Table of Contents
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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-418C
5/2012
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 - 2012 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 VC8
Summary of Contents for Goodman VC8
- Page 1 RESPONSIBILITY WHICH INSTALL IO-418C 5/2012 *(D, M)VC8 G NSTRUCTIONS FOR (CATEGORY I ) Installer: Affix all manuals adjacent to the unit. to be able to instruct a customer in its safe use. the precautions listed here take precedence. WARNING ...
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Page 2: Table Of Contents
DDITIONAL AFETY ONSIDERATIONS ... 5 HIPPING NSPECTION (ESD) P LECTROSTATIC ISCHARGE ... 5 NSTALLER MPORTANT OTE TO THE WNER ... 6 RODUCT ESCRIPTION ... 6 EATURES ... 6 RODUCT PPLICATION OCATION EQUIREMENTS AND ONSIDERATIONS LEARANCES AND CCESSIBILITY ... 8 NSTALLATION OSITIONS (*MVC8 M ORIZONTAL... - Page 3 TART ROCEDURE DJUSTMENT ... 23 NTICIPATOR ETTING ... 23 URNACE PERATION UPPLY RESSURE EASUREMENT ANIFOLD RESSURE EASUREMENT AND NPUT EASUREMENT ... 26 EMPERATURE IRCULATOR LOWER PEEDS LOWER ELAY IMINGS ™ S ... 29 OMFORT YSTEM ... 29 VERVIEW ... 30 OSSIL PPLICATIONS CTK0* W...
- Page 4 the danger of carbon monoxide (CO) poisoning resulting from the exhaust LIFE emissions. If a furnace or air handler is installed in an enclosed area such ...
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Page 5: Shipping Inspection
Use the following precautions during furnace installation and servicing to protect the integrated control module from dam- age. By putting the furnace, the control, and the person at the same electrostatic potential, these steps will help avoid expos- ing the integrated control module to electrostatic discharge. -
Page 6: Eatures
VEHICLE RODUCT ESCRIPTION EATURES This furnace is a part of the ComfortNet™ family of products. The CTK0* ComfortNet thermostat kit allows this furnace to be installed as part of a digitally communicating system. The ComfortNet system provides automatic airflow configuration, enhanced setup features, and enhanced diagnostics. -
Page 7: Location Requirements Andc
Combustion and Ventilation Air Requirements section. • The furnace must be level. If the furnace is to be set on a floor that may become wet or damp at times, the furnace should be supported above the floor on a concrete base sized approximately 1-1/2"... -
Page 8: Clearances And Accessibility
• If the furnace is used in connection with a cooling unit, install the furnace upstream or in parallel with the cooling unit coil. Premature heat exchanger failure will result if the cooling unit coil is placed ahead of the furnace. -
Page 9: Furnace Suspension
(18") above the floor and is protected or located to prevent physical damage by vehicles. A gas furnace must not be installed di- rectly on carpeting, tile, or other combustible materials other than wood flooring. -
Page 10: Requirements
If this furnace is to be installed in the same space with other gas appliances, such as a water heater, ensure there is an adequate supply of combustion and ventilation air for the other appliances. -
Page 11: Combustion And Ventilation Air Exterior Masonry Chimneys
13. Restore power to furnace. Counterflow units are shipped with the induced draft blower discharging from the top of the furnace. (“Top” as viewed for a counterflow installation.) Vent the furnace in accordance with the National Fuel Gas Code NFPA54/ANSI Z223.1-latest edition. In Canada, vent the furnace in accordance with the national standard of Canada, CAN/CSA B149.1 and CAN/CSA B149.2- latest editions and... -
Page 12: Check 2 - Any Solid Orl
Proper Chimney Termination? (Check 1) Chimney channel free of solid and liquid fuel appliances? (Check 2) Crown in good condition (Check 3) Cleanout free of debris? (Check 4) Liner in good condition? (Check 5) Dilution air available? (Check 6) Complete the installation. -
Page 13: Check 3 - Chimney Crown
Liquid fuel appliances include oil furnaces, oil-fired boilers and oil-fired water heaters. Appliances which burn propane (sometimes referred to as LP (liquefied petroleum)) gas are considered gas-fired appliances. 3 - C HECK HIMNEY ROWN ONDITION Damage from condensate usually shows up first in the crown. If any of the following trouble signs are present, the condition of the crown is not satisfactory: a) Crown leaning... -
Page 14: Hange Enting
Do not vent an 80+ Furnace inside of a metal liner with other appli- ances vented outside the liner. Alternatively, the homeowner may agree to discontinue use of the fireplace (solid fuel appliance). -
Page 15: Electrical Connections
Wires are color coded for identification purposes. Re- fer to the wiring diagram for wire routings. If any of the original wire as supplied with the furnace must be replaced, it must be replaced with wiring material having a temperature rating of at least 105°... -
Page 16: Junction Box Relocation
PLUGS Line voltage connections can be made through either the right or left side panel. The furnace is shipped configured for a right side electrical connection. To make electrical connections through the opposite side of the furnace, the junction box must be relocated to the left side prior to making electrical connec- tions. -
Page 17: Single -Stage Heatingt
The application of a single- stage thermostat offers a timed transition from low to high fire. The furnace will run on low stage for a fixed period of time before stepping up to high stage to satisfy the thermostat’s call for heat. -
Page 18: Fossil Fuel Applications
Unused OSSIL PPLICATIONS This furnace can be used in conjunction with a heat pump in a fossil fuel application. A fossil fuel application refers to a com- bined gas furnace and heat pump installation which uses an outdoor temperature sensor to determine the most cost effi- cient means of heating (heat pump or gas furnace). -
Page 19: Volt Humidifier
Maximum: 13.0" w.c. If converting to LP gas, it is recommended that an LPLP0* kit also be installed. The use of this kit will prevent the furnace from firing when the LP gas supply pressure is too low to sup- port proper combustion. -
Page 20: Upflow Installations
In some cases, the installer may also need to supply a transition piece from 1/2" to another pipe size. When the gas piping enters through the left side of the furnace, the installer must supply the following fittings (starting from the gas valve): •... -
Page 21: Counterflow Installations
OUNTERFLOW NSTALLATIONS When the gas piping enters through the left side of the furnace, the installer must supply a straight pipe and a 90 degree elbow to reach the exterior of the furnace. A ground joint union, drip leg and manual shutoff valve must also be supplied by the installer. -
Page 22: Checking Duct Static
1,039 1,559 1,417 the furnace, the return air shall also be handled by a duct sealed 1,275 to the furnace casing and terminating outside the space con- 1,066 taining the furnace. -
Page 23: Upright Installations
A new home may require more frequent replacement until all construction dust and dirt is removed. Circulating air filters are to be installed in the return air duct external to the furnace cabinet. MINIMUM FILTER SIZES for DISPOSABLE FILTERS FURNACE INPUT (BTU/hr) DISPOSABLE NOMINAL 300 F.P.M. -
Page 24: Gas Supply Pressurem
SPECIFIED UNIT FIRED APPLIANCES OUTLET 1. Turn OFF gas to furnace at the manual gas shutoff valve external to the furnace. High Fire Regulator Outlet Pressure Boss Inlet Pressure Boss Regulator Vent Gas Valve On/Off... -
Page 25: Gas Manifold Pressurem
White-Rodgers 36G54 gas valve, then use the 36G Valve Pressure Check Kit, Goodman Part No. 0151K00000S. 3. Turn ON the gas supply and operate the furnace and all other gas consuming appliances on the same gas supply line. -
Page 26: Gas Input Rate Measurement
3. Calculate the number of seconds per cubic foot (sec/ft 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. - Page 27 12. If the airflow being delivered is 1275, the display indicates 13. 1. Determine the tonnage of the cooling system installed with the furnace. If the cooling capacity is in BTU/hr divide it by 12,000 to convert capacity to TONs. Example: Cooling Capacity of 30,000 BTU/hr.
- Page 28 Switch Bank: S3 DIP Switch No. Cooling Airflow (*Indicates factory setting) Switch Bank: S3 DIP Switch No. Adjus t Taps Normal* -10% Normal (*Indic ates factory setting) • Profile D ramps up to 50% of the demand for 1/2 minute, then ramps to 85% of the full cooling demand airflow and operates there for approximately 7 1/2 minutes.
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Page 29: Blower Heat Off Delay
Conditioner For example, assume the system is an air conditioner matched with a furnace. With a call for low stage cooling, the air condi- tioner will calculate the system’s low stage cooling airflow demand. The air conditioner will then send a fan request along with the low stage cooling airflow demand to the furnace. -
Page 30: Fossil Fuel Applications
OSSIL PPLICATIONS This furnace can be used in conjunction with a ComfortNet™ com- patible heat pump in a fossil fuel application. A fossil fuel applica- tion refers to a combined gas furnace and heat pump installation which uses an outdoor temperature sensor to determine the most cost efficient means of heating (heat pump or gas furnace). -
Page 31: Comfort Net ™ Systema
IAGNOSTICS Accessing the furnace’s diagnostics menu provides ready ac- cess to the last six faults detected by the furnace. Faults are stored most recent to least recent. Any consecutively repeated fault is stored a maximum of three times. Example: A clogged return air filter causes the furnace limit to trip repeatedly. - Page 32 Submenu Item Mode (MODE) CFM (CFM) CONFIGURATION Indication (for Display Only; not User Modifiable) Displays the number of furnace heating stages Displays the furnace input rate in kBtu/hr Displays the furnace indoor blower motor horsepower DIAGNOSTICS Indication/User Modifiable Options Most recent furnace fault...
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Page 33: Network Troubleshooting
NOTE: Refer to the instructions accompanying the CT compatible outdoor AC/HP unit for troubleshooting information. Refer to the Troubleshooting Chart in in the back of this manual for a listing of possible furnace error codes, possible causes and corrective actions. Comments... -
Page 34: Normal Sequence Of Operation Power U P
• display LED’s. • Integrated control module monitors safety circuits continuously. • Furnace awaits call from thermostat. Dual 7-segment LED’s display O O O O O while awaiting call from thermostat. Indication Possible Causes • Normal condition • None • Communications •... -
Page 35: Cooling Mode
Electronic air cleaner terminal is energized with circulator blower. • Furnace is now operating on the specified stage called for by the two-stage thermostat. • Furnace runs, integrated control module monitors safety circuits continuously. -
Page 36: Safety Circuit Description
Use the following precautions during furnace installation and servicing to protect the integrated control module from dam- age. By putting the furnace, the control, and the person at the same electrostatic potential, these steps will help avoid expos- ing the integrated control module to electrostatic discharge. -
Page 37: Fault Recall
It is characterized by a non-functioning furnace and a E E E E E 0 0 0 0 0 code dis- played on the dual 7-segment display. If the furnace is in “lock- out”, it will (or can be) reset in any of the following ways. -
Page 38: Burners
URNERS Visually inspect the burner flames periodically during the heat- ing season. Turn on the furnace at the thermostat and allow several minutes for flames to stabilize, since any dislodged dust will alter the flames normal appearance. Flames should be stable, quiet, soft, and blue (dust may cause orange tips but they must not be yellow). -
Page 39: Troubleshooting Chart
ROUBLESHOOTING HART... - Page 40 ROUBLESHOOTING HART...
- Page 41 ROUBLESHOOTING HART...
- Page 42 ROUBLESHOOTING HART...
- Page 43 ROUBLESHOOTING HART...
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Page 44: 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 45: Air Flow Data
Speed Selection Dip Switches Cool Adjust Profile Selection Selection Selection Switches Switches Switches OFF OFF OFF OFF OFF ON OFF Profiles Pre-Run Short-Run ------- -------- ------- 30 sec/50% ------- 7.5 min/82% 30 sec/50% 7.5 min/82% To set airflow: (1) Select model and desired high stage cooling airflow. -
Page 46: Mvc8, *Dvc8 W
2. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING. 3. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A TEMPERATURE RATING OF AT LEAST 105°C. USE COPPER CONDUCTORS ONLY. - Page 47 THIS PAGE LEFT INTENTIONALLY BLANK...
- Page 48 Goodman Manufacturing Company, L.P. 5151 San Felipe, Suite 500, Houston, TX 77056 www.goodmanmfg.com 2011 - 2012 Goodman Manufacturing Company, L.P. ©...