en
24
HR i
: A1002237 - 661Y1300 • B
EN
NL
ES
IT
DE
PL
RU
FR
EN
MAINTENANCE
BRINGING BACK INTO SERVICE AFTER MAINTENANCE
Refer to chapter "Starting Up"
DRAINING THE DHW TANK (Figure 4)
To drain the hot water heater’s DHW tank:
1.
Open fully a hot water tap (
3
) for at least 60 minutes to make sure the DHW tank has cooled
down sufficiently.
2.
Close the filling valve (
1
) and the stop valves (5).
3.
Connect the drain valve (
2
) to the sewer using a flexible hose.
4.
Open the drain valve (
2
) and drain the water from the DHW tank to the sewer.
5.
To accelerate the tank’s drainage, open a hot water tap located in the DHW circuit.
6.
Opening the safety group valve (4) might help accelerate drainage.
7.
Close the drain valve (
2
), the hot water tap (
3
) and safety valve (
4
) after having drained the
DHW tank.
Figure 4
1
2
5
4
3
5
Cold water
Hot water
