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ECS-3M
2.4.1.2 - 230 VAC
Make certain that the line voltage selector switch is
set to 230 VAC. Connect the power cable to terminals 7
and 8 on the main (bottom) board and connect the ground
wire to terminal 9 on the main board.
2.4.2 - Fan 1 (terminals 5 and 6)
Stage 1 of the ECS-3M controls the operation of the
primary fan. Connect the two leads from fan 1 to terminals
5 and 6 on the main (bottom) board.
2.4.3 - Fan 2 (terminals 3 and 4)
Stage 2 of the ECS-3M controls the operation of the
secondary fan. Connect the two leads from fan 2 to
terminals 3 and 4 on the main (bottom) board.
2.4.4 - Fan 3/Heater (terminals 1 and 2)
Stage 3 of the ECS-3M provides a dry contact closure
which controls the operation of a third fixed speed fan or a
heater. This contact closure is voltage rated to 230 VAC.
The current rating of the dry contact is 10 Amps (resistive)
for a heater and 6 Amps (inductive) for a fan. Set the
software settings DIP switch at the rear of the control
panel faceplate to ON for a fan or OFF for a heater.
Connect the heater or fan 3 to terminals 1 and 2 on the
main (bottom) board.
2.5 TEMPERATURE / HUMIDITY PROBES
Temperature and humidity probes use a “Class 2” low
voltage circuit. These cables can be extended to a
distance of 150 meters (500 feet). Single probe
temperature and humidity connections are illustrated in
figure 4, while temperature probe averaging connections
are illustrated in figure 5.
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