Carrier 40QA024-060 Installation, Start-up And Service Instructions Manual

Contents

2Table 1 — System Matches*Units must be field reconfigured for 1 1/ 2 ton (18,000 Btuh) operation. See Before Installation sec-tion on page 3 for details.NOTE: Numbers in ( ) indicate quantities when there is more than one fan coil unit in the system.Ensure unit operation within the application guidelinesshown in Table 2. When installing the outdoor unit, for coolingoperation when the outdoor-air temperature is below 55 F, thefollowing accessories are required:• low ambient kit• crankcase heater• winter start kit• isolation relay (38QRR heat pump units only)This will provide cooling operation down to 40 F ambienttemperature. For operation down to –20 F ambient tempera-ture, a field-installed wind baffle will also be required.To complete installation of the system, the following itemsmust be field-supplied for connection of the indoor and outdoorunits:• refrigerant piping• condensate drain piping• thermostat• power and control wiringFor some applications, a fresh air intake, power vent fan,and/or condensate pump kit may be required.Table 2 — Application RangeLEGEND*This value is for single-zone systems and may be equipped with anaccessory low-ambient control or winter start kit that will allowoperation down to –20 F.SYSTEM TYPE INDOOR SECTION NUMBER OUTDOOR SECTION NUMBERCooling Only40QAC 38HDR-3,5,6024* 018024 024036 030036 036048 048060 060Heat Pumps40QAQ 38QRR-3,5,6024* 018024 024036 030036 036048 048060 060Heating/Cooling40QAQ 38HDR-3,5,6024* 018024 024036 030036 036048 048060 060COOLINGMaximum MinimumIndoor Outdoor Indoor Outdoor95 F DB71 F WB125 F DB 67 F DB57 F WB55 F DB*40 F DBHEATING (Heat Pump Systems Only)Maximum MinimumIndoor Outdoor Indoor Outdoor80 F DB71 F WB75 F DB65 F WB55 F DB –20 F DBDB — Dry BulbWB — Wet Bulb