Lennox International Inc. 81M28 User Manual

Menu Driven Display

Fully Programmable

24 VAC with Worry-Free
Memory Storage

1 Heat / 1 Cool, 2 Heat / 2 Cool
and Heat Pump Models

Five Year Warranty

User's Manual

504, 684M

110-1052F

DELUXE

PROGRAMMABLE

THERMOSTATS

with Humidity Control

81M26
81M27
81M28

110-1052F 5/12/05 11:59 AM Page 1