Hunter 40120 User Manual

1
Electronic/Mechanical
Thermostat
Model 40120
installation and
operation manual
44018-01 04-01-2008

Hunter 40120 Specifications

General

Brand	Hunter
Model	40120
Category	Thermostat
Language	English

Summary

Important Information

Tools Required for Installation

Uninstalling the Old Thermostat

Labeling Wires for Reconnection

Instructions for labeling wires from the old thermostat to ensure correct reconnection with the new unit.

Installing the New Thermostat

Installing the Wall Plate

Steps to mount the new wall plate, including leveling and drilling holes for secure installation.

Connecting the Wires

Guide to connecting the labeled wires to the correct terminals on the new thermostat's back plate.

Attaching the Thermostat Unit

Instructions on setting the HE/HG switch, inserting batteries, and snapping the thermostat onto the wall plate.

Thermostat Operation Guide

Indicators and Adjustments

Span Adjustment for Cycling

How to adjust the thermostat's cycle time for optimal system efficiency and comfort.

Troubleshooting Common Issues

System Wiring Diagrams