White Rodgers 2274W installation instructions Installation Instructions, Description, Precautions

2271/72/73/74W

Line or Low Voltage

Humidistat / Dehumidistat

INSTALLATION INSTRUCTIONS

Operator: Save these instructions for future use!

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY AND/OR PROPERTY DAMAGE.

DESCRIPTION

These wall-mounted, line or low voltage humidity controls are available as a Humidistat commonly used to control and operate a furnace humidifier or as a Dehumidistat commonly used to cycle an air conditioning system to control humidity in an unoccupied home to prevent mil- dew build-up associated with high humidity levels.

These humidity controls feature a moisture-sensitive nylon sensing element and also provide positive ON-OFF settings for manual operation.

2271W

2274W

PRECAUTIONS

If in doubt about whether your wiring is line, or low voltage, have it inspected by a qualified heating and air condition- ing contractor, electrician, or someone familiar with basic electricity and wiring.

This control is a precision instrument, and should be handled carefully. Rough handling or distorting compo- nents could cause the control to malfunction.

Do not exceed the specification ratings.

All wiring must conform to local and national electrical codes and ordinances.

CONTENTS
Description	1
Precautions	1
Specifications	2
Installation	2
Select Humidity Control Location
Route Wires to Location
Wiring
Attach Humidity Control to Wall
Operation	4
Humidistat Control
Dehumidistat Control

CAUTION

To prevent electrical shock and/or equipment dam- age, disconnect electric power to system, at main fuse or circuit breaker box, until installation is complete.

Do not short out terminals on primary control to test. Short or incorrect wiring will burn out humid- ity control and could cause personal injury and/or property damage.

WARNING

Do not use on circuits exceeding the rated volt- age. Higher voltage will damage control and could cause shock or fire hazard.

White-Rodgers is a division	PART NO. 37-9600D
of Emerson Electric Co.
	Replaces 37-9600C
www.white-rodgers.com
	0528