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4.5 PUMP PRESSURE AND AIR OUTPUT
st
■
1
STAGE ADJUSTMENT
ADJUSTMENT OF AIR SHUTTER:
Unloosen the nut (1), turn the screw (2) until the indicator (3)
reaches the position desired. Then lock the nut (1), (see fig.
14).
PRESSURE REGULATION:
This is set at 9 bar at the factory.
Should it be necessary to re-set or alter such pressure, this
can be done, by adjusting screw (7).
The pressure gauge must be mounted in place of cap
(8), (see fig. 15).
nd
2
■
STAGE ADJUSTMENT
ADJUSTMENT OF AIR SHUTTER:
Unloosen the nut (4), turn the screw (5)
until the indicator (6) reaches the posi-
tion desired.
Then lock the nut (4), (see fig. 14).
PRESSURE REGULATION:
This is set at 14 bar at the factory.
Should it be necessary to re-set or alter
such pressure, this can be done, by
adjusting screw (9).
The pressure gauge must be mounted in
place of cap (8), (see fig. 15).
When burner shuts down the air damper
automatically closes till a
max. chimney depressure of 0,5 mbar.
4.6 BURNER START-UP CYCLE
1 st stage thermostat
2 nd stage thermostat
Motor
Ignition transformer
1 st stage valve
1 st stage flame
2 nd stage valve
2 nd stage flame
Lock-out lamp
C
Lock out is indicated by a lamp on the control box (4, fig. 1, page 1).
1914
Normal
~
12s
3 – 28s
Fig. 15
Lock-out due to failure to light
~
12s
8
GB
Fig. 14
S7064
C
5s
D6040
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