18
Start Up
Pre-start-up checks:
• Check the entire pipe system. Ensure the system is full and the air is removed completely. Check whether
the valves are open throughout the system.
• Check the thermal insulation of the pipe work, make sure relevant pipes are appropriately insulated
(hot and cold).
• Check the power supply and distribution system. Check whether the power supply voltage is correct (240
volts), the power connection screws are tight, supply power complies with the wiring diagram and heat
pump specifications and the equipment is properly grounded.
• Press and hold on/off button on the digital controller. The water pump should start immediately. The
compressor should start shortly after. Observe and determine if there is any abnormal sound during
operation. If so stop the unit and determine the cause. The heat pump should be restarted only when
the cause has been fixed and there is no more abnormal sound.
• Check whether the input power and current of the unit are within the parameters set out in this manual
under Parameters (C1 and C7 2017 and older models and A4 and A13 on 2019 and newer). If not,
stop the heat pump and check it.
• Observe whether the outlet water temperature is normal. Should be 2-6 degrees above the inlet
temp (Parameter Ce and Cd- 2017 and older and o2 and o3- 2018 and newer )
• The parameters of the remote controller have been pre-set at the factory. We recommend that you
leave these parameters as set.
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