Starting Up The Boiler - PENSOTTI PCH 50B-H Instruction Manual

4.5 Starting up the boiler

Once the system has been filled,
proceed as follows:
Check that the exhaust flue is free
of obstructions and correctly
connected to the boiler;
Switch on the power supply to the
appliance;
Open the gas isolation valve;
Place switch 1 in the ON position
(see 2.7 "Control Panel"), after a
few seconds the circulating pump
will start to run;
Use button 6 to set the D.H.W, HEAT or D.H.W./HEAT function.
The symbols
boiler is working;
The automatic ignition system will then light the burner. This
operation is repeated for 3 times. It may however be necessary to
repeat the operation in order to eliminate all the air from the gas
pipes. To repeat the operation, wait approximately three minutes
before re-attempting to light the boiler. To reset the boiler Switch
off switch 1 (see 2.7 "Control Panel") and switch it back on again
and repeat the lighting procedure;
With the boiler ignited, if the system still emits noises, the
operations must be repeated until all the air has been removed
from the gas piping;
Check the water pressure in the system. If the pressure has
fallen, introduce water into the appliance until the code "H2O"
disappears on the display and the pressure gauge reads in the
Green section of the gauge (14.5 psi = 1 bar) on completion;
Check gas pressure at gas valve inlet pressure tap. SEE Fig 2.
Set gas pressure to proper level at the regulator (Refer to section
2.1 Technical Data). Gas pressure adjustments must be
performed while the appliance is in "Flue Test Function" mode
(maximum firing rate). Do NOT make any adjustments to the gas valve
itself.
Unscrew the plug and insert an analyser in the exhaust sampling
point PF, SEE Fig. 1, (air intake manifold is missing in the drawing
to provide a clear view of the V screw) to check the CO2 value.
Make sure that the value complies with that reported in table 1
while the appliance is in "Flue Test Function" mode (during a heat
cycle press and hold the "S" button until "07" starts flashing on the
screen);
If the CO2 value does not correspond to the specified value, adjust
screw V (see fig. 1) on the venturi clockwise to reduce the CO2 value or
counter-clockwise to increase it
REGULATION INSTRUCTIONS
Table n°1
will light up (fixed light) to indicate that the
;
Gas type
Natural Gas - G20
Liquid Propane Gas - G 31
Inlet Pressure Tap
CO
2
9.3
11
PF
Fig
Fig 1.
. 1
Fig 2.
%
V
40