• Checking and changing glycol mixture. Regularly check the heating system’s uid level in the expansion tank.
With the heating system cold, the level should be about 1 cm above the minimum mark. The ethylene glycol
mixture should be changed every other year, as certain properties such as corrosion protection deteriorate over
time. If Alde Premium Antifreeze is used, the interval for changing the mixture can be extended to ve years under
normal operating conditions. Fore more information about the glycol heating uid, see chapter “1:11 glycol heating
uid”.
• Checking the LPG system. The LPG system should be checked regularly by a specialist, who will ensure that
there are no leaks from connections or hoses. LPG hoses should be changed as indicated on the date stamp, as
they tend to dry out and crack, and are liable to leak as a result. For increased safety, we recommend tting an
Alde leak detector, type 4071, as close as possible to the reducing regulator.
• Emptying the hot water heater. Freshwater in the heater should always be drained when there is risk of frost or
there is a risk of the boiler freezing. The warranty does not cover frost damage.
A frost control can be installed to reduce the risk of freezing (part no. 3010 430 or 3010 431). Fore more informa-
tion about the hot water heater, see chapter “1:7 Using the heating system”.
• Renew the air cushion. To maintain the air cushion, the hot water tank should be emptied after 10 days of use.
Fore more information about the air cushion, see chapter “1:7 Using the heating system”
• Always ush the boiler completely before using for the rst time or if it has not been used for a long period.
• Bleeding the system. Depending on how the pipes have been tted, air pockets may form when the system is
lled with glycol uid. If the pipes only warm up a metre or so from the boiler, even though the circulation pump
is operating, this is a symptom of air trapped in the system. Fore more information about bleeding the heating
system, see chapter “1:12 lling the heating system with glycol uid”.
Functions marked with a (*) are accessories, which are not installed on all vehicles,
refer to the vehicle manufacturer’s instructions.
29
GB
4. IMPORTANT INFORMATION
• Always switch off the 12 V main switch for the boiler when the vehicle is not in use.
• When washing the vehicle, do not spray water directly towards the ue.
• When camping in winter conditions, ensure the ue and exhaust air valves are kept clear of snow and ice.
• The vehicle may be heated even if the hot water heater is not lled with freshwater.
• The LPG boiler and electric elements may be operated simultaneously.
• Always renew the air cushion in the water heater after 10 days of use.
• Never allow the heating system to stand empty of glycol uid.
• The ethylene glycol mixture should be changed every other year.
• Sterilisation uids for freshwater can cause harmful corrosion to the stainless structure of the boiler. Always read
the data label on additives that are used and make sure the system is ushed of all additives before you use the
boiler.
• Be aware of hard water: Hard water is water that has a high dissolved-mineral content, particularly calcium. If the
boiler is used in a hard water area for longer periods, install a water lter.
Hard water can lead to a build-up of lime scale that can reduce the functionality of the system.
FIRE/EXPLOSION HAZARD
Close the main LPG valve in the following situations.
• When the vehicle is not intended to be used.
• The national legislation of the country you are in may require you to close the main LPG tap when the vehicle is
in trafc.
• When repairing the boiler.
• When a leak in the LPG system is suspected.
Functions marked with a (*) are accessories, which are not installed on all vehicles,
refer to the vehicle manufacturer’s instructions.
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