background image

7

Simply match wire labels.

Remove metal jumper if you have both 

R

 and 

Rc

 wires.

MCR28070

W2

Y2

C

G

Y

W

RC

R

LABELED WIRES

SCREW

CONVENTIONAL

INSERT WIRES 

THEN TIGHTEN SCREWS

WIRE HOLE

Y

G

R

W

CONVENTIONAL

6

Connect Wires

Labels don’t match?

 See Wiring Notes (over).

Have a Heat Pump system?

 See Wiring Notes (over).

Call 1-800-468-1502 for wiring assistance.

Summary of Contents for RET97

Page 1: ...Quick Start Guide Programmable Thermostat RTH7400 RTH7500 RET97 Series ...

Page 2: ...to match your heating cooling system This thermostat works with virtually all System Types 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 This thermostat works on 24 volt or 750 mV systems It will NOT work on 120 240 Volt systems ...

Page 3: ...Remove old thermostat but leave wallplate with wires attached 2 Remove Old Thermostat 1 Turn OFF Power to Heating Cooling System Is there a sealed tube containing mercury If so see back cover for proper disposal instructions Leave wallplate in place Old thermostat Cover or ...

Page 4: ... labels as you disconnect them then remove the old wallplate 3 Label Wires with Tags Wire Labels Wire color might not match labels M31545 NOTE Jumper wire used on old thermostat If yes note what letters the jumper connected and review in wiring section ...

Page 5: ...5 Remove wallplate from the new thermostat M28073 4 Separate Wallplate from New Thermostat Wallplate ...

Page 6: ...6 Mount the new wallplate using the included screws and anchors 5 Mount Wallplate MCR28094 Drill 3 16 in holes for drywall Drill 7 32 in holes for plaster ...

Page 7: ...wires MCR28070 W2 Y2 C G Y W RC R LABELED WIRES SCREW CONVENTIONAL INSERT WIRES THEN TIGHTEN SCREWS WIRE HOLE Y G R W CONVENTIONAL 6 Connect Wires Labels don t match See Wiring Notes over Have a Heat Pump system See Wiring Notes over Call 1 800 468 1502 for wiring assistance ...

Page 8: ...8 Install two AA alkaline batteries and remove tab MCR28101 Back of thermostat Remove tab 7 Install Batteries MCR28102 ...

Page 9: ...9 M28103 Install thermostat onto the wallplate on the wall Turn the power back on to the heating cooling system 8 Install Thermostat onto Wallplate 9 Turn Power Back ON or ...

Page 10: ...12 10 Set Time and Date Press s or t to set month then press NEXT Press s or t to set day then press NEXT Press s or t to set year then press DONE Press s or t to set time then press DONE to save and exit Month Year Day MCR33843 Done 10 10 ...

Page 11: ...d Cool q Heat Pump without Backup Heat q Heat Pump with Backup Heat q Heat Only q Cool Only Continue to step 12a 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 11 If your system type is If you are not sure of your system type or if you have other questions call us toll free at 1...

Page 12: ... 2 cooling stages wires on Y and Y2 9 Heat Cool Multiple stages 2 heat stages wires on W and W2 1 cooling stage wire on Y 10 Heat Cool Multiple stages 1 heat stage wire on W 2 cooling stages wires on Y and Y2 0180 Heating Fan Control 0 Gas or oil heat Use this setting if you have a gas or oil heating system system controls fan operation 1 Electric heat Use this setting if you have an electric heat...

Page 13: ...g time for areas that do not use the new 2007 DST calendar 2 On Auto change to daylight saving time 2007 and beyond for areas that use the new 2007 DST calendar 0500 Furnace Filter Change Reminder 0 Off no reminder 1 Reminder in about 1 month 2 Reminder in about 3 months 3 Reminder in about 6 months 4 Reminder in about 9 months 5 Reminder in about 1 year 6 Reminder in about 3 years 0530 Smart Resp...

Page 14: ... Rc wires If your old thermostat had both R and RH wires remove metal jumper Connect the R wire to the Rc terminal and the RH wire to the R terminal If your old thermostat had only 1 C or C1 wire connect it to the C terminal If your old thermostat had 2 C or C1 wires wrap each separately with electrical tape and do not connect them C G Y W RC R W2 Y2 Y2 W2 W Y G MCR32160 R 2 Rc 2 C 3 Conventional ...

Page 15: ...ly dispose of your old thermostat CAUTION To avoid possible compressor damage do not run air conditioner if the outside temperature drops below 50 F 10 C This thermostat contains a Lithium battery which may contain Perchlorate material Perchlorate Material special handling may apply See www dtsc ca gov hazardouswaste perchlorate Customer assistance For assistance with this product please visit htt...

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