Alde COMFORT 2923 Instructions D'emploi page 14

thermostat knob has been released the boiler has not ignited.
Press the thermostat knob down again and repeat the star-
ting procedure as above, but hold it down a little longer.
7. You can also check through the window in the lower front
plate whether the boiler is lit.
Should the boiler go out, turn the thermostat knob to stop
position (see fig 3). Wait 3 minutes and repeat the starting
procedure.
The boiler is equipped with automatic reignition, which means
that if it goes out for some reason, it attempts to restart for about
20 seconds (until the safety cut-out has cut the gas supply).
Should the gas run out while the boiler is in operation, the war-
ning light will start flashing and continue on until the boiler is
shut down or restarted.
2:3 Shutting down the LPG boiler
1. Turn the thermostat knob clockwise to stop position (see fig
3). After about 20 seconds, a click should be heard from the
gas valve, which means that the safety cut-out has closed.
2. Stop the circulation pump on the control panel.
3. Close the service tap for the LPG.
NB. When the boiler has gone out, it must not be reignited
until 3 minutes have elapsed.
2:4 Setting for maximum comfort
For maximum comfort and economy, it is important to set the
right water temperature in the system. At low outside tempe-
ratures, a higher water temperature is required than at more
normal temperatures. The ideal setting on the thermostat knob
is when the circulation pump runs about 75% of the time.
When heating a very cold boiler, the thermostat knob should
not be set to maximum temperature imediately, but at an inter-
mediate position for the first 10 minutes.
The various figures on the thermostat knob represent the
number of degrees of the water temperature in the boiler as
per fig 4.
When it is extremely cold, the gas boiler and the immersion
heater can be run at the same time. This means that maximum
power is obtained from the heating system.
When the heating system is used at a high altitude, the boiling
point of the liquid mixture changes. In this case the system
temperature should be lowered as per fig 5.
In order to utilize the principle of water-born heat in the best
possible way, it is important that air can pass freely under
beds and behind back cushions. If the caravan has a fitted
carpet, for example, ensure that the carpet does not cover the
intake hole for the convectors. It is equally important that the
cushions and blankets do not prevent air circulation behind
the back cushions.
2:5 Setting the room temperature
The temperature required inside the caravan should be set on
the knob of the room thermostat, which is graduated between
5 and 30 °C.
2:6 Circulation pump
In order to make the heated glycol water circulate, some form
of pump is required. In the expansion vessel of the LPG boiler
a 12-volt circulation pump is fitted as standard. The boiler can
also be equipped with an immersion heater with a 230-volt cir-
culation pump. The choice of which pump to use, and whether
it is to run constantly or be interrupted by the room thermostat,
is made on the boilerʼs control panel.
14
GB
2:7 Electrical heating
If the immersion heater is fitted on the boiler it can only be used
if you have access to 230 volts ~. The power output is 1000
and 2000 watts respectively. Choice of power is made on the
boilerʼs control panel.
Inside the immersion heaterʼs protective cover, there are two
thermostats. One ensures that the immersion heater maintains
an operating temperature of around 80
as overheating protection, which cuts the current automatically
if the immersion heater boils for some reason. If the overheating
protection triggers, it can be reset by pressing in the overheat
reset button on the side of the immersion heater (see fig 6A).
Make sure that textiles and other inflammable material cannot
come into contact with the immersion heater.
NB. All electrical work on the immersion heater must be
performed by an authorized person.
3:0 External start
(applies only if the immersion heater is fitted).
Do you want the caravan to be heated when you arrive?
If so, your neighbour or the warden can start the heating without
having to enter the caravan. However, your boiler must be fitted
with an immersion heater and there must be a battery eliminator
(art. no. 2921 520) connected to the boiler.
How to perform an external start:
1. Plug the battery eliminator into a 230-volt socket.
2. Plug the 12-volt contact into the power intake on the boilerʼs
control panel (see fig 1 J).
3. Select power and circulation pump on the control panel.
4. Switch off the main switch in the caravan.
5. Disconnect the 230-volt cable from the external power
supply.
6. When you want the heating to start up, reconnect the 230-volt
cable. The immersion heater and the circulation pump will
then start up thanks to the battery eliminator transforming
down the voltage to 12 volts.
4:0 Water heater
The LPG boiler can be equipped with a stainless steel water
heater, with a volume of 7 litres of stored fresh water. A maxi-
mum capacity of about 12.5 litres of hot water at 40
obtained.
When the water heater is to be used, the LPG boiler should
be started about 20 minutes in advance, and run at maximum
boiler temperature to obtain the maximum amount of hot wa-
ter. If an immersion heater is used instead of gas, the heating
period is longer.
Always flush out the water heater before it is used, particularly
when it has not been used for a some time.
NB. Although the water heater is protected against frost,
fresh water in the heater must always be drained out when
there is risk of frost and the vehicle is not in use.
Drain the heater like this:
Empty the fresh water tank. Open the drain cock on the water
pipe (fig 6 b), and the air screw (fig 6 c) on the heater and empty
out the water in the heater. If there is no drain cock, release the
hose from the nipple on the heater instead. Allow it to stand like
this until you use the vehicle again.
If the vehicle is equipped with a pressure-controlled pump,
it must be switched on. Drain the fresh watertank. Open the
water taps and empty the fresh water system. Switch off the
pump. Open the drain cock on the water pipe (fig 6 b), and the
C while the other acts
°
C can be
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