Airedale BluCube 10-48kW - Manual (Page 10)

BluCube
™
Condensing Unit
10
Condensing Units
Technical Manual : 7206188 V1.6.0_07 2014
Condenser Fan (AC) Axial fan assemblies with finger proof grille and incorporating external rotor motor
technology, to provide highly accurate discreet speed control, discharge air vertically.
The fans offer maximum performance while keeping sound levels to a minimum.
pCO5 Microprocessor (without
built-in display) 32 bit 44MHz controller with built-in PGD1 (132 x 64 pixels) with backlit keypad
Electronic Expansion Valves
(EEV)
(Heat Pump Variable Capacity) Electronic expansion valves differ from the normal thermostatic expansion valves in
their ability to maintain control of the suction superheat at reduced head pressures.
This can lead to significant energy savings particularly at reduced loading and low
ambient temperatures.
EEV step position, superheat, head pressure set points and other features can be
viewed and adjusted via the microprocessor display.
Thermostatic Expansion Valve
(Heat Pump Fixed Capacity
Only) A thermostatic expansion valve shall be fitted to control the superheat within the
system in heating mode.
Variable Head Pressure
Control Electronic head pressure controllers are fitted which modulate the fan speed to
maintain a constant condensing pressure, allowing the system to operate satisfactorily
in ambient temperatures as low as -20°C.
Refrigeration Components The following refrigeration components are fitted within the system to ensure correct
unit operation:

Suction Accumulator (Heat Pump)

4 Way Reversing Valve (Heat Pump)

Liquid Receiver (Heat Pump)

Non Return Valve (Heat Pump)

Filter Drier (supplied loose – Cooling only units)
Compressor Crankcase Heater A compressor crankcase heater is fitted to ensure that refrigerant does not condense
within the compressor. The crankcase heater must be turned on 8 hours prior to
operation of the unit.
High Pressure Switch A high pressure switch shall be fitted to protect against adverse high system
pressures.
Low Pressure Switch A low pressure switch shall be fitted to protect against adverse low system pressures.
Discharge Gas Temperature
Monitoring
(Fixed capacity units only)
A discharge gas thermostat shall be fitted to monitor and deactivate cooling / heating
if the compressor shows sign of overheating.
Panel Heater A panel heater shall be provided ensuring that the control panel does not encounter
low operating temperatures in adverse weather conditions. The panel heater
(thermostatically controlled) ensures that no condensation can form on components.
Mains Isolator A mains isolator shall be provided to enable local isolation of the power supply.