Installation Manual
SYSTEM BOILER
– TA02A101.B1203
15
REGULATING THE MAX. AND MIN. MODULATION GAS PRESSURE
To regulate the maximum gas pressure to the burner proceed as follows:
insert a gauge into the pressure socket B (fig.1).
remove the aluminium protective cap from screw A (fig.1) counter-clockwise;
turn the boiler on with the selector turned to the
winter position;
once ignited, set the "P1 MAX. HEAT" trimmer (fig.2) to the maximum and turn screw
A (fig.1) on the stabiliser clockwise to increase pressure or counter-clockwise to
decrease pressure (see the table below for calibration pressures);
on completion, screw in the aluminium cap, protecting screw A, previously removed
from the gas valve;
regulating the min. gas pressure: without removing
the gauge and with the selector set to
winter, set
the "P1 MAX. HEAT" trimmer to the minimum heat
by turning it counter-clockwise;
regulate the minimum pressure by turning the "P2
MIN. GAS" trimmer (see the table below for
calibration pressures);
on completion, set the "P1 MAX. HEAT" trimmer to
the required thermal output of the system;
remove the gauge, tighten the pressure socket B
and make sure there are no gas leaks.
N.B. The "P1 MAX. HEAT" trimmer is factory set to 80%
of the maximum nominal output during the testing stage.
When the boiler is started up for the first time is must be
regulated according to the thermal power of the system.
To make adjustments use a flat head screwdriver and
turn clockwise to increase or counter-clockwise to
decrease.
MIN. AND MAX. GAS PRESSURES
Models:
NATURAL GAS G20
Min – Max
LIQUID BUTANE GAS G30
Min – Max
LIQUID PROPANE GAS G31
Min - Max
RS 20 E / 40-60
mbar
1.5 – 10.5
6.6 – 27.5
8 – 35.6
RS 24 E / 70-90
mbar
4.2 – 13.7
5 – 26.3
6 – 33.6
D
B
10
20
30
40
A
PRESSURE GANGE
GAS VALVE VK4105G1005
C
MAX.HEAT.
P1
MIN.GAS
P2
Fig. 1
Fig. 2
Содержание RS 24 E 70/90
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