Lennox International Inc G50UH-48B-090 Wheninstalled,thisfurnacemustbeelectricallygrounded

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Wheninstalled,thisfurnacemustbeelectricallygrounded

accordingtolocalcodesInaddition,intheUnitedStates,. installationmustconformwiththecurrentNationalElec-

tricCode,ANSI/NFPANo.70.TheNationalElectricCode (ANSI/NFPANo.70) isavailablefromthefollowingad- dress:

NationalFireProtectionAssociation 1BatteryMarchPark Quincy,MA02269

InCanada,allelectricalwiringandgroundingfortheunit mustbeinstalledaccordingtothecurrentregulationsofthe

CanadianElectricalCodePartI (CSAStandardC22.1) and/orlocalcodes.

NOTE - This furnace is designed for a minimum continu- ous return air temperature of 60°F (16°C) or an intermit- tent operation down to 55°F (13°C) dry bulb for cases where a night setback thermostat is used. Return air tem- perature must not exceed 85°F (29 °C) dry bulb.

The G50UH(X) furnace may be installed in alcoves, clos- ets, attics, basements, garages, and utility rooms in the up- flow or horizontal position.

This furnace design has not been CSA International certi- fied for installation in mobile homes, recreational vehicles, or outdoors.

Lennox does not recommend the use of G50UH units as a construction heater during any phase of construction. Very low return air temperatures, harmful vapors and operation of the unit with clogged or misplaced filters will damage the unit.

G50UH units may be used for heating of buildings or struc-

tures under construction, if the following conditions are met:

•The vent system must be permanently installed per these installation instructions.

•A room thermostat must control the furnace. The use of fixed jumpers that will provide continuous heating is not allowed.

•The return air duct must be provided and sealed to the furnace.

•Return air temperature range between 60°F (16°C) and 80°F (27°C) must be maintained.

•Air filters must be installed in the system and must be maintained during construction.

•Air filters must be replaced upon construction comple- tion.

•The input rate and temperature rise must be set per the furnace rating plate.

•One hundred percent (100%) outdoor air must be pro- vided for combustion air requirements during construc- tion. Temporary ducting may supply outdoor air to the furnace. Do not connect duct directly to the furnace. Size the temporary duct following these instructions in section for Combustion, Dilution and Ventilation Air in a confined space with air from outside.

•The furnace heat exchanger, components, duct system, air filters and evaporator coils must be thoroughly cleaned following final construction clean-up.

•All furnace operating conditions (including ignition, in- put rate, temperature rise and venting) must be verified according to these installation instructions.

NOTE - The Commonwealth of Massachusetts stipu- lates these additional requirements:

•Gas furnaces shall be installed by a ticensedptumb- er or gas fitter only.

•The gas cock must be "T handle" type.

•When a furnace is installed in an attic, the passage- way to and service area surrounding the equipment shall be floored.

These instructions are intended as a general guide and do not supersede local codes in any way. Consult authorities having jurisdiction before installation.

In addition to the requirements outlined previously, the fol- lowing general recommendations must be considered when installing a G50UH(X) furnace:

•Place the furnace as close to the center of the air dis- tribution system as possible. The furnace should also be located close to the chimney or vent termination point.

•Do not install the furnace where drafts might blow direct- ly into it. This could cause improper combustion and un- safe operation.

•Do not block the furnace combustion air openings with clothing, boxes, doors, etc. Air is needed for proper combustion and safe unit operation.

•When the furnace is installed in an attic or other insu- lated space, keep insulation away from the furnace.

WARNING

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Contents G50UHX Series Supply AIR FlueBoxGasket HeatExchanger FlueCollectorBox Gasket FlueTransitionPackage 1 of 1 contains Wheninstalled,thisfurnacemustbeelectricallygrounded Acaution Canada,referto the standardCSAB149installation codesAir from Inside WiTER/ RoomEquipment in Confined Space ALL AIR from Outside Mm at unit front. The unit must be levelSide View Front View 27-5/8Removingthe Bottom Panel Leveling Bolt Installation Inches mmRemoving the Bottom Panel Leveling an Upflow UnitHorizontal Application Unit Installed on Platform Supply Air Plenum Filter SizeCombustion Air Inducer HoleOutletopeningSeefigure15 Venting Using a Masonry ChimneyThelatesteditionof NationalFuelGasCodeNFPA54 Vent ConnectionCombined Vent Connector Common Venting Using Tile-Lined Interior Masonry ChimneSingle appliance Minimum Vent capacityMaximum Horizontal Inches mm MIN MAX Serving a Single Category I Appliance Serving Two or More Category I Appliances Type B Double-WallVents with Type B Double-Wall ConnectorsRemoval of the Furnace from Common Vent VentGas Pipe Capacity ft3/hr m3/hr PropaneInstallationCodesinCanadaInterior MAKE-UP BOX Installation Precautions and ProceduresLeak Check Electrostatic Discharge ESDINTERIORMAKE-UP BOX Installation PowER @1HsuN,TZk for Correct Number of Secondary Typical G50UHX Field Wiring DiagramSot G5OUHXManifold For Your Safety Read Before LightingRevolution Honeywell VR8205 Gas Valve with ON/OFF SwitchPrimary and Secondary Limits G50UHX Burner & Heat Exchanger Removal FlueAnd ChimneyCheckunitforproperdraft Ak Caution Diagnostic Surelight Control Normal Heating Mode Abnormal Heating ModeYESl =-lYESl Normalcooling Mode Abnormalcooling ModeYEs FurnaceBtuInput BlowerMotorAmps

G50UH-60D-155, G50UH-36B-090, G50UH-36A-070, G50UH-24A-045, G50UH-60D-135 specifications

Lennox International Inc is renowned for its high-quality heating, ventilation, and air conditioning (HVAC) solutions. Among its versatile product lineup are the G50UH series of gas furnaces, which exemplify efficiency and performance. These models, specifically the G50UH-24A-070, G50UH-24A-045, G50UH-36B-090, G50UH-36A-070, and G50UH-48C-135, offer a range of features tailored to meet varying residential heating demands.

One of the key features of the G50UH series is its energy efficiency. Many models in this lineup boast an impressive Annual Fuel Utilization Efficiency (AFUE) rating, which indicates their ability to convert fuel into usable heat efficiently. These high AFUE ratings can lead to significant savings on energy bills, making these furnaces a cost-effective choice for homeowners.

The G50UH series incorporates advanced technology, including multi-speed blowers that enhance comfort levels. This feature allows for better airflow control and can help maintain consistent temperatures throughout the home. The controlled airflow reduces temperature swings and ensures that every room benefits from the heating provided by the furnace.

Safety is paramount in Lennox designs, and the G50UH series is no exception. Each unit is equipped with safety features designed to protect both the furnace and the home. Dual certification ensures that the products meet stringent safety standards. Moreover, features like a self-diagnostic control board streamline maintenance, allowing homeowners to easily identify potential issues.

Another important characteristic of the G50UH series is its compact design, which is beneficial for homes with limited space. The units are designed to fit comfortably in various installation environments, from basements to utility rooms.

Durability is another hallmark of the G50UH furnaces. Constructed with quality materials, these units are designed for long-term reliability. This ensures that homeowners can enjoy the comfort of their heating systems without frequent repairs.

Lastly, Lennox provides extensive support and warranties, giving homeowners peace of mind associated with their purchase. With options tailored to meet diverse home heating needs, the Lennox G50UH series stands out in the HVAC market, combining efficiency, safety, and reliability in one impressive package.
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