E 2009 Lennox Industries Inc.

Dallas, Texas, USA

THIS MANUAL MUST BE LEFT WITH THE HOMEOWNER FOR FUTURE REFERENCE

INSTALLATION

INSTRUCTIONS

G61MP SERIES UNITS

GAS UNITS

 

506406−01

 

08/2009

Litho U.S.A.

Supersedes 505,124M

 

Table of Contents

Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

G61MP Parts Identification . . . . . . . . . . . . . . . . . . . . . . 3

Shipping and Packing List . . . . . . . . . . . . . . . . . . . . . . 4

Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Use of Furnace as Construction Heater . . . . . . . . . . . 5

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Combustion, Dilution & Ventilation Air . . . . . . . . . . . . 6

Installation − Setting Equipment . . . . . . . . . . . . . . . . . . 8

Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Duct System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Pipe & Fittings Specifications . . . . . . . . . . . . . . . . . . . . 16

Vent Piping Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . 18

Joint Cementing Procedure . . . . . . . . . . . . . . . . . . . . . 20

Venting Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Integrated Control Board . . . . . . . . . . . . . . . . . . . . . . . 42

Unit Start−Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Gas Pressure Adjustment . . . . . . . . . . . . . . . . . . . . . . 44

High Altitude Information . . . . . . . . . . . . . . . . . . . . . . . 45

Other Unit Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . 46

Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Ignition Control Board Diagnostic Codes . . . . . . . . . . 56

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Repair Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Vent Pipe Sizing Worksheet . . . . . . . . . . . . . . . . . . . . . 63

Start−Up & Performance Check List . . . . . . . . . . . . . . 63

WARNING

FIRE OR EXPLOSION HAZARD.

Failure to follow safety warnings exact- ly could result in serious injury, death, or property damage.

Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other ap- pliance.

Installation and service must be performed by a qualified installer, service agency or the gas supplier.

WHAT TO DO IF YOU SMELL GAS:

DDo not try to light any appliance.

DDo not touch any electrical switch; do not use any phone in your building.

DLeave the building immediately.

DImmediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

DIf you cannot reach your gas supplier, call the fire department.

08/09

 

506406−01

 

 

*2P0809*

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*P506406-01*

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Lennox International Inc G61MP Series Units installation instructions Installation Instructions, Table of Contents
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G61MP Series Units, Gas Units specifications

Lennox International Inc. has established itself as a leader in the heating and cooling industry, and its G61MP Series Gas Units stand as a testament to the company's commitment to innovation and energy efficiency. These gas units are specifically designed for residential applications and are recognized for their reliability, performance, and advanced technology.

One of the main features of the G61MP Series is its variable speed motor, which offers significantly enhanced comfort over traditional single-stage gas units. This technology allows for precise temperature control and improved humidity management. By adjusting its speed according to the heating demand, the unit minimizes temperature fluctuations, leading to a more consistent indoor climate.

Another notable characteristic of the G61MP Series is its ECM blower motor, which operates quietly and efficiently. This motor not only reduces energy consumption but also enhances the overall comfort of the home by providing a steady flow of warm air without the disruptive noise often associated with traditional gas units.

The G61MP Series units are designed with a focus on energy efficiency, boasting an impressive Annual Fuel Utilization Efficiency (AFUE) rating. This rating indicates that these units convert a significant portion of the fuel they consume into usable heat, resulting in lower energy bills for homeowners. The units are equipped with a modulating gas valve that further optimizes fuel usage by adjusting the gas flow according to the heating needs of the home.

Safety is a paramount consideration in the design of the G61MP Series. These units are built with advanced safety features, including a self-diagnostic control system that continuously monitors the unit’s performance. This system alerts homeowners to any potential issues, allowing for proactive maintenance and ensuring the longevity of the equipment.

The G61MP Series is also designed for ease of installation and servicing. Its compact design allows for flexible placement in various home environments, while the user-friendly access panels simplify routine maintenance tasks.

In conclusion, Lennox International Inc.'s G61MP Series Gas Units deliver a combination of advanced technology, energy efficiency, and reliability, making them an excellent choice for homeowners looking to enhance their heating systems. With features designed to maximize comfort, minimize energy costs, and ensure safety, these units represent a significant advancement in residential heating solutions.
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