COMMERCIAL HOT WATER HEAT PUMPS

Al Maymanah offers Water to Water or Air to Water type Turnkey water heating solutions for high energy efficiency.

In the heat pump is a closed circuit, which is filled with the working fluid, refrigerant. This medium circulates continuously while the heat pump is running and changes its physical state. It evaporates, compresses, condenses and expands. The temperature of the working medium entering the evaporator is lower than the temperature of the source flowing through the evaporator, causing evaporation of the working medium. This vapor is compressed to a higher pressure and a higher temperature. This saturated vapor enters the condenser where it gives off useful heat. The liquid working medium already expands through the injection valve to steam temperature and pressure. The working fluid returns to the evaporator and the cycle is repeated.

HEAT PUMP COMPONENTS

FRAME

Self-supporting, galvanized steel frame coated with polyester powder paint.

COMPRESSORS

Hermetic “scroll” type with crankcase heater for overload protection. The compressors are mounted on rubber shock absorbers.

EVAPORATOR

Braze welded plate to plate type.

This series is an independent refrigerant circuits and a water circuit. The insulation is with a flexible closed-cell lining. It is advisable to fit a differential pressure switch which will stop the unit in case there is no water circulation on the plate to plate evaporator.

CONDENSER

Braze welded plate to plate type. This series is an independent refrigerant circuits and a water circuit. The insulation is with a flexible closed-cell lining.

REFRIGERANT CIRCUIT

Each unit include: filter dryer, sight glass, thermostatic expansion valve, service valve. To protect the refrigerant circuit the following devices are fitted: manual reset high pressure switch, automatic reset low pressure switch, antifreeze thermostat.

ELECTRICAL BOARD

Weather proof type protected to IP54 standard.

It Includes: main circuit automatic breaker switch with door locking device, main fuses, compressor contactor, auxiliary circuits transformer. Microprocessor to automatically control the unit with a display to indicate the functions as well as alarm conditions.