HISEER VR2002, Установка, эксплуатация и обслуживание

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Commissioning and Adjusting
1. Switch Off /Disconnect the Mains Fuse
2. Check Refrigerant Circuit for Leaks.
a. Check heat pump gas pressure gauge reading for any leak.
b. Open the front door with the key. Check the heat pump interior with a
refrigerant leak detector or leak detection spray for refrigerant leaks.
3. Filling the Heating System
a. Open any installed non-return valves
b. Check the inlet pressure of diaphragm expansion tank.
c. Thoroughly flush the heating system.
d. Fill the heating system with water and check the pressure. Minimum system
pressure is 1 bar, maximum pressure is 3 bar. Only use an anti-corrosion
additive which has been approved for heat pumps with DHW heating via
single-walled heat exchangers.
e. Return the non-return valves into the operation position.
4. Checking the Diaphragm Expansion Tank and the System
Pressure
a. Drain the indoor primary side of the heat pump system and reduce pressure
until pressure gauge indicates “0”.
b. If the inlet pressure of the diaphragm expansion tank is lower than the static
system pressure, replenish with sufficient nitrogen to raise the inlet pressure
above the static system pressure.
c. Re-fill with water until the filling pressure is higher than the inlet pressure of
the diaphragm expansion tank.
d. During the initial start-up, mark this value on the pressure gauge as minimum
filling value. Only use anti-corrosion additive which has been approved for
heat pumps with DHW heating via single-walled heat exchangers.
5. Check the Function of all Safety Valves
6. Check the Water Connections for Leaks
7. Filling the Outdoor Side Circuit and Checking the Pressure
a. Fill the outdoor side circuit with brine and vent.
b. Check the circuit pressure. The pressure in outdoor side circuit should be
approx 2 bar.
c. Check and if required, adjust the inlet pressure of the diaphragm expansion
tank.
Commissioning and Adjusting