7
Filling and bleeding
7.1
Filling and bleeding the brine circuit
1. (Point 1-4 does not apply to WW model.) Mix clean water and antifreeze ethanol
for BW heat pump use to the correct freezing point in an clean external container.
2. Use a refractometer to check the freezing point, for the brine collector circuit,
-17±2°C.
3. Use an external pump to fill the brine system. Connect the pressure side of the
pump to the filler cock.
4. Follow the instruction that comes with the filler unit.
5. (on WW model, ensure that 2 way valve is opened)
6. Start the external pump and fill the brine circuit, proceed until all air is gone.
7. 3-way valve (pull out until snap and turn counter clockwise).
8. Turn back 3-way valve and push in, let the brine circuit bleed until all air is gone.
9. Make sure you bleed any air in the extra air bleed!
Filling and bleeding the water heater and heating system
1.
Fill the water heater with cold water by opening the shut-off
valve on the incoming cold water pipe. Open one of the hot
water taps in the house.
2.
Then fill the water heater coil and the heating system with
water to a pressure of 1 bar.
3.
approximately 1 bar.
4.
Open all heating system valves fully, bleed all heating sys-
tems and the Water heater coil bleed valve on top of the wa-
ter heater.
5.
Localize the venting valve on the pipe from the heat ex-
changer and bleed it for air (see figure to the left).
6.
Refill the heating system to a pressure of approximately 1 bar.
7.
3-way valve (pull out until snap and turn counter clockwise).
8. Turn back 3-way valve and push in
.
9.
Repeat the procedure until all air has been removed.
10.
Check the system for leakage.
11.
Make sure you bleed any air in the extra air bleed!
12.
Leave the radiator/floor -heating valves fully open.
Note: As the air bleed (5) is placed on the suction side of the circu-
lation pump, the circulation pump must be off while bleeding to
avoid air ingress.
Installation Guide
Calibra Cool
Thermia AB
BWCC01IG0102
23
Содержание Calibra Cool
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