Adjustment and control operations must be performed with the heater in operation while heating is underway
AIR CALIBRATION
Electrically disconnect the hea-
ting probe (SM) and connect
the wires to another similar
free probe. Turn the heating
potentiometer knob to the
maximum setting, remove the
knob and connect the differen-
tial manometer (+ sign) to the
air pressure intake [7 - Drawing
1].
Sequence of operations:
1)
Turn the heating power trim-
mer anticlockwise to the
bottom of the scale [B -
Drawing 2].
2)
Calibrate the air signal using
the minimum fan power
adjustment trimmer [MIN. -
Drawing 3] to obtain the
figure in mmH
2
O shown in
the table:
3)
Turn on a hot water tap to
bring the boiler up to maxi-
mum hot water power.
4)
Calibrate the air signal using
the maximum fan power
adjustment trimmer [MAX. -
Drawing 3] to obtain the
figure in mmH
2
O shown in
the table:
GAS CALIBRATION
Connect the differential mano-
meter (+ sign) with decimal
scale in mm or Pascal to the
gas intake [4 - Drawing 4].
Sequence of operations:
1)
Turn the heating power adju-
stment trimmer anticlockwi-
se to the bottom of the
scale [B - Drawing 5].
2)
Open the gas capacity step
all the way [5 - Drawing 6].
3)
Calibrate minimum gas
pressure using the OFF-SET
adjustment screw [6 -
Drawing 6] to obtain the
figure in mmH
2
O shown in
the table:
4)
Close the gas capacity step
[5 - Drawing 6] to obtain the
value in mmH
2
O shown in
the table:
5)
Turn on a hot water tap to
bring the boiler up to maxi-
mum hot water power.
6)
Calibrate the maximum gas
pressure using the gas
capacity step [5 - Drawing
6] to obtain the figure in
mmH
2
O shown in the table:
After completion of calibration operations, check CO
2
values using a combustion analyser. If discrepancies are found with respect to the
values appearing in the tables, correct as necessary:
– Use the OFFSET screw (
6 – Drawing 6
) to correct CO
2
at “MIN” output.
– Use the capacity step to correct CO
2
at “MAX” output (
5 – Drawing 6
).
30/50 BF
G20
7,6/8,0
G31
7,3/7,6
“Planet Dewy 30/50 BF”
CO
2
(Methane)
CO
2
(Propane)
“MIN” power
9,0 ±0,3
10,0 ±0,2
“MAX” power
9,0 ±0,3
10,0 ±0,2
7
Drawing 1
B
Drawing 2
30/50 BF
G20
85/95
G31
89/101
30/50 BF
G20
7,2/7,5
G31
7,3/7,6
30/50 BF
G20
77/87
G31
86/96
30/50 BF
G20
6,9/7,2
G31
7,2/7,5
Drawing 3
4
Drawing 4
B
Drawing 5
5
6
Drawing 6
GAS CONVERSION
–Close the gas cock.
–Replace the injector (pos. 30)
and the relevant gasket (pos.
45).
– Cut the specified resistance on
the fan control board.
–Test for soundness all the gas
connections using soapy water
or appropriate products.
DO NOT USE NAKED FLAMES.
–Stick onto the casing panel the
plate showing the relevant fee-
ding gas.
–Proceed with air and gas cali-
bration as described below.
28
106
16
14
28
34
35
64
65
45
57
30
29
4.4
BOILER CALIBRATION
Fig. 24
105
IT
ES
PT
GB
Summary of Contents for PLANET DEWY 30 BF
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