resideo RTH7400/RTH7500, RET97 Series Programmable Thermostat User Guide

resideo RTH7400/RTH7500, RET97 Series Programmable Thermostat User Guide

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

  • 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.

1. Turn OFF Power to Heating/Cooling System
   
   

2. Remove Old Thermostat
   
   Remove old thermostat but leave wallplate with wires attached.

3. Label Wires with Tags
   Label the wires using the supplied wire labels as you disconnect them, then remove the old wallplate.
   
   Wire color might not match labels.
   **Wire Labels

NOTE: Jumper wire used on old thermostat? If yes, note what letters the jumper connected and review in wiring section.
**

4. Separate Wallplate from New Thermostat
   
   Remove wallplate from the new thermostat.
   This thermostat contains a Lithium battery which may contain Perchlorate material.
   Perchlorate Material—special handling may apply, See www.dtsc.ca.gov/hazardouswaste/perchlorate
   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.
   CAUTION: To avoid possible compressor damage, do not run air conditioner if the outside temperature drops below 50°F (10°C).

5. Mount Wallplate
   Mount the new wallplate using the included screws and anchors.
   
   Drill 3/16-in. holes for drywall
   Drill 7/32-in. holes for plaster

6. Connect Wires
   Simply match wire labels
   
   Remove metal jumper if you have both R and Rc 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.

7. Install Batteries
   
   
   

8. Install Thermostat onto Wallplate
   
   Install thermostat onto the wallplate on the wall.
   

9. Turn Power Back ON
   
   Turn the power back on to the heating/cooling system.
   

10. Set Time and Date
    Press or   to set month, then press NEXT.
    Press or  to set day, then press NEXT.
    Press or  to set year, then press DONE.
    
    Press s or t to set time, then press DONE to save and exit.

11. If your system type is…
    If your system type is:
    Single Stage Heat and Cool
    Congratulations, you’re done!
    Thermostat is set with energy saving schedule; see operating manual to adjust schedule.

If your system type is:
Multistage Heat and Cool
Heat Pump without Backup Heat
Heat Pump with Backup Heat
Heat Only
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.
If you are not sure of your system type or if you have other questions, call us toll-free at 1-800-468-1502.

12. System Setup

Step 1
Press and release the left button

Step 2
Press and hold the center button until the screen changes (approximately 5 seconds).

NOTE: Some functions may not appear due to thermostat model or previous selections made.

Step 3

1. Press  t to change setting.
2. Press NEXT to advance to next function.
3. Press DONE to save & exit.

21 = Year 21xx

0130 Year Setting (second two digits)| 01 – 99 (i.e., 2001 – 2099)
0140 Month Setting| 01 – 12 (i.e., January – December)
0150* Date Setting| 01 – 31
0170 Select System Type| 1.     Heat/cool: Gas, oil or electric heating with central air conditioning. 2 Heat pump:

2.     Heat pump without backup or auxiliary heat.

3.     Heat only: Gas, oil or electric heat without central air conditioning.

4.     Heat only with fan: Gas, oil or electric heat without central air conditioning.

5.     Hot water heat only (no fan): Gas, oil or hot water heat without central air conditioning.

6.      Cool only: Central air conditioning only.

7.     Heat pump: Heat pump with backup or auxiliary heating.

8.     Heat/Cool Multiple stages: 2 heat stages (wires on W and W2), 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 Contro| 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 heating system (thermostat controls fan operation)

0190 Heat Pump Changeover Valve (for heat pumps only)| 0 Cooling changeover valve: Use this setting if you connected a wire labeled “O” to the O/B terminal (see page 22).

1 Heating changeover valve: Use this setting if you connected a wire labeled “B” to the O/B terminal (see page 23).

0240 Heating Cycle Rate| 5 Gas or oil furnace: Standard gas/oil furnace (less than 90% efficiency).

9 Electric furnace: Electric heating systems.

3 Hot water or high-efficiency furnace: Hot water system or gas furnace (more than 90% efficiency).

1 Gas/oil steam or gravity system: Steam or gravity heat systems

0270 Emergency Heat Cycle Rate (heat pumps only)| Settings 5, 9, 3, or 1 recommended. Other settings: 2, 4, 6, 7, 8, 10, 11, 12.

The number indicates how frequently the system cycles on and off to maintain the set temperature.

A higher number means the system is on and off for shorter amounts of time, a lower number means longer on and off times. When these settings are set to match the system type, the thermostat controls temperature more accurately.

Preferences (optional)

Use the Setup and Navigation steps in 12a to set Display Preferences.

1

| Manual changeover (Heat/Cool/Off).

Automatic changeover (Heat/Cool/Auto/Off). Automatically turns on Heat or Cool based on room temperature. Note: System maintains minimum 3°F difference between heat and cool settings.

Temperature Format

(°F/°C)

| 0

1

| Fahrenheit

Celsius

Daylight Saving Time On/Off| 0

1

2

| Off: No adjustment for daylight saving time.

On: Auto-change to daylight saving time (for areas that do not use the new 2007 DST calendar). On: Auto-change to daylight saving time (2007 and beyond, for areas that use the new 2007 DST calendar).

Furnace Filter Change Reminder| 0

1

2

3

4

5

6

| Off (no reminder)

Reminder in about 1 month Reminder in about 3 months Reminder in about 6 months Reminder in about 9 months Reminder in about 1 year Reminder in about 3 years

Smart

Response ® Technology

| 1

0

| On

Off

Maximum Heat Temperature Limit

(select models only)

| 90°F (other options: 40-89°F [4-32°C])
1| Minimum Cool Temperature Limit

(select models only)

| 50°F (other options: 51-99°F [11-37°C])
Clock Format| 12

24

| 12-hour clock (i.e., “3:30 pm”)

24-hour clock (i.e., “15:30”)

Wiring Notes

Conventional system

Alternate wiring (conventional systems)

1. Remove metal jumper connecting R and Rc only if you must connect both R and Rc wires.
2. f 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.
3. 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.

Heat pump

Connect wires: Heat Pump

1. Match each labeled wire with same letter on new thermostat.
2. Use a screwdriver to loosen screws, insert wires into hole under screw, then tighten screws until wire is secure.
3. If E and Aux do not each have a wire connected, use a small piece of wire to connect them to each other.
4. Push any excess wire back into the wall opening.

Alternate wiring (heat pump system only)

1. eave metal jumper in place, connecting R & Rc terminals.

2. If your old thermostat had both V and VR wires, stop now and contact a
   qualified contractor for help.

3. If your old thermostat had separate O and B wires, attach the B wire to
   the C terminal. If another wire is attached to the C terminal, stop now
   and contact a qualified contractor for help.

4. If your old thermostat had Y1, W1 and W2 wires, stop now and contact
   a qualified contractor for help.

5. If L terminal is used, C terminal wire must be connected (contact a
   contractor if there is no C wire).

6. If E and Aux terminals do not each have a wire connected, use a small
   piece of wire to connect them to each other.

Customer assistance

For assistance with this product, please visit customer.resideo.com
or call Customer Care toll-free at 1-800-468-1502.

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