Use And Maintenance; Gas Valve - Sime DEWY EQUIPE 360 BOX Manual De Uso

4

USE AND MAINTENANCE

IT
ES
4. 1

GAS VALVE

Each single module is mass produced
GB
with gas valve model SIT 848 SIGMA
(fig. 18).
4
3
2
1
KEY
1 Upstream pressure fixture
2 Intermediate pressure fixture
3 Air signal intake
4 Downstream pressure fixture
5 Shutter
6 OFF-SET
4.2 SINGLE MODULE HEAT
POWER ADJUSTMENT
To adjust heating power by changing the
58 kW factory setting, use a screwdriver
80
5
6
Fig. 18
on the heat power trimmer (10 fig. 15).
To increase operating pressure, rotate the
trimmer clockwise, to reduce it, rotate the
trimmer counter-clockwise.
Boiler power settings can be checked by
80
70
63
60
50
40
30
20
10,9
10
5,8
0
17
22,6
10
0 20
1
7
3
4
5
8
G31
G20/G25
56,5
30 40 50 60
KEY
1 Gas valve
2 Air pressure switch
3 Fan socket (+)
4 Mixer intake (–)
2
5 Nozzle
6 Digital pressure gauge
7 Air signal intake
8 Air/gas mixer
6
observing the "∆p air" can be measured
with a digital pressure gauge connected as
indicated in fig. 19.
The resulting values must correspond to
those shown in the chart of Figure 19/a.
Potenza kW
70 Heating power (kW)
Fig. 19
Fig. 19/a