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7
Boiler Safety Devices
Boiler Shutdown
The boiler software is designed to recognise the potential for
an overheat lockout and will shutdown before this happens.
To restart the boiler, press the reset button, see diagram 2.
If the boiler fails to resume normal operation and all external
controls are calling for heat, then call your Installation/Servicing
company or Glow-worm service.
Frost Protection
With the gas and electric supplies ON and irrespective of any
room thermostat setting, the integral frost protection device
will operate the pump when the temperature of the boiler
water falls below 8
O
C.
The pump will stop after 10 minutes if the temperature is
higher than 10
O
C or has already reached 35
O
C.
The burner will only activate if the boiler temperature does not
reach 10
O
C after 30 minutes or at any time if the temperature
drops to 5
O
C.
The burner will switch off when the temperature reaches
35
O
C.
NOTE: Any other exposed areas of the system should be
protected by a separate frost thermostat.
Condensate Drain Blockage
As a safety feature the boiler will stop working if the condensate
drain becomes blocked. During freezing conditions this may
be due to the forming of ice in the condense drain external to
the house. Release an ice blockage by the use of warm cloths
on the pipe. The boiler should then restart. Contact your
Installation/Servicing company or Glow-worm service if the
fault persists.
Safety Discharge Valve
The safety discharge valve and discharge pipe is fitted to the
boiler. If there is any discharge from the pipe, switch off the
boiler electrical supply, then call your Installation/Servicing
company or Glow-worm service.