Use And Maintenance; Gas Conversion - Sime Planet Dewy 30 BF Manuel D'utilisation

4

USE AND MAINTENANCE

4. 1

GAS CONVERSION

ENG
(fig.23)
FR
– Close the gas cock.
– Replace the injector (pos. 30) and the
relevant gasket (pos. 45).
– Cut the specified resistance on the
fan control board.
– Test for soundness all the gas
connections using soapy water or
appropriate products.
DO NOT USE NAKED FLAMES.
– Stick onto the casing panel the plate
showing the relevant feeding gas.
– Proceed with air and gas calibration
as described below.
4.2 GAS VALVE (fig.23/a)
The boiler, is equipped standard with the
SIT 848 SIGMA gas valve.
4.2. 1 Calibrating the gas valve
pressures
Measure the CO values with a combustion
2
analyzer (A).
Sequence of operations:
1) Set the boiler in position "winter" (B)
and set the potentiometer of the hea-
ting to the maximum (C), then remove
the Knob of the heating set point by pul-
ling it out.
2) Turn fully clockwise the trimmer B (D) to
light up the boiler at its maximum heat
output.
3) Identify the CO values at max. power to
2
be within the values shown on the table
below, if necessary adjust by using the
shutter (5):
MAX power
CO (Natural gas) CO
2
9.5 ±0,3
4) Turn fully anticlockwise the trimmer B
(D) to reach the boiler minimum output.
5) Identify the CO
power to be within the values shown on
the table below, if necessary adjust by
using the OFF-SET (6):
MIN power
CO (Natural gas) CO
2
9.5 ±0,3
6) Turn fully clockwise the trimmer B to
recheck the CO
mum power to be within the values
shown on the table below.
MAX power
CO (Natural gas) CO
2
9.5 ±0,3
34
(Propane)
2
10.5 ±0,3
values at minimum
2
(Propane)
2
10.5 ±0,3
values at the maxi-
2
(Propane)
2
10.5 ±0,3
28
14
16
106
28
64
57
4
3
2
1
A
C
35
34
29
30
45
65
63
5
KEY
1 Upstream pressure fixture
6
2 Intermediate pressure fixture
3 Air signal intake
4 Downstream pressure fixture
5 Shutter
6 OFF-SET
B
Dise
D
B
Fig. 23
Fig. 23/a