Safety valves
The water heater's safety valve sometimes releases a little water after hot
water usage. This is because the cold water, which enters the water heater
to replace the hot water, expands when heated causing the pressure to rise
and the safety valve to open.
The function of the safety valve must be checked regularly by a person com-
petent for the job. Perform checks as follows:
1.
Open the valve by turning the knob anti-clockwise carefully.
2.
Check that water flows through the valve.
3.
Close the valve by releasing it. If it does not close automatically when
released, turn it anti-clockwise slightly.
NOTE
Do not remove or adjust any components that are part of this pressurised
water heater. Contact your installer!
NOTE
If this pressurised water heater develops a fault, e.g. a flow of hot water
from the overflow pipe, turn the heat pump off and contact your installer.
NIBE™ F1245Chapter 2 | The heat pump – the heart of the house20
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