Lennox International Inc Gas Units, G61MP Series Units Setting an Upflow Unit, Leveling Bolt, Nc‡

Page 12

Setting an Upflow Unit

When the side return air inlets are used in an upflow ap- plication, it may be necessary to install leveling bolts on the bottom of the furnace. Use field−supplied corrosion−resist- ant 5/16 inch machine bolts (4) and nuts (8). See figure 12. NOTE − The maximum length of the bolt is 1−1/2 inches.

1 − Lie the furnace on its back and drill a 5/16 inch diame- ter hole in each corner of the furnace’s bottom. See fig- ure 12 for the correct location of the holes. Drill through the bottom panel and the bottom flange of the cabinet.

2 − Install one bolt and two nuts into each hole. Screw the first nut onto a bolt and then insert the bolt into a hole. A flat washer may be added between the nut and the bot- tom of the unit.

3 − Screw another nut onto the bolt on the inside of the fur- nace base. A flat washer may be added between the nut and the bottom of the unit.

4 − Adjust the outside nut to the appropriate height and tighten the inside nut to secure the arrangement.

NOTE − The unit may be tilted back−to−front a maximum of 1". This will ensure proper draining of the heat exchanger.

Leveling Bolt Installation

 

3/8

Inches (mm)

 

 

 

(10)

 

Furnace Front

 

 

3/8

 

1−3/4

(10)

 

(44)

1−3/4

 

Leveling Bolt

(44)

 

 

Furnace

Locations

 

 

 

Bottom

 

Leveling Bolt

 

3/8

 

(10)

Locations

 

 

 

3/8

 

1−3/4

(10)

 

(44)

 

1−3/4 (44)

 

FIGURE 12

Downflow Applications

The unit may be installed three ways in downflow applica- tions: on non−combustible flooring, on combustible flooring using an additive base, or on a reverse−flow cooling cabi- net. Do not drag the unit across the floor in the down- flow position. Flange damage will result.

After unit has been properly set in place, position provided logo over existing logo and affix sticker on front panel.

Refer to figure 13 for clearances in downflow applica- tions.

Downflow Application Installation Clearances

 

Top

Left Side

Right Side

 

Bottom

Top

0

*Front

0

Back

0

Sides

0†

Vent

0

Floor

NC‡

*Front clearance in alcove installation must be 24 in. (610 mm). Maintain a minimum of 24 in. (610 mm) for front service access. †Allow proper clearances to accommodate condensate trap and vent pipe installation.

‡The furnace may be installed on a combustible wood floor if an op- tional additive base is installed between the furnace and the com- bustible floor.

FIGURE 13

Installation on Non−Combustible Flooring

1 − Cut floor opening keeping in mind clearances listed on unit rating plate. Also keep in mind gas supply connec- tions, electrical supply, flue and air intake connections and sufficient installation and servicing clearances. See table 1 for correct floor opening size.

2 − Flange warm air plenum and lower the plenum into the opening.

3 − Set the unit over the plenum and seal the plenum to the unit.

4 − Ensure that the seal is adequate.

TABLE 1

NON−COMBUSTIBLE FLOOR OPENING SIZE

 

Front to Rear

Side to Side

Model No.

in.

mm

in.

mm

 

B Cabinet (17.5")

19 − 3/4

502

16 − 5/8

422

C Cabinet (21")

19 − 3/4

502

20−1/8

511

D Cabinet (24.5")

19 − 3/4

502

23 − 5/8

600

NOTE − Floor opening dimensions listed are 1/4 inch (6 mm) larger than the unit opening. See dimension drawing on page 2.

Page 12

Page 11 Page 13
Image 12
Page 11 Page 13
Contents Installation Instructions Table of ContentsG61MP Unit Dimensions − inches mm TOP ViewFront View Side View Glass Assembly G61MP Parts ArrangementTOP CAP Sight BlowerSafety Information Direct Vent Installation NON−DIRECT VentInstallation G61MP Gas FurnaceUse of Furnace as Construction Heater General Combustion, Dilution & Ventilation AirEquipment in Confined Space − ALL AIR from Inside Installation − Setting Equipment Equipment operationEquipment in Confined Space − ALL AIR from Outside Setting Equipment Front ViewSide View END ViewUpflow Applications Refer to Engineering Handbook for additional informationFront View Furnace FrontSetting an Upflow Unit Leveling BoltFurnace Locations Bottom Leveling Bolt NON−COMBUSTIBLE Floor Opening SizeAdditive Base Floor Opening Size Side ViewBlower Access Panel Typical Horizontal Ceiling ApplicationINTAKE/EXHAUST Connection Support Frame Drain PAN Exhaust Pipe GAS Connector MIN Raised Platform Condensate Line Service PlatformIntake Pipe Pipe & Fittings Specifications Piping and Fittings SpecificationsFilters Duct SystemOutdoor Termination Kits and Corresponding Equivalencies Model DIAVent Piping Guidelines Minimum Vent Pipe Lengths Maximum Vent Pipe LengthsJoint Cementing Procedure Plastic strapping or a large wire tie Venting PracticesMAX Plug TrapTypical Exhaust Pipe Connections Direct Vent applications where combustion air is taken From indoors and flue gases are discharged outdoorsTransition Sweep ELL Intake Debris Screen Page Inside Corner Detail Inches 305mm or 12 in mmUS Installations1 Canadian Installations2 Exhaust Pipe Termination Size Reduction G61MPDirect Vent Roof Termination KIT TOP View Wall Ring KIT with Straight IntakeFront View Using Existing Chimney ANGLE−CUT in Direction G61MP Direct Vent ApplicationG61MP NON−DIRECT Vent Application Using Existing Chimney Condensate PipingSide View NON−DIRECT Vent Wall Ring Termination Condensate Assembly Coupling CLEAN−OUT Access−RINGS CAP HI/LO Screws Vent Nipple TEEGas Piping Furnace Isolate GAS ValveHorizontal Applications Possible Gas Piping Configerations GAS Pipe Capacity − FT3/HR kL/HRPrecautions and Procedures Interior MAKE−UP BOX InstallationElectrical Electrostatic Discharge ESDTypical G61MP Field Wiring Diagram Heat / 2 Cool Cut Intact OFF Cut Intact= Error Code Recall H= 24V Humidifier Output L= do not USE DIP Switches FunctionTWO−STAGE Integrated Control Board Integrated Control Board DIP Switch Settings and Jumpers Typical G61MP Wiring Diagram For Your Safety Read Before Operating Integrated Control BoardUnit Start−Up White Rodgers 36E Series GAS Valve Honeywell VR8205 Series GAS ValveGas Pressure Adjustment Urning Off Gas to Unit and call your service techniIf the appliance will not operate, follow the instructions High Altitude Information Order TWO EachOther Unit Adjustments Carbon Monoxide Poisoning HazardPage Blower Performance Data 270In. w.g High Low Cfm Watts 2840 1450 In. w.g High Low Cfm Watts 2720 1385 In. w.g High Low Cfm Watts 2730 1465 Heating Sequence of Operation Service Electrical SHOCK, Fire Or Explosion HazardPage Planned Service Ignition Control Board Diagnostic Codes Flash Code Status / Error Description+ Y Troubleshooting Heating Sequence of Operation On NextHeating Sequence of Operation Thermostat Calls for Heat Status LED − HeartbeatU1.40 microamps Or Heat Demand is SATISFIED. a Five Troubleshooting Cooling Sequence of Operation Cooling Sequence of OperationTroubleshooting Continuous Fan Sequence of Operation Repair Parts ListContinuous LOW Speed FAN Sequence of Operation Heat Anticipator Setting? Thermostat Level? Vent Pipe Sizing WorksheetG61MP Start−Up & Performance Check List − LP/Propane High Fire Manifold PressureRequirements for Commonwealth of Massachusetts LY BELOW. Keep Clear of ALL OBSTRUC- Tions
Related manuals
Manual 8 pages 10.79 Kb

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.
Top Page Image Contents