INSTALLATION INSTRUCTIONS WALL MOUNTED PACKAGED HEAT PUMP Models: WH301, WH361 Bard Manufacturing Company, Inc. Bryan, Ohio 43506 Since 1914. . .Moving ahead just as planned. © Copyright 2003 Manual No.
CONTENTS Getting Other Information and Publications For more information, contact these publishers ........................................ 3 Wall Mount General Information Heat Pump Wall Mount Model Nomenclature ........ 4 Shipping Damage .................................................. 4 General ............................................................. 4 Duct Work ...................................................... 4 & 8 Filters .............................................................
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.
WALL MOUNT GENERAL INFORMATION HEAT PUMP WALL MOUNT MODEL NOMENCLATURE WH 36 MODEL NUMBER CAPACITY 30 - 2½ Ton 36 - 3 Ton 1 A 10 X X X X X CONTROL MODULES REVISIONS VOLTS & PHASE A - 230/208/60/1 B - 230/208/60/3 C - 460/60/3 A 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
Manual 2100-193O Page 5 of 26 B TU B TU 18.0 51200 A 15 B TU 21.7 30600 18.7 23030 10.8 30700 A 460-3 9 B TU 208-3 WH301-C 14.4 20500 12.5 15360 7.2 20475 A 240-3 WH301-B 6 15 41.6 34130 36.2 25600 A 10 B TU 208-1 20.8 17065 18.1 12800 A 240-1 WH301-A 5 KW Models B TU A B TU 208-1 62.5 51200 54.1 38400 41.6 34130 36.2 25600 20.8 17065 18.1 12800 A 240-1 WH361-A TABLE 1 ELECTRIC HEAT TABLE B TU A B TU 208-3 A B TU 460-3 WH361-C 36.2 51200 31.2 38400 18.
Manual 2100-193O Page 6 of 26 Depth Height (D) (H) B C A B Return Supply E F G I J K L M N O P SIDE VIEW * OPTIONAL TOP OUTLET (FACTORY INSTALLED ONLY) FOR WH30 AND WH36 MODELS ONLY. FRONT VIEW FIGURE 1 UNIT DIMENSIONS 9.14 Q BACK VIEW WH30 38.200 17.125 70.563 7.88 27.88 13.88 27.88 40.00 18.50 25.75 17.93 26.75 28.75 29.25 27.00 2.75 39.19 22.75 WH36 Width Model (W) TABLE 2 DIMENSIONS OF BASIC UNIT (NOMINAL) S T 4.19 12.00 5.
Manual 2100-193O Page 7 of 26 1 1 1 1 WH301-C00,-C0Z -C06 3 -C09 5 -C15 1 1 1 1 1 1 1 1 WH361-B00,-B0Z -B06 230/208-3 3 -B09 5 -B15 WH361-C00,-C0Z -C06 3 -C09 5 -C15 11 20 25 26 20 38 47 50 27 53 79 83 2 2 4 1 Maximum External Fuse or Circuit Breaker 2 2 15 20 25 30 25 40 50 50 40 60 80 90 15 20 25 30 25 40 50 35 50 80 14 12 10 10 10 8 8 8 10 6 4 4 14 12 10 10 10 8 8 8 8 4 14 12 10 10 10 10 10 10 10 10 8 8 14 12 10 10 10 10 10 10 10 8 --------- --------- ----53 53 ---------
Refer to Table 12 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 one inch of insulation. Use insulation with a vapor barrier on the outside of the insulation. Flexible joints should be used to connect the duct work to the equipment in order to keep the noise transmission to a minimum.
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.
Manual 2100-193O Page 10 of 26 FIGURE 3 MOUNTING INSTRUCTIONS
FIGURE 4 ELECTRIC HEAT CLEARANCE Side section view of supply air duct for wall mounted unit showing 1/4" clearance to combustible surfaces. WARNING A minimum of 1/4" clearance must be maintained between the supply air duct and combustible materials. This is required for the fist three (3) feet of ducting. It is important to insure that the 1/4" minimum spacing is maintained at all points. Failure to do this could result in overheating the combustible material and may result in a fire.
FIGURE 5 ATTACHING TOP OUTLET AIRFRAMES TO UNIT FIGURE 6 UNIT WITH TOP OUTLET MOUNTED UNDER OVERHANG Manual 2100-193O Page 12 of 26
FIGURE 7 WALL-MOUNTING INSTRUCTIONS SEE FIGURE 3 – MOUNTING INSTRUCTIONS FIGURE 8 WALL-MOUNTING INSTRUCTIONS SEE UNIT DIMENSIONS, FIGURE 1, FOR ACTUAL DIMENSIONS SEE FIGURE 1 FOR DUCT DIMENSIONS Manual 2100-193O Page 13 of 26
FIGURE 9 COMMON WALL-MOUNTING INSTALLATIONS Manual 2100-193O Page 14 of 26
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.
FIGURE 10 LOW VOLTAGE WIRING TABLE 5 THERMOSTAT WIRE SIZE Transformer VA 55 Manual 2100-193O Page 16 of 26 FLA Wire Gauge Maximum Distance In Feet 2.
OPTIONAL OUTDOOR THERMOSTAT APPLICATIONS Since most equipment at the time of manufacture is not designated for any specific destination of the country and are installed in areas not approaching the lower outdoor temperature range, outdoor thermostats are not factory installed as standard equipment, but are offered as an option. There are also different applications for applying outdoor thermostats.
ELECTRIC HEAT HOLD-OFF (See Figures 13 and 14) In other applications, it is desirable to disable the operation of the electric heat until outdoor temperatures have reached a certain design point. This won't allow the electric heat to come on as second stage heating unless the outdoor temperature is below the set point of the outdoor thermostat.
TABLE 6 WALL THERMOSTAT Thermostat Predominate Features 2 stage cool, 2 stage heat 8403-058 Electronic Non-Programmable (TH5220D1151) Auto or Manual changeover 8403-060 (1120-445) 2 stage cool, 3 stage heat Programmable Electronic Auto or Manual changeover with built-in Humidistat Manual 2100-193O Page 19 of 26
START UP IMPORTANT INSTALLER NOTE For improved start-up performance, wash the indoor coil with a dishwashing detergent. CRANKCASE HEATERS All units are provided with some form of compressor crankcase heat. All single and three phase models have an insertion well-type heater located in the lower section of the compressor housing. This is a self-regulating type heater that draws only enough power to maintain the compressor at a safe temperature.
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 on Page 25 covering all models. It is imperative to match the correct pressure table to the unit by model number. DEFROST CYCLE The defrost cycle is controlled by temperature and time on the solid state heat pump control. See Figure 16.
TROUBLESHOOTING SOLID STATE HEAT PUMP CONTROL TROUBLESHOOTING PROCEDURE 3. Turn thermostat blower switch to “Auto” position. Indoor blower should stop. 1. Turn on AC power supply to indoor and outdoor units. 4. Set system switch to heat or cool. Adjust thermostat to call for “Heat” or “Cool” – the indoor blower, compressor and outdoor fan should start. 2. Turn thermostat blower switch to “Fan On” – the indoor blower should start. (If it doesn't, troubleshoot indoor unit and correct problem).
CHECKING TEMPERATURE SENSOR OUTSIDE UNIT CIRCUIT 1. Disconnect temperature sensor from board and from outdoor coil. 2. Use an ohmmeter and measure the resistance of the sensor. Also use ohmmeter to check for short or open. 3. Check resistance reading to chart of resistance use sensor ambient temperature. (Tolerance of part is ± 10%.) 4. If sensor resistance reads very low, then sensor is shorted and will not allow proper operation of the heat pump control. 5.
FAN BLADE SETTING DIMENSIONS Shown in Figure 17 are the correct fan blade setting dimensions for proper air delivery across the outdoor coil. The suction line temperatures in Table 9 are based upon 80ºF dry bulb/67ºF wet bulb (50 percent R.H.) temperature and rated airflow across the evaporator during cooling cycle. 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.
TABLE 13 COOLING PRESSURE (PSI) – OUTDOOR TEMPERATURE °F AIR TEMPERATURE ENTERING OUTDOOR COIL °F Model WH301 WH361 Return Air Temperature Pressure 75 80 85 90 95 75 deg D B 62 deg WB Low S i de High Side 76 235 78 249 80 263 81 277 83 291 84 305 85 319 87 333 88 347 80 deg D B 67 deg WB Low S i de High Side 81 241 83 255 85 269 87 284 88 298 90 312 91 327 93 341 94 356 85 deg D B 72 deg WB Low S i de High Side 88 250 90 264 92 279 93 294 95 308 97 323 98 338 100 353
WH361-C WH361-B DESCRIPTION EHWH30-A05 Heater Packages 1 X EHWH30-A10 Heater Packages 1 X EHWH36-A05 Heater Packages 1 X EHWH36-A10 Heater Packages 1 X EHWH36-A15 Heater Packages 1 X EHWH03-B06 Heater Packages 1 X X EHWH03-B09 Heater Packages 1 X X EHWH03-B15 Heater Packages 1 EHWH03-C06 Heater Packages 1 X X EHWH03-C09 Heater Packages 1 X X EHWH03-C15 Heater Packages 1 X X BOP-3 Blank Off Plate X X X X X X BFAD-3 Barometric Fresh Air Damper X X X X X X
