Grant 50/70 - User Instructions; About Your Boiler; Boiler Controls; Lighting Your Boiler

4
Grant Vortex Indoor/Utility, System and Boiler House Oil Boilers
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.
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 (Indoor/Utility model shown)
About your boiler
2.1
Boiler controls (see Fig. A)
2.2
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, 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.
Lighting your boiler (see Fig. A)
2.3
Pressure gauge
(System models only)
Boiler
thermostat
Overheat
thermostat
reset button
(under cover)
On/Off
switch
OVERHEAT
RESET
SYSTEM PRESSURE
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
GR
AN
T
Mains On
neon