Supplied By www.heating spares.co Tel. 0161 620 6677
19
DOMINA PLUS F 24 - 30 E
FERELLA EXTRA F 24 - 30 MEL
Version - 09.2002
Adjusting burner pressure
Since this unit has flame modulation, there are two fixed pressure settings: the minimum and maximum, which
must be as stated in the technical data chart according to the type of gas.
·
Connect a suitable pressure gauge to pressure point "
B
"
downstream from the gas valve.
·
Disconnect the pressure compensation tube "
F
" .
·
Take off the protective cap "
C
".
·
Run the boiler in
TEST
mode (pressing RESET 3 times
consecutively within 5 sec.).
·
Set knob
2
on minimum.
·
Adjust the minimum pressure with the screw "
D
", clockwise to
decrease it and anticlockwise to increase it.
·
Set knob
2
on maximum (clockwise).
·
Adjust the maximum pressure with the screw "
E
", clockwise to
increase it and anticlockwise to decrease it.
·
Reconnect the pressure compensation tube "
F
".
·
Put the protection screw "
C
" back in.
N.B.
The test lasts 5 minutes. It is advisable to open 1 or 2 taps to
get rid of the excess capacity.
C
IN
OUT
F
E
B
A
D
COMMON
25±50V DC
80±110V DC
Key
A
Pressure point upstream
B
Pressure point downstream
C
Protection screw
D
Minimum pressure adjustment screw
E
Maximum pressure adjustment screw
F
Pressure compensation tube
After checking or
adjusting the pressure,
it is mandatory to seal the
adjustment screw with paint or
a specific seal.
kW
mbar
18
19
20
21
22
23
5
10
15
20
25
30
35
9
10
11
12
13
14
15
16
17
8
24
25
26
27
28
29
30
31
32
33
34
G31
LPG
G20
Nat. Gas
24 kW version
30kW version