5. Charge unit with R-22 refrigerant, using a volumetric- charging cylinder or accurate scale. Refer to unit rating plate for required charge. Be sure to add extra refrigerant to compensate for internal volume of filter drier. II. START-UP ADJUSTMENTS Complete the required procedures given in the Pre-Start-Up section before starting the unit. Do not jumper any safety devices when operating the unit. Do not operate the unit in Cooling mode when the outdoor temperature is below 40° F (unless acces

If wall thermostat closes during this delay, TDR is reset and fan relay remains energized. TDR is a 24-v device that operates within a range of 15-v to 30-v and draws about 0.5 amps. If the blower runs continuously instead of cycling off when the fan switch is set on AUTO, the TDR is probably defective and must be replaced. XII. LOSS OF CHARGE SWITCH The loss of charge switch is located on the outdoor liquid line. This switch contains a Schrader core depressor. This switch opens at 7 psig and cl

. . . . . . . . . . . . . . . . . . . . . . . 1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-14 I. Complete Pre-Installation Checks . . . . . . . . . . . . . . 1 II. Rig and Mount Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 1 III. Complete Refrigerant Piping Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 IV. Complete Electrical Con

n0il u , Sizes 024 thru 060 PACKAGED HEAT PUMPS & 542D060 NOTE: Installation must conform to the guidelines presented in these unit Installation Instructions. Read and become familiar with these instructions before starting installation. Models 542D and 542E Packaged Heat Pumps are fully self: contained combination heating/cooling units designed for outdoor installation. Model 542E may be installed either on a rooftop or ground level slab. Model 542D is used in conjunction with an accessory

If a substantial adjustment is indicated, determine abnormal condition in system that is causing inaccurate readings, such as insufficient airflow across either or both coils. CAUTION: If it in den-rmim-d that the problem U ;n: o\er charged or undercharged unit’when operating in the heating mode, the refrigerant system should be evacuated and recharged by adding the exact amount of R-22 refrigerant as shown on the unit rating plate. A volumetric charging cylinder or ac-.urale scale should hr us

A freeze protection thermostat (FPT) is located on the indoor coil. It detects frost build-up and turns off the compressor(s), allowing the coil to clear. Once frost has melted, the compressor can be reenergized. 11 CONTROLS (cont) Heating, Units Without Economizer — With unit main power on, set thermostat at HEAT position and desired room temperature. Set fan switch at AUTO. (on demand) or ON (continuous) position. On a drop in room temperature, heating contactor no. 1 in the thermostat closes,

These heat pump systems provide economy of operation through energy conservation. They recover heat for indoor comfort from outdoor air during the heating season and, by automatically reversing the refrigerant system, remove indoor heat and excess humidity during the cooling season. All models are ARI certified. FEATURES COMPRESSOR—Designed specifically for heat pump duty, with high energy efficiency during heating and cooling operation. Each compressor is hermetically sealed against contamina

wg) 1.4 1.6 1.8 2.0 Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 3000 874 1.60 1422 926 1.82 1613 974 2.11 1920 1012 2.41 2134 3100 880 1.68 1491 933 1.87 1656 983 2.16 1963 1017 2.44 2177 3200 888 1.77 1569 934 1.94 1718 988 2.18 1980 1025 2.47 2230 3300 897 1.86 1648 940 2.03 1853 989 2.24 2031 1032 2.53 2282 3400 907 1.97 1744 947 2.14 1946 991 2.32 2099 1038 2.57 2318 3500 916 2.07 1831 956 2.25 2039 997 2.43 2195 1043 2.64 2380 3600 926 2.18 1927 966 2.41 2134 1004 2.54 2291 1045

Check for proper grounding wires and power line phasing 548J 548J 548J if the GFCI receptacle does not trip as required. Press the RESET button to clear the tripped condition. CO8283 PRIMARY TRANSFORMER CONNECTIONS TERMINALS L1: RED +YEL H1 + H3 L2:BLU+GRA H2+H4 L1: RED H1 Splice BLU + YEL H2 + H3 L2: GRA H4 L1: RED H1 UNITVOLTAGECONNECTAS208,230240460480575 600 L2: GRA H2 Fig. 24 - --Powered Convenience Outlet Wiring Maintenance: Periodically test the GFCI receptacle by pressing the TEST button

DESCRIPTION 548J***D units are one- --piece, two- --stage heat pump units that are low profile, prewired, tested and charged at the factory. These are intended for installation on a roof curb accessory (ordered separately), or for slab mounting (for horizontal duct connections). Units are designed to accept field- --installed electric heaters. Units may be ordered with various factory- --installed options. Field- --installed accessories are also available. STANDARD FEATURES Base Unit S Puron (R-