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©2017 Lennox Industries Inc.

Dallas, Texas, USA

THIS MANUAL MUST BE LEFT WITH THE OWNER

FOR FUTURE REFERENCE

Shipping and Packing List

Shipped with Product

1 - Thermostat
2 - Plastic wall anchors
2 - Screws
1 - Operation manual

Optional Accessories (not included)

Remote indoor sensor: 47W37
Wall Plate: X2659

INSTALLATION INSTRUCTION

C0STAT05FF1L CS3000

Commercial Programmable

Thermostat

CONTROLS

507517-02
6/2017
Supersedes 507517-01

C0STAT05FF1L 5/2 Day Programmable
Thermostat

The Lennox ComfortSense

®

 3000 Series Commercial

Programmable Thermostat, Model C0STAT05FF1L
(11Y05) is a 5/2 day programmable and 2-heat / 2-cool
electronic thermostat. This thermostat is suitable for the
following 

Lennox Commercial

 systems:

Heat/cool systems (conventional)

Packaged heat pumps (2-20 tons)

Split heat pump systems (7-10 tons) 

NOTE 

- Not for use with small 3-5 ton split heat pump

systems

.

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