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R1K 25 RAIN - RAD - ING - Man.Inst. - 1901.1_SK.2_firm.L224C_AHS
1 Riempimento
dell'impianto_MIAH4_R1K_RAIN_SIF
ONE
REC
APLAST_AHS_EN
1. INSTALLATION
INST
ALLER
1.1.11. SYSTEM FILLING
WARNING
For system filling use only clean tap water.
WARNING
If the system is filled by adding ethylene
glycol-type chemical agents you have to install on
the loading system a hydraulic trip unit in order to
separate the heating circuit from the domestic circuit.
Before powering up the boiler, fill the system as
follows:
1. Make sure the circulator is not blocked;
2. slightly loosen the cap of the circulator auto
air vent (1-fig. 1) to release the air from the
system;
3. slightly loosen the cap of the auto air vent
placed on the top of the condensing block (fig.
3) to release the air form the top of the system;
4. open the feeding tap “R” (fig. 2);
5. release all the air;
6. use pressure gauge “M” (fig. 2) to make sure
that the system pressure reaches 1.2 bar (fig.
4);
7. after performing this operation, make sure that
the loading tap “R” (fig. 2) is properly closed.
8. Unscrew the circulator cap (2-fig.1) to release
any air bubbles and close it to prevent water
leakage;
2
1
R
M
fig. 1
fig. 2
fig. 3
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