Glow-worm 23c - Manual (Page 5)

5 2000225000B
Controls and Lighting
Diagram 1
9084
1 - On/Off switch
2 - Central heating
temperature selector
3 - Domestic hot water
temperature selector
4 - Pressure gauge (bar)
and temperature gauge (ºC)
5 - Fault display
(faults indicated by a
red flashing light)
6 - Clock-timer (Optional)
1. Lighting the boiler :
Make sure that:
• The boiler is connected to the electrical supply.
• The gas service cock is open.
Turn the switch ON ( I )
2. Stop the boiler :
• Turn the switch OFF ( 0 ) the electrical supply is
OFF.
• Turn the gas supply OFF at the gas service cock if
the boiler is to be out of use for a long time.
1
2
3
4
5
6
3. Domestic hot water adjustment :
• Position ( 0 ): Domestic hot water OFF
• Position ( I ) and ECO: Domestic hot water
between approx. 35˚C and 50˚C
• ECO: Maximum recommended for constant use
• Between ECO and maxi: Occasional use for water
above approx. 50˚C
4. Heating temperature adjustment :
• Winter: Set the control knob between 1 and 5
• Summer: Set the control knob to
5. If a fault occurs (indicated by red flashing
light) :
• Reset boiler: Turn the On/Off switch to ( 0 ),
wait for five seconds. Turn the On/Off switch to ( I )
the boiler is reset. If the fault continues call your
Installation/Servicing company or Heatcall.
(Glow-worm’s own service organisation) using the
telephone number on the front cover
of this literature.
6. Installation filling :
• If the boiler loses water: the pressure gauge (a)
and fault display (b) will flash. Fill the system by
the filling device (c) at the bottom of the boiler until
the pressure gauge reads 1.5 bar.
• Warning: Take care not to overfill the boiler. At a
pressure of 2.5 bar or above indicating over
pressure, the fault display (b) will flash. The
pressure must be reduced to 1.5 bar by bleeding a
radiator. If the fault continues call your Installation/
Servicing company or Heatcall. (Glow-worm’s own
service organisation) using the telephone number
on the front cover of this literature.
Diagram 2
➜
(a) (b) (c)