CAREL
humiSteam
18
Remote Supervisor / Serial Communications:
This is a standard RS485 serial connection. It is recommended to keep
wiring under 3,200 feet. Request Carel’s communications documentation
for additional information on this option.
Control wiring is made directly to the control
board terminals:
1. terminal block G (dehumidification
contact);
2. terminal block H (alarm contact);
3. terminal block K (on/off, manual drain
switch);
4. terminal block I (control signals);
5. terminal block J (to remote terminal or
supervisory sy stem);
6. dip-switch for selecting TA RATE.
For On/Off Operation:
Connect any simple humidistat, high-limits, air
flow switch, and remote contacts in series from
terminals 7I to 8I. DO NOT apply any v oltage
to 7I & 8I.
Circuits must be completed from 4I to 5I by a
jumper and from 7I to 8I for the unit to operate.
Use jumpers if devices are not connected.
Parameter A0 must be set to 0.
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