A.O. Smith dre-52 - Turn off for a Long Period; Turn off for a Short Period; Turn off the Water Heater; Temperature Setting

4 Use
4.1 Turn on the water heater
Caution
Mak
e sure that the water heater is filled with water before you turn on the water heater.
Switch the isolator between the water heater and the mains power supply on to start the
w
ater heater.
4.1.1 Temperature setting
Warning
Only qualified service engineers are allowed to change the set temper
ature.
4.2 Turn off the water heater
4.2.1 Turn off for a short period
To turn off the water heater for less than 2 months, set the water heater in the OFF mode
(see 3.2.1)
.
Note
If the w
ater heater stays in the OFF mode for more than 2 months and no water is
drained, air bubbles may be formed in the water heater. This can lead to air in the water
pipes.
4.2.2 Turn off for a long period
When the water heater needs to be turned off for more than 2 months, contact your
service and maintenance engineer to decommission the w
ater heater.
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0313851_DRE_NLUKFR, 30-03-2022 21
EN