Honeywell PROGRAMMABLE THERMOSTAT RTH6350 User manual

RTH6350/RTH6450/RET93E0/RET95E0
Programmable Thermostat
Quick Installation Guide
69-2696ES-03

69-2696ES—03 ii
Installation is Easy
Label wires and remove your old thermostat
Install and wire your new thermostat
Set your new thermostat to match your heating/cooling
system
– It is preset for the most common system
We are here to help.
Call 1-800-468-1502 for wiring
assistance before returning
the thermostat to the store.

1 69-2696ES—03
1Turn Off Power to Heating/
Cooling System
M28097

69-2696ES—03 2
Remove old thermostat but leave wallplate with
wires attached.
2Remove Old Thermostat
M28099
Is there a sealed tube containing
mercury? If so, see notice below
for proper disposal instructions.
Leave wallplate in
place
Old thermostat
Cover
MERCURY NOTICE: Do not place your old
thermostat in the trash if it contains mercury in a
sealed tube. Contact your local waste management
authority for instructions regarding recycling and
proper disposal.

3 69-2696ES—03
3Label Wires with Tags
Label the wires using the supplied wire labels as you
disconnect them.
M28100
Wire Labels
M28093
NOTE: Jumper wire used on old thermostat? If yes, note
what letters the jumper connected and review in wiring
section.

69-2696ES—03 4
M28343
4Separate Wallplate from
New Thermostat
Wallplate
Pull here to remove wallplate from new
thermostat.
Remove battery holder.

5 69-2696ES—03
M2834
M28344
5Insert Quick Reference Card
Insert quick reference card into slot in back of thermostat.
Thermostat

69-2696ES—03 6
Mount the new wallplate using the included screws
and anchors.
6Mount Wallplate
M28345
Drill 3/32-in. holes for plaster.
Drill 3/16-in. holes for drywall.
Use hammer to tap the anchors into the wall.

7 69-2696ES—03
Simply match wire labels.
MCR31270A
W2 G
G
W
W
Y
Y
R
R
RcY2
7Connect Wires
Labels don’t match? See page 22.
Have a Heat Pump system? See pages 23-24.
We are here to help.
Call 1-800-468-1502 for wiring assistance.
Remove metal
jumper if you have
both Rand Rc wires.
CONVENTIONAL

69-2696ES—03 8
Install two AA alkaline batteries.
M28346
Back of thermostat
8Install Batteries

9 69-2696ES—03
Install thermostat onto the wallplate on the wall.
MCR31271
9Install Thermostat onto Wallplate

69-2696ES—03 10
Turn the power back on to the heating/cooling system.
10 Turn Power Back On
M28098

11 69-2696ES—03
If your system type is:
q Single Stage Heat and Cool
Congratulations, you’re done!
If your system type is:
q Multistage Heat and Cool
q Heat Pump* without Backup Heat
q Heat Pump* with Backup Heat
q Heat Only
q Cool Only
Continue with advanced installation
on page 12 to match your thermostat to your system
type.
*Heat Pump—an air conditioner that provides cooling in the
summer, and also runs in reverse in the winter to provide
heating.
If you are not sure of your system type or if you have
other questions, call us toll-free at 1-800-468-1502.
This thermostat works on 24 volt or 750 mV systems. It will
NOT work on 120/240 Volt systems.
11 If your system type is...

Advanced Installation
System setup.......................................................................13
Wiring ..................................................................................22
Troubleshooting ...................................................................25
Customer assistance...........................................................27
Limited warranty ..................................................................28

RTH6350/RTH6450/RET93E0/RET95E0 Series
13 69-2696ES—03
About your new thermostat
SETUP WIRING ASSISTANCE TROUBLESHOOTING
M28348
Press and hold the sand FAN buttons until the screen
changes (approximately 5 seconds).
System setup
Done Next
1
0
M28349
SettingFunction
Press s or tto change settings.
Press NEXT to advance
to next function.
Press DONE to exit
and save settings.

Advanced Installation Guide
69-2696ES—03 14
SETUPWIRINGASSISTANCETROUBLESHOOTING
Function 1: System type
Press the s or t button to select the type
of system you have in your home:
0Heating & cooling: Gas, oil or electric heating with
central air conditioning.
1Heat pump: Outside compressor provides both heating
and cooling without backup or auxiliary heat.
2Heating only: Gas, oil or electric heating without
central air conditioning.
3Heating only with fan: Gas, oil or electric heating
without central air conditioning. (Use this setting if you
could turn the fan on and off with a fan switch on your
old thermostat.)
4Cool only: Central air conditioning only.
5Heat Pump: Outside compressor provides both heating
and cooling with backup or auxiliary heating.
6Heat/Cool Multiple Stages: Two heat stages (wires on W
and W2), two cooling stages (wires on Y and Y2).
7Heat/Cool Multiple Stages: Two heat stages (wires on
W and W2), one cooling
stage (wire on Y).
8Heat/Cool Multiple
Stages: One heat stage
(wire on W), two cooling
stages (wires on Y and
Y2).
M28351
Press to change
setting. When
correct setting is
selected, press
NEXT to display
next function.
Done Next
1
0
M28350

RTH6350/RTH6450/RET93E0/RET95E0 Series
15 69-2696ES—03
SETUP WIRING ASSISTANCE TROUBLESHOOTING
Function 2: Heat pump changeover valve
Done Next
2
0
M28352
Press the s or t button to select whether your change-
over valve is used in heating or cooling:
NOTE: If Function 2 does not appear, please turn to the
next page to continue.
0Cooling changeover valve: Use this setting if you
connected a wire labeled “O” to the O/B wire terminal
(see page 23).
1Heating changeover valve: Use this setting if you
connected a wire labeled “B” to the O/B wire terminal
(see page 23).
M28351
Press to change setting.
When correct setting is
selected, press NEXT to
display next function.

Advanced Installation Guide
69-2696ES—03 16
SETUPWIRINGASSISTANCETROUBLESHOOTING
Function 3: Heating fan control
Done Next
3
0
M28353
Press the s or t button to select your heating system
and fan operation:
NOTE: If Function 3 does not appear, please turn to the
next page to continue.
0Gas or oil heat: Use this setting if you have a gas or
oil heating system (system controls fan operation).
1Electric heat: Use this setting if you have an electric
heating system (thermostat controls fan operation).
M28351
Press to change setting.
When correct setting is
selected, press NEXT to
display next function.

RTH6350/RTH6450/RET93E0/RET95E0 Series
17 69-2696ES—03
SETUP WIRING ASSISTANCE TROUBLESHOOTING
Function 5: Heating cycle rate
Done Next
5
5
M28354
Press the s or t button to select your heating system
and optimize its operation:
NOTE: If Function 5 does not appear, please turn to the
next page to continue.
5Gas or oil furnace: Use this setting if you have a
standard gas or oil furnace that is less than 90%
efficient.
9Electric furnace: Use this setting if you have any type
of electric heating system.
3Hot water or high-efficiency furnace: Use this
setting if you have a hot water system or a gas furnace
of greater than 90% efficiency.
1Gas/oil steam or gravity system: Use this setting if
you have a steam or gravity heat system.
M28351
Press to change setting.
When correct setting is
selected, press NEXT to
display next function.

Advanced Installation Guide
69-2696ES—03 18
About your new thermostat
SETUPWIRINGASSISTANCETROUBLESHOOTING
Function 6: Stage 2 Heat cycle rate
Done Next
6
5
MCR31272
Press the s or t button to select your heating system
and optimize its operation:
NOTE: If Function 6 does not appear, please turn to the
next page to continue.
5Gas or oil furnace: Use this setting if you have a
standard gas or oil furnace that is less than 90%
efficient.
9Electric furnace: Use this setting if you have any type
of electric heating system.
3Hot water or high-efficiency furnace: Use this
setting if you have a hot water system or a gas furnace
of greater than 90% efficiency.
1Gas/oil steam or gravity system: Use this setting if
you have a steam or gravity heat system.
M28351
Press to change setting.
When correct setting is
selected, press NEXT to
display next function.