Specifications

Installation & Maintenance Manual__________

5.3 Control Wiring

The humidifier has proportional modulation with the ability to vary its capacity from 25 to 100% according to the

demands for humidity. The humidifier can be connected using RS485 to a remote panel Carel Humivisor (MT in the

following pictures) or to a remote supervisor or BAS system.

5.3.1 Control Wiring for C Type On/Off

The C Type control program is for On/Off operation in response

to an external closed contact as from a humidistat or DDC relay.

If the Hi-Limit and Airflow switches are not used, then place a

jumper across terminals 7Z and 8Z.

DO NOT apply voltage to any input on a C Type controller.

5.3.2 Control Wiring for P Type Proportional Modulating

The P Type control program is designed to accept various modulating input signals: 0-10 Vdc, 2-10 Vdc, 0-20

mAdc, and 4-20 mAdc from an external controller (R).

If the Hi-Limit and Airflow switches are not used, then place a jumper across terminals 7Z and 8Z.

NOTE: The modulating signal must come from a controller or DDC system, not a sensor. The P Type control

program follows the input signal directly, being off at low signal and full output at high signal.

10Z

11Z

12Z

13Z

14Z

External

Regulation

HI-LIMIT

HUMIDISTAT

AIRFLOW

SWITCH

Signal

Common

HI-LIMIT

HUMIDISTAT

AIRFLOW

SWITCH

10Z

11Z

12Z

13Z

14Z