Goodman Mfg CVC9/95, MVC95 Gasinputratemeasurementnaturalgasonly, Temperaturerise

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STARTUP PROCEDURE & ADJUSTMENT

9.Close thermostat “R” and “W2” contacts to provide a call for high stage heat.

10.Remove regulator cover screw from the high (HI) outlet pressure regulator adjust tower and turn screw clockwise to increase pressure or counterclockwise to decrease pressure. Replace regulator cover screw.

11.Turn off all electrical power and gas supply to the system.

12.Remove the manometer hose from the hose barb fitting or outlet pressure boss.

13.Replace outlet pressure tap:

a.Honeywell VR9205 valve: Remove the 1/8" NPT hose barb fitting from the outlet pressure tap. Replace the outlet pressure boss plug and seal with a high quality thread sealer.

b.White-Rodgers 36G54 valve: Turn outlet pressure test screw in to seal pressure port (clockwise, 7 in-lb minimum).

14.Turn on electrical power and gas supply to the system.

15.Close thermostat contacts “R” and “W1/W2” to energize thevalve.

Using a leak detection solution or soap suds, check for leaks at outlet pressure boss plug (Honeywell valve) or screw (White-Rodg- ers valve). Bubbles forming indicate a leak. SHUTOFF GASAND REPAIRALL LEAKS IMMEDIATELY!

NOTE: For gas to gas conversion, consult your dealer for appropriate conversion.

 

Manifold Gas Pressure

 

 

Gas

Range

Nom inal

Natural

Low Stage

1.6 - 2.2"

w .c.

1.9" w .c.

 

High Stage

3.2 - 3.8"

w .c.

3.5" w .c.

Propane

Low Stage

5.7 - 6.3"

w .c.

6.0" w .c.

 

High Stage

9.7 - 10.3" w .c.

10.0" w .c.

GASINPUTRATEMEASUREMENT(NATURALGASONLY)

The gas input rate to the furnace must never be greater than that specified on the unit rating plate. To measure natural gas input using the gas meter, use the following procedure.

1.Turn OFF the gas supply to all other gas-burning appliances except the furnace.

2.While the furnace is operating, time and record one complete revolution of the smallest gas meter dial.

3.Calculate the number of seconds per cubic foot (sec/ft3) of gas being delivered to the furnace. If the dial is a one cubic foot dial, divide the number of seconds recorded in step 2 by one. If the dial is a two cubic foot dial, divide the number of seconds recorded in step 2 by two.

4.Calculate the furnace input in BTUs per hour (BTU/hr). Input equals the sum of the installation’s gas heating value and a conversion factor (hours to seconds) divided by the number of seconds per cubic foot. The measured input must not be greater than the input indicated on the unit rating plate.

EXAMPLE:

Installation’s gas heating (HTG) value: 1,000 BTU/ft3 (Obtained from gas supplier)

Installation’s seconds per cubic foot: 34 sec/ ft3

Conversion Factor (hours to seconds): 3600 sec/hr Input = (Htg. value x 3600) ÷ seconds per cubic foot Input = (1,000 BTU/ft3 x 3600 sec/hr) ÷ 34 sec/ ft3 Input = 106,000 BTU/hr

Minor changes to the input rate may be accomplished through manifold pressure adjustments at the gas valve. Refer to Startup Procedure and Adjustment - Gas Manifold Pressure Measurement and Adjustment section for details. NOTE: The final manifold pressure cannot vary by more than ± 0.3” w.c. from the specified setting. Consult your local gas supplier if additional input rate adjustment is required.

5.Repeat steps 2 through 4 on high stage.

6.Turn ON gas to and relight all other appliances turned off in step 1. Be certain that all appliances are functioning properly and that all pilot burners are operating.

TEMPERATURERISE

Temperature rise must be within the range specified on the unit rating plate.An incorrect temperature rise may result in condens- ing in or overheating of the heat exchanger. An airflow and tem- perature rise table is provided in the Specification Sheet applicable to your model. Determine and adjust temperature rise as follows:

1.Operate furnace with burners firing for approximately ten minutes. Ensure all registers are open and all duct dampers are in their final (fully or partially open) position.

2.Place thermometers in the return and supply ducts as close to the furnace as possible. Thermometers must not be influenced by radiant heat by being able to “see” the heat exchanger.

3.Subtract the return air temperature from the supply air temperature to determine the air temperature rise. Allow adequate time for thermometer readings to stabilize.

4.Adjust temperature rise by adjusting the circulator blower speed. Increase blower speed to reduce temperature rise. Decrease blower speed to increase temperature rise. Refer to Startup Procedure and Adjustment -Circulator Blower Speeds for speed changing details.

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Contents Type FSP Category IV Direct or Non Direct Vent Air Furnace Product Description Normal Sequence of Operation Troubleshooting What to do if YOU Smell GAS Safety PrecautionsShippinginspection ElectrostaticdischargeesdprecautionsTotheinstaller Product Description & ApplicationFeatures Product DescriptionProductapplication Location Requirements & Considerations Clearancesandaccessibility FurnacesuspensionExistingfurnaceremoval Installation Positions Combustion & Ventilation AIR RequirementsThermostatlocation AlternateVent/FlueLocation RecommendedInstallationPositions Horizontal Applications & ConsiderationsHorizontalFurnace VENT/FLUE Pipe & Combustion AIR Pipe Propane GAS/HIGH Altitude InstallationsMaterialsandjoiningmethods PROPERVENT/FLUEANDCOMBUSTIONAIRPIPINGPRACTICESTerminationlocations Standardfurnaceconnections Increased Clearance ConfigurationVent Termination Clearances CanadianventingrequirementsAlternatefurnaceconnections Vent/FluePipeCutsRemove Pipe Relocate NON-DIRECTVENTSINGLEPIPEPIPING UpflowDirectventdualpipepiping Vertical Termination Single PipeAlternate Vertical Termination Single Pipe HorizontalTerminationSinglePipeStandard Horizontal Terminations Dual Pipe Vertical Terminations Dual PipeSide Wall Vent KIT Alternate Horizontal Vent Termination Dual PipeHorizontalVentingOfMultipleUnits ConcentricventterminationCondensate Drain Lines & Drain Trap Hose and Tube IdentificationStandardrightorleftsidedrainhoseconnections Drain Trap Mounting UPRIGHTINSTALLATIONS-TRAPONRIGHTSIDEExternally UPRIGHTINSTALLATIONS-TRAP on Leftside Counterflow furnaces HorizontalinstallationsCut 115VOLT Line Connections WiringharnessElectrical Connections Junctionbox RelocationThermostat Wiring Diagrams 24VOLTTHERMOSTATWIRINGSINGLE-STAGE Heatingthermostatapplication Fossilfuelapplications Accessory load specifications are as followsHighaltitudederate Accessories WiringGAS Supply and Piping 24VOLTHUMIDIFIERNatural Gas Capacity of Pipe Cubic Feet of Gas Per Hour CFH GaspipingconnectionsGas Piping Connections Horizontal Upflow ModelPropaneGasInstallationTyp Coupling Degree elbow Inch close nipplePropanegastanksandpiping Checking Duct Static Propane Gas Piping ChartCirculating AIR & Filters Duct Work -AIR FlowBottomreturnairopeningupflowmodels Consult proper tables for the quantity of airChecking Static Pressure 80% Furnace Shown, 90% Similar DuctFlangeCutOutsStartup Procedure & Adjustment Startup Procedure &ADJUSTMENTFollowing figure shows possible filter locations White-Rodgers Model 36G54 Two-Stage TemperatureSet the thermostat to the lowest setting If you smell gas after five minutes, immediately followMeasuring Inlet Gas Pressure Alt. Method GasmanifoldpressuremeasurementandadjustmentTurn on the gas supply Honeywell Model VR9205 Connected to ManometerGasinputratemeasurementnaturalgasonly TemperatureriseCirculatorblowerspeeds Temperature Rise MeasurementAirflowTable Overview Heat Off Delay DipswitchesBlowerheat Offdelay Timings Comfortnet SystemSystem System Operating System Wiring using Four-WiresValue. Touch Touch To step through the list of installed equipComfortnetsystemadvancedfeatures Pear. UseConfiguration Is 30 seconds Non-CT compatible single stage AC unit NetworktroubleshootingHeatingmode SystemtroubleshootingPower UP Normal Sequence of OperationOperational Checks & Safety Circuit Description CoolingmodeFanonlymode Troubleshooting & Maintenance Operational Checks Safety Circuit DescriptionTroubleshooting Troubleshooting & Maintenance MaintenanceFollow the manufacturer’s directions for service Miscellaneous Before Leaving AN InstallationRepair and Replacement Parts Induced Draft Blower Transformer Door SwitchBank DIP SwitchesInternal Troubleshooting ChartLimit Message ChartInvalid Trips Status Codes CVC9AA, *MVC95AA Wiring DiagramCVC9AB, *MVC95AB

MVC95, CVC9/95 specifications

Goodman Manufacturing has established itself as a leader in the HVAC industry, and among its stellar lineup, the Goodman CVC9/95 and MVC95 stand out for their remarkable features, technologies, and efficiency.

The Goodman CVC9/95 is a high-performance gas furnace, designed for homeowners seeking reliability and cost-effective heating solutions. It operates with an impressive 95% Annual Fuel Utilization Efficiency (AFUE), which means that a significant portion of the fuel it consumes is converted into heat. This level of efficiency not only contributes to lower energy bills but also reduces greenhouse gas emissions, making it an environmentally friendly choice.

One of the standout features of the CVC9/95 is its multi-speed ECM blower motor. This technology adjusts the airflow according to the heating demands of the home, ensuring consistent and comfortable temperatures. The ECM motor also operates quietly, enhancing the comfort of your living space without the disruptive noise often associated with traditional furnaces.

The MVC95, on the other hand, offers similar efficiency with its also 95% AFUE rating. This model is equipped with a patented ignition system that enhances reliability with minimal maintenance needs. Its durable construction includes a heavy-gauge steel cabinet and an insulated blower compartment that minimizes heat loss. This design not only supports optimal performance but also contributes to its longevity.

Both models come with a self-diagnostic control board that provides straightforward troubleshooting capabilities, making it easier for technicians to ensure that your system is operating at peak performance. This feature aids in timely maintenance, which is crucial for extending the lifespan of the unit.

Additionally, Goodman backs their products with a strong warranty, offering a lifetime limited warranty on the heat exchanger and a 10-year limited parts warranty. This assurance provides homeowners peace of mind regarding their investment.

In the landscape of HVAC solutions, the Goodman CVC9/95 and MVC95 models exemplify a commitment to quality, efficiency, and advanced technology. Whether for new constructions or replacements, these furnaces offer superior heating performance coupled with modern conveniences, making them an invaluable choice for homeowners seeking effective climate control solutions. With their low emissions and high efficiency, choosing Goodman means investing in both comfort and sustainability.
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