Fig. 1

MERCURY

SWITCH

M3701

Recycling thermostat

If you are removing an old thermostat that contains mercury in a sealed tube (Fig. 1), do not place the old thermostat in the trash. Contact your local waste management authority for instructions regarding recycling and the proper disposal of the old thermostat.

Installation

Verify that you have the right thermostat

Make sure that the CT3300 is the right thermostat for your heating/cooling system. Read the compatibility chart below to determine which system you have. If your system is not compatible with the CT3300, the table recommends an alternate Honeywell model. If you are unsure what type of thermostat is right for your system, visit us on the Web at www.honeywell.com/yourhome or call Honeywell Customer Relations at 1-800-468-1502.

 

Compatible

Alternate

Heating/cooling system

with CT3300?

model

 

 

 

Conventional

Yes

 

Single stage systems that include warm air furnaces and hot water.

 

 

 

 

 

Electric Baseboard

No

CT1950 for

Electric powered heating strips located just above the floor, usually 120 to 240 volts.

 

240 volts

 

 

 

Steam

No

CT3600

A steam boiler with radiator heat.

 

 

 

 

 

Heat Pump

No

CT3600

Heating and cooling are produced from the same outdoor unit (compressor) with no

 

 

auxiliary or backup heat.

 

 

 

 

 

Multistage Heat Pump

No

CT3611

Heating and cooling are produced from the same outdoor unit (compressor) with

 

 

auxiliary or backup heat.

 

 

 

 

 

Multistage Conventional

No

See your

A heating or cooling system with more than one stage.

 

contractor

 

 

 

2 INSTALLATION

69-0654-5

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Honeywell CT3300 warranty Installation, Verify that you have the right thermostat, Recycling thermostat