Lennox International Inc Gas Units Installation − Setting Equipment, Equipment operation

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EQUIPMENT IN CONFINED SPACE − ALL AIR FROM OUTSIDE (Inlet Air from Crawl Space and Outlet Air to Ventilated Attic)

in the enclosure. See figures 4 and 5. When communicat- ing with the outdoors through horizontal ducts, each open-

ing shall have a minimum free area of 1 square inch (645

ROOF TERMINATED EXHAUST PIPE

SIDE WALL

TERMINATED EXHAUST PIPE (ALTERNATE LOCATION)

G61MP

VENTILATION LOUVERS

(Each end of attic)

 

OUTLET

 

AIR

 

VENTILATION

 

LOUVERS

INLET

(For unheated

AIR

crawl space)

mm2) per 2,000 Btu (.56 kW) per total input rating of all equipment in the enclosure. See figure 6.

When ducts are used, they shall be of the same cross−sec- tional area as the free area of the openings to which they connect. The minimum dimension of rectangular air ducts shall be no less than 3 inches (75 mm). In calculating free area, the blocking effect of louvers, grilles, or screens must be considered. If the design and free area of protec- tive covering is not known for calculating the size opening required, it may be assumed that wood louvers will have 20 to 25 percent free area and metal louvers and grilles will have 60 to 75 percent free area. Louvers and grilles must be fixed in the open position or interlocked with the equipment so that they are opened automatically during

NOTE−The inlet and outlet air openings shall each have a free area of at least one square inch per 4,000 Btu (645mm2 per 1.17kW) per hour of the total input rating of all equipment in the enclosure.

FIGURE 4

equipment operation.

EQUIPMENT IN CONFINED SPACE −

ALL AIR FROM OUTSIDE

EQUIPMENT IN CONFINED SPACE − ALL AIR FROM OUTSIDE

(All Air Through Ventilated Attic)

ROOF TERMINATED

VENTILATION LOUVERS

EXHAUST PIPE

(Each end of attic)

 

OUTLET

AIR

ROOF TERMINATED EXHAUST PIPE

SIDE WALL

TERMINATED EXHAUST PIPE (ALTERNATE LOCATION)

G61MP

OUTLET AIR

INLET AIR

SIDE WALL

INLET AIR

(Ends 12" above

TERMINATED

bottom)

EXHAUST PIPE

 

(ALTERNATE

G61MP

LOCATION)

 

NOTE−The inlet and outlet air openings shall each have a free area of at least one square inch per 4,000 Btu (645mm2 per 1.17kW) per hour of the total input rating of all equipment in the enclosure.

FIGURE 5

If air from outside is brought in for combustion and ventila- tion, the confined space must have two permanent open- ings. One opening shall be within 12 inches (305 mm) of the top of the enclosure and one opening within 12 inches (305 mm) of the bottom. These openings must communi- cate directly or by ducts with the outdoors or spaces (crawl or attic) that freely communicate with the outdoors or indi- rectly through vertical ducts. Each opening shall have a minimum free area of 1 square inch (645 mm2) per 4,000 Btu (1.17 kW) per hour of total input rating of all equipment

NOTE−Each air duct opening shall have a free area of at least one square inch per 2,000 Btu (645mm2per .59kW) per hour of the total input rating of all equipment in the enclosure. If the equipment room is located against an outside wall and the air openings communi- cate directly with the outdoors, each opening shall have a free area of at least 1 square inch per 4,000 Btu (645mm2 per 1.17kW) per hour of the total input rating of all other equipment in the enclosure.

FIGURE 6

Installation − Setting Equipment

WARNING

Do not install the furnace on its front or its back. Do not connect the return air ducts to the back of the fur- nace. Doing so will adversely affect the operation of the safety control devices, which could result in per- sonal injury or death.

Select a location that allows for the required clearances that are listed on the unit nameplate. Also consider gas supply connections, electrical supply, vent connection, condensate trap and drain connections, and installation and service clearances [24 inches (610 mm) at unit front].

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Contents Installation Instructions Table of ContentsFront View Side View G61MP Unit Dimensions − inches mmTOP 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 Equipment in Confined Space − ALL AIR from Outside Installation − Setting EquipmentEquipment operation 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 ViewINTAKE/EXHAUST Connection Support Frame Drain PAN Blower Access PanelTypical Horizontal Ceiling Application Intake Pipe Exhaust Pipe GAS ConnectorMIN Raised Platform Condensate Line Service Platform 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 Transition Direct Vent applications where combustion air is takenFrom indoors and flue gases are discharged outdoors 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 ApplicationSide View NON−DIRECT Vent Wall Ring Termination G61MP NON−DIRECT Vent Application Using Existing ChimneyCondensate Piping 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 IntactTWO−STAGE Integrated Control Board = Error Code Recall H= 24V Humidifier Output L= do not USEDIP Switches Function Integrated Control Board DIP Switch Settings and Jumpers Typical G61MP Wiring Diagram Unit Start−Up For Your Safety Read Before OperatingIntegrated Control Board White Rodgers 36E Series GAS Valve Honeywell VR8205 Series GAS ValveIf the appliance will not operate, follow the instructions Gas Pressure AdjustmentUrning Off Gas to Unit and call your service techni 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 + Y Ignition Control Board Diagnostic CodesFlash Code Status / Error Description 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 OperationContinuous LOW Speed FAN Sequence of Operation Troubleshooting Continuous Fan Sequence of OperationRepair Parts List 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
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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.
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