User manual

Installation, Operating & Maintenance Manual

For Modulating Operation w ith External Controller:

Connect any external controller (0-1 Vdc, 0-10 Vdc

Parameter A0 must be set to 1.

Parameter A2 must be set per the OUT signal from the

regulator:

• voltage: 0 to 1 Vdc; 0 to 10 Vdc; 2 to 10 Vdc;

• current: 0 to 20 mA; 4 to 20 mA.

NOTE: Safeties are high-limit humidistat, air flow switch,

and/or external enable. DO NOT apply any v oltage to

7I & 8I.

For Stand-Alone Modulating Operation:

Connect a high limit sensor and control sensor per the

diagram at right. DO NOT apply any v oltage to 7I

& 8I.

Parameter A0 must be set to 2 if no high limit

sensor, 3 if a high limit sensor is used.

Parameter A2 must be set per the OUT signal from

the sensor:

• voltage: 0 to 1 Vdc; 0 to 10 Vdc; 2 to 10

Vdc;

• current: 0 to 20 mA; 4 to 20 mA.

Terminal 4I (+(G)) = 12 Vdc

Terminals 2I & 6I (M) = common

For Steam Baths (Turkish Baths):

In this case a temperature sensor is used to control

the humidifier. Connect sensors per the diagrams below.

Parameter A0 must be set to 4. Parameter A2 must be set to 0.

Alarm Output:

The H terminals allows connection to an on-board SPDT alarm relay that

provides No and NC contacts for remote indication of alarms.

Dehumidify Output:

Dehumidify contacts are also provided which can be used to control a dehumidifier

from the humidifier control system (stand-alone modulating mode only). The

contact is rated for 250 Vac, 8 Amp resistive and 2 Amp inductive loads.