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Third Part
(edition-0106)
Control p.c.b. 11.62
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RIVA
FP
SERVICE MANUAL – REV A
5
-3
Figure 4
5
Dip-switch Selectors
The function selectors G (Figure 1) are
microswitches with which it is possible to select
the various boiler control function modes.
In Figure 5 the selectors are illustrated in the
configuration in which the boiler is set in the
factory (natural gas boiler).
1
2
3
4
ON (1)
OFF (0)
H
Gas conversion
Ignition gas pressure adjustment
Reignition frequency
Minimum gas pressure adjustmen
t
Figure 5
O
Selector 1
This forces the boiler to operate at the minimum
gas pressure in order to allow the adjustment of
the minimum gas pressure at the burner (on the
modulation operator of the gas valve).
After any adjustment operation the selector has
to be brought back to the normal position (ON).
O
Selector 2
This selects the boiler functions on the basis of
the type of gas used.
It allows the selection of the maximum supply
current given to the modulator device.
To set selector 2 correctly follow the table in
Figure 6.
Gas Suplly
Position of selector
Natural gas
ON
L.P.G.
OFF
Figure 6
O
Selector 3
This forces the functioning of the boiler in order
t
o allow the optimal gas pressure at the burner
t
o be adjusted during the ignition phase.
The adjustment is done by means of the
potentiometer I marked “ACC" (Figure 1 on page
4-1).
After the adjustment operations bring the selector
back to the normal position (ON).
gas pressure calibration
Normal
ON (1)
OFF (0)
Figure 7
O
Selector 4
This allows you to select the minimum time that
must pass between two ignitions of the burner in
c.h. function.
30 sec.
3 min.
ON (1)
OFF (0)
Figure 8
