelggoT X
WA372-A
WA302-B
WA372-B
WA302-C
WA372-C
j
These heater packages not suitable for installation in top outlet models.
NOTE: Top outlet models are available only as factory built.
Manual 2100-404 Page 17
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