Ferroli TEMPRA 24 Installation, Service And User Instructions Manual page 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 see paragraph 5.04).
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 efficiency and combustion
characteristics of the boiler.
Diagram of pressures and outputs with Natural gas
and with LPG (Propane)
35
30
25
20
15
10
5
9
kW
kcal/h
X 1000
10 11 12 13 14 15 16 17
8 9 10 11 12 13 14
TEMPRA 24
18 19 20 21 22 23
15 16 17 18 19 20
Fig. 4
7