38AQS Commercial Air-Cooled Condensing Unit Features

Carrier's 38AQS Heat Pump Systems are available in nominal capacities from 7-1/2 to 15-tons cooling and 83,000 to 164,000 Btu/hr. heating. Designed to match with Carrier's 40RMQ air handlers, these heat pump systems save energy with cooling EERs (energy efficiency ratios) as high as 9.8 and heat pump COPs (coefficient of performance) of 3.0. Utilizing Carrier's time-proven, highly reliable 06D reciprocating semi-hermetic compressors, these units are designed for long life. Carrier's 06D compressors are famous throughout the industry for their reliability. These compressors have vane-type oil pumps with positive oil pressure, an oil pressure regulating valve, class F stator windings, capacity reduction, oil level sight glass, and service valves. Through cylinder unloading, the 38AQS012 and 016 can reduce capacity during the cooling phase to reduce energy usage and improve space temperature regulation. A Cycle-LOC™ device in the 38AQS control box holds the compressor off-line if any operational or safety device trips the compressor. The unit can be reset manually at the thermostat.

For that extra measure of heat pump performance, variable refrigeration circuiting (VRC) provides improved heat transfer, higher COPs, improved reliability and faster coil defrosting. The design combines check valves and fixed-bore refrigerant metering to optimize the circuiting of the outdoor coil. This circuiting achieves the best performance possible during both the heating and cooling modes.

The latest safety standards for 38AQS008 units are assured through UL (Underwriters' Laboratories) and CUL (UL Canada) approval.