Glowworm Lighting ULTRACOM CXI - Manual (Page 7)

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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.