4
Draining the water heater
If the vehicle is not used during periods of frost, it is es-
sential that the Truma UltraRapid HWS be emptied.
Disconnect power for water pump (main switch or pump switch).
Open hot water taps in bathroom and kitchen.
Open drain valve: Lever in vertical position, position (f).
The water heater is now drained directly to the outside via
the drain valve. Check that the water has been completely
drained (14 litres).
Switching on gas operation
UltraRapid
60°
70°
b
b
a
c
Fig. 3
a = Red indicator lamp “Fault”
b = Water heater “On” 60 °C or 70 °C
c = Water heater “Off”
Never operate the water heater without water in it!
If the wall cowl is positioned close to an opening window (or
hatch) – in particular directly under it – it must remain closed
when the water heater is in use (see warning plate).
Remove cowl cover.
Open gas cylinder and open stop cock valve in the gas
supply line.
Switch on water heater at the switch on the control panel (b).
When using the vehicle switches
Refer to operating instructions of the vehicle manufacturer or
see switch labels.
If there is air in the gas supply line, it may take up to a minute
before the gas is available for combustion. If the appliance
switches to “Fault” during this time, switch off the appliance
– wait 10 minutes – and switch on again!
Switching off gas operation
Switch off the water heater to position (c).
2
1
Fig. 4
If the water heater is not to be used for a longer period,
mount cowl cover (non-observance of this point can lead to
the function of the appliance being impaired through water,
dirt or insects), close stop cock valve in the gas supply line
and close the gas cylinder.
Before setting off on any journey, fit cowl cap with the
Truma UltraRapid HWS switched off. Please ensure that
it is secure and has locked into place (risk of accident). Defec-
tive cowl caps must not be used.
Always observe the operating instructions prior to
starting!
The vehicle owner is responsible for correct opera-
tion of the appliance.
Before using the product for the first time, it is essen-
tial to flush the entire water supply through with clean
warm water. Always mount the cowl cap when the water
heater is not being operated! Drain the water heater if there is
a risk of frost!
Warranty claims will not be accepted for
frost damage.
Always remove the cowl cover prior to operating the
water heater!
If connecting to a central water supply (rural or city connec-
tion) or when using more powerful pumps, a pressure reduc-
er must be used which prevents pressures of greater than
400 kPa occurring in the Truma UltraRapid HWS.
Filling the Truma UltraRapid HWS with water
Check that the drain valve in the cold water intake is closed:
Lever should be in horizontal position, position (e).
e
e
f
Fig. 2
e = Lever position “Closed”
f = Lever position “Drain”
You must operate the drain valve regularly to prevent
lime scale and to ensure that it is not blocked.
Open hot tap in bathroom or kitchen, with pre-selecting mix-
ing taps or single-lever fittings set to “hot”.
Switch on power for water pump (main switch or pump
switch).
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 de-
frosted by heating the room.
If just the cold water system is being used, without
water heater, the heater tank is also filled up with wa-
ter. 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.
Operating instructions
Summary of Contents for BGA 14
Page 15: ...Notes...
