27
Checking the Tightness of Electrical Connections
Checking the Input Terminals and Contactors
Check the voltage and cycle at the mains connection, at the inlet terminals and at the contactors.
Interchange phases L1 and L3, if the phase sequence protector red light illuminates.
Checking the Sensor Connections
Check whether all sensors have been connected correctly.
Checking the Anti-Freeze Concentration in the Brine Circuit
Check and record anti-freeze concentration
Checking Water Flow Switch
Stop water flow with a valve on the outdoor side or indoor side pump, the controller should
display flow switch alarm AL17 each time. Adjust as required.
Checking Outdoor Side Flow Rate
Close A/C switch and hot water switch
Check the settings on the control system, and adjust so there is a heating requirement.
Check that the outdoor side and indoor side pumps are vented and if necessary help the pumps to
start.
Press the plus or minus key to check the STo temperature, ensure that the temperature corresponds
with the soil/rock temperature, which indicates the brine flow.
The indoor side water pump will start first, some minutes later the outdoor side water pump will
starts and then compressor should start within a few minutes after.
Press the plus or minus key to read STo, and measure brine inlet temperature (ET could be moved
to brine inlet pipe to measure brine inlet temp). The difference between these two temperatures
should be 2 – 5°C when the system has come into balance. A high difference indicates a low brine
flow. A low difference indicates a high brine flow. If the flow rate is too low, then increase the
pumping rate.
Particular attention should be given to the level in the brine system when initially using the heat
pump. Some topping up may be necessary.
Checking Indoor Side Flow Rate
Read the indoor side water temperature RT and ST. The difference between these two
temperatures should be 5 - 10°C when the heat pump heats the heating water without additional
heat. A high difference could depend on a low indoor side water flow. Then vent the heating
circuits further and increase the speed of indoor side water pump and heating circuit pump.
Commissioning and Adjusting
Содержание GSWW60
Страница 25: ...24 Three curves of different ST05 setting Controller...
Страница 36: ...35 Dimension Dimension...