Installation And Setup - Lennox iComfort Wi-Fi Installer's System Setup Manual

This thermostat supports:
• Wireless bands 802.11b, 802.11g and 802.11n
• Three languages (English, French, Spanish)
• 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 and 2 stages of emergency
heating)
• Variable-capacity / multiple-stage heat / cool and universal
compatibility (gas/electric/heat pump/air conditioner).
• Dual-fuel capable (iComfort®-enabled HP only) with two balance
points.
• Indoor air quality with time‐based notification of consumables
including media filters, UVC bulbs, humidifier pads and PureAir™
system catalyst service / replacement,
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• iHarmony Zoning System (2 - 4 zones)
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• Lennox iComfort Equipment Interface Module (Catalog number
10T50) (provides iComfort Wi-FI
• Humidification measurement and control.
• Dew point adjustment control
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• Humiditrol Enhanced Dehumidification Accessory (EDA)
• Multiple-stage HVAC systems
• Equipment maintenance reminders
• Autochangeover mode -- Permits control of heating, cooling,
humidification, and dehumidification without user involvement
• All Lennox branded communicating outdoor units contain a built-in
outdoor temperature sensor.

Installation and Setup

During initial thermostat start-up the following screen will appear (see figure
1). This indicates that the thermostat is active and booting up.
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to non-communicating indoor unit,
Figure 1. Boot-Up Screen
COMMUNICATION ERROR SCREEN
During initial thermostat start-up if the following screen appears (see figure
2), this will indicate that the thermostat has been incorrectly wired or has
shorted wires. Turn power off to the system and verify that all wiring is
correct.
Figure 2. Communication Error Screen
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3 iComfort Wi‐Fi 7-Day Programmable Communicating Thermostat
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