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I
NSTALLATION
These furnaces comply with requirements em-
bodied in the American National Standard / Na-
tional Standard of Canada ANSI Z21.47·CSA-
2.3 Gas Fired Central Furnaces.
ATTENTION INSTALLING PERSONNEL
As a professional installer, you have an obligation to know the product better than the customer.
Prior to actual installation, thoroughly familiarize yourself with this Instruction Manual.
Pay special attention to all safety warnings. Often during installation or repair, it is possible to place yourself
in a position which is more hazardous than when the unit is in operation.
Remember, it is your responsibility to install the product safely and to know it well enough
Safety is a matter of common sense...a matter of thinking before acting.
Most dealers have a list of specific, good safety practices...follow them.
The precautions listed in this Installation Manual are intended as supplemental to existing practices.
However, if there is a direct conflict between existing practices and the content of this manual,
IO-429A
6/2013
is a registered trademark of Maytag Corporation or its related companies and is used under license. All rights reserved.
I
NSTRUCTIONS FOR
(CATEGORY I )
Installer: Affix all manuals adjacent to the unit.
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.
This includes all safety precautions and related items.
to be able to instruct a customer in its safe use.
the precautions listed here take precedence.
NOTE: Please contact your distributor or our website listed below
for the applicable Specification Sheet referred to in this manual.
G
OODMAN
WILL
NOT
BE
DAMAGE
ARISING
FROM
I
F
YOU
INSTALL
OR
PERFORM
RESPONSIBILITY
FOR
ANY
. M
WHICH
MAY
RESULT
INSTALL
OR
SERVICE
HEATING
5151 San Felipe Suite 500 • Houston, TX 77056
www.goodmanmfg.com • www.amana-hac.com
© 2011 - 2013 Goodman Manufacturing Company, L.P.
*(D, M)VC8 G
WARNING
RESPONSIBLE
FOR
ANY
INJURY
IMPROPER
SERVICE
OR
SERVICE
,
SERVICE
ON
THIS
UNIT
YOU
PERSONAL
INJURY
OR
PROPERTY
ANY
JURISDICTIONS
REQUIRE
A
AND
AIR
CONDITIONING
EQUIPMENT
F
AS
URNACE
OR
PROPERTY
.
PROCEDURES
ASSUME
DAMAGE
LICENSE
TO
.
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Table of Contents
Troubleshooting
Related Manuals for Goodman MVC8
Summary of Contents for Goodman MVC8
- Page 1 *(D, M)VC8 G NSTALLATION NSTRUCTIONS FOR URNACE (CATEGORY I ) Installer: Affix all manuals adjacent to the unit. These furnaces comply with requirements em- bodied in the American National Standard / Na- tional Standard of Canada ANSI Z21.47·CSA- 2.3 Gas Fired Central Furnaces. RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.
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Page 2: Table Of Contents
EATURES ................................6 RODUCT PPLICATION ..........................7 OCATION EQUIREMENTS AND ONSIDERATIONS ............................9 LEARANCES AND CCESSIBILITY ..............................9 NSTALLATION OSITIONS (*MVC8 M ) ....................... 9 ORIZONTAL NSTALLATION ODELS ..............................9 URNACE USPENSION .............................. 9 XISTING URNACE EMOVAL ............................... 9 HERMOSTAT OCATION ........................ - Page 3 UALIFIED ERVICER ) ........................39 ASSAGES UALIFIED ERVICER .............................. 39 EFORE EAVING AN NSTALLATION .............................. 39 EPAIR AND EPLACEMENT ARTS ............................... 40 ROUBLESHOOTING HART ..................................45 TATUS ODES ..................................46 ..................................47 WITCHES *MVC8, *DVC8 W ............................48 IRING IAGRAM...
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Page 4: Safety Considerations
AFETY ONSIDERATIONS WARNING Adhere to the following warnings and cautions when installing, INFORMATION THESE INSTRUCTIONS FOLLOWED , EXACTLY FIRE EXPLOSION RESULT CAUSING PROPERTY adjusting, altering, servicing, or operating the furnace. To en- , ... -
Page 5: Dditional Afety Onsiderations
WARNING , PREVENT PERSONAL INJURY DEATH ASPHYXIATION THIS C I . D FURNACE MUST ATEGORY VENTED VENT USING III ATEGORY VENTING ... -
Page 6: Electrostatic Discharge
(ESD) P This product may also be installed with the ComfortNet ther- LECTROSTATIC ISCHARGE RECAUTIONS mostat and a non-ComfortNet compatible single stage air con- NOTE: Discharge body’s static electricity before touching unit. ditioning unit. However, this reduces the benefits of the An electrostatic discharge can adversely affect electrical com- ComfortNet system as the enhancements will only apply to the ponents. -
Page 7: Ocation Equirements And Clearances And Accessibility
Your unit model type determines which installation procedures tion and operation instructions, all local building codes must be used. For *MVC8 models, you must follow instruc- and ordinances. In their absence, follow the latest edition of tions for Horizontal Left, Horizontal Right or Upflow installa- the National Fuel Gas Code (NFPA 54/ANSI Z223.1), and/or... - Page 8 • Ensure the temperature of the return air entering the • For counterflow installations, the air conditioning coil furnace is between 55°F and 100°F when the furnace must be downstream from the heat exchanger of the is heating. furnace. • Provisions must be made for venting combustion •...
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Page 9: Installation Positions
NOTE: Ductwork must never be attached to the back of the windows and all doors between the space in which furnace. the appliance(s) connected to the venting system are (*MVC8 M located and other spaces of the building. Turn on ORIZONTAL NSTALLATION... -
Page 10: Combustion And Ventilation Airr
• Drafts, or dead spots behind doors, in corners, or under This furnace must use indoor air for combustion. It cannot be cabinets. installed as a direct vent (i.e., sealed combustion) furnace. • Hot or cold air from registers. Most homes will require outside air be supplied to the furnace •... -
Page 11: Xterior Asonry Himneys
Vent the furnace in accordance with the National Fuel Gas WARNING Code NFPA 54/ANSI Z223.1 - latest edition. In Canada, vent the furnace in accordance with the National Standard of Canada, , EVER ALLOW PRODUCTS COMBUSTION... -
Page 12: Checklist Summary
Wash Proper Chimney Termination? Roof Line (Check 1) Clay Tile Size: 8" x 8" x12" (Each x 24" Length) Attic Floor 1/2" to 1" Air Space Chimney channel free of solid and Change venting liquid fuel arrangements Second Floor appliances? (Fix 2) (Check 2) Throat... -
Page 13: Check 2 - Any Solid Or Liquid
If the chimney does not meet these termination requirements, Appliances which burn propane (sometimes referred to as LP but all other requirements in the checklist can be met, it may (liquefied petroleum)) gas are considered gas-fired appliances. be possible for a mason to extend the chimney. If this will not 3 - C HECK HIMNEY... -
Page 14: Check 6 - Dilution Air
Next, use a flashlight and small mirror to sight up the liner. B 7 - C HECK OMPLETE THE NSTALLATION vent must be supported so as to not come into direct contact If Checks 1 through 6 have been satisfactory, and the liner is an with the chimney walls or tile liner. -
Page 15: Fix
3 - R For sizing of flexible liners, see Note 22 and the tables in the EBUILD THE ROWN National Fuel Gas Code NFPA 54/ANSI Z223.1 - latest edition If the chimney crown is damaged, a qualified mason must re- and in the National Standard of Canada, CAN/CSA B149.1 and pair it in accordance with nationally recognized building codes CAN/CSA B149.2 - latest editions and amendments. -
Page 16: Wiring Harness
Line voltage connections can be made through either the right WARNING or left side panel. The furnace is shipped configured for a right HIGH VOLTAGE ! side electrical connection. To make electrical connections through the opposite side of the furnace, the junction box must ... -
Page 17: Volt Thermostat Wiring
1. Measure resistance between the neutral (white) connection and one of the burners. 2. Resistance should measure 10 ohms or less. Furnace Integrated Control Module This furnace is equipped with a blower door interlock switch which interrupts unit voltage when the blower door is opened for servicing. -
Page 18: Volt Dehumidistat Wiring
To use a single-stage thermostat, turn off power to the furnace, OSSIL PPLICATIONS move the thermostat selection DIP switch to the OFF position. This furnace can be used in conjunction with a heat pump in a Set the desired transition time by setting the transition delay fossil fuel application. -
Page 19: Volt Humidifier
NEUTRAL 24 V UMIDIFIER A 24 volt humidifier can be powered by feeding one of the HUM terminals with a field installed wire from the R terminal or by connecting to the NO side of the low fire pressure switch. Accessories Wiring UXILIARY LARM... -
Page 20: High Altitude Derate
NOTE: Do not remove the gas valve inlet plug before the gas This unit is configured for natural gas. The appropriate line is installed. Replace if water or debris has been introduced. manufacturer’s propane gas conversion kit, must be applied for propane gas installations. -
Page 21: Upflow Installations
• Use black iron or steel pipe and fittings for the building piping. Gas line • Use pipe joint compound on male threads only. Pipe entrance joint compound must be resistant to the action of the fuel used. • Use ground joint unions. •... -
Page 22: Gas Piping Checks
For satisfactory operation, propane gas pressure must be 10 IPING HECKS inch WC at the furnace manifold with all gas appliances in Before placing unit in operation, leak test the unit and gas con- operation. Maintaining proper gas pressure depends on three nections. -
Page 23: Circulating Air And Filters
When the furnace is heating, the temperature of the return air Sizing Between Second Stage and Appliance Regulator* Maximum Propane Capacities listed are based on 2 psig pressure drop at 10 psig setting. entering the furnace must be between 55°F and 100°F. Capacities in 1,000 BTU/hour. -
Page 24: Filters - Read This Section
MINIMUM FILTER SIZES for DISPOSABLE FILTERS FURNACE INPUT (BTU/hr) FILTER SIZE 610 in 813 in 100K 889 in DISPOSABLE NOMINAL 300 F.P.M. FACE VELOCITY ORIZONTAL NSTALLATIONS Filters must be installed in either the central return register or in the return air duct work. TART ROCEDURE DJUSTMENT... -
Page 25: Gas Supply Pressurem
12. After the burners are lit, set the thermostat to desired 7. After completion of the 5-minute timer or test mode termi- temperature. nation, whichever is earlier, the system will return to normal operation, either continuing an existing heat demand or going URNACE HUTDOWN to the idle state. -
Page 26: Gas Manifold Pressurem
High Fire INLET GAS SUPPLY PRESSURE Regulator Regulator Natural Gas Minimum: 4.5" w.c. Maximum: 10.0" w.c. Adjust Vent Propane Gas Minimum: 11.0" w.c. Maximum: 13.0" w.c. If supply pressure differs from table, make the necessary ad- justments to pressure regulator, gas piping size, etc., and/or consult with local gas utility. -
Page 27: Gas Input Rate Measurement
4. Attach a hose and manometer to the outlet pressure 2. While the furnace is operating, time and record one barb fitting (Honeywell valve) or outlet pressure boss complete revolution of the smallest gas meter dial. (White-Rodgers valve). 3. Calculate the number of seconds per cubic foot (sec/ft 5. -
Page 28: Circulator Blower Speeds
This furnace is equipped with a multi-speed circulator blower. HEAT EXCHANGER RADIATION "LINE OF SIGHT" This blower provides ease in adjusting blower speeds. The Specification Sheet applicable to your model provides an air- SUPPLY flow table, showing the relationship between airflow (CFM) and external static pressure (E.S.P.), for the proper selection of heating and cooling speeds. - Page 29 • Profile A provides only an OFF delay of one (1) minute 2. Determine the proper air flow for the cooling system. at 100% of the cooling demand airflow. Most cooling systems are designed to work with air flows between 350 and 450 CFM per ton. Most manufacturers recommend an air flow of about 400 CFM per ton.
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Page 30: Blower Heat Off Delay Timings
• Profile D ramps up to 50% of the demand for 1/2 minute, Sw itch Bank : S1 then ramps to 85% of the full cooling demand airflow DIP Sw itch No. Heat OFF Delay and operates there for approximately 7 1/2 minutes. The motor then steps up to the full demand airflow. -
Page 31: Ossil Uel Pplications
the ECM motor. If the outdoor unit or thermostat is respon- OSSIL PPLICATIONS sible for determining the demand, it calculates the demand This furnace can be used in conjunction with a ComfortNet™ com- and transmits the demand along with a fan request to the patible heat pump in a fossil fuel application. -
Page 32: Omfort Et Ompatible
™ S OMFORT YSTEM DVANCED EATURES NOTE: Use of a transformer is recommended if installing a dual fuel/fossil fuel system. Failure to use the transformer in the The ComfortNet system permits access to additional system outdoor unit could result in over loading of the furnace transformer. information, advanced setup features, and advanced diagnos- CTK0* Thermostat... -
Page 33: Furnace Advanced Features
URNACE DVANCED EATURES ENUS CCESSED THROUGH OMMUNICATING HERMOSTAT CONFIGURATION Submenu Item Indication (for Display Only; not User Modifiable) Number of Heat Stages (HT STG) Displays the number of furnace heating stages Input Rate (BTU/HR) Displays the furnace input rate in kBtu/hr Motor HP (1/2, ¾, or 1 MTR HP) Displays the furnace indoor blower motor horsepower DIAGNOSTICS... -
Page 34: Network Troubleshooting
STATUS Submenu Item Indication (for Display Only; not User Modifiable) Mode (MODE) Displays the current furnace operating mode CFM (CFM) Displays the airflow for the current operating mode NON-COMM (APPLIES ONLY TO A COMMUNICATING COMPATIBLE FURNACE MATCHED WITH A NON-COMMUNICATING COMPATIBLE SINGLE STAGE AIR CONDITIONER) Submenu Item User Modifiable Options Comments... -
Page 35: Heating Mode
Description Possible Cause Corrective Action Comments Normal condition None None None 1 Flash Communications Communications •Depress Learn Button •Depress once quickly for Failure Failure a power-up reset •Verify that bus BIAS and TERM dipswitches are in •Depress and hold for 2 the ON position. -
Page 36: Cooling Mode
• • Furnace runs, integrated control module monitors safety R and Y1/G or Y2/G thermostat contacts open, circuits continuously. completing the call for cool. • • If the two-stage thermostat changes the call from low Outdoor fan and compressor are de-energized. heat to high heat, the integrated control module will •... -
Page 37: Safety Circuit Description
Use the following precautions during furnace installation and AFETY IRCUIT ESCRIPTION servicing to protect the integrated control module from dam- age. By putting the furnace, the control, and the person at the A number of safety circuits are employed to ensure safe and same electrostatic potential, these steps will help avoid expos- proper furnace operation. -
Page 38: Resetting From Lockout
ESETTING OCKOUT ILTERS Furnace lockout results when a furnace is unable to achieve CAUTION ignition after three attempts during a single call for heat. It is , characterized by a non-functioning furnace and a E E E E E 0 0 0 0 0 code dis- ENSURE PROPER UNIT... -
Page 39: Flame Sensor
NDUCED RAFT AND IRCULATOR LOWERS EFORE EAVING AN NSTALLATION • The bearings in the induced draft blower and circulator blower Cycle the furnace with the thermostat at least three motors are permanently lubricated by the manufacturer. No fur- times. Verify cooling and fan only operation. ther lubrication is required. - Page 40 ROUBLESHOOTING HART ComfortNet™ Symptoms of Abnormal Diagnostic/ Thermostat Only Operation (Legacy & Status LED Fault Description Possible Causes Corrective Actions Notes & Cautions ComfortNet™ Thermostat) Codes Message Code • Furnace fails to operate None • No 115 power to INTERNAL •...
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Page 41: Troubleshooting Chart
ROUBLESHOOTING HART Symptoms of Abnormal ComfortNet™ Diagnostic/ Operation (Legacy Thermostat Only Status LED Fault Description Possible Causes Corrective Actions Notes & Cautions & ComfortNet™ Codes Thermostat) Message Code • Induced draft blower • Low stage PS1 OPEN • Pressure switch hose •... - Page 42 ROUBLESHOOTING HART ComfortNet™ Symptoms of Abnormal Diagnostic/ Operation (Legacy Thermostat Only Status LED Fault Description Possible Causes Corrective Actions Notes & Cautions & ComfortNet™ Codes Message Code Thermostat) • Furnace fails to operate. • Problem with IGNITER • Improperly connected •...
- Page 43 ROUBLESHOOTING HART ComfortNet™ Symptoms of Abnormal Diagnostic/ Thermostat Only Operation (Legacy Status LED Fault Description Possible Causes Corrective Actions Notes & Cautions & ComfortNet™ Codes Message Code Thermostat) • Operation different than • Invalid memory INVALID MC • Shared data set on •...
- Page 44 ROUBLESHOOTING HART ComfortNet™ Symptoms of Abnormal Diagnostic/ Thermostat Only Operation (Legacy Status LED Fault Description Possible Causes Corrective Actions Notes & Cautions & ComfortNet™ Codes Message Code Thermostat) • Circulator blower MOTOR • Turn power OFF prior • Furnace fails to operate. motor senses TRIPS to repair...
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Page 45: Status Codes
TATUS ODES INTERNAL CONTROL FAULT/NO POWER NORMAL OPERATION LOCKOUT DUE TO EXCESSIVE RETRIES LOW STAGE PRESSURE SWITCH STUCK CLOSED AT START OF HEATING CYCLE LOW STAGE PRESSURE SWITCH STUCK OPEN OPEN HIGH LIMIT SWITCH FLAME DETECTED WHEN NO FLAME SHOULD BE PRESENT OPEN FUSE LOW FLAME SIGNAL IGNITER FAULT OR IMPROPER GROUNDING... -
Page 46: Air Flow Data
Speed Selection Dip Switches Model Low Stage High Stage Low Stage High Stage Cool Cool Heat Heat Cool Adjust Profile Heat Selection Selection Selection Selection 1050 Switches Switches Switches Switches 1150 *DVC80603B*** 1000 1250 S3- 1 S3- 2 S3- 3 S3- 4 S4-1 S4-2 S4- 3 S4- 4 1200 1350... -
Page 47: Dip Switches
WITCHES Dip Switch Switch Bank Purpose Function Heating Off Delay 2 Stage Stat 2 Stage Stat Thermostat Setup 1 Stg Stat 5 min delay 1 Stg Stat auto delay Cooling Airflow Add 5% Minus 5% Trim Add 10% Minus 10% Ramping Profile Heating Airflow Disabled... -
Page 48: Mvc8, *Dvc8 Wiring Diagram
*MVC8, *DVC8 W IRING IAGRAM Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.