Honeywell CT3550 Manual

A SERVICE OF

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11 69-1284—2

STEP 7. CUSTOMIZE YOUR THERMOSTAT

Your Hone

y

well CT3550 thermostat comes preset to the most commonl

y

used settin

g

s. The settin

g

s are:

— Gas or oil forced air furnace.

— Smart Response technolo

gy

on.

— Temperature °F.

— 12-hour clock format.

You can chan

g

e an

y

or all of these settin

g

s.

IMPORTANT

Always press the keys with your fingertip or a similar blunt tool. Sharp instruments like pens and pencil

points can damage the keyboard.

❑ Press and hold down , , and , simultaneousl

y

until the screen shows.

You now can chan

g

e an

y

of these settin

g

s.

Fan Operation (Feature Number 2)

Fan operation options are:

— 0 = Gas or oil furnace. Furnace controls fan operation durin

g

heatin

g

(preset).

— 1 = Electric furnace or sin

g

le sta

g

e heat pump. Thermostat controls fan operation durin

g

heatin

g

.

To chan

g

e fan operation:

❑ Press once.

❑ Press Time to move to next feature or to return to main displa

y

.

System Type (Feature Number 4)

S

y

stem t

y

pe options are:

— 1 = Gravit

y

or steam s

y

stem.

— 3 = Hot water, hi

g

h efficienc

y

furnace (90% or better), or sin

g

le sta

g

e heat pump.

— 6 = Gas or oil forced air furnace (preset).

— 9 = Electric furnace.

M13347

FEATURE

NUMBER

OPTION

Run

Program

M13348