Lennox Harmony III Homeowner's Manual
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Lennox Harmony III Homeowner's Manual

Zone control system
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E2008 Lennox Industries Inc.
Dallas, Texas, USA
07/08
*2P0708*
Downloaded from
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HOMEOWNER'S
MANUAL
Harmony IIIt Zone Control System
CONTROLS
505,024M
07/08
Supersedes 05/06
IMPORTANT: Read this instruction manual
completely! Retain for future reference.
Contents
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Litho U.S.A.
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  • Page 1: Table Of Contents

    HOMEOWNER’S MANUAL E2008 Lennox Industries Inc. Dallas, Texas, USA Harmony IIIt Zone Control System CONTROLS 505,024M Litho U.S.A. 07/08 Supersedes 05/06 IMPORTANT: Read this instruction manual completely! Retain for future reference. Contents Page What Is the Harmony IIIt Zone Control System? .

  • Page 2: What Is The Harmony Iiit Zone Control System

    How do I set the control center switches? The Harmony IIIt control center has only two ON/OFF switches Lennox Harmony IIIt Zone Control System manages the dis- (see illustration). For the most part, the system relies on thermo- tribution of conditioned air to as many as four specific areas or stats to provide control of the desired comfort level for each zone.
  • Page 3 3. Emergency Heat Switch. When the Harmony IIIt control NOTE − Usually, Emergency Heat is more expensive to oper- center is used with a heat pump and the Emergency Heat ate than Heat Pump heating. If so equipped, use Emergency Heat only when necessary.

  • Page 4: How Do I Use The Thermostat Controls

    FAN AUTO or FAN ON tells the control center how the blower Notice to Homeowner should operate. Select one or the other. FAN AUTO allows the blower to turn on and turn off with the heating or cooling The heating and air conditioning equipment in- needs.

  • Page 5: How Are Zones Determined

    Therefore, rooms with a northern exposure and rooms with a southern exposure should not be zoned together. In the Your Lennox dealer has sectioned the rooms of your home or winter, northern rooms may be too cool while southern rooms building into zones using the following considerations: may be too hot.

  • Page 6: How Do I Use The Optional Humiditrol ® Accessory

    ® DEHUM MODE SETTING How do I use the optional Humiditrol dehumidifica- DEF(OFF) OFF tion accessory? Press the HOME tab to return to the HOME screen. NOTE − If your zoned system is equipped with an optional Humidi- - Enable Humiditrol and adjust dehumidification setpoint trol dehumidification accessory, see instructions provided with the Humiditrol Zoning Accessory manual (505,337M) for setting (INSTALLER SETTINGS)

  • Page 7: Thermostat Replacement And Maintenance

    Call HUM SETPOINT DEFAULT (45%) your Lennox dealer to help you identify and install an appropriate thermostat with a C" terminal. - HUMIDITROL ADJUST is also available in the user settings.

  • Page 8: Homeowner's Zone Information Record

    Table 1. Homeowner’s Zone Information Record Zone number Record which rooms are zoned together and controlled by thermostat # Lennox Dealer: Contact: Telephone Number: Installation Date: Page 8 Downloaded from ManualsNet.com search engine...

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