3
Installation
General Notes
The installation of all TEC units should be carried out by a qualified electrical
engineer
familiar
with
heating systems and control wiring.
All control circuits of TEC units are ‘volt free’ and may be used to switch
240V AC or low voltage control systems.
Extreme care must be taken to ensure that all wiring is correct before applying
power, as irrepairable damage to the PCB could result due to incorrect
connections.
Mains Wiring
Unscrew the four screws of the TEC 100/200 and remove the lid to gain access
to the PCB and wiring connections.
A 240V AC 1Ph 50Hz supply may be taken from the existing time clock
switched or permanent supply, or direct from the boiler mains input connections
(where available), which ever is the most suitable. The 240V connection to the
TEC 100/200 is shown in Fig.1 below.
240 V Supply as described
TEC 100/200 PCB
E
L
N
Fig. 1
