BENSON OUHA 100, Инструкция по установке и эксплуатации

Страница: 31 / 31

BENSON OIL UNIT HEATER
31
(e) Set manual/automatic switch to
'automatic'
(f) Set on/standby switch to 'on'
(g) Check for the following burner sequence
interval o p e r a n d
1 <5s Combustion air damper actuated
fan motor initiates purge cycle...
2 <15s Solenoid valve opens ignition
transformer provides spark for burner ignition
and flame detection...
3 <20s Burner ignition start cycle
complete.
Note
The time intervals within the ignition
sequence may vary slightly between models.
(h) The burner will continue to fire until heat
is no longer demanded.
10.4 Stop procedure
(a) Set on/standby switch to 'standby'
position.
(b) The fan motor will continue to run until
heat dissipation allows the fan and limit stat
to shut down the fan.
Caution
Do not use the main electrical isolator to turn
off the heater, to do so can cause damage to
the heat exchanger and combustion
chamber, and thereby invalidate the
warranty.
10.5 Shut down procedure
(a) Follow steps 10.5 (a) and (b), when fan
stops turn main electrical isolator off, and
shut oil supply valves
10.6 Ventilation only
(a) Set heat/ventilate switch to 'ventilate'
.
(b) Set on/standby switch to 'on'
10.7 Lockout situations
If either the burner or the fan and limit stat go
to lockout, the lockout must be cleared
manually before the ignition sequence can
be re-initiated.
Caution
Repeated or frequent lockouts must be
investigated and their cause determined by a
qualified and competent engineer.