INSTALLATION INSTRUCTIONS SINGLE PACKAGE AIR CONDITIONERS MODELS P1124A3 P1130A2 P1136A2 P1142A3 P1148A2 P1060A1 P1224A2 P1230A1 P1236A1 P1242A1 P1248A2 Bard Manufacturing Company Bryan, Ohio 43506 Since 1914 . . .
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. 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. 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.
TABLE 2 ELECTRICAL SPECIFICATIONS Model Electric Rating – 60 Hz – Circuit A P1124A3 P1130A2 P1136A2 P1136A1-B 230/208-60-1 230/208-60-1 230/208-60-1 230/208-60-3 P1136A1-C P1142A3 460-60-3 230/208-60-1 Operating Voltage Range 197 - 253 197 - 253 197 - 253 187 - 253 414 - 506 197 - 253 Minimum Circuit Ampacity 16 21 25 18 12 29 BC SC 10 13.6 16 11 6 18.5 Field Wire Size * 12 10 8 10 14 8 Ground Wire Size 12 10 10 10 14 10 Delay Fuse – Max.
TABLE 2A ELECTRICAL SPECIFICATIONS Model Electric Rating – 60 Hz – Circuit A P1148A2 P1148A2-B 230/208-60-1 230/208-60-3 P1148A2-C P1060A1 P1060A1-B P1060A1-C 460-60-3 230/208-60-1 460-60-3 460-60-3 Operating Voltage Range 197 - 253 187 - 253 414 - 506 197 - 253 187 - 253 414 - 506 Minimum Circuit Ampacity 32 24 12 42 28 14 20.5 14.7 7 29 12 9 Field Wire Size * 8 10 12 8 8 12 Ground Wire Size 10 10 12 10 10 12 Delay Fuse – Max. ** 50 35 15 60 45 20 24.
TABLE 2B ELECTRICAL SPECIFICATIONS Model Electric Rating – 60 Hz – Circuit A P1224A2 P1230A1 P1236A1 P1236A1-B P1242A1 P1248A2 P1248A2-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 Voltage Range 197 - 253 197 - 253 197 - 253 187 - 253 197 - 253 197 - 253 187 - 253 Minimum Circuit Ampacity 15 21 25 19 30 34 23 BC SC 10 13.5 16.2 10.9 18 21 12.
Manual 2100-353 Page 6 TABLE 3 OPTIONAL FIELD INSTALLED HEATER PACKAGES ONLY TO BE USED WITH THE MODELS INDICATED Heater Package Model Volts & P h ase P1124A3 P1124A2 P1130A2 P1230A1 P1236A2 EH3PB-A05 240/208-1 S NA S NA S A EH3PB-A08 240/208-1 S NA S NA S EH3PB-A10 240/208-1 S NA S S EH3PB-A15 240/208-1 NA NA S EH3PC-A05 240/208-1 NA S EH3PC-A10 240/208-1 NA EH3PC-A15 240/208-1 EH3PB-B09 P1236A1 P1236A1-B A NA NA A A NA NA S A A S NA NA S A A NA
TABLE 4 OPTIONAL FIELD INSTALLED ELECTRIC HEATER TABLE Htr. KW & Capacity @ 240 Volts Htr. KW & Capacity @ 208 Volts Circuit B 1 2 3 Max. Over Current Protection Field P o w er Wiring Ground Wire Siz e Heater Pkg. Model No. Unit Volts P h ases KW B TU H KW B TU H 240/208V Htr. Amps Heater Min. Internal No.
FIGURE 1 DIMENSIONS OF UNITS MIS-1305 TABLE 5 DIMENSIONS OF UNITS 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) MIS-1184 FIGURE 3 AIRFLOW AND SERVICE ACCESS CLEARANCES MIS-1185 Manual 2100-353 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 2100-353 Page 11
Manual 2100-353 Page 12 FIGURE 6 PREFABRICATED ROOF CURB SPECIFICATIONS HEAVY GAUGE GALVANIZED WITH WOOD NAILING STRIP, WELDED/LEAKPROOF ONCE PIECE CONSTRUCTION – READY TO INSTALL MIS-1177C
TABLE 6 ROOF CURB DETAILS (Refer to Figure 7) R oof H ood Unit Model Model R oof Curb Model Roof Curb Details A B C D E F P1124A3 P 1224A 2 P1130A2 P 1230A 1 P1136A2 P 1236A 1 RHE-36 9042-003 80.375 40.25 P1142A3 P 1242A 1 P1148A2 P 1248A 2 P 1060A 1 RHE-60 9042-004 82.375 44.125 41.125 38.375 35.375 44 37.25 38.375 35.375 42 G H I J K L 24.25 19.125 48.188 14.75 38.125 38.25 31.25 19.125 50 14.75 42 38.
5. OTHER INSTALLATIONS – Many other installations are possible with the packaged air conditioner. No matter what the installation, always consider the following facts: A. Insure that the discharge air is not obstructed in any 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.
TABLE 9 THERMOSTAT WIRE SIZE 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.
FIGURE 9 LOW VOLTAGE WIRING MIS-1180 Manual 2100-353 Page 16
START UP AND OPERATION 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.
LOW PRESSURE SWITCH, BYPASS, AND LOCKOUT SEQUENCE ADJUSTMENTS NOTE: The low pressure switch is an optional control and the bypass and lockout sequence are part of the standard compressor control module. ADJUSTABLE DELAY-ON-MAKE AND DELAY-ON-BREAK TIMER If the low pressure switch opens for more that 120 seconds, the compressor contactor will de-energize and go into a soft lockout.
SERVICE AND TROUBLESHOOTING SERVICE HINTS FAN BLADE SETTINGS 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. Shown in Figure 10 are the correct fan blade setting dimensions for proper air delivery across the outdoor coil. 2.
– Reinsert tube into fitting. 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.
TABLE 14 PRESSURE TABLE COOLING Model P1124A3 P 1224A 2 P1130A2 P 1230A 1 P1136A2 P 1236A 1 Air Temperature Entering Outdoor Coil Degrees F Return Air Temperature Pressure 75 deg. D B 62 deg. WB Low S i de High Side 70 219 74 220 77 224 79 234 80 248 82 258 83 276 84 293 85 316 80 deg. D B 67 deg. WB Low S i de High Side 75 224 79 225 82 230 84 240 86 254 88 265 89 283 90 300 91 324 85 deg. D B 72 deg.
TABLE 14A PRESSURE TABLE COOLING Air Temperature Entering Outdoor Coil Degrees F Model P1142A3 P 1242A 1 P1148A2 P 1248A 2 P 1060A 1 Return Air Temperature Pressure 75 deg. D B 62 deg. WB Low S i de High Side 70 208 72 223 75 239 77 254 78 271 79 288 80 305 81 324 82 342 80 deg. D B 67 deg. WB Low S i de High Side 75 213 77 229 80 245 82 261 84 278 85 295 96 313 87 332 88 351 85 deg. D B 72 deg.
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
