Lennox 103861-04, EIM Equipment Interface Module
Cat # : 22X18
Model/Part # : 103861-04
This product is used in several different models.
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Product Overview
Lennox EIM, Residential Communicating Control System Equipment Interface Module
The Equipment Interface Module (EIM) allows a Lennox® Communicating Thermostat to be used with most noncommunicating HVAC systems.
The EIM allows most conventional, non-communicating furnaces or air handlers (up to 3 stages heating and 2 stages cooling) to emulate a Lennox® Communicating indoor unit (with reduced communication features).
- Contains all necessary relays and controls to emulate a Lennox® Communicating indoor unit
- Module has two green LEDs
- One indicates status and aids in troubleshooting, a second LED indicates active RSBus communication
- Any system alerts/warnings are transmitted to the Lennox® Communicating Thermostat
- Serial communications bus (RSBus), with less wiring than a conventional heating/cooling system, allows system communication
- Uses 4-wire, 18-gauge standard thermostat wiring for connection to the Lennox® Communicating Thermostat
- Conventional thermostat wiring connects the EIM to the non-communicating indoor/outdoor unit equipment