Alarko HARMONY - D, Инструкции по установке и обслуживанию, Страница: 44 / 72

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IMPORTANT NOTES ON FLUE SYSTEMS
a) Flue terminal must be fitted with 3% downward inclination towards
outside to prevent penetration of rain.
b) Failing to comply with these instructions will invalidate the appliance
certification and therefore may contravene the appropriate EC legisla -
tion and local statutory requirements.
c) After the flue system is completely installed, check that the terminal
is correctly located on the outside wall (visibly check from outside the
building where possible) and check if the wall seals provide good seal-
ing.
4.3 COMPONENTS & SYSTEM
Note: The Harmony_D boilers must only be installed with a sealed sys-
tem.
1) The appliance must not be operated without the system being full of
water, properly vented and pressurized.
2) The pressure relief valve operates at 3 bar (43.5 lb/in²). The dis-
charge must be directed away from electrical components or where
it might be a hazard to the user.
3) The pressure gauge indicates the system pressure, which must be
maintained.
4) The 6.0 liter expansion vessel is charged to 1.2 bar.
5) With an initial system pressure of 1.0 bar, a system capacity of
about 120 liters can be accommodated. The charge pressure can
be increased but this will cause a decrease in system volume.
6) If the system water content is excessive, then an additional expan-
sion vessel should be connected into the system as close as pos-
sible to the central heating return connection of the boiler, (see Fig.
23).
7) Water loss must be replaced.