Filling And Bleeding The Water Heater And Heating System - Danfoss DHP-A Installation Manual

Installation Guide
1. Press the left button for five seconds to open the SERVICE menu.
2. In the SERVICE -> INSTALLATION -> FACTORY SET menu. Select parameters FLOOR.
If necessary; change the number of auxiliary heating steps.
1. In the SERVICE -> AUX. HEATER -> MAX STEP menu. Chose the number of auxiliary heating steps with + or -.
10.2.2 Select system solution
Further information about system solution can be found in the following chapters:
▪ Piping installation
▪ Selection of system solution and connection of external aux. heater
System solution 1
At delivery the heat pump is configured for system solution 1.
System solution 2
1. Select SERVICE -> AUX HEATER -> EXT.AUX.HEATER menu.
2. Set parameter EXT.AUX HEATER to ON.
3. Set parameter REV.V. HOT WATER to INT.
System solution 3
1. Select SERVICE -> AUX HEATER -> EXT.AUX.HEATER menu.
2. Set parameter EXT.AUX HEATER to ON.
3. Set parameter REV.V. HOT WATER to EXT.
10.2.3 Other settings
If necessary; configure settings for the following (see also SERVICE menu and the actual Installation manual):
▪ COOLING
▪ POOL
▪ SHUNT GROUP
▪ BUFFER TANK
10.3

Filling and bleeding the water heater and heating system

1. Turn off heating system circulation pump and external circulation pump.
2. Fill the water heater with cold water by opening the shut-off valve (80) on the incoming cold water pipe.
3. Bleed by opening one of the hot water taps.
4. Then fill the water heater coil and the heating system with water through the shut-off valve (80) to the return line to a pressure of
approximately 1 bar.
5. Open all heating system valves fully.
6. Bleed all heating systems and the water heater coil.
7. Refill the heating system to a pressure of approximately 1 bar.
8. Repeat the procedure until all air has been removed.
9. Check the system for leakage.
10. Leave the radiator valves fully open.
Danfoss Heating Solutions
Domestic heat pumps
VMGFQ102
51