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Installation, operation and maintenance instructions - VMGFE102
Unit start-up
Water pump control has been properly interlocked with the heat pump
Oil level is correct
Compressor crankcase heaters have been energised for 12 hours
Unit has been leak checked (including fi ttings)
Locate, repair, and report any refrigerant leaks
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Check voltage imbalance: AB........................ AC ....................... BC ......................
Average voltage = ............................................ (see installation instructions)
Maximum deviation = .................................... (see installation instructions)
Voltage imbalance = ....................................... (see installation instructions) .
Voltage imbalance is less than 2%
WARNING: Do not start the heat pump if voltage imbalance is greater than 2%. Contact local power company for assistance.
All incoming power voltage is within rated voltage range
Check water heat exchanger water loop
Water loop volume
= ...................
(litres)
Calculated volume
= ...................
(litres)
3.25 litres/nominal kW capacity for air conditioning
6.5 litres/nominal kW capacity for process cooling
Proper loop volume established
Proper loop corrosion inhibitor included .................litres of ..................................
Proper loop freeze protection included (if required) ........................... litres of .....................................
Water piping includes electric tape heater up to the water heat exchanger
Return water piping is equipped with a screen fi lter with a mesh size of 1.2 mm
Check pressure drop across the unit water heat exchanger (without hydronic module) or the external static pressure
(with hydronic module)
Entering water heat exchanger = ............... (kPa)
Leaving water heat exchanger = ................ (kPa)
Pressure drop (entering - leaving) = .......... (kPa)
WARNING (unit without hydronic module): Plot the pressure drop on the water heat exchanger fl ow/pressure drop curve to determine
the fl ow rate in l/s at the nominal operating conditions for the installation. For units with hydronic module, a fl ow rate
indication is displayed by the unit control (consulter the AR05 017-160 control manual).
Flow rate from the pressure drop curve, l/s = ..................
Nominal fl ow rate, l/s = .............................
The fl ow rate in l/s is higher than the minimum unit fl ow rate
The fl ow rate in l/s corresponds to the specifi cation of .............................(l/s)
