Quick Installation Guide
RTHL3550
Non-programmable Thermostat
69-2697ES-03
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
are here to help.
Call 1-800-468-1502 for wiring assistance before returning the thermostat to the store.
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Turn Off Power to Heating/ |
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Cooling System |
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M28097
1 69-2697ES—03
2 Remove Old Thermostat
Remove old thermostat but leave wallplate with wires attached.
Leave wallplate in place
Old thermostat
Is there a sealed tube containing mercury? If so, see notice below for proper disposal instructions.
Cover
M28099
MERCURY NOTICE: Do not place your old thermostat in the trash if it contains mercury in a sealed tube. Contact the Thermostat Recycling
Corporation at www.thermostat-recycle.org or 800- 238-8192 for information on how and where to properly and safely dispose of your old thermostat.
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3 Label 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.
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4 |
Separate Wallplate from |
New Thermostat |
Remove battery holder.
Pull here to remove wallplate from new thermostat.
M28343
Wallplate
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5 Mount Wallplate
Mount the new wallplate using the included screws and anchors.
M28345
Drill 3/32-in. holes for plaster.
Drill 3/16-in. holes for drywall.
Use hammer to tap the anchors into the wall.
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6 Connect Wires
Simply match wire labels.
Remove metal jumper if you have both R and Rc wires.
G |
W |
Y
R
Y2 W2 G W |
Y R Rc |
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CONVENTIONAL |
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MCR31270A |
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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.
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7 Install Batteries
Install two AA alkaline batteries.
M28346
Back of thermostat
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8 Install Thermostat onto Wallplate
Install thermostat onto the wallplate on the wall.
MCR32613
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9 Turn Power Back On
Turn the power back on to the heating/cooling system.
M28098
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10 If your system type is...
If your system type is:
θ Single Stage Heat and Cool
Congratulations, you’re done!
If your system type is:
θMultistage Heat and Cool
θHeat Pump* without Backup Heat
θHeat Pump* with Backup Heat
θHeat Only
θCool Only
Continue with advanced installation
on page 11 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.
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Advanced Installation |
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System setup....................................................................... |
12 |
Wiring................................................................................... |
22 |
Troubleshooting.................................................................... |
25 |
Customer assistance........................................................... |
27 |
Limited warranty................................................................... |
28 |
Advanced Installation Guide
System setup
Press and hold the σ and FAN buttons until the screen changes (approximately 5 seconds).
SETUP
MCR33377
Press σ or τ to change settings.
Function Setting
Done |
Next |
|
MCR32600 |
Press DONE to exit |
Press NEXT to advance |
and save settings. |
to next function. |
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RTHL3550
Function 1: System type
Press the σ or τ button to select the type of system you have in your home:
SETUP
Done Next
MCR32599
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).
Press to change setting. When correct setting is selected, press NEXT to display next function.
MCR32602 |
13 |
69-2697ES—03 |
SETUP
WIRING
Advanced Installation Guide
AboutFunctionyour2: nHewatthermostpump changeovert valve
Press the σ or τ button to select whether your changeover valve is used in heating or cooling:
NOTE: If Function 2 does not appear, please turn to the next page to continue.
Done Next
MCR32605
TROUBLESHOOTING ASSISTANCE
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).
Press to change setting. When correct setting is selected, press NEXT to display next function.
MCR32602
69-2697ES—03 14
RTHL3550
AboutFunctionyour3: Heatingw thermostatfan control
Press the σ or τ button to select your heating system and fan operation:
NOTE: If Function 3 does not appear, please turn to the next page to continue.
Done Next
MCR32603
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).
Press to change setting. When correct setting is selected, press NEXT to display next function.
MCR32602
SETUP
TROUBLESHOOTING ASSISTANCE WIRING
15 69-2697ES—03
SETUP
TROUBLESHOOTING ASSISTANCE WIRING
Advanced Installation Guide
AboutFunctionyour5: Heatingw thermostatcycle rate
Press the σ or τ 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.
Done Next
MCR32604
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.
Press to change setting.
When correct setting is selected, press NEXT to display next function.
MCR32602
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RTHL3550
Function 6: Stage 2 Heat cycle rate
Press the σ or τ 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.
SETUP
Done Next
MCR32606
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.
Press to change setting.
When correct setting is selected, press NEXT to display next function.
MCR32602
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Advanced Installation Guide
Function 12: Manual/Auto Changeover
Press the σ or τ button to select Manual or Auto Changeover:
SETUP
Done Next
MCR32609
0Manual Changeover: (Heat/Off/Cool)
1Automatic Changeover: (Heat/Off/Cool/Auto) Automatically turns on heat or cool based on room temperatures.
CAUTION: To avoid possible compressor damage, set to option 0 if the outside temperature drops below 50 ºF (10 ºC).
NOTE: System maintains a minimum 3 ºF difference between heat and cool settings.
Press to change setting. When correct setting is selected, press NEXT to display next function.
MCR32602
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