4
Control Wiring
NOTE: If a wiring harness is provided in the rear of the enclosure please
follow cables to TEC 100/200 PCB to determine connections as described in
the following sections.
Many boilers are provided with an accessible mains terminal block. Most
have a pair of connections (usually unused) for use with external controls.
These connections will have a link which needs to be removed so that the
TEC 100/200 control wires can be connected as shown in Fig.2.
TEC 100/200 PCB
N L E
Remove link
To boiler 2 (TEC 200)
To boiler
If the boiler is a simple
permanent pilot type, i.e.
Ideal Concord, Potterton,
Kingfisher etc, the
connections may be made
into the mains supply of
the boiler if more
convenient.
Fig. 2
Note:
A 5-core heat resistant flex is ideal for connecting the TEC 100/200 to the
boiler. The recommended connection method is via a flexible nylon
conduit to house the cable.
Where a terminal block arrangement as shown in Fig.2 is not available, the
control wiring should be connected directly into the boiler thermostat wiring
as shown in Fig.3.
