Lennox 10T50 - Application and Requirements; Indoor Transformer Requirements; Equipment

2
Shipping and Packing List .................................................................2
Application and Requirements ..........................................................2
Indoor Transformer Requirements ................................................... 2
Equipment ....................................................................................... 2
Installation ...........................................................................................5
Conguration Setup ...........................................................................5
EIM, 24VAC Furnace and Lennox Communicating Heat Pumps .... 5
EIM, Lennox Communicating Furnace and 24VAC Heat Pump ...... 5
Unit Type Jumpers ........................................................................... 5
Heat Stage Jumper Positions .......................................................... 6
Air Temperature Sensor Connections .............................................. 6
Lennox Communicating Terminal Connections ............................... 6
Dual-Fuel Terminal Connections ..................................................... 7
Conventional Terminal Connections ................................................ 7
LED Indicators ................................................................................. 7
Soft Disable ..................................................................................... 8
iComfort Wi-Fi Commissioning (Conventional Outdoor Unit) .......... 8
iComfort S30 Commissioning (Conventional Outdoor Unit) ............ 9
Operating Environment Specications ............................................9
Unit Dimensions ...............................................................................10
Duel-Fuel Operations .......................................................................10
Field Wiring ....................................................................................... 11
Alert Codes and Troubleshooting ...................................................17
TABLE OF CONTENTS
Shipping and Packing List
Quantity Description
1 Equipment Interface Module.
1 Installation and setup guide
1 Warranty certicate
WARNING
Improper installation, adjustment, alteration, ser vice or maintenance can
cause property damage, personal injury or loss of life.
Installation and service must be performed by a li censed professional
HVAC installer (or equivalent) or a service agency.
Application and Requirements
Indoor Transformer Requirements
The following lists the required indoor unit transformer rating (VA) for
specic congurations.
Table 1. System VA Loading Chart
Conguration
Minimum Transformer Rating
(VA)
2-Stage HP, 3-Stage Electric heat 70
2-Stage HP, 2-Stage Furnace (with tempering) 70
2-Stage HP, 2-Stage Furnace (without tempering) 50
2-Stage AC, 2-Stage Furnace 40
Equipment
The Equipment Interface Module (EIM) is used with an Lennox
communicating thermostat (iComfort Wi-FI
®
or iComfort
®
S30) using the R,
i+, i-, and C terminals. The EIM is the interface between non-communicating
HVAC equipment and Lennox communicating HVAC equipment. The
control supports the following equipment applications:
NOTE: EIM will support single-stage outdoor units with single-stage or
variable-stage indoor furnaces.