Airedale BluCube 10-48kW - Manual (Page 64)

BluCube
™
Condensing Unit
64
Condensing Units
Installation and Maintenance Manual : 7222094 11/2013
Commissioning
GENERAL The following commissioning information is based on a complete matched Airedale
system using R410A refrigerant.
Pre-Start Checks Once the whole system has been installed it is most important that the following pre-start
checks are made:-
GENERAL 1 The unit condition is satisfactory.
2 All pipework is complete and insulated where necessary.
Electrical 1 All electrical connections (both mains and control) are properly terminated.
2 The power supply is of the correct voltage and frequency.
3 External fuses/circuit breakers are of the correct rating.
4 The units are properly earthed in accordance with current regulations.
5 All pipework is earth bonded as required.
6 Check that there is a supply to the crankcase heater (if fitted) and ensure this is
switched on for a minimum of 8 hours prior to the unit operation.
Refrigeration 1 The unit condition is satisfactory.
2 All pipework is complete and insulated where necessary.
3 All fans are able to rotate freely.
4 The system has been evacuated correctly.
5 Check the operation of the high and low pressure switch settings. These should be
as follows:-
HIGH PRESSURE SWITCH - 40.25 Bar CUT OUT
LOW PRESSURE SWITCH - 0.5 Bar - CUT OUT
2.5 Bar - CUT IN
6 The low pressure switch is automatically reset. The high pressure switch must be
reset by either switching the unit off/on at the isolator, or de-energising the
compressor signal from the indoor unit.
Fan Speed / head
pressure control The head pressure control, allows control to be achieved in ambients down to -20°C.
Defrost Control Defrost is controlled by software (user defined) via a coil temperature sensor.