baltur COMIST 180 Instructions Pour L'utilisateur page 55

Brûleurs mixtes à gaz/fioul
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own setting. The maximum pressure switch must make use of
the contact which is closed when the switch detects pressure
lower than its own setting. Minimum and maximum gas pressure
switches must be set when the burner is tested.Setting depends
on pressure detected from time to time. The pressure switches
are connected in series, therefore operation (i,e, opening of
the circuit) of the switches does not consent switch-on of the
equipment. Remember that if any of the pressure switches
operates (i.e. the circuit is opened) while burner is operating
(flame lit), the burner stops immediately. When the burner is
tested, correct pressure switch operation must be checked.
By using the adjustment devices, it can be verified whether the
pressure switch that stops the burner actually operates (i.e.
opens the circuit).
After adjusting, always check the following:
- Burner stop: open air and gas thermostats and pressure
switches.
SCHEMATIC DIAGRAM OF TWO-STAGE GAS BURNER
1
BALL VALVE
2
VIBRATION DAMPER JOINT
3
GAS FILTER
4
PRESSURE REDUCER OR STABILIZER
5
PAIR OF FLANGES
6
MINIMUM AND MAXIMUM PRESSURE SWITCHES
7
RELIEF VALVE
8
SEAL CONTROL DEVICE AND RELATIVE DW PRESSURE SWITCH
- locking": shadow the photocell (UV). To unblock, push the
appropriate button.
The job of the installer
Gas train supplied by the manufacturer
9
TWO STAGE MAIN FLAME VALVE (CLOSED 1
STAGE)
10
AIR DAMPER CONTROL SERVOMOTOR
11
AIR PRESSURE SWITCH
12
COMBUSTION HEAD
13
AIR REGULATION DAMPER
14
IGNITION FLAME VALVE (PILOT) WITH SUPPLY REGULATOR
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STAGE – 2
st
nd

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Comist 250Comist 300

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