Operation Manual

15
5.1 BOILER PACKAGING
The boilers are supplied in dierent packagings:
- Boiler
- Flue system (separate packaging)
5.2 FITTING THE BOILER.
- Decide where the boiler is to be xed on the wall
taking into account the installation requirements
detailed in section 4.2 and the clearances and dimen-
sions described in the the technical data.
The centres for the hanging strap xing are 85mm
below the top of the boiler casing, see g below.
The ue pipe centre is 213mm above the hanging
strap centres. NOTE: a fall of about 2º - 3º should be
allowed on the ue pipe to stop water ingress into the
boiler.
A screw xing should be made on the bottom rail of
the boiler to secure it during transport.
5.3 WIRING INSTRUCTIONS
Warning: observe the usual precautions to ensure
that the electricity supply is isolated before com-
mencing any installation or service work.
- The appliance is tted with a 3 amp. fused 3 pin
plug for use with 230 V~50Hz. It should be tted to a
shuttered socket outlet complying with BS 1363
WARNING: THIS APPLIANCE MUST BE
EARTHED.
ROOM THERMOSTAT:
This appliance may be used in conjunction with an
external room thermostat.
The volt
age between the contacts of the room ther-
mostat is 24V (normally closed). Any 24V controls
may be used, but gold contacts are recommended.
DO NOT under any circumstances use a mains sup-
ply to the stat as you will blow the P.C.B. in the boil-
er. Only voltage free switching stats should be used.
Connection of a room thermostat (optional) .Proceed
as follows:
Unscrew the screw (A) as it shows gure 1, open
the bottom cover, where the connector of the room
thermostat is placed.
Press out the plastic disc (B) using a screwdriver to
form a hole so you can pass through the wires of the
room stat.
Replace cover.
The room thermostat must be installed on a wall
which is free from any objects and free from direct
contact with either sunlight or draughts.
External Probe connection Type 10K-25ºC, B3435
1% (25-85) (optional).
Press out the plastic disc (B) using a screwdriver to
form a hole so you can pass through the wires of the
external probe.
Conect the external probe wires to the free holes
with red wires in the other side..
Congurate the external
probe curve in instalation
menu.
5.- INSTALLATION INSTRUCTIONS
Figure 1
A
B
1
2
3
Black
Wires
Thermostat
External Probe
TMV2
3