Lennox ECB38-20CB

©2017 Lennox Industries Inc.
Dallas, Texas, USA
Page 1
THIS MANUAL MUST BE LEFT WITH THE
HOMEOWNER FOR FUTURE REFERENCE
WARNING
Electric Shock Hazard.
Can cause injury or death.
Foil-faced insulation has conductive
characteristics similar to metal. Be sure there
are no electrical connections within 1/2ʺ
of the insulation. If the foil-faced insulation
comes in contact with electrical voltage, the
foil could provide a path for current to pass
through to the outer metal cabinet. While
the current produced may not be enough to
trip existing electrical safety devices (e.g.,
fuses or circuit breakers), the current can be
enough to cause an electrical shock hazard
that could cause personal injury or death.
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal
injury or loss of life. Installation and service must be
performed by a licensed professional HVAC installer or
equivalent, service agency, or the gas supplier.
INSTALLATION
INSTRUCTIONS
ELECTRIC HEAT SECTIONS
507805-01
12/2017
ECB38 Series Units
Shipping and Packing List
Package 1 of 1 contains:
1 – Assembled electric heat section
1 – Bag assembly containing the following:
Screws - 6 each
Wiring diagram - 1 each
Circuit breaker cover - 1 each
2 – Adhesive-backed foam seals
Check equipment for shipping damage; if found, immedi-
ately contact the last carrier.
WARNING
Electric shock hazard! - Disconnect all power
supplies before servicing.
Replace all parts and panels before
operating.
Failure to do so can result in death or
electrical shock.
ELECTRIC HEAT WILL NOT OPERATE
IF IT IS NOT CONFIGURED (SET UP)
THROUGH THE AIR HANDLER
CONTROL (AHC).
SEE CONFIGURATION PROCEDURE,
FIGURE 12 ON PAGE 9.
IMPORTANT INFORMATION FOR INSTALLER
H
H
CONFIGURE ELECTRIC HEAT
ECB38
®
OR iComfort
®
S30 INSTALLER
SETUP, ELECTRIC HEAT MUST BE MANUALLY CONFIGURED.

Lennox ECB38-20CB Specifications

General

Brand	Lennox
Model	ECB38-20CB
Category	Heat Pump
Language	English

Summary

INSTALLATION INSTRUCTIONS

Shipping and Packing List

Lists components included in the package for the electric heat section.

Installer Information and Safety Warnings

Key installer guidance, electric shock, and improper installation warnings.

Electric Heat Sections

General Information

Provides general guidance, local codes, and safety requirements for installation.

Heat Section Installation Procedures

Step-by-step instructions for physically installing the heat section into the air handler.

Circuit Breaker Installation

Circuit Breaker and Patch Plate Configuration

Details configuration of circuit breakers and patch plates for different unit models.

Circuit Breaker Cover and Sensor Setup

Circuit Breaker Cover Installation

Instructions for installing the circuit breaker cover to ensure an airtight seal.

Discharge Air Temperature Sensor

Explains the purpose and function of the discharge air sensor for EVENHEAT operation.

Electrical Connections and Unit Start-Up

Air Handler Control 9-Pin Connector Wiring

Describes wiring connections between the air handler and heat section via a 9-pin connector.

Unit Start-Up Procedures

Steps for starting up the unit, including blower speed selection.

Unit Configuration

Air Handler Control Checkout

Procedure to check the air handler control's unit size code and heat section detection.

Unit Size Code Configuration

Heat Mode Selection and Configuration

Heat Mode Selection

Guide to selecting between Standard and EVENHEAT modes for electric heat.

ConfiguringDetecting Electric Heat Sections

Steps to configure the AHC to detect installed electric heat sections.

EVENHEAT Operation Details

Wiring Diagram Cross-Reference