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Lennox iHarmony 10C16 Installation Instructions Manual

Zoning system
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2018 Lennox Industries Inc.
©
Dallas, Texas USA
INSTALLATION INSTRUCTIONS FOR IHARMONY ZONING SYSTEM (10C16)
Shipping and Packing List ........................................... 1
General .......................................................................... 1
Required Items Sold Separately.................................. 2
Recommended Items Sold Separately ....................... 2
Zoning Components ..................................................... 2
Transformer Phasing ............................................................. 2
Dampers ............................................................................... 3
Discharge Air Temperature Sensor - DATS .......................... 3
DATS Temperature / Resistance Chart ................................. 4
Pressure Switch .................................................................... 4
Staged Heat Pump Units ...................................................... 4
Freezestat (Optional) ............................................................ 5
Setup and Configuration .............................................. 5
Connections .......................................................................... 5
Control Settings ............................................................ 8
Zoning Control Parameters ................................................... 8
Zoning System Parameters .................................................. 8
To Edit and Test Airflow Per Zone ......................................... 9
Recording Airflow Information ............................................... 9
Control Settings .......................................................... 10
Zoning Control Parameters ................................................. 10
Zoning System Parameters ................................................ 10
Zoning Sequence of Operations ............................... 11
Heating / Cooling Changeover .............................................11
Damper Operation ...............................................................11
Dual-fuel Operation ............................................................. 12
Humidity Control ........................................................ 12
Soft Disable ................................................................. 12
iComfort Wi-Fi ..................................................................... 12
iComfort S30 Thermostat .................................................... 12
Speed Blower Motors ................................................. 13
Zoning Alert Codes .................................................... 14
CONTROLS
KITS AND ACCESSORIES
507132-03
6/2018
Supersedes 4/2018
iHarmony
THIS MANUAL MUST BE LEFT WITH THE OWNER
FOR FUTURE REFERENCE
WARNING
Installation and service must be performed by a li censed
professional HVAC installer (or equivalent) or a service
agency.
Shipping and Packing List
Kit (10C16) consists of the following:
1 - Damper control module assembly
1 - Discharge air temperature sensor (88K3801)
4 - Screws (#6-20 x ⅜, Phillips pan-head type 25)
1 - Freeze-stat jumper (pre-installed on damper control)
1 - Warranty sheet

General

The damper control module is compatible with the
following Lennox equipment:
• iComfort Wi-Fi
thermostat (10F81) or (88W58) with
®
software version 2.13 or higher
• iComfort S30 Ultra Smart Thermostat (12U67)
• Lennox communicating variable speed or variable
capacity (modulating) indoor and two-stage or variable
capacity (modulating) outdoor units.
• Lennox communicating variable speed indoor unit and
communicating or non-communicating (conventional)
single-stage outdoor unit (two zones maximum
supported).
• Lennox communicating variable speed indoor unit and
communicating or non-communicating (conventional)
two-stage outdoor unit (four zones maximum supported).
Zoning System
®

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Summary of Contents for Lennox iHarmony 10C16

  • Page 1: Table Of Contents

    1 - Freeze-stat jumper (pre-installed on damper control) Damper Control Module Jumper Settings, LEDs and 1 - Warranty sheet Connections ................5 Lennox Communicating Indoor Control Link Settings ... 6 General iComfort Wi-Fi Thermostat - Installer Zoning Control Settings ............8 The damper control module is compatible with the Zoning Control Parameters ...........

  • Page 2: Required Items Sold Separately

    Required Items Sold Separately Recommended Items Sold Separately The following items are also required for the zoning Lennox recommends for furnace applications the use of air system to operate: baffles to help in mixing the supply air for better Discharge Air Temperature Sensor accuracy.

  • Page 3: Dampers

    There is no notification by the thermostat for this issue. The connections would be different for other dampers. NOTE: Use Lennox Part catalog number 56L68 for zone relays 1 through 4. (Pulse Control Relay, SPDT, 1 N.O. and 1 N.C., 24VAC) Figure 3.

  • Page 4: Dats Temperature / Resistance Chart

    • If the unit is already running in first-stage when the pressure switch opens, the unit will shut off. Pressure Switch • If the switch closes within 60 seconds, then the Lennox (Required for heat pump applications.) communicating series thermostat may send a demand NOTE: Outdoor unit (heat pump) will not operate if for second-stage heat pump if needed.

  • Page 5: Freezestat (Optional)

    Figure 6. Typical Freezestat Installation - Indoor always control zone 1. Coil 5. Connect wiring from the Lennox communicating indoor unit to damper control module RSBus terminals The table below lists available freezestats for use with the marked INDOOR, R, I+, I - and C (see “Figure 7.

  • Page 6: Lennox Communicating Indoor Control Link Settings

    NOTE: If jumper is missing and no freezestat is installed the outdoor unit will not 24VAC operate. SENSE A HFC-410A high pressure switch (catalog number 27W13) is required for applications with a Lennox PRESSURE S/W heat pump. This switch acts as a guard in case of high head pressures during first- and second-stage 24VAC heating.
  • Page 7 3. DO NOT cut R to DS or W914 when using iHarmony control. R-DS Dehum or Harmony Lennox Communicating Furnace: NOTE: Interlock switch alarm 370 is activated when cutting W914 link on a two-stage communicating Lennox IFC. W915 2 Stage Compr W951 Heat Pump W914 Dehum or Hormony Figure 7.

  • Page 8: Icomfort Wi-Fi Thermostat - Installer Zoning Control Settings

    4. Press save (F). Change other red settings (if present) iComfort Wi-Fi Thermostat - Installer using a similar process. Zoning Control Settings After completing the settings press the back button to continue. On the “system devices” screen, continue by Zoning Control Parameters pressing the next button.

  • Page 9: To Edit And Test Airflow Per Zone

    Edit and Test Airflow per Zone select one Blower Circulation Airflow Maximum airflow Maximum Airflow 1250 CFM available for Cooling Airflow selected mode at Assigned Airflow 1250 CFM Sum of airflow left of screen. selected Heating Airflow below. All airflows must be selected and verified Zone 1 Zone 2 Zone 3...

  • Page 10: Icomfort S30 Thermostat - Installer Zoning Control Settings

    Transition back to Heat 8. A warning message will appear indicating “intended Lockout Pump normal operation when termination setting for use by qualified Lennox equipment installers only“. Time times out. Press proceed to continue. Range is 60 to 240 minutes. Default is 120 min- utes.

  • Page 11: Zoning Sequence Of Operations

    Table 11. Smart Hub Parameters Zoning Sequence of Operations Parameter Description When power is first applied, the green Status LED will Minimum and maximum CFM will be dependent flash, indicating that the damper control is functioning on system component configurations. These pa- normally.

  • Page 12: Dual-Fuel Operation

    2. Cycle power to the control that is displaying the soft Dual-fuel Operation disable code. NOTE: Only Lennox communicating heat pump outdoor iComfort Wi-Fi units may be used with a dual-fuel system. When both a gas furnace and a heat pump are present 1.

  • Page 13: Minimum Cfm For Zoning System With Variable Speed Blower Motors

    Minimum CFM for Zoning System with Variable Speed Blower Motors The following table list minimum indoor CFMs for zoning system the employ indoor units with variable speed blower motors. Table 12. Minimum CFMs Unit Model Number CFM (minimum) **G71MPP-36B-070 **G71MPP-36C-090 **G71MPP-60C-090 **G71MPP-60C-110 **G71MPP-60D-135...

  • Page 14: Zoning Alert Codes

    Zoning Alert Codes Table 13. Alert Codes and Troubleshooting Initial notification of critical alerts will pop up on the home screen and will be listed under notification menu. Minor and moderate alerts are found only under the notification menu. Actual Alert Priority How to clear...
  • Page 15 Table 13. Alert Codes and Troubleshooting Initial notification of critical alerts will pop up on the home screen and will be listed under notification menu. Minor and moderate alerts are found only under the notification menu. Actual Alert Priority How to clear Displayed Alert Component or System Operational State and Troubleshooting Tip Code...

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