Carel SD User Manual download pdf (Page 18)

CAREL

humiSteam

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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Carel SD User Manual Page 18