Heat pumps AIR / WATER
Operation manual
7
documentation
of the accumulation vessel, service water storage tanks
, which is part of the
supply of the vessels.
The tanks are designed for accumulation of domestic hot water and as drinking
water storage tanks. For water requirements, see 2.3.1 Water quality and
volume.
The container shall not be put into service and operated without a fully functioning
safety
valve
. The maximum possible operating pressure of the vessel is 0.6 MPa.
Occasional leakage of water from the safety valve during hot water heating is a
normal phenomenon caused by thermal expansion of water. Permanent leakage
of water indicates a defective safety valve and causes large energy losses.
If the system is equipped with full service water heating and the service water
tank is not filled with water, it is necessary to disconnect the service water
circulation pump from the power supply, otherwise it may be damaged!!