DOMINA N 80 DGT
7
2.04 Central heating adjustment
(not normally required)
To adjust boiler heat input (thus also regulating heat output to the central heating water) simply adjust the main
burner via the electronic control board (fi g. 4 and 5 and see paragraph 5.04 page 29).
The diagrams indicate the variation in heat output to the water as burner working pressure is varied.
Adjusting boiler output to the actual requirements of the central heating system will minimise boiler cycling thus saving
fuel, varying the output has virtually no effect on the effi ciency and combustion characteristics of the boiler.
Diagram of pressures
and outputs with Natural gas
Fig. 4
Fig. 5
Diagram of pressures and outputs
with LPG (Propane)
2
3
4
5
6
7
8
9
10
11
12
13
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
8
9 10 11 12 13 14 15 16 17 18 19 20 21
kW
kcal/h
x 1000
mbar
14
kW
kcal/h
X 1000
m
b
ar
18 19 20 21 22 23
5
10
15
20
25
30
35
9 10 11 12 13 14 15 16 17
9
10
11 12 13
14
18
19 20
15
16
17
8
2.05 Domestic hot water variability characteristics
The temperature of the domestic hot water can
be varied from 40 to 55°C by adjusting the boiler
potentiometer.
Diagram of domestic hot water production
0
3
4
5
6
7
8
9
10
11
12
13
14
15
16
39
40
45
50
55
60
65
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Temperature of domestic hot water intake 15°C
Flow of domestic hot water l/min
Tem
p
eratur
e
of
d
o
mesti
c h
o
t
w
ater su
pp
ly
°
C
B
o
iler
o
ut
p
ut e
x
changed
k
cal
/1
000
Fig. 6
Summary of Contents for DOMINA N 80 DGT
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