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Honeywell CT87N The Round Non Programmable Thermostat Owner’s Manual

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Mount thermostat base  
1. Drill holes at pencil-marked  
locations (3/16” for drywall,  
7/32” for plaster).  
Thermostat  
base  
2. Use hammer to tap anchors  
into holes until flush with  
wall.  
3. [Optional] Pull wires through  
cover plate (if needed to cover  
marks left by the old thermostat).  
4. Pull wires through thermostat  
base, position over anchors,  
then insert mounting screws.  
Check level if desired, then  
tighten screws.  
Cover plate  
(optional)  
Connect wires  
1. Match each labeled wire with same  
letter on the terminal block(s).  
CT87N  
2. Use a screwdriver to loosen screw  
terminals, insert bare wire into  
slots, then tighten screws.  
3. Push any excess wire back into the  
wall opening.  
Wiring CT87N  
[1] If wires will be connected to both R and Rc  
Labels don't match?  
If labels do not match letters on  
thermostat, see table below.  
terminals, remove the metal jumper.  
[2] Do not connect both O and B if you have a  
heat pump. Connect only the O wire. Wrap B  
wire with electrical tape and do not use.*  
Existing wires Connect to:  
R RH 5 V  
Terminal “R[1]  
Terminal “Rc[1]  
Terminal “O[2]  
Terminal “B[2]  
Terminal “G”  
[3] Do not use C or X. Wrap bare end of wire  
with electrical tape.  
Rc  
O
CT87K  
B
G F  
R
W W1 H  
Y Y1 M  
C X  
Terminal “W”  
Terminal “Y”  
Do not use  
*
*
W
Y
[3]  
Wiring CT87K  
* For heat pump systems, add a jumper  
wire from the Y to the W terminals.  
There should not be a wire from the  
wall to the W terminal.  
2-wire heat-only system: Connect one  
wire to R terminal, one wire to W terminal.  
3-wire hot water heat-only system: Connect  
wires R to R, W to W, and Y to Y terminals.  
Alternate wiring: 5 to R, 4 to W, and 6 to Y  
terminals.  
Electrical Ratings  
Voltage (50/60 Hz): 20 - 30 VAC  
Running current: 0.02 - 1.0 A  
3
69-1959EFS—04  
GeneralDetails
NameHoneywell CT87N The Round Non Programmable Thermostat Owner’s Manual
MakeHoneywell
LanguageEnglish
FiletypePDF (Download)
File size3.3 MB
Download PDF
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Honeywell CT87N The Round Non Programmable Thermostat Owner’s Manual