Supplied By www.heating spares.co Tel. 0161 620 6677
19
DOMINA F 24 - 30 E
FERELLA F 24 - 30 MEL
MILOS AIR COMPACT E
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
.
Set the potentiometer
P3
(on the control card) to minimum
(clockwise).
Run the boiler in heating mode.
Adjust the minimum pressure with the screw
D
, clockwise
to decrease it and anticlockwise to increase it.
Set the potentiometer
P3
to maximum (anticlockwise).
Turn on the
TEST
function by temporarily bridging X5.
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.
Disconnect the test jumper.
N.B.
The test lasts 5 minutes. It is advisable to open 1 or 2 taps
to get rid of the excess capacity.
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 pres-
sure, it is mandatory to seal
the adjustment screw with
paint or a specific seal.
