Lennox iComfort Wi-Fi Setup Manual

Touch screen programmable communicating thermostat

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Setup manual (72 pages)

Installer's system setup manual (48 pages)

Homeowner's manual (20 pages)

Table Of Contents

Table of Contents

Quick Links

Units

The iComfort Wi-Fi

thermostat works with the following indoor and outdoor units:

Indoor Units

G71MPP-03 or later

SL18XC-01 or later

SLP98-01 or later

SL18XP-01 or later

SL280-03 or later

XC17-02 or later

EL296V-01 or later

XP17-02 or later

CBX40UHV-02 or later

XP17N-01 or later

CBX32MV-06 or later

XP19-06 or later

XC20-01 or later

Shipping and Packing List

1 - iComfort Wi-Fi

thermostat (firmware version 2.13)

4 - Mounting screws

4 - Wall anchors

1 - Installation quick‐start guide

1 - Installer's system setup guide

1 - Homeowner's manual

1 - Warranty card

WARNING

Improper installation, adjustment, alteration, service or

maintenance can cause property damage, personal injury or

loss of life.

Installation and service must be performed by a licensed

professional HVAC installer (or equivalent) or service

agency.

iComfort Wi-Fi

Web and Mobile

Apps

Outdoor Units

XP20-01 or later

XC21-05 or later

XP21-01 or later

XP21N-01 or later

XP25-01 or later

XC25-01 or later

INSTALLER'S SYSTEM

SETUP GUIDE

iComfort Wi-Fi

Touch Screen Programmable Communicating Thermostat

CONTROLS

507343-01

5/2015

Supersedes 10/2014

Overview — Technical Description and

Features

This 24VAC thermostat is an electronic communicating, color

display touchscreen and 7-day programmable thermostat.

This thermostat stores system parameters and settings in

non-volatile memory (i.e., retains data when electrical power

fails or is turned off).

This thermostat can also connect to online services via the

Internet through the homeowner's Wi-Fi router. After online

registration is completed, the system may then be accessed

by the homeowner from anywhere using a remote Internet

connection via computer or personal communicating device.

The thermostat also supports:

•

Wireless bands 802.11b, 802.11c and 802.11n,

•

Three languages are supported (English, Français and

Español),

•

Air conditioning or heat pump units with up to four stages

of heat / two stages of compressor operation (2 stages of

Heat Pump heating, 2 stages of auxiliary back-up heating,

2 stages of emergency heating),

•

Variable - capacity / multiple - stage heat/cool, universal

compatibility (gas/electric/heat pump/air conditioner)

•

Dual-fuel capable (iComfort

Balance Points.

•

Indoor air quality with time‐based notification of

consumables including media filters, UVC bulbs,

humidifier pads, and PureAir™ system catalyst service /

replacement,

•

iHarmony

zoning system (2 - 4 zones),

•

Lennox iComfort

Equipment Interface Module (Catalog

number

10T50)

non-communicating indoor unit,

•

Humidification measurement and control,

•

Dew point adjustment control,

•

Humiditrol

Enhanced

(EDA),

•

Equipment maintenance reminders,

•

Autochangeover mode -- Permits control of heating,

cooling, humidification, and dehumidification without user

involvement,

•

All Lennox branded iComfort

outdoor temperature sensor factory installed,

•

Enhance

defrost

communicating heat pumps using Intellifrost™ Adaptive

Defrost Control, part number 103369-04 or later.

Thermostat

heat pump only) with two

(provides

iComfort

Dehumidification

outdoor units have a

control

options

for

Litho U.S.A.

Wi-FI

Accessory

Lennox

Table of Contents

Troubleshooting

Summary of Contents for Lennox iComfort Wi-Fi

Page 1 Indoor air quality with time‐based notification of consumables including media filters, UVC bulbs, Shipping and Packing List humidifier pads, and PureAir™ system catalyst service / replacement, ® 1 - iComfort Wi-Fi thermostat (firmware version 2.13) ® • iHarmony zoning system (2 - 4 zones), 4 - Mounting screws ®...
Page 2 TABLE OF CONTENTS Overview — Technical Description and Features . . . Gas Heat Control ......Installation and Setup .
Page 3: Installation And Setup
15% (9 minutes fan run time per hour) 25% (15 minutes fan run time per hour) 35% (21 minutes fan run time per hour) 45% (27 minutes fan run time per hour). 9:39 am Aug 15, 2012 ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 3...
Page 4 NOTE: If a Dealer Number or Dealer Phone Number The dealer number is your Lennox account number) i.e A12345). Your is not entered and the next button is selected, a pop-up dealer phone number should be the main office phone number associated with your dealership.
Page 5 Default is 60 kBTU inc: 1 red settings save cancel set-to 60 kBTU back save cancel 9:39 am Aug 15, 2012 Figure 6. Add Non-Communicating Device — Outdoor Unit ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 5...
Page 6 NON-COMMUNICATING EQUIPMENT — ADDING A HUMIDIFIER To add (or remove) a humidifier: Before adding a humidifier, be sure that: 1. Press the yes button on this screen (see 1). • The humidifier is wired to the furnace or air handler 2.
Page 7 Heat Pump Outdoor Unit current value: Furnace Outdoor Unit Capacity Thermostat Humiditrol Humidifier Humiditrol Dehumidifier edit back back next Figure 8. Add Non-Communicating Device — Dehumidifier ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 7...
Page 8 Adjusting System Device Settings 1. Press any component listed under system devices to change specific communicating equipment para System Low Heating Airflow meters and edit details of devices in the system. Equipment Name current value: Heating Airflow Control Type 2. Use the arrows to highlight a setting and then press Low Heating Airflow edit edit (figure 9A).
Page 9 Zone 2 Cooling CFM To be determine by equipment capacity. Zone 3 Cooling CFM Zone 4 Cooling CFM Zone 1 Heating CFM Zone 2 Heating CFM Zone 3 Heating CFM Zone 4 Heating CFM ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 9...
Page 10 Table 3. System Devices > Air Conditioner system devices To adjust a setting, about System highlight it, then press Air Conditioner Edit resetAll Furnace Air Conditioner Thermostat edit next back Parameter Name: Default Parameter Value Setting Increment Press edit to change name (up to 35 characters may be used).
Page 11 All communicating Installer Parameters default CFM values based on DIP switch setting (non-communicating value) are calculated using the CFM conversion tables and rounded up to closest number on 25 CFM resolution. ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 11...
Page 12 Table 6. System Devices > Furnace system devices To adjust a setting, about System highlight it, then press Heat Pump Edit resetAll Furnace Furnace Thermostat edit next back Parameter Name Default Min. Max. Incr. Dependency Note or Options Press edit to change name (up to 35 characters may be used). Equipment Name Note: Pressing the resetALL button will reset all custom parameter settings back to factory default.
Page 13 Zone 3 Temp Reading Calibration 0ºF -5ºF 5ºF 1ºF installed Zone 4 Temp Reading Calibration 0ºF -5ºF 5ºF 1ºF NOTE - More zoning parameters are available under system devices > system on page 9. ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 13...
Page 14 ® Complete iComfort System — Adjusting Humidification Settings SYSTEM DEVICES SCREEN — HUMIDIFICATION CONTROL MODE SETTINGS Pre-adjustment REQUIREMENTS: 1st, the device has been installed (see page 6). System Devices To adjust a setting, highlight it, 2nd, you pressed next at the “Add or Remove...” screen then press Edit System System...
Page 15 — humidification demand exists (24V present at H) — the unit is in HEAT mode. ® Figure 11. Complete iComfort Feature Settings Screen — Humidification Setting ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 15...
Page 16 ® Complete iComfort System — Adjusting Dehumidification Settings SYSTEM DEVICES SCREEN — DEHUMIDIFICATION SETTINGS Pre-adjustment REQUIREMENTS: 1. In the “system devices” list, use the arrows (1a) to 1st, the device has been installed highlight System. Press edit (1b). 2nd, from the “Add or Remove Non-communicating ®...
Page 17 ® NOTE - Systems using iComfort and a dehumidifier - “Dehum” jumper on furnace/air handler control does not need to be ® cut when using with a iComfort Wi-Fi thermostat. • dehumidification has been enabled on installer settings, and •...
Page 18 ® Partial iComfort System — Adjusting Humidification Settings (Non-Communicating Outdoor Unit) SYSTEM DEVICES SCREEN — HUMIDIFICATION CONTROL MODE Pre-adjustment REQUIREMENTS: 1st, the required devices (outdoor unit and humidifier) has System Devices To adjust a setting, highlight it, then press Edit been installed (see page 6).
Page 19 — outdoor temperature — humidification mode has been enabled — humidification demand exists (24V present at H) — the unit is in HEAT mode. Figure 15. Humidification Settings Controls ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 19...
Page 20 ® Partial iComfort System — Adjusting Dehumidification Settings (Non-Communicating Outdoor Unit) SYSTEM DEVICES SCREEN — HUMIDITROL COMFORT ADJUSTMENT Pre-adjustment REQUIREMENTS: 1. In the “system devices” list, use the arrows (1a) to • 1st, the device has been installed highlight System. Press edit (1b). •...
Page 21 NOTE - Systems using iComfort and a dehumidifier - “Dehum” jumper on furnace/air handler control does not need to ® be cut when using with a iComfort Wi-Fi thermostat. • Wi-Fi is operational or outdoor sensor is installed and set up •...
Page 22 ® Zoning Control Settings (iHarmony Zoning System) NOTE - Skip if no zoning control device is installed. Cooling demand is terminated when: HEAT/COOL CHANGEOVER 1. All zone demands for cooling are terminated. The following is an example of how the system operates 2.
Page 23 Zone 4 Zone 3 Zone 2 Zone 1 start start start start stop all next save cancel 9:39 am Aug 15, 2012 Figure 21. Editing Zone CFM ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 23...
Page 24 Using the Tests / Diagnostics Features TO SELECT TESTS TO RUN test. The technician must verify that the test procedure is producing the desired result at the equipment. Use the following procedure to run test for various heating and cooling stage operations. After pressing next after the final test, the Testing finished screen will appear (figure 24).
Page 25 There are two methods to setup your Wi-Fi connection. Select 3. If connection is successful the screen will return to the either NETWORK SETTINGS or connection status. available networks screens. Press X to return to the ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 25...
Page 26 Wi-FI performance has improved. WI-FI SETTINGS Router Signal Strength (RSSI) ® The ideal signal strength range for the iComfort Wi-Fi WI-FI thermostat xxxx connection thermostat is -1 to -69 RSSI. The signal strength can be...
Page 27 Wi-Fi thermostat wireless network for new update registration Register with iComfort Wi-Fi thermostat to enable remote access and NOTE - online weather information If any downloads are available for the thermostat they will start downloading enter your email right away. When new firmware is being downloaded or when Gelaskins are...
Page 28 Skins By adding a skin and matching skin image screen-saver to your iComfort Wi-Fi, you can coordinate it with the decor in any room. Skins are available in many colors, patterns and designs. Skins can be ordered from nuvango.com Go to Shop >...
Page 29 If any component of the HVAC system has been changed, e.g. replacing an outdoor sensor, reconfiguring the system will be required. 1. To begin reconfiguring a system (after you have accessed the program from the Lennox logo [previous page]), press the setup button (1, figure 36A). The “Start system configuration” screen (fig. 36B) will appear.
Page 30: Stage Delay And Differential Settings
ADJUSTING EQUIPMENT PARAMETERS AFTER INITIAL INSTALLER SETUP 1. From the Home Screen, press and setup tests equipment hold Lennox (see figure 34) until the warning screen appears. Press yes to system devices To adjust a setting, System continue about highlight it, then press...
Page 31 Dead band. 5. When a new program schedule period starts, then the New SSR set point will equal the new program schedule 16. SSR will not overshoot the Target Set point. ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 31...
Page 32 Defrost Operations This section is applicable only to heat pumps that are using outdoor control part number 103369-03 or higher. Configure the device as follows: 1. In the system devices list, use the arrows (1a) to highlight System Devices To adjust a setting, highlight it, then press Edit Heat Pump.
Page 33 Any of the exampled weather conditions are forecast, • Freezing rain Note: This setting when enabled is always used regardless of day, night or thermostat termination temperature setting in a total communicating system. ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 33...
Page 34 Automatic Max Defrost Figure 40. Automatic Max Defrost Selection and Sequence of Operations Page 34 507343-01...
Page 35 Figure 41. Demand Defrost - Automatic Max Defrost ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 35...
Page 36 Heat Pump, Dual-Fuel, Dual-Fuel Tempering and Balance Points IMPORTANT - The Balance Points feature requires that a DUAL-FUEL APPLICATIONS sensed outdoor temperature is provided to the thermostat. This The following information is applicable to communicating can be either a connection to Wi-Fi (for local temperature systems only.
Page 37 Heat pump demand NOTE 3 - If emergency heat is selected, Furnace is used. T'stat lockout heat demand Shut down FURN Stg1...Stg 2 Figure 42. Dual Fuel Operation with Balance Points ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 37...
Page 38 Modulating Outdoor Units with Duel-Fuel TRANSITION FROM HEAT PUMP TO GAS 2. Steady-State Mode: • Steady-State: If heating demand rises above 95% Btu • With Modulating Furnace: In steady state when the temperature is less than 0.5ºF from set point, furnace capacity for 10 minutes or greater, and the temperature is has been running for more than 15 minutes and the greater than 1.5ºF less then the set point then the system...
Page 39: Gas Heat Control Mode
The thermostat monitors room heat demand capacity furnace firing rate to 100% until all thermo added. stat demands are satisfied. temperature, previous heat cycle times, and target set point to ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 39...
Page 40 When an SLP98 Furnace What is Load-tracking Variable Capacity? ® • The second stage timers have no effect when running the is connected to an iComfort Wi-Fi thermostat, the thermostat takes complete charge of the variable capacity staging of the PIA. Page 40...
Page 41 41). From the user's home screen, press and hold the “Lennox” logo in the bottom right corner of the thermostat to access the installer program. Press yes when asked if you want to...
Page 42 Critical alerts are displayed on the Home screen, in the Home Table 10. Alert Codes and Troubleshooting owner alert button, and in the Installer alert button. Minor and moderate alerts are found only in the Installer alert button. APPLICABLE COMPONENT OR SYSTEM OPERA Alert PRIORITY HOW TO CLEAR...
Page 43 Critical Thermostat • with thermostat for more than Fault clears after ponent for more than three min three minutes. utes. communication is • restored. Check connections. • Ohm wires. ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 43...
Page 44 Critical alerts are displayed on the Home screen, in the Home Table 10. Alert Codes and Troubleshooting owner alert button, and in the Installer alert button. Minor and moderate alerts are found only in the Installer alert button. APPLICABLE COMPONENT OR SYSTEM OPERA Alert PRIORITY HOW TO CLEAR...
Page 45 / when the outdoor temperature is above the high balance point. • The gas furnace is locked out and all the heat is provided by the heat pump. ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 45...
Page 46 Critical alerts are displayed on the Home screen, in the Home Table 10. Alert Codes and Troubleshooting owner alert button, and in the Installer alert button. Minor and moderate alerts are found only in the Installer alert button. APPLICABLE COMPONENT OR SYSTEM OPERA Alert PRIORITY HOW TO CLEAR...
Page 47 This alert code is usually caused (device) responds to system. face or IHarmony by a delay in the outdoor unit re any inquiry. damper control sponding to the thermostat. module • Check all wiring connections. ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 47...
Page 48 Critical alerts are displayed on the Home screen, in the Home Table 10. Alert Codes and Troubleshooting owner alert button, and in the Installer alert button. Minor and moderate alerts are found only in the Installer alert button. APPLICABLE COMPONENT OR SYSTEM OPERA Alert PRIORITY HOW TO CLEAR...
Page 49 Furnace nace gas valve. wiring. rected. Automatically clears The furnace gas valve relay Critical Check wiring on control and gas valve. after the issue is cor Furnace contact is closed. rected. ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 49...
Page 50 Critical alerts are displayed on the Home screen, in the Home Table 10. Alert Codes and Troubleshooting owner alert button, and in the Installer alert button. Minor and moderate alerts are found only in the Installer alert button. APPLICABLE COMPONENT OR SYSTEM OPERA Alert PRIORITY HOW TO CLEAR...
Page 51 Furnace • Measure operating pressure mode. successfully. (inches w. c.). • Inspect vent and combustion air inducer for correct operation and restriction. ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 51...
Page 52 Critical alerts are displayed on the Home screen, in the Home Table 10. Alert Codes and Troubleshooting owner alert button, and in the Installer alert button. Minor and moderate alerts are found only in the Installer alert button. APPLICABLE COMPONENT OR SYSTEM OPERA Alert PRIORITY HOW TO CLEAR...
Page 53 • Automatically clears Possible Y1 relay failure. 300 seconds after Y1 Critical Relay Y1 Failure Furnace • All system operations will stop. input sensed OFF. ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 53...
Page 54 Critical alerts are displayed on the Home screen, in the Home Table 10. Alert Codes and Troubleshooting owner alert button, and in the Installer alert button. Minor and moderate alerts are found only in the Installer alert button. APPLICABLE COMPONENT OR SYSTEM OPERA Alert PRIORITY HOW TO CLEAR...
Page 55 Equipment inter Relay W1 failure (IFC and AHC W1 relay is energized but input is not Moderate when W1 relay input is modes only) sensed after three seconds. face module sensed. ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 55...
Page 56 Critical alerts are displayed on the Home screen, in the Home Table 10. Alert Codes and Troubleshooting owner alert button, and in the Installer alert button. Minor and moderate alerts are found only in the Installer alert button. APPLICABLE COMPONENT OR SYSTEM OPERA Alert PRIORITY HOW TO CLEAR...
Page 57 • Reset by putting outdoor unit con trol in test mode or resetting low voltage power. ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 57...
Page 58 Critical alerts are displayed on the Home screen, in the Home Table 10. Alert Codes and Troubleshooting owner alert button, and in the Installer alert button. Minor and moderate alerts are found only in the Installer alert button. APPLICABLE COMPONENT OR SYSTEM OPERA Alert PRIORITY HOW TO CLEAR...
Page 59 90 sec onds, the control will count one fault. • After five faults, the control will lock out – critical condition. • Check for proper sensor reading and attachment to line. ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 59...
Page 60 Critical alerts are displayed on the Home screen, in the Home Table 10. Alert Codes and Troubleshooting owner alert button, and in the Installer alert button. Minor and moderate alerts are found only in the Installer alert button. APPLICABLE COMPONENT OR SYSTEM OPERA Alert PRIORITY HOW TO CLEAR...
Page 61 Outdoor unit power to outdoor unit Anti-short cycle is initiated. Critical main input current condition and restart. • If condition occurs 10 times within an hour, system will lockout – critical condition. ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 61...
Page 62 Critical alerts are displayed on the Home screen, in the Home Table 10. Alert Codes and Troubleshooting owner alert button, and in the Installer alert button. Minor and moderate alerts are found only in the Installer alert button. APPLICABLE COMPONENT OR SYSTEM OPERA Alert PRIORITY HOW TO CLEAR...
Page 63 Critical door unit and restart. • Outdoor control will cycle power to the inverter three times and then outdoor unit is locked out – critical condition. ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 63...
Page 64 Critical alerts are displayed on the Home screen, in the Home Table 10. Alert Codes and Troubleshooting owner alert button, and in the Installer alert button. Minor and moderate alerts are found only in the Installer alert button. APPLICABLE COMPONENT OR SYSTEM OPERA Alert PRIORITY HOW TO CLEAR...
Page 65 As a Critical Outdoor unit power to outdoor unit opens five times within one hour. result, the outdoor unit is locked and restart. • Outdoor unit will stop. ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 65...
Page 66 Critical alerts are displayed on the Home screen, in the Home Table 10. Alert Codes and Troubleshooting owner alert button, and in the Installer alert button. Minor and moderate alerts are found only in the Installer alert button. APPLICABLE COMPONENT OR SYSTEM OPERA Alert PRIORITY HOW TO CLEAR...
Page 67 Recalibrate thermostat to clear. when the system de tects that the issue no The thermostat is reading indoor • Replace thermostat, if needed. longer exists. Moderate humidity levels below the pre- Thermostat programmed limit. ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 67...
Page 68 HOMEOWNER SERVICE ALERT CODES Number Value Number Value Number Value Number Value Number Value 3000 Filter 1 3002 Humidifier 3004 Maintenance 4000 User Wi-Fi state change, 4002 Image file download disable failed 3001 Filter 2 3003 UV Light 3005 PureAir Mainten 4001 Firmware download failed ance...
Page 69 Replace the iComfort® thermostat with a conventional thermostat provide me a choice to add a have the ability to control a non- that has a dual fuel control mode (e.g. Lennox ComfortSenset non-communicating heat pump to communicating heat pump on a 7000).
Page 70 ® iComfort Wi-Fi not communic No weather being displayed. Make sure Wi-Fi is enabled. ating with router. Unable to complete Wi-Fi router / ® Refer to 507037-01 Wi-Fi Troubleshooting checklist for iComfort Wi-Fi thermostat. Internet connection Page 70 507343-01...
Page 71: Wiring Diagrams
2-stage Outdoor Units Maximum total length of all connections on the RSBus is limited to 1500ft. Wire gauge of RSBus wire is 18. ® Figure 13. iComfort Communicating Indoor/Non-Communicating Outdoor System Wiring ® iComfort Wi-Fi 7-Day Programmable Communicating Thermostat Page 71...
Page 72 INSTRUCTION FOR CONNECTIONS option. TO DAMPERS. ® ® Figure 14. iComfort Wi-Fi , iHarmony Damper Control Module, and Communicating Indoor Unit DAS NOTE: The discharge air sensor is intended to be OAS NOTE: The outdoor temperature sensor wiring distance mounted downstream of the heat exchanger and air between the IFC or AHC should not exceed 200 feet when conditioning coil.
Page 73 S30 CONTROL SYSTEM FOR USE WITH ANY ICOMFORT ® NOTE: iComfort Wi-Fi SENSES HUMIDITY & CONTROLS 24V “H” OUTPUT (& 120V “H” OUTPUT) TO CYCLE HU MIDIFIER BASED ON DEMAND. NO OTHER CONTROL OR HUMIDISTAT REQUIRED. SLP98 & G71MPP FURNACE...
Page 74: Thermostat Wire Termination In Communicating System
“C” terminals as “Field Test Mode”. shown in the diagram above. ® • At this point, the iComfort Wi-Fi will now detect the heat strip information stored in the air handler control. This is not an issue in non-communicating systems. FUSE...
Page 75 Wiring diagrams. “please view and save all red settings”. Use the arrows to ® • 4-conductor thermostat wire from the iComfort Wi-Fi select the red settings and press edit. Either make thermostat to the gas furnace (R, i+, i-, C) changes or not, but press save either way.
Page 76 Wiring diagrams. will go away after pressing save. Press the back button ® • 4-conductor thermostat wire from the iComfort Wi-Fi to return to the adjust screen. thermostat to the gas furnace (R, i+, i-, C) 7. Use the arrows to select Furnace from system devices •...
Page 77 Wiring diagrams. ® changes or not, but press save either way. The red • 4-conductor thermostat wire from the iComfort Wi-Fi settings will go away after pressing save. When all CFM thermostat to the air handler (R, i+, i-, C) settings are complete, press the back button.
Page 78 8. Use the arrows to select air handler from system devices ® • 4-conductor thermostat wire from the iComfort Wi-Fi list and press edit. From this air handler screen you will thermostat to the air handler (R, i+, i-, C) have access to the various airflow settings.
Page 79 7. Use the arrows to select Furnace from system devices ® list; press edit. From this Furnace screen you will have • 4-conductor thermostat wire from the iComfort Wi-Fi thermostat to the gas furnace (R, i+, i-, C) access to the various airflow settings. Set the system air •...
Page 80 From this air handler screen you will have ® access to the various airflow settings. Set the system air • 4-conductor thermostat wire from the iComfort Wi-Fi volumes according the needs of the home. When you thermostat to the air handler (R, i+, i-, C) ®...
Page 81 Use the down arrow to select ® Enabled and press save. High and Low Balance Points • 4-conductor thermostat wire from the iComfort Wi-Fi thermostat to the air handler (R, i+, i-, C) will appear in red.
Page 82 7. Use the arrows to select Furnace from system devices ® list; press edit. From this Furnace screen you will have • 4-conductor thermostat wire from the iComfort Wi-Fi access to the various airflow settings. Set the system air thermostat to the equipment interface module (R, i+, i-, C) volumes according the needs of the home.
Page 83 G71MPP OR SLP98 FURNACE SETTING ADJUSTMENT ® If your iComfort Wi-Fi thermostat is being used with either a G71MPP or SLP98 furnace and is set to variable-capacity mode ® of operation (the iComfort default with these units), the thermostat's settings for stage timers are ignored (even if shown enabled in the thermostat).

Lennox iComfort Wi-Fi Setup Manual

Quick Links

Units

Shipping and Packing List

Troubleshooting

Related Manuals for Lennox iComfort Wi-Fi

Summary of Contents for Lennox iComfort Wi-Fi

Page 3: Installation And Setup

Page 30: Stage Delay And Differential Settings

Page 39: Gas Heat Control Mode

Page 71: Wiring Diagrams

Page 74: Thermostat Wire Termination In Communicating System

Table of Contents