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15. Commissioning Cont.
This boiler has been tested to the highest quality control standards.
The maximum and minimum gas pressures are already set during this quality control
process however the checking procedure must be followed to ensure maximum operat-
ing ef ciency from the boiler.
•
Remove the front panel of the case.
•
Loosen the internal screw 15 (Figure 15.4)
on the Outlet Pressure Test Point of the Gas
Valve and connect a pressure gauge using
a suitable hose.
Figure 15.4
•
Set the c.h. temperature control knob to its
maximum position. If external controls are
tted (e.g. room thermostat) ensure they
"call for heat".
•
Switch on the boiler.
•
Check the maximum gas pressure and com-
pare the value on the gauge with the value
indicated in the Section 2 on page 9 (gas
pressures at the burner).
30 SAVIO HEAT ONLY MANUAL
15.3
Checking the gas pressure at the burner:
•
Check the maximum gas ow at the gas
meter and compare the value indicated in
the section 2 on page 9 (gas ow rate).
•
Switch off the boiler.
•
Disconnect the gas modulator coil by remov-
ing the electrical connector E (Figure 15.4).
•
Switch on the boiler.
•
Check the minimum gas pressure and com-
pare the value on the gauge with the value
indicated in the Section 2 on page 9 (gas
pressures at the burner).
•
Switch off the boiler and re-connect the
electrical connector E to the modulator coil.
•
Switch on the boiler.
•
Check that the boiler lights up uniformly.
•
Switch off the boiler, turn off the hot water
taps and disconnect the pressure gauge.
Important: after the checks all of the test
points must be sealed.
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