TEC 100 - Advanced Wiring Options

5
TEC 100/200 PCB
Boiler Thermostat
Boiler 2 (TEC200):
Connections as per
Boiler 1
N L
E
Live in
p
ut
Live to Burner
Fig. 3
Other Wiring Options
The TEC 100/200 has three control relays. On the TEC 100 the left hand relay
is the Plant Relay which may be used to control a circulating pump and the
right hand relay is the boiler control circuit. The centre relay (Tec 100 only)
make and breaks on RTN/HW settings and may be used to control a HW pump,
solenoid etc, see Fig 4. On the TEC 200 the left hand relay is the Plant Relay,
the middle relay is boiler 2 control circuit and the right hand relay is boiler 1
control circuit.
Pump
TEC 100/200 PCB
N L
E
1 P 2
Make on
RTN/HW
temperature
drop.
Neutral
Live
Fig. 4