4
2 - USER INSTRUCTIONS
The boiler is fully automatic once switched on,
providing central heating (and also heating your
domestic hot water if you have a hot water
cylinder fitted).
A 'mains on' neon, see Fig. A, lights when the
boiler is switched on, but does not necessarily
indicate the burner is firing.
If your system includes a programmer, the boiler
will provide hot water and central heating during
the periods set on the programmer.
To gain acces to the controls, pull the front
panel forward at the top to disengage the
fixing clips then lift it up and off the boiler.
To replace locate the bottom of the panel
over the fixing tags then push it towards the
boiler to engage the fixing clips.
Fig. A Boiler controls
1 Ensure that - There is sufficient fuel, of the correct
type, in the supply tank and all fuel supply valves
are open. The water supply is on. The electricity
supply to the boiler is off. The boiler On/Off switch
is set to OFF. The room thermostat (if fitted) is at
the desired setting. The boiler thermostat is set to
the required setting (see Section 2.7).
2 Switch on the electricity supply to the boiler.
3 Set the On/Off switch to ON and, if fitted, the
programmer (CH or HW) to ON.
The boiler will now light automatically.
4 If you have a programmer fitted in your system,
refer to the instructions supplied with the
programmer and set the programmer. Set the HW
and CH functions to TIMED. The boiler will now
operate during the 'on' periods set on the
programmer.
Boiler
thermostat
Overheat
thermostat
reset button
(under cover)
On/Off
switch
OVERHEAT
RESET
HEATING
TEMPERATURE
OVERHEAT
RESET
BOILER
OFF
ON
HEATING
TEMPERATURE
ON
BOILER
OFF
Lock-out
button
Front panel removed
(pull forward at top, then
lift off)
Front panel
fixing clips
Front panel bottom locating tags
GRANT
Mains On
neon
iQE Horizon Internal Oil Boiler
2.1
About your boiler
2.3
Lighting your boiler (see Fig. A)
2.2
Boiler controls (see Fig. A)
