Roberts Gorden BH60DL/EF Manuel D’Utilisation
B
LACKHEAT
®
I
NSTALLATION
O
PERATION
AND
S
ERVICE
M
ANUAL
58 of 74
SECTION 14: OPERATION
Figure 35: Sequence of Operation Chart
NOTE: If the heater operates for more than 24 hours continuously, the ignition module will automatically recycle the
burner to ensure that all safety functions are still in working condition.
burner to ensure that all safety functions are still in working condition.
14.1 Heater Lockout Indication (Optional)
In case of flame loss during operation of the heater, the
burner control unit goes to lockout mode after three
ignition trials. At this stage a signal or closed relay will
enable the ROBERTS GORDON
burner control unit goes to lockout mode after three
ignition trials. At this stage a signal or closed relay will
enable the ROBERTS GORDON
®
controller, BMS
system, etc. to indicate precisely which heater has failed.
This can be done by two options.
This can be done by two options.
Cut/Pinch Hazard
Wear protective gear
during installation,
operation and service.
during installation,
operation and service.
Edges are sharp.
WARNING
Failure to follow these instructions can result in death, electric shock, injury or property damage.
Burn Hazard
Allow heater to cool
before service.
before service.
Tubing may still be hot
after operation.
after operation.
Explosion Hazard
Turn off gas supply to
heater before service.
heater before service.
DANGER
Electrical Shock Hazard
Disconnect electric
before service.
before service.
More than one
disconnect switch may
be required to
disconnect electric from
heater.
Heater must be
connected to a properly
grounded electrical
source.
disconnect switch may
be required to
disconnect electric from
heater.
Heater must be
connected to a properly
grounded electrical
source.
P
P
Fan Neon
Burner Neon
Neon
Ignition
Gas
Valve
Flame
Sensing
Sensing
Pressure
Switch
Switch
Fan
Thermostat
KEY TO
SYMBOLS
T0
T1
T2
T3
T4
T5
T6
T7
10 sec
Tp
40 sec max.
Interruption of main
Tp
10 sec
Ts
10 sec
flame sensing
11 sec typical
T8
Lockout Alarm
Signal (optional)
Signal (optional)
Burner Lockout
signal received after
3 ignition trial
failures