BENSON OLYMPIC WH - Page 44

Caution
After approximately 100 hours of runnjng, the tension on the fan belts must
be checked to ensure that it is correct, and that the belts have not stretched. It is
strongly advised that this is undertaken by the commissioning engineer, and not
the operator .
10.2 Servicing
Warning
Servicing must be carried out on a regular basis, the maximum interval
between services being one year. It is a requirement that only suitably qualified
and competent persons are allowed to undertake the servicing.
Benson
Environmental Ltd advise that the planned service schedule as
detailed in section 5.1 of the Installation, Commissioning and Servicing Manual
is adopted by the user. Further details are available from either Benson
Environmental Ltd or from the commissioning engineer.
10.3 Start up proceedure
(a) Ensure that the gas cocks are open , and that the mains electrical supply is
turned on
(b) Set time clock to an 'on' period
(c) Set room thermostat to demand hea t
(d) Set
heat /ve ntilation switch to 'heat'
(e) Set manual/automatic switch to 'automatic '
(f) Set on/ off switch to 'on'
(g) Check for the following burner sequence
I
# interval operand
1
2
3
4
<5s
<40s
>
40 5
<60s
,
Combustion air damp er actuat e d, burner fan motor
initiates purge cycle .. .
Pilot valve
open s, ignition tran sformer provides spark
for pilot ignition ...
Pilot ignition . . . and ...
Burner ignition ...
Burner ignitio/1 star! cycle comple te.
--
Note
The time intervals \·vithin the ignition sequence may vary slightly between
mod els.
(h)
The burner will continue to fire until heat is no longer demanded.