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CABINET HEATER
9.3
Flame Supervision Systems
The flame supervision system used for gas fired and oil fired heaters is different but may be tested in a similar way.
Gas fired heaters use a rectification flame probe to monitor the flame.
Oil fired heaters use a photo sensitive cell to monitor the flame.
To connect a suitable meter into the circuit to monitor the flame signal current, disconnect one of the wires to the
monitor (there is only one for gas fired).
Connect a suitable DC ammeter between the terminal just disconnected and the wire taken from it. Should the meter
read backwards, then reverse its connections.
Readings should be approximately as follows:- For further details see Burner Manufacturer's instructions
Oil Fired
Gas Fired
Maximum
flame current
with
no flame
Minimum flame
current with
flame
Maximum flame
current with
no flame
Minimum flame
current with
flame
12µ Amp
25µ Amp
0.5µ Amp
1.0µ Amp
Connect a DC ammeter in series
with the flame monitor
Turn on all controls and ensure
supply to burner
OIL FIRED
Is there a stray light entering the
burner or is there a flame
GAS FIRED
Inspect and test the flame probe and
wiring for a short circuit to earth
Is there a current flowing in excess
of the max. value for NO flame
Repair or replace as necessary
Does 'lockout' occur when a flame is
present ?
OIL FIRED
Clean or replace photo electric cell
as necessary
GAS FIRED
Replace flame probe.
Check for it's correct position.
Check wiring to flame probe.
Check burner earth connection.
'Lockout' still occurs ?
Control box faulty.
Replace with correct type.
BURNER OPERATING
YES
YES
YES
NO
NO
NO
Содержание Combat HF 30 v4
Страница 2: ......
Страница 47: ...Page 45 CABINET HEATER Section 6 Wiring Diagrams Fig 6 1 As Wired Diagram for Models 015 to 030 Floor Standing ...
Страница 48: ...Page 46 CABINET HEATER Fig 6 2 As Wired Diagram for Models 015 to 030 Horizontal Mounting ...
Страница 49: ...Page 47 CABINET HEATER Fig 6 3 As Wired Diagram for Models 040 and 050 Floor Standing ...
Страница 50: ...Page 48 CABINET HEATER Fig 6 4 As Wired Diagram for Models 040 050 Horizontal Mounting ...
Страница 51: ...Page 49 CABINET HEATER Fig 6 5 As Wired Diagram for Models 060 to 0100 Floor Standing ...
Страница 52: ...Page 50 CABINET HEATER Fig 6 6 As Wired Diagram for Models 060 to 0100 Horizontal Mounting ...
Страница 55: ...Page 55 CABINET HEATER Fig 6 12 Wiring Diagram for High Flow Models HF40 v3 HF50 v2 HF50 v3 and HF50 v4 ...