7
to
re-pressurise the System
by adding Water
You may have to wait for the boiler
to cool down before the button
will reset. If this condition repeats,
contact your Service engineer.
Check the system pressure and
re-pressurise as necessary before
attempting to reset the overheat
thermostat. Refer to Sealed central
heating system in these instructions
for details on re-pressurising the
system.
Ventilation
- Always ensure that the
boiler has adequate ventilation. Any
ventilation openings in the boiler casing
must not be obstructed. Periodically
check that they are clear. Do not
attempt to ‘box in’ the boiler or build a
compartment around it. Do not place
any combustible material on or around
the boiler.
Flue terminal
- The flue terminal
must not be obstructed or damaged.
In severe conditions check that the
terminal does not become blocked with
snow. Do not place any combustible
material on or around the flue terminal.
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tE
The time and on/off settings on
a 7-day or 24-hour timer or a
2-channel programmer may need to
be reset after a power failure.
The Grant Programmable
Room Thermostat and Wireless
Programmable Room Thermostat
are battery powered and will be
unaffected by a power failure.
Electricity Supply
The boiler requires a 230/240 V - 50
Hz supply. It must be protected by a 5
Amp fuse.
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Add water to the system only when it
is cold and the boiler is switched off.
Do not overfill.
The procedure is as follows:
1.
Ensure the flexible filling loop is
connected and that the shut off
valve connecting it to the boiler is
open and the double check valve at
the front is closed. A valve is open
when the operating lever is in line
with the valve, and closed when it is
at right angles to it.
2.
Gradually open the double check
valve on the front of the filling loop
until the water is heard to flow.
3.
Vent each radiator in turn, starting
with the lowest one in the system,
to remove air.
4.
Continue to fill the system until
the pressure gauge indicates the
required pressure between 0.5 and
1.0 bar. Close the fill point valve.
5.
Close the valves either side of the
filling loop and disconnect the loop.
General n
otes and Care of
your System
Boiler controls
- Refer to the section
Boiler controls
.
The system must be filled to between
0.5 to 1bar. If the heating system loses
pressure on a regular basis then contact
your Installer to investigate the cause.
Burner Lock-out reset button
- If there
is a burner malfunction, a built-in safety
circuit switches the burner off and the
‘Lock-out’ reset button on the burner
will light. Usually such malfunctions are
short lived and pressing the reset button
will restore normal operation.
The reset button should not be pressed
more than twice in attempting to start
the burner.
If the burner continually goes to ‘Lock-
out’ a fault exists or the fuel supply is
low. If you have checked that you have
sufficient fuel, you will need to call your
Service engineer.
Overheat thermostat
-Your boiler is
fitted with a safety overheat thermostat
which will automatically switch off
the boiler in the case of a control
malfunction causing overheating. The
red ‘OVERHEAT’ indicator on the
control panel (see Figure 2) will flash
indicating the overheat thermostat has
operated.
If your boiler goes off and you try to
light it but nothing happens and the
‘Lock-out’ reset button on the burner
is not lit, the overheat thermostat has
probably operated. The boiler will not
light until the thermostat is reset. To
reset, unscrew the small plastic cap
(see Figure 2), and press the button and
the ‘OVERHEAT’ indicator should go off.
Replace the plastic cap.
Frost Protection
- Your boiler is fitted
with a pre-set internal frost protection
thermostat. Should either the air
temperature around the boiler, or the
water temperature within the boiler, fall
to below 5°C then this thermostat will
be activated. The boiler will then operate
briefly to prevent it from freezing. Your
boiler may also be fitted with a remote
frost protection thermostat; check with
your installer. If you are intending to be
away for a long period, the boiler and
system should be drained. Contact your
Service engineer for draining and filling
the system.
Cleaning and servicing
- Lightly wipe
over the case with a damp cloth and
a little detergent. Do not use abrasive
pads or cleaners. You should have your
boiler serviced at least once a year to
ensure safe and efficient operation.
Contact your Service engineer for
further details.
Failure of electricity supply
- If the
electricity supply fails, the boiler will not
operate. It should relight automatically
when the supply is restored.
!
Warnin
G
The Vortex boiler contains electrical
switching equipment and must be
earthed.
!
Warnin
G
