Charging The Boiler; Calibration Of Pump Pressure; Calibration Of Water Pressure In The Boiler - La San Marco 95 SERIES Use And Maintenance Manual

I N S T R U C T I O N S F O R A U T H O R I Z E D I N S T A L L E R
1° UNIT
Table 1 – Adjusting the primary air
Gas 2 UNITS
LPG (G30/G31) L = 8 mm
Nat. gas (G20) L = 4 mm
Qnr = Rated heat flow
Qnr = Reduced rated heat flow
After having verified the proper operation, replace the settings tag on the appliance with the one for the new type of gas that is
provided with the standard kit containing the newly installed gas nozzle.
Safety devices on appliance (manually reset)
The appliance is provided with two safety devices that shut off the gas flow if the flame accidentally goes out.
1 - Thermocouple (52):
The thermocouple operates on the valve (51), whose probe (52) must be licked by the flame from the burner (50). If the probe
is not enveloped by the flame, the gas flow will be automatically shut off.
2 - Thermostat (59):
The thermostat, placed in contact with the boiler, operates on the valve (51); when the thermostat sensor on the boiler reads
140°C, the gas flow will be automatically shut off.
The burner can be re-ignited with the procedure described above only after the boiler body has cooled to 110°C. Following the
activation of one of the two safety devices, try re-igniting the burner with the procedure already described.
ATTENTION
If the malfunction persists, and the burner consequently continues to go off, contact the nearest authorized Service outlet,
which will provide to eliminate the cause of the malfunction.
2° UNIT
3 UNITS 4 UNITS
L = 10 mm L = 12 mm
L = 4 mm L = 4 mm
59
52
Fig.C
L
55
56
55
57
Table 2 – Nozzle diameters in 100/mm
Gas 2 UNITS
LPG (G30/G31) 40
Nat. gas (G20) 60 X
Qn (kW) 0.75
Qnr (kW) N.A.
50
Fig.A
Fig.B
OFF ON
51
58
53
3 UNITS 4 UNITS
55 65
81 X 90 X
1.45 1.9
1.0 1.3
39