Honeywell RET97C User Manual

Touchscreen

Programmable

Thermostat

Owner’s Manual

Read and save these instructions.

For help please visit yourhome.honeywell.com

Installation is Easy

RTH7600

RET97C Series

1.Label wires and remove your old thermostat

2.Install and wire your new thermostat

3.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

Do you need assistance? 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.

Hg

NO MERCURY

NO BOTE

MERCURIO

ATTENTION: MERCURY RECYCLING NOTICE

This product does not contain mercury. However, this product may replace a product that contains mercury. Mercury and products containing mercury should not be discarded in household trash.

For more information on how and where to properly recycle a thermostat containing mercury in the United States, please refer to the Thermostat Recycling Corporation at www.thermostat-recycle.org.

For mercury thermostat recycling in Canada, please refer to Switch the Stat at www.switchthestat.ca

This thermostat contains a Lithium battery which may contain Perchlorate material.

Perchlorate Material—special handling may apply, See www.dtsc. ca.gov/hazardouswaste/perchlorate

NOTICE: To avoid possible compressor damage, do not run air conditioner if the outside temperature drops below 50°F (10°C).

Customer assistance

For assistance with this product, please visit http://yourhome.honeywell.com.

Or call Honeywell Customer Care toll-free at 1-800-468-1502.

To save time, please note your model number and date code before calling.

Pull at bottom to remove thermostat from wallplate.

Turn thermostat over to find model number and date code.

® U.S. Registered Trademark. Patents pending.

US Patent No. 6,595,430; 7,114,554; 7,274,972; 7,225,054 and other patents pending

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Table of contents
Installation
Installation.............................................	3
Advanced Installation..........................	10
About your new thermostat
Controls and Home screen
quick reference...................................	13
Preset energy-saving schedules........	14

Programming and operation
Setting the clock.................................	14
Adjusting program schedules.............	15
Overriding schedules temporarily.......	15
Overriding schedules permanently.....	16
Auto Changeover................................	16
Change filter.......................................	17
Replace batteries................................	18
Appendices
Troubleshooting..................................	19
Limited warranty.................................	20

1 Turn Off Power to Heating/Cooling System

or

Circuit breaker	Heating/cooling system
box	power switch

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2 Remove Old Thermostat

Remove old thermostat but leave wallplate with wires attached.

If you have an older thermostat with a

Do not remove wallplate yet sealed mercury tube, turn to page 2 for proper disposal instructions.

Terminal designation

C

C

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

	C
	C
M28100	Terminal designation

4 Separate Wallplate from New Thermostat

Remove wallplate from the new thermostat and mount onto wall.

M28073

Wallplate

4

5 Mount Wallplate

Mount the new wallplate using the included screws and anchors.

MCR28094

Drill 3/16-in. holes for drywall

Drill 3/32-in. holes for plaster

6 Connect Wires

Simply match wire labels.

If labels do not match letters on the thermostat, check “Alternate Wiring (Conventional Systems)” on page 6 and connect to terminal as shown here (see notes, below).

We are here to help. Call 1-800-468-1502 for wiring assistance.

CONVENTIONAL

SCREW

INSERT WIRES

THEN TIGHTEN SCREWS

LABELED WIRES	CONVENTIONAL

C

G

Y

W

RC

R

G

W

R

WIRE HOLE

W2

Y2

MCR28070

Remove metal jumper if you have both R and Rc wires.

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Alternate Wiring (Conventional Systems)

If labels do not match terminals, connect wires as shown here (see notes, below).

RC

R

W

Y

G

C

Y2

W2

Rc	2
R	2
W
Y
G
C	3
Y2
W2

MCR28076

Remove metal jumper connecting R and Rc only if you must connect both R and 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.

Alternate Wiring (Heat Pump)

If labels do not match letters on thermostat, see page 7.

HEAT PUMP

C

G

Y

O/B

RC

R

x Au

G

O

R

HEAT PUMP

Aux NOTE: If E and Aux

Edo not each have a wire connected, use a

Lsmall piece of wire to connect them to each other.

MCR33552

6

Alternate Wiring (For Heat Pumps Only)

2

3

3	5
	5
	6
4	6

MCR28077

Leave metal jumper in place, connecting R & Rc terminals.

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

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.

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

If L terminal is used, C terminal wire must be connected (contact a

5contractor if there is no C wire).

If E and Aux terminals do not each have a wire connected, use a small

6piece of wire to connect them to each other.

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7 Install Batteries

Install two AA alkaline batteries and remove tab.

Remove

MCR28101

Back of thermostat	MCR27518

8 Install Thermostat onto Wallplate

Install thermostat onto the wallplate on the wall.

M28103

9 Turn Power Back On

Turn the power back on to the heating/cooling system.

or

Circuit breaker box Heating/cooling system power switch

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10Set Time and Date

1.Press σ or τ to set month, then press NEXT.

2.Press σ or τ to set day, then press NEXT.

3.Press σ or τ to set year, then press DONE.

4.Press σ or τ to set time, then press DONE to save and exit.

6	2012	15	10:10
Go Back	Next	Done	Done

MCR33548	MCR33549

11 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 next page 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 multistage conventional systems.

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Advanced Installation

Enter System Setup

1.Press and release the left button.

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

Mon
72			Set To
		6:30PM 72		System	Fan Auto
System		Fan Auto
	Cool			Heat Off Cool
System	n	Schedule		System	Fan
			Clock & Mode		Done
			MCR33550		MCR33597

Changing Settings

1.Press the σ or τ button to change the setting.

2.Press NEXT to advance to next function.

3.Press DONE to save & exit.

Function Setting

0120 20

Go Back Next

Done

MCR33551

NOTE: Some functions in the following pages may not appear due to previous selections made.

Function	Description	Setting
		Press the σ or τ button to change the setting.
0120	Year Setting	20	= Year 20xx
	(first two digits)	21	= Year 21xx
0130	Year Setting	01	- 99	(i.e., 2001 - 2099
	(second two digits)
0140	Month Setting	01	- 12	(i.e., January - December)
0150	Date Setting	01	- 31

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Function	Description	Setting
		Press the σ or τ button to change the setting.
0170	Select System Type	1 Heat/cool: Gas, oil or electric heating with central air
			conditioning.
		2	Heat pump: 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).

10Heat/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 heating
			system (thermostat controls fan operation).
0190	Heat Pump Changeover Valve	0 Cooling changeover valve: Use this setting if you connected
	(for heat pumps only)		a wire labeled “O” to the O/B terminal (see page 6).
		1	Heating changeover valve: Use this setting if you connected
			a wire labeled “B” to the O/B terminal (see page 7).
0240	Heating Cycle Rate	5 Gas or oil furnace: Standard gas/oil furnace (less than 90%
			efficiency).
		9	Electric furnace: Electric heating systems.
		3	Heat pump, 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.

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.

0270	Emergency Heat Cycle Rate	9	Electric furnace: Electric heating systems.
	(heat pumps only)
0300	Manual/Auto Changeover	0	Manual changeover (Heat/Cool/Off).
		1	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.
0320	Temperature Format (°F/°C)	0	Fahrenheit
		1	Celsius
0330	Daylight Saving Time On/Off	0	Off: No adjustment for daylight saving time.
		1	On: Auto-change to daylight saving 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).

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Function	Description	Setting
		Press the σ or τ button to change the setting.
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 Response® Technology	1 On
		0	Off
0600	Maximum Heat Setting	90°F		(other options: 40-89°F [4-32°C])
0610	Minimum Cool Setting	50°F		(other options: 51-99°F [11-37°C])
0640	Clock Format	1212-hour clock (i.e., “3:30 pm”)
		2424-hour clock (i.e., “15:30”)

About your new thermostat

Your new Honeywell thermostat has been designed to give you many years of reliable service and easy-to-use, push-button climate control.

•Large touchscreen display with backlight is easy to read—even in the dark.

•Daily program schedules maximize comfort and economy.

•One-touch temp control overrides program schedule at any time.

•Precise comfort control keeps temperature within 1°F of the level you set.

•Change/check reminder lets you know when to replace furnace filter.

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