Beretta NOVELLA 55-64-71 RAP, Руководство по установке

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4.3
Final checks
Once the boiler has started up, make sure that
it shuts down and re-starts properly when the
following actions are taken:
- The boiler’s thermostat control is turned
down (fig. 4.12)
- The power switch on the control panel is
switched OFF (fig. 4.12)
- The temperature setting on the room ther-
mostat or timer is reduced (fig. 4.13)
- Make sure that the pump (if fitted) is free
and rotates in the right direction (fig. 4.14)
- Turn the mains power switch OFF and make
sure that the NOVELLA boiler shuts down
completely (fig. 4.14).
Provided all the above conditions are satis-
fied, start the boiler up again, then analyse the
combustion fumes.
Fig. 4.12
Fig. 4.13
Fig. 4.14
4.4
Settings
These boilers come pre-configured for use
with methane gas (G20), as shown by the gas
plate, and have been calibrated in the factory
using the values listed in the table (tolerance
±5 %).
If the boiler needs new settings after repairs
have been made, the gas valve changed, or
after a conversion from one gas type to
another, proceed as follows.
b
Adjustments must only be performed by
a Technical Assistance Centre.
- Remove the pressure measurement point
screw (A) from the gas valve, and connect
a pressure gauge (fig. 4.15).
4.5
Gas supply conversion
The boiler comes configured for functioning
with methane gas (G20). It can nevertheless
be converted from methane to LPG (G30/
G31) using the kits provided.
Conversion must be performed by the manu-
facturer’s Technical Assistance Service or by
authorised personnel. The boiler can be con-
verted even after installation. To do so, pro-
ceed as follows.
- Remove the front panel from the casing.
Fig. 4.16
Fig. 4.15
A= Pressure measurement point screw
B= Gas supply pressure measurement
point