Draining The Water Heater; Switching On Gas Operation; Removing The Cowl Cover - MDC XT10E 2021 Owner's Manual

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Leave the tap open to let air escape while the water heater is filling. The heater is filled when water flows out
of the tap.
Residues of frozen water can prevent filling if there is a frost. The water heater can be defrosted by switching
on the heater for a short period (max. 2 minutes). Frozen pipes can be defrosted by heating the room.
If just the cold water system is being used, without water heater, the heater tank is also filled up with water. In
order to avoid damage through frost, water must be drained by means of the drain valve, even if the heater has
not been used. As an alternative, two shut-off valves, resistant to hot water, can be fitted in front of the cold
and hot water connection.
Pressure and Temperature Relief Valve (P&T safety valve)
Risk of scalding injury from hot water and/or tampering with the P&T safety valve!
Do not actuate the P&T safety valve as long as the appliance is still hot.
Do not place a plug or reducing coupling in the discharge pipe (Fig. 2a - 4b) of the P&T safety valve.
Do not operate the water heater without a functioning P&T safety valve - this could cause an explosion.
The P&T safety valve (4) is a safety component and must
not be removed for any reason other than replacement.
The P&T safety valve is not serviceable; if defective it
must be replaced (failure to reuse an old P&T safety
valve). It must be replaced by a certified service
technician.
Tampering with the P&T safety valve will void the
warranty.
4 P&T safety valve
4a Test lever
4b Discharge pipe

Draining the Water Heater

If the vehicle is not used during periods of frost, it is essential that the Truma UltraRapid be emptied.
Disconnect power for water pump (main switch or pump switch).
Allow the appliance to cool down.
Open hot water taps in bathroom and kitchen.
Open drain valve (Fig.2 - 3). Lever in the "f" position (drain). The water heater is now drained directly to the
outside via the drain valve (3).
Check that the water has been completely drained (14 litres).

Switching On Gas Operation

Never operate the heater without water in it!
If the wall cowl is positioned close to an opening window (or hatch) – in particular directly under it – the window must
remain closed when the water heater is in use (see warning plate).

Removing The Cowl Cover

Grab the handle of the cowl cover.
Press the palm against the lid (Fig.3a - 1) while pulling the lid off the cowl (Fig.3a - 2).
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