FITTED EQUIPMENT
122
Maintenance
There is no manufacturer’s service requirement
for the Alde 3020 Compact boiler itself.
Current local regulations must be adhered
to. The installation of the boiler should be
inspected annually for gas safety.
LPG hoses should be regularly checked for
signs of damage and should be replaced, at
maximum, after 3 years of use.
Bleed air from the system when newly filled,
when the vehicle has been standing unused
for a period, and before departing on holiday.
The fluid level in the expansion tank should be
about 1 cm above the MIN mark when cool.
The heat transfer fluid (HTF) should be topped
up if below this level, to prevent a break in
circulation. Only top up with compatible HTF.
Note: Never leave the system empty of HTF.
! WARNING: Always replace the HTF in
accordance with the antifreeze product’s
lifespan. If in any doubt, replace the HTF
after 2 years.
Failure to maintain the condition of HTF may
result in frost and/or corrosion damage, and is
not covered under warranty.
When the hot water cylinder is in continuous
use, it should be drained and refilled once a
month. This recreates the air cushion in the hot
water cylinder that absorbs pressure surges.
Winter
When camping in the winter, always ensure the
flue terminal remains unobstructed by snow
and ice. Extensions for roof flue terminals, and
condensate spouts for side flue terminals are
available from Alde.
Check the strength of the heat transfer fluid
(HTF) with a hydrometer and/or refractometer.
It should measure 50% ethylene glycol
antifreeze, or -35-37°C.
The central heating can still be used with no
freshwater in the system. The air in the hot
water cylinder is heated but no damage can
result.
! WARNING: Always drain down and
completely empty the hot water cylinder
when there is risk of frost, unless the vehicle
is explicitly stated to be self-winterising by
the vehicle manufacturer.
If camping in temperatures below -10°C,
consider carrying spare parts in the event
of an emergency. Alde recommends a 12v
circulation pump for the expansion tank (with
cabling), a PCB, and 4–5 litres of ready to use
antifreeze. These spare parts should be kept
well insulated and in the warmest part of the
vehicle; for example, in the wardrobe, near to
the expansion tank pipes.
If storing the vehicle for winter, ensure the flue
terminal is covered to prevent pest animals
nesting in the flue.
If using the light duty 12v circulation pump in
the expansion tank, do not leave the central
heating on over winter, even with a low desired
temperature set.
Note: Air the vehicle over winter without
wearing out the light duty pump. Use
the programmable Alde control panel to
automatically heat the vehicle for 24 hours,
once a week.
ALDE HEATING OPERATING INSTRUCTIONS
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General