FILLING THE SYSTEM WITH
GLYCOL FLUID
NB ! Any vessels used to carry the uid
must be spotlessly clean and the pipes
in the system must be free of contami-
nation. This will prevent the growth of
bacteria in the system. The system is
lled through the expansion tank, either
manually or using the Alde lling pump
which both tops up and bleeds the sys-
tem. For manual lling, unfasten the nut
(R). Slowly pour the glycol mixture into
the tank. Bleed the system. Top up with
more liquid if the level has fallen after
bleeding. Bleed a newly-lled system
regularly during the rst days the heating
system is in operation.
BLEEDING THE SYSTEM
Depending on how the pipes have been
tted, air pockets may form when the
system is lled with glycol uid.
A sign that there is air trapped in the
system is that the heat released into the
pipes only extends a metre or so from
the boiler even though the circulation
pump is operating.
In newly-lled systems, small air bubbles
can form in the expansion tank, creat-
ing a murmuring sound. If the circulation
pump is stopped for a few seconds, the
bubbles will disappear.
Pressure
The LPG burner usually works at a lower
pressure than that in the cylinder. Low
pressure (0-50 mbar) and intermediate
pressure (50 mbar- 2.0 bar) are created
by allowing the gas to pass through a
reduction valve. High pressure (over 2.0
bar) is unreduced pressure mainly used
in camping equipment. Low pressure
and intermediate pressure are always
reduced pressure.
FAULT FINDING
The boiler does not start
No LPG? 1.
Is the main tap fully open?2.
If the boiler has not been operated 3.
for some time, or if the gas cylinder
has been changed, it may take longer
than normal to light the boiler.
Check that the boiler is connected to 4.
the electricity supply (> 11V).
Check that the fuse for the boiler is 5.
intact.
Check whether the electric connec-6.
tions on the boiler are securely in
position.
Check the type and supply of LPG.7.
If this do not help, please contact 8.
serviceplace for help.
Emergency start
1. Disconnect 12V and the cable to the
panel on the heater.
2. Connect a cable between 2 and 9 in
the contact device (on the heater).
3. Connect 12V to the heater.
Now the heater starts with gas and
1kW. (Regulation of room temperature
does not function, constant pump
operation).
The heating cartridge is not
working
Check that there is an electricity sup-1.
ply (230V ~) to the heating cartridge.
Check that the relays tted to the 2.
boiler come on (a slight click can be
heard from the relays when the heat-
ing cartridge is switched on at the
control panel).
If none of the above helps, contact a 3.
service workshop.
WARRANTY
Alde’s warranty is valid for one year
from the date of delivery and only covers
materials or manufacturing faults, pro-
vided that the directions for installation
and use have been followed.
The warranty does not cover frost dam-
age.
NB! Only genuine Alde parts should be
used as replacement parts.
Bleeding:
If a bleeder screw is tted to the outgoing
pipe, open this bleeder screw and leave
it open until it starts to discharge water.
If the boiler is tted with an automatic
bleeder, there is no need to bleed it man-
ually. Start the LPG boiler. The circulation
pump should be switched off.
Open the remaining bleeder screws in
the system (please refer to the instruc-
tion manual of the boat for their loca-
tions). Leave the bleeder screws open
until they start discharging uid, and then
close them. Start the circulation pump
and let it run for a while. Check that the
pipes and radiators around the boat are
heating up.
ABOUT LPG
The properties of LPG
LPG is a petroleum product, formally
known as “liquid petroleum gas”. It is
mainly made up of propane and butane
gas. The advantage of propane is that it
remains gaseous at temperatures as low
as -40°, while butane loses effectiveness
at +10°C. For this reason use only pro-
pane when available.
The cylinders contain LPG both in liquid
and gaseous form. When the cylinders
are lled, the pressure turns the gas
into liquid. When the cylinder valve is
opened, the LPG becomes a gas again.
The risk involved in using LPG is that
any leaking gas may ignite and explode.
Since LPG is heavier than air, any leak-
ing gas will collect at the lowest point.
LPG contains no toxic substances, but
breathing in concentrated gas may have
a certain anaesthetising effect, and can
also result in shortness of breath and
symptoms of suffocation. These symp-
toms quickly disappear if the sufferer
breathes in ordinary air or oxygen.
Naturally, it is inadvisable to inhale either
LPG or exhaust fumes. To make it easier
to detect gas leaks, a substance with a
distinctly rank smell has been added.
Combustion
Complete combustion of LPG only gen-
erates carbon dioxide (CO2) and water
vapour, just like the air we exhale.
A good supply of air is essential to
ensure complete combustion. The ame
should burn with a weak blue colour,
the centre of the ame should be blue/
green. LPG is extremely environmentally
compatible and does not generate any
soot during complete combustion. It can
be stored in cylinders for an unlimited
time period, without any deterioration of
quality.
R
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