Technical data

Issue No.1 Combined Manual 24.10.07
5
SWITCHING THE BOILER OFF
The boiler can be switched off at anytime using one of the following:
- Turn the boiler control thermostat to the OFF position
- Switch the mains (electrical supply) to OFF
- Set the control system to OFF (e.g. Time Clock)
PLEASE NOTE: For longer periods of shutdown e.g. while away on holiday, switch OFF the mains
(electrical supply) and turn OFF the OIL supply.
If shutdown occurs during cold weather ensure boiler is protected against frost damage.
BURNER LOCKOUT
The burner has an independent control system (Burner Control Box); this includes a flame detector
(Photocell), which senses the presence of a flame. In the event of a flame failure, the burner control
box activates a second re-ignition sequence. Should the photocell not detect a flame presence within
15 seconds the burner goes to LOCKOUT and shuts down.
Continued LOCKOUTS are a result of a fault in the operation of the boiler and can be attributed to
following examples:
- An interruption of the fuel supply.
- Electrical Supply Fault e.g. Extreme low voltage.
- Failure of a burner component.
- A fault within the heating system.
- Burner combustion not being correct.
The Burner Reset button on the Control Box illuminates to indicate that a lockout has occurred.
In the event of the Burner locking out, do not attempt to restart the Burner by pressing the Reset
Button on the Burner Control Box for at least 2 minutes. A Bi-metallic timer within the Control Box
has a minimum cooling time of 45 seconds thus the 2 minute interval will ensure that this Bi-metallic
timer has cooled and is therefore in a position where it may be reset.
RESTARTING AFTER LOCKOUT
When lockout has occurred, inspect for any obvious causes e.g. oil leaks. Also check the fuel line
from the tank to the boiler and that any oil shut off valve has not been inadvertently closed.