Maintenance; Safety Valve - Danfoss DWH 200 Installation Manual

Installation Guide
Symbol explanation
1. Heat pump
10. Supply line
11. Return line
12. Cold water
13. Hot-water
18. Water heater DWH
19. Water heater DWH H 200
50. Outdoor sensor
80. Shut-off valve
83. Non-return valve
85. Air bleeding valve
86. Safety valve expansion heating system 1,5 bar
87. Safety valve cold water 9 bar (included in delivery)
89. Vacuum valve
91. Strainer (included in delivery)
94. Filler cock
96. Flexible hose (included in delivery)
100. Safety valve 1,5 bar
111. Bleed and expansion tank
113. Expansion heating system
118. Safety valve 2,5 bar (hot-water, operating)
121. Brine in
122. Brine out
150. Connector
Cold and hot water pipes as well as overflow pipes from safety valves must be made of heat resistant and corrosion-resistant material,
e.g. copper. The safety valve's overflow lines must have an open connection with the outlet and visibly flow into it in a frost free environ-
ment.
3.2

Maintenance

3.2.1

Safety valve

The safety valve is protection against the over pressure in the closed hot water tank and must therefore be regularly inspected.
• The safety valve can be checked by turning the cap until the valve lets out some water through the overflow pipe. This must be
carried out at least four times a year.
• If a safety valve does not work properly, it must be replaced. CONTACT AN AUTHORISED TECHNICIAN!
• If the safety valve is not checked regularly, the hot water tank might be damaged.
• It is quite normal for the safety valve to let out small amounts of water when the hot water tank is being charged, especially if a lot of
hot water was used previously. The opening pressure of the safety valves is not adjustable.
• The safety valve is mounted on the cold water inlet line, horizontally with its outlet opening facing downwards.
Danfoss Heating Solutions
DWH
VMBNB82J
13