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Service actions
Safety valve
The hot water coil's externally mounted safety valve
sometimes releases a little water after hot water usage.
This is because the cold water, which enters the hot
water coil, expands when heated causing the pressure
to rise and the safety valve to open.
The function of the safety valve must be checked regu-
larly. Perform checks as follows:
1. Open the valve.
2. Check that water flows through the valve.
3. Close the valve.
TIP
The safety valve is not supplied with the accu-
mulator tank. Contact your installer if you are
unsure how one checks the valve.
Emptying
AHP: The vessel is drained via docking connection
(XL19) in AHP.
AHPS: Empty the vessel via the drain valve (QM1).
AHP and AHPS: The vessel is drained via the drain valve
(QM1) in AHPS, in those cases AHP and AHPS are con-
nected.
The hot water coil in AHPS is emptied through the si-
phon (with hose) in the cold water connection (XL3).
Drain the solar coil through the siphon (with hose) on
the connection, return to solar heating system (XL14).
AHP
XL19
AHPS
QM1
XL14
XL3
AHP/AHPS
Chapter 7 |
Service
18
7 Service
Содержание AHPS
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