INSTALLATION AND USER
INFORMATION GUIDE
©
2023 Lennox Industries Inc.
Dallas, Texas, USA
M0STAT120N-1 Indoor
Wired Programmable
Controller
CONTROLS
508332-01 6/2023
THIS MANUAL MUST BE LEFT WITH
THE OWNER FOR FUTURE REFERENCE
WARNING
Improper installation, adjustment, alteration,
ser vice or maintenance can cause property
damage, personal injury, or loss of life.
Installation and service must be performed
by a li censed professional HVAC installer
(or equivalent) or a service agency.
CAUTION
As with any mechanical equipment, contact
with sharp sheet metal edges can result in
personal injury. Use caution while handling
this equipment. Wear gloves and protective
clothing.
IMPORTANT
Frequent changes to operating mode may
cause system malfunctions. Allow at least
one minute between mode changes to allow
the system to stabilize.
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