38
INSTALLER
ENGLISH
Circuit
pump
Mixer
valve
Mixed circuit
safety thermostat
CH circuit pump and/or other optional components
- The boiler is pre-cabled for the connection of a CH
circuit pump, mixer valve and mixed CH circuit safety
thermostat.
b
The following instructions are mandatory.
1 - Use a multi-pole magnetic thermal trip switch
and disconnector conforming to IEC-EN stand-
ards (with a contact gap of at least 3 mm).
2 - Respect the L (Phase) - N (Neutral) polarity.
Keep the ground wire about 2 cm longer than
the power wires.
3 - Use cables with a cross section of 1.5 mm
2
or
more, complete with end terminals.
4 - Always refer to the electrical wiring diagrams
in this manual when performing any electrical
work.
5 - Make sure the appliance is connected to an
effective ground.
a
It is strictly forbidden to use fuel and/or water
pipes to ground the appliance.
a
Do not route the power cable or room thermostat
cables near hot surfaces (like heating circuit flow
pipes). Use a suitable class of cable if there is
any possibility of contact with parts at temperatu-
res above 50°C.
The manufacturer declines all responsibility for
damage caused by failing to ground the appliance
adequately or by failure to respect the wiring dia-
grams provided in this manual .
Automatic shut-off device (DAI)
(not supplied; only where required; see also the "Fuel con-
nections" section)
- Connect up the automatic shut-off device (DAI) as
shown in the wiring diagram alongside. This ensure that
fuel only passes when the burner is functioning.
b
The automatic shut-off device (DAI) and the relay
(RE) must be suitable for a 230 VAC power supply.
See the “Fuel connections” section for details of the fuel
connections.
DAI - Automatic shut-off device (not supplied)
RE - Relay (not supplied)
SPB - 7-pin burner plug
N T2
S3
RE
DAI
SPB
C
C
NC
NC
L1
N T1 T2 S3 B4
