INSTALLATION INSTRUCTIONS HIGH EFFICIENCY PACKAGED AIR CONDITIONER MODELS P1224A1 P1230A1 P1236A1 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) ....... 1 3 3 3 3 Installation Location ........................................................... 5 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.
TABLE 1 ELECTRICAL DATA Q R Rated Volts & Phases HZ Maximum External Minimum Fuses or Circuit Operating Maximum Ckt. Brk. Ampacity Voltage Unit Range Amps Ckt. A Ckt. A P1224A1 230/208-1 60 197 - 253 13.0 25 17 10 10 P1230A1 230/208-1 60 197 - 253 16.9 30 21 10 10 P1236A1 230/208-1 60 197 - 253 20.9 40 25 8 10 P1236A1-B 230/208-3 60 187 - 253 14.8 25 18 10 10 Model Q R R Field Power Wiring Ground Wire Size Ckt. A Ckt.
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.
FIGURE 1 PREFABRICATED ROOF CURB SPECIFICATIONS HEAVY GAUGE GALVANIZED WITH WOOD NAILING STRIP, WELDED/LEAKPROOF ONE PIECE CONSTRUCTION – READY TO INSTALL MIS-1177 CURB AND ROOF DETAILS Roof Curb A 9042-003 80-3/8 Roof Hood Model Air Conditioning Units B C* D E F J* H* 40-1/4 37-1/4 38-3/8 35-3/8 42 14-3/4 19-1/8 *Duct Sizing Information Return Air Dimension “C” is length Return Air Dimension “H” is width RHE36 P1224A1, P1230A1, P1236A1 Supply Air Dimension “C” is length Supply Sir D
INSTALLATION LOCATION GENERAL The unit must be located outside, or in a well ventilated area. It must not be in the space being heated or cooled. A sound absorbing material should be considered if the unit is to be installed in such a position or location that might cause transmission of sound or vibration to the living area or adjacent buildings. SLAB MOUNTING In areas where winter temperatures DO NOT go below 32° F for periods over twelve hours, the unit may be slab mounted at grade level.
FIGURE 3 ELEVATED MOUNTING PLATFORMS MIS-1183 FIGURE 4 AIRFLOW AND SERVICE ACCESS CLEARANCES MIS-1185 Manual 2100-341 Page 6
FIGURE 5 ROOF TOP APPLICATION (MAY ALSO BE REQUIRED FOR GROUND LEVEL INSTALLATIONS.
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 6 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 8 LOW VOLTAGE WIRING MIS-1180 Manual 2100-341 Page 10
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.
ALARM OUTPUT ADJUSTMENTS Alarm terminal is output connection for applications where alarm signal is desired. This terminal is powered whenever compressor is locked out due to HPC or LPC sequences as described. ADJUSTABLE DELAY-ON-MAKE AND DELAY-ON-BREAK TIMER 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.
SERVICE AND TROUBLESHOOTING 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. FIGURE 9 FAN BLADE SETTING DIMENSIONS 2. Check all power fuses or circuit breakers to be sure that they are the correct rating. Model Dimension A 3.
FIGURE 10 BRAZING DIAGRAM MIS-1179 TABLE 9 PRESSURE TABLE COOLING Air Temperature Entering Outdoor Coil Degrees F Model P1224A1 P1230A1 P1236A1 Return Air Pressure Temperature 75 80 85 90 95 100 105 110 115 75 deg. DB 62 deg. WB Low Side High Side 74 188 75 203 77 217 79 233 79 249 80 265 81 282 82 299 83 317 80 deg. DB 67 deg. WB Low Side High Side 79 193 80 208 82 223 84 239 85 255 86 272 87 289 88 307 89 325 85 deg. DB 72 deg.
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