Alde Compact 3030 Gebrauchsanweisung Seite 35

3.3 The Glycol fluid in the heating system
• Never leave the heating system without glycol mixture.
• Always maintain the correct amount of glycol mixture in the heating system.
• The glycol mixture should be replaced every two years, or as recommended by manufacturers, as
properties such as corrosion protection deteriorate over time. If the glycol fluid is not replaced at
appropriate intervals, there is a risk of frost damage, corrosion, bacterial growth and/or overheating.
If Alde Premium Antifreeze is used, the replacement period can be extended to max. 5 years of
normal use.
• Air pockets can form in the system; a sign of the formation of air pockets is that the pipes only heat up
along the first 1-2 metres proximal to the boiler, even though the circulation pump is running. For more
information on aeration of the heating system, see section 8.4 Bleeding of the heating system.
3.4. External factors that may affect the heating system
• Cleaning fluids for the water system should be used with care as they may cause corrosion of the
stainless steel parts of the heating system. Make sure that the detergent you are using works for
stainless steel systems. Rinse the system thoroughly before using the heating system again.
• Take note of hard water. Hard water is water that has high levels of minerals, chlorine, lime, and salt.
If the boiler is being used in a region with hard water, install a water filter. Hard water can cause lime
deposits that may cause impaired function and rust formation.
• When washing the vehicle, do not rinse the flue directly. This can cause poor operation as well as
soot formation.
3.5 Convection
To make the most efficient use of waterborne heating, air must pass freely through air gaps under
the bed boxes, behind the backrests/cushions and wall cabinets. If the vehicle has e.g. fitted carpets,
check that they do not prevent air supply to the convectors. It is also important that curtains, cushions
and blankets do not prevent air circulation behind seatback cushions and wall cabinets; see Fig.1.
Fig. 1. Convection
Hot surfaces
CAUTION
Always pay attention to hot surfaces marked red when the heating system is in operation.
Alde Compact Boiler 3030/3030 Plus
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