Adjustment Of Useful C.h. Output - Biasi RIVA COMPACT HE M96.24SM/C User Manual And Installation Instructions

Commissioning
To adjust the ignition gas pressure, set dip --- switch
"3" (Fig. 7.8) to the OFF position and adjust poten-
tiometer marked "ACC" with a screwdriver until
correct ignition gas pressure is obtained.
Fig. 7.8
Refer to the table gas pressures at the burner in the
sections 4.6 or 4.7 for appropriate value.
7 Having finished this procedure, reset dip ---
switch "3" to the ON position.
7.9 Adjustment of useful c.h.
output
If the burner function selector (dipswitch number
4 on the main P .C.B.) is set to the 'ON' position it
will activate the re--- ignition delay period of ap-
proximately 4 minutes. When dipswitch number 4
is set to the 'OFF' position there will be approxi-
mately 30 seconds re--- ignition delay period.
Whilst checking or adjusting the c.h. output, and
fault finding on the boiler it may be necessary to
switch the re--- ignition delay mechanism (dips-
witch 4) to the 'OFF' position.
Refer to the diagrams shown in Fig. 7.9, Fig. 7.10
or Fig. 7.11 and select the correct central heating
output gas pressure to meet with the central heat-
ing system requirements.
With the boiler operating in c.h. mode, use a suit-
able screwdriver to turn the adjustment potentio-
meter marked "RISC" (Fig. 7.8).
Rotating the potentiometer anti--- clockwise re-
duces the maximum supply current to the gas
modulator device, and thus reduces the gas pres-
sure to the burner.
34
+
RISC
+
ACC
ON
1 2 3
4
OFF
Fig. 7.9
Fig. 7.10
kW
29
27
25
23
21
19
17
15
13
11
9
1 2 3 4 5
M96.24SM/...
M96.28SM/... M96.28SR/...
kW
28
26
24
22
20
18
16
14
12
10
5 7 9 11 13 15 17 19 21 23 25 27 29
M96.24SM/...
M96.28SM/... M96.28SR/...
Natural (G20)
6 7 8 9 10 11
mbar
Butane (G30)
mbar