Unigas PN91 Manual Of Installation - Use - Maintenance page 9

Progressive, fully-modulating heavy oil - light oil burners
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POS OIL TRAIN
1
Filter
2
Pump and pressure governor
3
Electrical motor
33 Pressure gauge with manual valve
4
Electrical preheater tank
4.1 Electrical preheater tank
5
Thermostat - TR
6
Low thermostat - TCN
7
High thermostat - TRS
Pb4
Temperature probe
Pb1
Temperature probe
Pb3
Temperature probe
8
Minimum pressure switch - POMIN
9
3-way solenoid valve
10
Flexible hose
11
Flexible hose
12
Flexible hose
Pb2
Temperature probe
13
Oil distributor
14
Low thermostat - TCI
15
Pressure governor
16
Flexible hose
17
Burner
18
Maximum pressure switch - POMAX
80
Solenoid valve
81
Solenoid valve
COMBUSTION AIR TRAIN
18 Air damper with actuator
19 Pressure switch - PA
20 Draught fan with electromotor

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