3
istor -
User's
Legend
A.
Boiler ON/OFF switch.
C.
Display.
D.
Reset button.
E.
LED.
F.
CH thermostat knob.
CAUTION.
To avoid the possibility of injury during the installation, servicing or cleaning of
this appliance care should be taken when handling edges of sheet steel components.
1
BOILER CONTROLS
The minimum front clearance allowed when built into a
cupboard is 5mm.
To light the boiler.
Refer to Frame 1
Refer to the programmer section of these instructions to set the
required programs.
1.
CHECK THAT THE ELECTRICITY SUPPLY TO THE BOILER
IS OFF.
2.
Set the mains ON/OFF switch (A) to OFF and CH thermostat
knob (F) to maximum.
3.
Ensure that all DHW taps are turned off.
4.
Switch ON the electricity supply to the boiler and check that
all external controls, e.g. programmer, room thermostat etc.,
are ON.
5.
Set the mains ON/OFF switch to ON.
The boiler will commence the ignition sequence, first supplying
heat to preheat the domestic hot water and then to the central
heating, if required.
Note.
In normal operation the control unit display (G) will show
codes:
Standby - no demand for heat.
CH being supplied.
DHW being supplied to reheat the cylinder.
During ignition, the LED (E) will flash.
During normal running the LED (E) will remain illuminated.
Note.
If the boiler fails to light after 3 attempts the fault code
will be displayed.
Press the reset button (D) for 2 seconds then release. The
boiler will repeat the ignition sequence. If the boiler still fails
to light consult a CORGI registered installer.
Operation
Winter conditions - i.e. CH and DHW required.
The boiler will fire and supply heat to the radiators but will give
priority to DHW on demand.
The DHW will operate as described under 'Summer
conditions' during periods when there is no call for CH.
Summer conditions - i.e. DHW only required.
Set the CH external controls to OFF, or turn the CH thermostat
knob (F) to minimum.
The boiler will fire periodically to maintain the DHW cylinder in
a preheated condition and whenever there is a demand for
DHW.
Note
.
The pump will operate briefly as a self-check once
every 24 hours, regardless of system demand.
Summary of Contents for istor HE260
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