50HQ Horizontal Standard & Low-Temperature Water Source Heat Pump Unit Features

Carrier water source heat pumps (WSHP) are designed for quality and performance excellence over their life-time. Capacities range from ½-ton to 10-tons. Models offer cooling EERs (Energy Efficiency Ratio) to 12.2, and heating COPs (Coefficient of Performance) to 4.5, which are among the highest in the industry.

Fan motors and compressors are sound isolated, and the insulated cabinet makes unit operation even quieter. Standard safety features include: high-pressure switch, freeze protection switches, and loss-of-charge protection which consists of either a low pressure switch or a high discharge temperature switch. Each unit is tested and run at the factory to assure proper operation of all components and safety switches. All components are carefully de-signed and selected for endurance, durability, and carefree day-to-day operation. The water-to-refrigerant heat exchanger has copper inner and steel outer tubing to provide corrosion resistance protection. Cupronickel heat exchangers are available for open tower applications. The unit is shipped on a protective wooden skid with rigid corner posts held in place by plastic stretch wrap. Units are ARI (Air Conditioning & Refrigeration Institute) Standard 320-93 certified and UL (Underwriters' Laboratories) and CSA (Canadian Standards Association) listed (575 v CSA only).

The electromechanical (Weather-Source) control system provides control of the unit's compressor, reversing valve, fan, safety lockout, and re-mote LED (light-emitting diode) fault indication from a conventional wall-mounted thermostat. Program/night setback relay accepts a 24-v signal from a centrally located time clock which establishes occupied/unoccupied time periods for added energy savings.