Glow-worm 23c - Manual (Page 19)

19 2000225000B
11 Electrical Connection
Diagram 11.1
(E) Wire link
VOLTAGE
FREE
HEATING
CONTROLS
CONNECTION
PLUG
Warning. This boiler must be earthed
All system components must be of an approved type.
Electrical components have been tested to meet the equivalent
requirements of the BEAB.
Connection of the whole electrical system and any heating
system controls to the electrical supply must be through a
common isolator.
Isolation should preferably be by a double pole switched fused
spur box having a minimum contact separation of 3 mm on each
pole. The fused spur box should be readily accessible and
preferably adjacent to the boiler. It should be identified as to its
use.
A fused three pin plug and shuttered socket outlet may be used
instead of a fused spur box provided that:
a) They are not used in a room containing a fixed bath or
shower.
b) Both the plug and socket comply with the current issue of
BS1363.
The mains electrical supply must be maintained at all times in
order to provide domestic hot water.
Do not interrupt the mains supply with a time switch or
programmer.
WARNING: UNDER NO CICUMSTANCES MUST ANY MAINS
VOLTAGE BE APPLIED TO ANY OF THE TERMINALS ON
THE VOLTAGE FREE HEATING CONTROLS CONNECTION
PLUG.
Warning: This appliance must be wired in accordance with
these instructions. Any fault arising from incorrect wiring cannot
be put right under the terms of the Glow-worm guarantee.
Important: If a replacement supply cable is required it must be
purchased. Part No. S1008600.
11.1 External controls - Voltage Free
This boiler will operate on heating as supplied, provided that the
wire link (E) fitted between the two terminals of the heating
controls conection plug is left in place, see diagram 11.1.
External controls e.g. room thermostat, frost thermostat etc.
should be fitted in accordance with the rules in force.
WARNING: UNDER NO CICUMSTANCES MUST ANY MAINS
VOLTAGE BE APPLIED TO ANY OF THE TERMINALS ON
THE VOLTAGE FREE HEATING CONTROLS CONNECTION
PLUG. If mains voltage controls are required, see section
11.2.
Refer to the wiring diagram Section 17.
9764
11.2 External controls - Mains Voltage
Remove the MAINS VOLTAGE HEATING CONTROLS
CONNECTION PLUG from the fittings pack and install on the
230V interface control board as shown on the instruction sheet,
also provided in the fittings pack and diagram 11.2
Gain access to the 230V interface by unclipping the control
panel and hinge forward.
The wire link (E) must be removed from the voltage free heating
controls connection plug.
External controls e.g. room thermostat, frost thermostat etc.
should be fitted in accordance with the rules in force.
Refer to the wiring diagram Section 17.
11.3 Testing - Electrical
Checks to ensure electrical safety must be carried out by a
competent person.
After installation of the system, preliminary electrical system
checks as below should be carried out.
1. Test insulation resistance to earth.
2. Test earth continuity and short circuit of all cables.
3. Test the polarity of the mains.
The installer is requested to advise and give guidance to the
user of the controls scheme used with the boiler.
Note: For further information, see the building regulations 1991
- Conservation of Fuel and Power - 1995 edition - appendix G,
Table 4b.
➜
➜
MAINS
VOLTAGE
EXTERNAL
CONTROLS
CONNECTION
PLUG
CONTROL PANEL
10019
9762
230V
CONTROLS
BOARD
Diagram 11.2