Draining The Water Heater; Servicing The Water Heater - Waeco Mobitherm MWH-020/N Montage- Und Bedienungsanleitung

MWH-20-N_60-N_EB_10s.book Seite 34 Montag, 5. Februar 2007 5:57 17

Draining the water heater

10 Draining the water heater
Caution
a
Always drain the water heater if there is a risk of freezing.
The water heater will be permanently damaged if water freezes in
it.
➤ Make sure the power is off, so that the heating cartridge cannot be
activated when the water heater is empty.
➤ Connect the water supply to the water heater.
➤ Open the pressure/drain valve by lifting the valve lever.
The water must drain directly into the keelson or another suitable place.
➤ Release the pressure control valve (if fitted) or open the hot water
connection (fig. 5 8, page 5, red rubber ring).
➤ Drain the water heater completely.
11

Servicing the water heater

Caution
e
Always take out the power plug before taking off the plastic cover.
Call in a service engineer for repairs.
➤ Regularly check the electrical connections.
➤ Regularly check that all water connections are tight.
➤ Replace any corroded screws, bolts and brackets immediately.
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Mobitherm