Alde Compact 3030 Gebrauchsanweisung Seite 46

WARNING
Poisoning
Be sure to thoroughly dry any puddles of leaked glycol or glycol fluid. Rinse the area with water and
dry up the excess to prevent children or pets from ingesting glycol.
CAUTION
The heating system comes with glycol mixture within. If the fluid level is too low, the system must be
filled up to the correct level before using the heating system. The warranty can be voided and the
heating system may be damaged upon start-up with too little or no glycol mixture.
NOTICE
Do not mix different types of glycol, as this can cause coagulation of the glycol mixture.
8.3 Glycol fluid
The system must be filled with a mixture of deionised water and glycol.
We recommend using a high quality premixed glycol (with inhibitors) intended for aluminium heating
systems. When using concentrated glycol, the mixture must consist of 60% distilled water, or water with
no salt content, and 40% glycol. The use of tap water may cause corrosion and affect the warranty.
If the system is exposed to temperatures lower than -25°C, glycol content must be increased, but must
not exceed 50%.
NOTICE
If the glycol fluid is not replaced at appropriate intervals, there is a risk of frost damage, corrosion,
bacterial growth and/or overheating.
The glycol mixture must be changed every two years, as properties such as corrosion protection
degrade. If Alde Premium Antifreeze is used, the replacement period can be extended to max. 5 years
of normal use.
8.3.1 Refill the heating system with Glycol fluid
Glycol content should be checked at the expansion vessel
using a glycol tester before refill, to ensure that the concen-
tration of glycol in the fluid is not too high. If the fluid level
has dropped for reasons other than evaporation, check all
joints, rubber hoses, drain taps and air screws for leakage
before filling.
The glycol system is manually replenished in the expansion
vessel. When manually filling, slowly pour the glycol mixture
into the expansion vessel. The level must be approx. 1 cm
above the MIN line (Fig. 19) when the system is cold.
Vent both zones in a dual-zone system after filling; add
more glycol mixture if the glycol level drops during venting.
Vent a newly-filled heating system regularly.
46
Fig.19. Expansion vessel
Fluid level in
cold system