Owner’s Manual
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Mode d’emploi
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Manual de Uso
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CT30 Series
Low-Voltage Thermostat
M23786
MERCURY NOTICE
If your old thermostat contains
mercury, contact your local waste
management authority for proper
disposal instructions.
TURN OFF POWER at heating/cooling system (or fuse/circuit-breaker panel).
Remove cover and thermostat, but leave wallplate with wires attached.
Is there a sealed tube containing mercury?
If so, see mercury notice below.
Leave wallplate in place.
Old thermostat
Cover
Getting started
Remove your old thermostat
Check package contents:
• Thermostat
• Coverplate
• Wall anchors & screws (2 each)
• Caution card
• Wire labels
Before you begin, make sure you have:
• No. 2 Phillips & small pocket screwdrivers
• Hammer
• Level (optional)
• Pencil
• Drill and bit (3/16” for drywall, 7/32” for
plaster)
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