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Honeywell Z-Wave Series User Manual

Honeywell Z-Wave Series
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RCHT8600 Series Z-Wave
Programmable Thermostat
Quick Installation Guide
Tools you will need Tools you may need
Wire stripper
Needle-nose pliers Drill and
drill bit (7/32 in)
Included in your box
Small flat head scr
ewdriver
Phillips scr
ewdriver
Pencil
Level
Screws and
anchors
UWP™
Mounting
System
(UWP)
RCHT8600
Thermostat
Quick Install
Guide
Question and Answer IconNeed help?

Do you have a question about the Honeywell Z-Wave Series and is the answer not in the manual?

Honeywell Z-Wave Series Specifications

General IconGeneral
ProtocolZ-Wave
DisplayBacklit LCD
Power SourceBattery or Hardwired
Z-Wave Frequency908.42 MHz (US)
Humidity SensorNo
CompatibilityZ-Wave certified hubs
Remote AccessYes
Voice ControlYes (with compatible hub)
Energy Saving FeaturesYes

Summary

Removing Your Old Thermostat

Turn Power Off

To protect yourself and your equipment, turn off power at the breaker box or switch controlling your heating/cooling system.

Check System is Off

Change temperature on old thermostat. If no system turn-on within 5 minutes, power is off.

Remove Faceplate

Grasp and gently pull faceplate. Some thermostats may have screws, buttons, or clasps.

Check for 120/240V Wires

Identify thick black wires with wire nuts or if thermostat is 120V or higher to avoid line voltage system incompatibility.

Wiring Preparation

Take Wiring Picture

Capture image of wiring with terminal letters for reference when wiring the new thermostat.

Record Terminal Connections

Document wires present in terminals, excluding jumpers.

Write Down Wire Colors

Mark connected wires and write down their corresponding colors.

Installing Your RCHT8600 Thermostat

Disconnect Wires and Remove Wall Plate

Use a screwdriver to release wires, then label each wire matching the terminal letter.

Bundle and Insert Wires Through UWP

Pull open UWP, insert wires through back, ensuring at least 1/4-inch is exposed.

Insert Wall Anchors

Use UWP to mark and drill holes, then insert wall anchors flush with the wall.

Set R-Switch and Insert Wires

Set R-switch based on wiring notes and insert wires into inner holes of UWP terminals.

Power Options and UWP Wiring

AC Power Connection

Insert R and C wires into designated terminals for primary AC power. Remove wires by depressing terminal tabs.

Battery Power

Insert 3 AA batteries for primary or backup power, matching polarity to compartment marks.

Secure Wires in UWP Terminals

Push tabs to insert wires into UWP terminals until firm. Gently tug to verify security.

System Setup Process

Turn Power ON

Turn on power at the breaker box or switch controlling the heating/cooling system.

Start Setup

Return to thermostat, confirm 'START SETUP' screen, and touch START SETUP to begin.

Navigate and Edit Setup Options

Use navigation buttons to scroll through options and edit values by touching text or 'Edit'.

Finish Setup

Continue until 'FINISH SETUP' is displayed, then touch 'Select' or text area.

Set Time and Date

Set daylight saving time, date, clock format, and time on subsequent screens.

Thermostat Setup Complete

Thermostat is now set up. Refer to page 8 for basic operation information.

Key Thermostat Features

System Status Information

Displays current system status: Cool On, Heat On, Emergency Heat On, Recovery, Auto Changeover On.

Schedule Information

Indicates time or occupancy-based temperature control is active.

Desired Temperature

Shows the target temperature setting for the system.

Indoor Temperature/Humidity

Displays current indoor temperature or percentage of indoor relative humidity.

Mode Selection

Allows selection of system mode: Auto, Heat, Cool, Off, or Emergency Heat.

Menu Options

Access user options by touching Menu; access advanced options with a long press.

Z-Wave Connection Status

Indicates the current connection status of the thermostat within the Z-Wave network.

Messaging Display

Shows device setup options, menu options, reminders, and schedule overrides.

Schedule Period Display

Shows the current schedule period: Wake, Away, Home, or Sleep.

Fan Mode Selection

Allows selection of fan mode: Auto, On, or Circulate.

Thermostat Feature Details

Z-Wave Plus Certification

Certified for Z-Wave Plus, works with Z-Wave compliant controllers for programming and automation.

Flexible Scheduling

Fully programmable when not in Z-Wave network, with different settings for heating/cooling periods.

Ambient Display Information

Shows ambient temperature, % relative humidity, and HVAC system status.

Auto Change from Heat to Cool

Automatically determines heating or cooling needs to reach desired temperature.

Smart Alerts

Notifies about HVAC system issues and reminds for filter changes.

Smart Response Technology

Learns system cycle times to deliver desired temperature at the scheduled time.

Power Method

Powered by 3x AA batteries or 24 VAC (C or common wire).

System Setup Options Guide

Scheduling Options (ISU 120)

Configure schedule type: Non-Programmable, 1-Week, 5-2, 5-1-1, or 7-Day Programmable.

Temperature Indication Scale (ISU 125)

Select Fahrenheit or Celsius for temperature display.

Outdoor Temperature Sensor (ISU 130)

Configure for wired outdoor sensor connection for balance point and Aux Heat lockout.

Heating System Type (ISU 200)

Select basic system type: Conventional Forced Air, Heat Pump, Radiant Heat, or None (Cool Only).

Heating Equipment Type (ISU 205)

Select specific equipment: Gas Forced Air, Oil Forced Air, Electric Forced Air, Hot Water Fan Coil.

Reversing Valve O/B (ISU 218)

Select O/B terminal function for heat pumps: O/B in Cool or O/B in Heat.

Cool Stages/Compressor Stages (ISU 220)

Set number of Cool or Compressor stages (0, 1, or 2) for equipment control.

Heat Stages / Backup Heat Stages (ISU 221)

Set number of Heat or Aux/E stages (1, 2 for Heat; 0, 1 for Backup) for equipment control.

Fan Control (ISU 230)

Select fan control: Equipment or Thermostat. Only for Electric Forced Air or Fan Coil.

Aux/E Control (ISU 253)

Configure Auxiliary/Emergency heating control: Both Aux/E or Either Aux/E.

Advanced System Setup Options

EM Heat Type (ISU 256)

Define Emergency Heat type: Electric, Gas/Oil (or Fossil Forced Air).

Fossil Kit Control (ISU 260)

Configure Fossil Fuel Kit control for Heat Pump systems.

System Changeover (ISU 300)

Set automatic or manual control for heating and cooling system modes.

Auto Differential (ISU 303)

Set minimum degrees rise/fall for mode switching in auto-changeover.

High Cool Stage Finish (ISU 305)

Control higher cooling stage operation until setpoint is reached (for 2 cool stages).

High Heat Stage Finish (ISU 306)

Control higher heating stage operation until setpoint is reached (for 2+ heat stages).

Aux Heat Droop (ISU 340)

Set Aux heat droop for heat pump systems: Comfort or degree increments.

Up Stage Timer Aux Heat (ISU 350)

Set timer for auxiliary heat activation after highest stage of previous heating equipment.

Balance Point (Compressor Lockout) (ISU 355)

Set outdoor temperature to lockout heat pump and run Aux Heat only.

Aux Heat Lock Out (ISU 356)

Set outdoor temperature to optimize energy bills by limiting expensive Aux Heat.

Cool 1 CPH (ISU 365)

Set cooling cycle rate for stage 1 (cycles per hour at 50% load).

Further System Setup Options

Cool 2 CPH (ISU 366)

Set cooling cycle rate for stage 2 (cycles per hour at 50% load).

Heat 1 CPH (ISU 370)

Set heating cycle rate for stage 1 (cycles per hour at 50% load).

Heat 2 CPH (ISU 371)

Set heating cycle rate for stage 2 (cycles per hour at 50% load).

Aux Heat CPH (ISU 375)

Set auxiliary heat cycle rate (cycles per hour at 50% load).

EM Heat CPH (ISU 378)

Set emergency heat cycle rate (cycles per hour at 50% load).

Compressor Protection (ISU 387)

Set minimum off timer for compressor to prevent early restart after shutdown.

Ext Fan Run Time in Cool (ISU 390)

Set fan run time after cooling ends for increased efficiency.

Ext Fan Run Time in Heat (ISU 391)

Set fan run time after heating ends for increased efficiency.

Smart Response (ISU 425)

Enable comfort setting to turn equipment on earlier for timely temperature match.

Minimum Cool Temperature Setpoint (ISU 430)

Set the lowest allowable temperature setpoint for cooling.

Maximum Heat Temperature Setpoint (ISU 431)

Set the highest allowable temperature setpoint for heating.

Lock Screen (ISU 435)

Configure screen lock: None, Partial, or Full.

Additional System Setup Settings

Indoor Sensor Configuration (ISU 500)

Configure remote indoor sensor for temperature readings.

Sensor Type (ISU 515)

Select resistance type of wired indoor sensor (10k or 20k).

Temperature Control Source (ISU 520)

Choose temperature source: thermostat, wired, or average of both.

Air Filters (ISU 702)

Set the number of air filters for system reminders.

Air Filter Replacement Reminders (ISU 711, 712)

Set reminders for changing air filters based on runtime or calendar.

Humidifier/Dehumidifier/Vent Filter Reminders

Set reminders for humidifier pad, dehumidifier filter, and vent filter replacement.

UV Devices Reminder (ISU 1100, 1105, 1106)

Set reminders for UV bulb replacement for A-Coil and Air Treatment.

Idle Brightness (ISU 1401)

Adjust brightness of the inactive backlight (idle screen).

Clock Format (ISU 1410)

Select 12-hour or 24-hour clock format.

Daylight Saving Time (ISU 1415)

Enable or disable Daylight Saving Time setting.

Z-Wave Configuration Parameters

Z-Wave Setup (Inclusion/Exclusion)

Add or remove the thermostat from a Z-Wave network via the MENU/Z-WAVE SETUP.

Z-Wave Network Status

Check thermostat inclusion status, node ID, and connection status within the Z-Wave network.

Z-Wave Power Mode

Change between battery mode or normal power mode when not included in Z-Wave network.

Z-Wave Connection Status Icons

Thermostat Connected to Z-Wave Network

Indicates thermostat is included and successfully connected to a Z-Wave network.

Thermostat Excluded from Z-Wave Network

Indicates the thermostat has been removed or excluded from the Z-Wave network.

Z-Wave Signal Loss or AC Power Loss

Indicates Z-Wave signal loss or AC power loss, affecting radio operation and battery life.

System Operation Settings

Cycle Through System Modes

Press Mode button to cycle through Auto, Heat, Cool, Em Heat, or Off system modes.

Fan Operation Settings

Cycle Through Fan Modes

Press Fan button to cycle through Auto, On, or Circulate fan modes.

Scheduling Options

Programmable vs. Non-Programmable Schedule

Thermostat schedule is optional and appears if enabled in Installer Setup.

Schedule Behavior in Z-Wave Network

When in Z-Wave network, schedule follows controller; local schedule is OFF by default.

Home and Away Periods

Only Home and Away periods appear on home screen when included in Z-Wave network.

Enabling Local Schedule with Z-Wave

Enable local schedule if controller lacks full thermostat class functions for differentiation.

Schedule Configuration Details

Default 5+2 Schedule (Z-Wave Included)

Shows default Mon-Fri; Sat-Sun schedule when thermostat is included in Z-Wave network.

Enabling Thermostat Schedule Menu

Ensure schedule is enabled via Installer Setup, ISU 120 for schedule type.

Program Schedule (Not in Z-Wave)

Functions as fully programmable when not operated by Z-Wave controller.

Default 5+2 Schedule (Z-Wave Excluded)

Shows default Mon-Fri; Sat-Sun schedule when thermostat is excluded from Z-Wave network.

Program Schedule Overrides

Temporary Schedule Override

Adjust temperature, hold until a specific time, then automatically returns to schedule.

Permanent Schedule Override

Adjust temperature and hold permanently until manually changed.

Wiring - Conventional Systems

Alternate Wiring Connections

Connect wires based on terminal labels or alternate configurations if labels do not match.

R and Rc/RH Wire Connections

Instructions for connecting R, Rc, and RH wires based on R Slider Tab position.

C and C1 Wire Connections

Guidelines for connecting C or C1 wires, and handling multiple C wires.

Wiring - Heat Pump Systems

Connect Labeled Wires

Match labeled wires to thermostat terminals and insert.

Alternate Heat Pump Wiring

Specific connection guidelines for heat pumps if labels do not match terminals.

Important Heat Pump Notes

Do NOT use W for heat pump applications; Auxiliary heat must wire to AUX or E.

Smart Response Technology

Learning Temperature Settings

Thermostat learns system time to reach programmed settings for comfort.

Battery Replacement Guide

When to Replace Batteries

Replace immediately when low battery icon appears or annually. Alkaline batteries recommended.

Smart Response Configuration

Activate/Deactivate Recovery Mode

Navigate Menu to Recovery and select ON or OFF to enable/disable Smart Response.

Time and Date Settings

Setting the Time

Navigate Menu to Clock, then SET TIME to adjust hours, minutes, and format.

Setting the Date

Navigate Menu to DATE to set month, day, and year.

Thermostat Screen Cleaning

Activate Clean Screen Mode

Lock the screen to prevent accidental changes while cleaning. Screen deactivates for 30 seconds.

Temperature Scale Selection

Choosing Fahrenheit or Celsius

Navigate Menu to TEMP SCALE to select FAHRENHEIT or CELSIUS.

Alerts and Reminders Overview

Thermostat Sensor Errors

Alerts for Humidity Sensor, Thermostat Temperature Sensor, Indoor/Outdoor Sensor errors.

System Maintenance Alerts

Alerts for Heat Pump Needs Service, Air Filter, Humidifier Pad, Dehumidifier Filter, Ventilator Filter, UV Bulb replacement.

Internal Memory and Date/Time Alerts

Alerts for Internal Memory Error and reminder to Set the Date and Time.

System Alerts and Reminders

AC Power Lost Alert

Indicates AC power loss; Z-Wave communication may turn off to preserve battery.

Battery Status Alerts

Alerts for Battery Low or Battery Critical status, requiring battery replacement.

Z-Wave Configuration Alerts

Alerts for Z-Wave Not Configured or Z-Wave Radio Error, indicating setup or module issues.

Battery Management

When Batteries Are Not Required

Batteries are optional if thermostat was wired to 24 VAC power.

Low Battery Warnings and Actions

Low battery icon, backlight disable; critically low requires immediate replacement.

Troubleshooting Common Issues

Display is Blank

Check batteries, circuit breaker, furnace switch, and door closure.

System Settings Not Changing

Verify System Setup Option 220 settings for Cool mode.

Heating/Cooling System Issues

Check setup options, temperature settings, circuit breaker, power switch, and furnace door.

Compressor Protection Engaged

Wait 5 minutes for the system to respond safely after compressor shutdown.

Heat Pump Cooling/Heating Issues

Check setup options and wiring (Aux heat runs in cooling, cool runs with call for heat).

1-Year Limited Warranty

Warranty Coverage Details

Covers defects in workmanship/materials for one year. Excludes battery, removal/reinstallation costs.

Obtaining Warranty Service

Return to place of purchase or contact Resideo Customer Care for repair or replacement.

Safety Precautions

Electrical Hazard Warning

Disconnect power before beginning installation to prevent shock or damage.

Mercury Notice

Proper disposal instructions for thermostats containing mercury.

Customer Support

Assistance Information

Visit website or call toll-free number for assistance with the product.

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