Form
483S
Rev
Jan
09
Page 45 of 53
7. COMMISSIONING
It is essential that all new pipework installations are purged and tested for soundness with a suitable leak
detection fluid prior to attempting to ignite any appliance. This work should be carried out in accordance with
National or Local regulations.
N.B. DO NOT TEST FOR SOUNDNESS BY USE OF NAKED FLAMES.
7.1
Ignition
7.1.1
Close and secure the Control Box door. The appliance will not operate unless the door is secured.
7.1.2
Turn on the gas supply to the appliance.
7.1.3
Set the system time clock and thermostat to demand heat.
7.1.4
Switch on the electricity supply to the appliance. The appliance red neon indicator will be illuminated, the
system fan will commence rotating and the air proving switch will sense an adequate air flow condition. The
amber neon indicator will be illuminated.
7.1.5
After a purge period of 10 seconds minimum, the solenoid valves and ignition spark electrode will be
energised
simultaneously.
7.1.6
Upon successful ignition, the flame sensor will detect the flame, and the ignition spark electrode will be de-
energised.
7.1.7
Should the flame fail to permanently establish during the 12 second ignition period the solenoid valves and
ignition spark electrode will be de-energised, the amber neon indicator extinguished, the fan stop rotating, and
the appliance ignition control go to "lockout" condition.
7.1.8
To repeat the ignition sequence it will be necessary to switch off the electricity supply to the appliance for a
period of 10 seconds to reset the ignition control. If a first reset is not successful, wait at least 15 seconds
before repeating the procedure. After reset, an extended waiting time will occur.
7.1.9
If the burner fails to ignite following a second ignition sequence, switch off the electricity supply to the
appliance, turn off the gas supply at the gas isolation valve and investigate the fault.
7.1.10 If gas failure occurs after successful ignition, the appliance ignition control will attempt one re-ignition before
going to "lockout" condition.
7.2
Shut
Down
7.2.1
To shut down the appliance for short periods of time, switch off the electricity supply to the appliance.
7.2.2
To shut down the appliance for a period for time in excess of one week, switch off the electricity supply to the
appliance and turn off the gas supply at the gas isolation valve.
Note: Concise operating instructions are contained on Instruction Label (4260440), which should be
affixed, adjacent to a low level user control.
7.3
Checking
Gas
Pressures
7.3.1
Switch off the electricity supply to the appliance.
7.3.2
Connect a manometer to the test nipple protruding from the rear panel of the Control Box (adjacent to the Air
Inlet Adaptor) see Fig. 29.
7.3.3
Open the Control Box door after releasing the two toggle latches.
7.3.4
To check the gas supply pressure:-
Содержание CBU09
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