INSTALLATION INSTRUCTIONS SINGLE PACKAGE HEAT PUMPS Models: PH11242 PH12241 PH11301 PH1230 PH11361 PH1236 PH11422 PH1242 PH10481 PH11481 PH1060 Bard Manufacturing Company Bryan, Ohio 43506 Since 1914 . . . Moving ahead, just as planned.
CONTENTS Getting Other Informations and Publications General Instructions Important ................................................................ Shipping Damage .................................................... General ................................................................ Field-Installed Heater Packages (Optional) ............. 2 2 2 2 Installation Location ................................................................ 9 Typical Installations ...........................................
Getting Other Information and Publications These publications can help you install the air conditioner or heat pump. You can usually find these at your local library or purchase them directly from the publisher. Be sure to consult current edition of each standard. FOR MORE INFORMATION, CONTACT THESE PUBLISHERS: ACCA Air Conditioning Contractors of America 1712 New Hampshire Ave. N.W.
GENERAL INSTRUCTIONS IMPORTANT The equipment covered in this manual is to be installed by trained, experienced service and installation technicians. Any heat pump is more critical of proper operating charge and an adequate duct system than a straight air conditioning unit. All duct work, supply and return ducts, must be properly sized for the design air flow requirement of the equipment. ACCA is an excellent guide to proper sizing.
TABLE 2 ELECTRICAL DATA Model Electric Rating 60 H z - C kt A PH11242 PH11301 PH11361 PH11361-B 230/208-60-1 230/208-60-1 230/208-60-1 230/208-60-3 Operating Votage Range 197-253 Minimum Circuit Ampacity BC SC PH11361-C PH11422 460-60-3 230/208-60-1 197-253 197-253 197-253 187-253 414-506 17 21 25 18 12 29 11 13.5 18 11 6 18.5 Field Wire Size * 10 10 8 10 14 8 Ground Wire Size 10 10 10 10 14 10 Delay Fuse - Max.
TABLE 2A ELECTRICAL DATA Model Electric Rating 60 H z - C kt A P H 10481 PH10481-B 230/208-60-1 230/208-60-3 PH10481-C 460-60-3 P H 1060 PH1060-B 230/208-60-1 230/208-60-3 PH1060-C 460-60-3 Operating Votage Range 197-253 187-253 414-506 197-253 187-253 414-506 Minimum Circuit Ampacity 33 24 12 42 28 14 21.5 14.7 7.1 29 18 9 Field Wire Size * BC SC 8 8 12 8 8 12 Ground Wire Size 10 10 10 10 10 12 Delay Fuse - Max. ** 50 35 15 60 45 20 25.2/21.2 18.3/19.
TABLE 2B ELECTRICAL DATA Model Electric Rating 60 H z - C kt A P H 12241 P H 1230 P H 1236 PH1236-B P H 1242 P H 12481 PH12481-B 230/208-60-1 230/208-60-1 230/208-60-1 230/208-60-3 230/208-60-1 230/208-60-1 230/208-60-3 Operating Votage Range 197-253 197-253 197-253 187-253 197-253 197-253 187-253 Minimum Circuit Ampacity 17 21 26 19 30 33 25.4 10.5 13.5 16.5 10.9 18 20.5 14.
Manual 2100-354 Page 6 TABLE 3 OPTIONAL FIELD INSTALLED HEATER PACKAGES ONLY TO BE USED WITH THE HEAT PUMP MODELS INDICATED Heater P ackag e Model Volts and P h ase PH11242 P H 12241 PH11301 P H 1230 EH3PB-A05 240/208-1 S NA S NA EH3PB-A08 240/208-1 S NA S NA S EH3PB-A10 240/208-1 NA NA S1 S S1 EH3PB-A15 240/208-1 NA NA S NA S EH3PC-A05 240/208-1 NA S NA S EH3PC-A10 240/208-1 NA S NA EH3PC-A15 240/208-1 NA NA NA PH11361 PH11361-B PH11361-C P H 1236 PH1236-
TABLE 4 OPTIONAL FIELD INSTALLED ELECTRIC HEATER TABLE Heater KW & Capacity @ 240 Volts Heater Pkg. Unit Volts Model No. & Phases Heater KW & Capacity @ 208 Volts Circuit B KW B TU H KW B TU H 240/208V Heater Amps EH3PB-A05 EH3PB-A08 EH3PB-A10 EH3PB-A15 EH3PC-A08 EH3PC-A10 EH3PC-A15 240/208-1 240/208-1 240/208-1 240/208-1 240/208-1 240/208-1 240/208-1 5 8 10 15 5 10 15 17,100 27,300 34,100 51,200 17,100 34,100 51,200 3.75 6.00 7.50 11.25 3.75 7.50 11.
FIGURE 1 UNIT DIMENSIONAL DRAWING MIS-1305 TABLE 5 DIMENSIONS OF UNIT Duct Opening (Inches) Model N o.
INSTALLATION LOCATION TYPICAL INSTALLATIONS GENERAL 1. ROOF MOUNTED – The unit is mounted on a sturdy base on the roof of the building. Return air to the unit is brought through a single return grille (grilles with built-in filters are best since they enable easy access for filter changing). Return air ducts are attached to the lower section of the front panel. Supply air is brought from the unit to attic duct work or to a furred down hall. Supply air duct is attached to the top of the front panel.
FIGURE 2 SLAB MOUNTING AT GROUND LEVEL (Above 32°F Outside Temperature) FIGURE 3 AIRFLOW AND SERVICE ACCESS CLEARANCES MIS-1185 Manual 2100-354 Page 10
FIGURE 4 ROOF TOP APPLICATION (May also be required for ground level installations) MIS-1176 FIGURE 5 ELEVATED MOUNTING PLATFORMS MIS-1183 Manual 2100-354 Page 11
Manual 2100-354 Page 12 FIGURE 6 PREFABRICATED ROOF CURB SPECIFICATIONS HEAVY GAUGE GALVANIZED WITH WOOD NAILING STRIP, WELDED/LEAKPROOF ONE PIECE CONSTRUCTION – READY TO INSTALL MIS-1177C TABLE 6 ROOF CURB DIMENSIONS R oof H ood Unit Model Model R oof Curb Model Roof Curb Details A F G 38.375 35.375 42 24.25 RHE-60 9042-004 82.375 44.125 41.125 38.375 35.375 44 31.25 PH1124* PH1224* PH1130* PH1230* PH1136* PH1236* RHE-36 9042-003 80.
FIGURE 7 FIELD FABRICATED CURBING MIS-1178A j A separate metal flashing should be installed around wood curbing. Caulk & seal all joints & weatherproof.
5. OTHER INSTALLATIONS – Many other installations are possible with the packaged heat pump. No matter what the installation, always consider the following facts: A. Insure that the discharge air is not obstructed inany way so as to cause operation difficulties. B. The indoor coil drain pan is equipped with a coupling that must be piped through a condensate drain trap to a suitable drain. C. Always mount the unit is such a position that it may be easily reached for servicing and maintenance. D.
WIRING – MAIN POWER Refer to the unit rating plate for wire sizing information and maximum fuse 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. If field installed heaters are added to the basic unit, a second separate power supply circuit will be required. The heater rating plate located adjacent to the basic unit rating plate will show the appropriate circuit ampacity fuse size, etc.
THERMOSTATS See specific wiring information for the different models, heater KWs, and voltages.
THERMOSTAT INDICATOR LAMPS The red lamp marked “EM. HT.” comes on and stays on whenever the system switch is placed in Em. Ht. position. The green lamp marked “Check” will come on if there is any problem that prevents the compressor from running when it is supposed to be. EMERGENCY HEAT POSITION The operator of the equipment must manually place the system switch in this position.
COMPRESSOR CUTOFF THERMOSTAT WIRING (5 thru 10 KW) (FIGURE 10) COMPRESSOR CUTOFF THERMOSTAT WIRING (15 thru 20 KW ) (FIGURE 11) TABLE 12 15 THRU 20 KW TABLE 11 5 thru 10 KW Model KW Volts P h ase PH11242 0,5,8 230 1 Model KW Volts P h ase PH11242 15 230 1 PH12241 0,5,10 230 1 PH12241 15 230 1 PH11301 0,5,8 230 1 PH11301 15 230 1 PH1230 0,5,10 230 1 PH1230 15 230 1 PH11361 0,5,8 230 1 PH11361 15 230 1 PH1236 0,5,10 230 1 PH1236 15 230 1 PH11422 0,5,1
START UP AND OPERATION THREE PHASE SCROLL COMPRESSOR START UP INFORMATION SEQUENCE OF OPERATION 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. compressor contactor starting the compressor and outdoor motor.
DEFROST CYCLE The defrost cycle is controlled by temperature and time on the solid state heat pump control. See Figure 12. When the outdoor temperature is in the lower 40° F temperature range or colder, the outdoor coil temperature is 32° F or below. This coil temperature is sensed by the coil sensor mounted near the bottom of the outdoor coil. Once coil temperature reaches 30° F or below, the coil sends a signal to the control logic of the heat pump control and the defrost timer will start.
TROUBLESHOOTING SOLID STATE HEAT PUMP CONTROL TROUBLESHOOTING PROCEDURE 1. Turn on AC power supply to indoor and outdoor units. 2. Turn thermostat blower switch to fan on. The indoor blower should start. (If it doesn’t, troubleshoot indoor unit and correct problem.) 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.
CHECKING TEMPERATURE SENSOR CHECK OUT 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.
SERVICE TABLE 13 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. Switching to heating cycle at 75°F or higher outside temperature may cause a nuisance trip of the manual reset high pressure switch. 3. The heat pump wall thermostats perform multiple functions.
SUCTION AND DISCHARGE TUBE BRAZING Compliant Scroll compressors have copper plated steel suction and discharge tubes. These tubes are far more rugged and less prone to leaks than copper tubes used on other compressors. Due to different thermal properties of steel and copper, brazing procedures may have to be changed from those commonly used. • • To disconnect: heat joint Areas 2 and 3 slowly and uniformly until braze material softens and the tube can be pulled out of suction fitting. (See Figure 14.
TROUBLESHOOTING ECM BLOWER MOTORS CAUTION Disconnect power from unit before removing or replacing connectors, or servicing motor. Wait at least 5 minutes after disconnection power before opening motor. SYM PTOM Motor rocks slightly w hen starting.
SYM PTOM Motor starts but runs erratically CAUSE / PROCEDURE $ Varies up and down or intermittent $ Check line voltage for variation or "sag" $ Check low voltage connections (G, Y, W, R, C) at motor; unseated pins in motor harness connectors $ Check "Bk" for erratic CFM command (in variable speed applications $ Check out system controls - thermostat? $ Perform Moisture Check $ "Hunts" or puffs" at high CRM (speed) $ Does removing panel or filter reduce "puffing"? – Reduce restriction – Reduce maximum a
PRESSURE TABLES TABLE 16 COOLING Air Temperature Entering Outdoor Coil Degrees F Model PH1124 PH1130 PH1136 Return Air Temperature Pressure 75 80 85 90 95 100 105 110 115 75 deg. D B 62 deg. WB Low S i de High Side 73 191 75 209 76 227 77 245 78 263 79 281 80 299 81 317 83 355 80 deg. D B 67 deg. WB Low S i de High Side 79 196 81 215 82 233 83 252 84 270 85 288 86 307 87 325 89 344 85 deg. D B 72 deg.
PRESSURE TABLES TABLE 18 COOLING Air Temperature Entering Outdoor Coil Degrees F Model PH1142 PH1048 PH1060 Return Air Temperature Pressure 75 80 85 90 95 100 105 110 115 75 deg. D B 62 deg. WB Low S i de High Side 74 192 75 210 77 227 78 244 79 261 80 279 81 296 82 314 83 332 80 deg. D B 67 deg. WB Low S i de High Side 79 197 80 215 82 233 83 250 84 268 85 286 87 304 88 322 89 340 85 deg. D B 72 deg.
PRESSURE TABLES TABLE 20 COOLING Air Temperature Entering Outdoor Coil Degrees F Model PH1224 PH1230 PH1236 Return Air Temperature Pressure 75 80 85 90 95 100 105 110 115 75 deg. D B 62 deg. WB Low S i de High Side 73 191 75 205 76 219 78 234 79 251 80 267 81 285 82 303 83 323 80 deg. D B 67 deg. WB Low S i de High Side 78 196 80 210 81 225 83 240 84 257 88 274 87 292 88 311 89 331 85 deg. D B 72 deg.
PRESSURE TABLES TABLE 22 COOLING Air Temperature Entering Outdoor Coil Degrees F Model PH1242 PH1248 Return Air Temperature Pressure 75 80 85 90 95 100 105 110 115 75 deg. D B 62 deg. WB Low S i de High Side 74 196 76 211 77 225 78 241 79 257 79 274 81 291 81 308 82 326 80 deg. D B 67 deg. WB Low S i de High Side 79 201 81 216 82 231 83 247 84 264 85 281 87 298 87 316 88 334 85 deg. D B 72 deg.
