8
ELECTRICAL CONNECTION
Warning.
This boiler must be earthed
All system components must be of an approved
type.
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 con-
tact separation of 3 mm on each pole. The fused
spur box should be readily accessible and prefer-
ably 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 cur-
rent 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: ON NO ACCOUNT MUST ANY EXTERNAL
VOLTAGE BE APPLIED TO ANY OF THE TERMINALS ON
THE EXTERNAL CONTROLS CONNECTION PLUG.
Warning
: This appliance must be wired in accord-
ance with these instructions. Any fault arising from
incorrect wiring cannot be put right under the terms
of the
Saunier Duval
guarantee.
External controls
The
THEMA C
boiler is designed to operate at maxi-
mum efficiency at all times and will benefit by be-
ing connected to a programmable electronic
room thermostat such as
Saunier Duval
part
number 40010. Please contact your supplier.
The boiler will work for heating without a room ther-
mostat and/or timeswitch being connected pro-
vided that the wire link fitted between the two ter-
minals of connector
(E)
is left in place, see
diagram
10.
A 230V room thermostat can be used but do not
make any connection to the compensating resis-
tor.
ON NO ACCOUNT
must any electrical voltage be
applied to any of the terminals of the external con-
trols plug.
Should any doubt exist about connecting external
controls, contact the
Saunier Duval Technical
Helpline 01773 828400.
BOILER INSTALLATION
Statutory requirements
The installation of this boiler must be carried out by
a competent person in accordance with the rel-
evant requirements of the current issue of:
The Gas Safety (Installation and Use) Regulations
The Building Regulations
The local water company Byelaws
The Building Standards Regulations (Scotland)
The Health and Safety at Work Act
Sheet metal parts
WARNING. When installing or servicing this boiler,
care should be taken when handling the edges of
sheet metal parts to avoid the possibility of personal
injury.
Installing the boiler
Prior to starting work, the system must be thoroughly
flushed so as to eliminate any foreign bodies and
contaminants such as filings, solder particles, oil,
grease etc.
Note.
Solvent products could cause damage to the
system.
• Engage boiler upper part onto the hanging
bracket,
see diagram 8.
• Allow the boiler to seat down onto support plate,
see diagram 9.
• Fit filter and washers, strictly adhering to the se-
quential order and directions shown on
diagram 5.
• Connect the various couplings between the
boiler and the connection plate.
Ins 020
Ins 021
➞
➞
Diagram. 8
Diagram. 9
