Airedale StoreMaster 50kW - 77kW - Manual (Page 9)

Comfort STOREMASTER
™
Comfort Range
9
Technical Manual : 6678403 V1.3.0_ 02_2013
General Description
STANDARD FEATURES - EVAPORATOR SECTION
Compressor Suction gas cooled scroll compressors comprising:

Internal motor protection

Internal pressure relief

Non return valve

External discharge temperature protection

Oil sight glass

Oil heater
The compressors are mounted to the rigid galvanised heavy duty sub-frame with the use
of vibration reducing isolation.
Cooling Only Unit Single Tandem set on 1 circuit to provide 2 cooling stages.
Tandem pairs have an oil equalisation line.
Heat Pump Unit Single compressor to each circuit to provide 2 cooling stages and 2 heating stages.
Head Pressure Control -
Intelligent Modulation As standard the system is fitted with a voltage regulating fan speed controller which
allows set-point adjustment and system monitoring via the
microprocessor controller.
A pressure transducer is fitted to the liquid line which in turn feeds back the head
pressure to the microprocessor.
The head pressure can be monitored via the display keypad.
Cooling Mode The outdoor fan speed can then modulate via the controller to provide optimum control
under varying ambient conditions.
With the head pressure factory set to 22 Barg (319 psig) part load, EER values are
significantly improved, which in turn lowers energy consumption.
Heat Pump Mode The outdoor fan speed can then modulate via the controller to provide optimum control
under varying ambient conditions.
With the head pressure factory set to 35 Barg (508 psig) part load, EER values are
significantly improved, which in turn lowers energy consumption.
In heating mode head pressure is adjusted by regulating the evaporating pressure with
the outdoor axial fans.
Main Electric Isolator To ensure complete unit isolation of the electrical panel during adjustment and
maintenance a door interlocking isolator is provided as standard.