- 15 -
Service Call 0844 736 9138, Technical Help (Chargeable) Call 0844 736 0053
10 Appliance safety devices
10.1 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 with a blunt object, see chapter
"Quick reference guide".
If the boiler fails to resume normal
operation and all external controls are
calling for heat, then call your Installation/
Servicing engineer or Heatline service.
10.2 Protecting against frost
Appliance Protecion
In case of the risk of frost:
Make sure that the electrical and gas
supply to the appliance is turned on.
The frost protection device will operate
the pump when the temperature of
the boiler water falls below 8
O
C. A
timer is used so that the temperature
can be checked periodically. After 10
minutes the pump will be stopped if the
temperature is higher than 10
O
C or has
already reached 35
O
C. The burner will
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.
If the boiler is in "Domestic Hot Water"
mode only, the frost-protection system is
still active.
System Protection
The boiler alone cannot ensure that the
installation is protected against frost.
NOTE:
Any exposed pipe work should be
lagged and an external frost thermostat
tted, noting that condensate drainage
pipes are particularly vulnerable to frost.
In case of prolonged absence, where the
power to the dwelling is switched off and
low temperatures are expected then it is
recommended that the entire system is
drained. Consult your installer or service
engineer if required.
CAUTION: Your domestic
water circuit (hot and cold) is
not protected by the boiler.
10.3 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
or in an unheated area such as a loft,
basement or garage.
X
hot cloths to the pipe in the vicinity
of the blockage.
Do not use boiling
water.
Once the blockage is removed
the appliance will again operate after
depressing the re-set button with a
blunt object.
'% Z
company or Heatline service if the fault
persists.
