104
IT
ES
PT
GB
4.1
D.H.W. PRODUCTION
The preparation of hot water is guaranteed
by the glass storage tank unit with magne-
sium anode for the protection of the boiler
unit and inspection flange for its control and
cleaning.
The magnesium anode must be checked
annually and substituted when it is worn.
It is advisable to place a sluice gate at the
entrance of the D.H.W. tank unit which,
apart from the total closure, allows the reg-
ulation of the supply capacity.
If the boiler does not produce hot water,
make sure that the air has been released
by pressing on the manual vents after hav-
ing switched off the main switch.
4.2
GAS VALVE
The boiler, is equipped standard with the
SIT 848 SIGMA gas valve (fig. 22).
4.3
ADJUSTMENT OF HEAT
OUTPUT FOR HEATING
To adjust boiler heat output for heating pur-
poses, i.e., modifying the setting made at the
factory which is approximately 17 kW, use a
screwdriver to adjust the heating heat out-
put trimmer (8 fig. 23).
To increase working pressure, turn the trim-
mer clockwise; to reduce pressure, turn the
trimmer counterclockwise.
To determine boiler heat output setting,
check energy consumption by observing the
meter and then compare with the values
shown in
Table 4
; or checked with a digital
pressure gauge connected (segno +) alla
presa (7 fig. 23). Compare values with
those shown in
Table 4
.
4
USE AND MAINTENANCE
TABLE 4
* The gas consumptions refer to the calorific value at standard conditions at 15°C - 1013 mbar.
Fig. 23
Fig. 22
7
B
1
2
3
4
5
6
Pressure
Variable heat output
Gas consumption*
Gas consumption*
mbar
(80-60°C)
(50-30°C)
G20
G31
kW
kW
m
3
/h
kg/h
9,18
29,2
32,2
3,17
2,33
6,37
24,1
26,7
2,64
1,94
4,08
19,2
21,2
2,12
1,55
2,30
14,3
15,8
1,59
1,17
1,11
9,5
10,5
1,06
0,78
0,80
7,6
8,4
0,85
0,62
KEY
1
Upstream pressure intake
2
Intermediate pressure intake
3
Air signal inlet (VENT)
4
Downstream pressure intake
5
Capacity step
6
OFF-SET
Summary of Contents for PLANET DEWY 30 BF
Page 31: ......
