Goodman MH8 Installation Instructions Manual
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I
I
NSTALLATION
NSTRUCTIONS FOR
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-417A
11/2011
*M(H,S)8 / *D(H,S)8 / *HS8 / GME8 G
(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 Goodman Manufacturing Company, L.P.
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
AS
®
C
US
OR
PROPERTY
.
PROCEDURES
ASSUME
DAMAGE
LICENSE
TO
.
F
URNACE
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Table of Contents
Troubleshooting
Related Manuals for Goodman MH8
Summary of Contents for Goodman MH8
- Page 1 WHICH RESULT JURISDICTIONS REQUIRE LICENSE INSTALL SERVICE HEATING CONDITIONING EQUIPMENT 5151 San Felipe Suite 500 • Houston, TX 77056 www.goodmanmfg.com • www.amana-hac.com IO-417A 11/2011 © 2011 Goodman Manufacturing Company, L.P.
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Page 2: Table Of Contents
Table of Contents ...................... 6 DDITIONAL AFETY ONSIDERATIONS ........................... 6 HIPPING NSPECTION (ESD) P ..................6 LECTROSTATIC ISCHARGE RECAUTIONS ..........................6 NSTALLER ..............6 MPORTANT OTE TO THE WNER REGARDING RODUCT ARRANTY ..........................7 RODUCT PPLICATION ....................8 OCATION EQUIREMENTS AND ONSIDERATIONS ...................... - Page 3 Table of Contents ........................22 IRCULATING IR AND ILTERS ........................22 UCTWORK ........................22 HECKING TATIC ..........23 ILTERS ECTION EFORE NSTALLING ETURN UCTWORK ........................23 PRIGHT NSTALLATIONS ........................23 IRCULATION ILTERS ........................ 23 ORIZONTAL NSTALLATIONS ) ................23 EQUENCE OF PERATION NTEGRATED GNITION...
- Page 4 Table of Contents ............................32 AINTENANCE ........................... 33 NNUAL INSPECTION ............................33 ILTERS ......................... 33 ILTER AINTENANCE ..........................33 ILTER EMOVAL ................. 33 NDUCED RAFT AND IRCULATOR LOWER OTORS ) ..................33 LAME ENSOR UALIFIED ERVICER ) ..................... 33 GNITER UALIFIED ERVICER ............................
- Page 5 AFETY RECAUTIONS Adhere to the following warnings and cautions when installing, adjusting, altering, servicing, or operating the furnace. To ensure proper installation and operation, thoroughly read this manual for specifics pertaining to the installation and application of this product. WARNING ...
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Page 6: Dditional Afety
Goodman brand prod- ® Use the following precautions during furnace installation and ucts, visit www.goodmanmfg.com, and for Amana brand prod- ® servicing to protect the integrated control module from dam- ucts, visit www.amana-hac.com. -
Page 7: Product Application
100% outside air is provided for combustion air Product limited warranty certificates for models currently in pro- requirements during construction. Temporary ducting duction can be viewed at www.goodmanmfg.com or www.amana- can be used. hac.com. If your model is not currently in production or does... -
Page 8: Onsiderations
OCATION EQUIREMENTS AND ONSIDERATIONS A copy of the CAN/CSA B149 Installation Codes can also be • Ensure the temperature of the return air entering the obtained from: furnace is between 55°F and 100°F when the furnace CSA International is heating. 178 Rexdale Boulevard •... -
Page 9: Location Requirements Andc
OCATION EQUIREMENTS AND ONSIDERATIONS • Do not connect this furnace to a chimney flue that VEN T TO P SID ES FR O N T B AC K B1-V EN T S IN G LE (P LE N U M ) serves a separate appliance designed to burn solid 1"... -
Page 10: Xisting Urnace Emoval
& V OMBUSTION ENTILATION ATEGORY ENTING EQUIREMENTS • Drafts, or dead spots behind doors, in corners, or under XISTING URNACE EMOVAL cabinets. NOTE: When an existing furnace is removed from a venting • Hot or cold air from registers. system serving other appliances, the venting system may be •... -
Page 11: Ategoryi
XTERIOR MASONRY HIMNEYS ATEGORY URNACES Code NFPA 54/ANSI Z223.1 or CAN/CSA B149 Installation Under some conditions, larger vents than those shown above Codes or applicable provisions of the local building codes for may be required or allowed. When an existing furnace is re- determining the combustion air requirements for the appliances. -
Page 12: Exterior Masonry Chimneys
XTERIOR MASONRY HIMNEYS ATEGORY URNACES draft blower to properly orient the assembly. NOTE: If WARNING the pipe section is less than 18”, then attach it directly to the chimney top on 3 sides and feed it through the ... -
Page 13: Check 1 - P
XTERIOR MASONRY HIMNEYS ATEGORY URNACES If the chimney does not meet these termination requirements, Proper Chimney but all other requirements in the checklist can be met, it may Termination? be possible for a mason to extend the chimney. If this will not (Check 1) be practical, see Fix 1. -
Page 14: Heck Ilution Ir
XTERIOR MASONRY HIMNEYS ATEGORY URNACES Liquid fuel appliances include oil furnaces, oil-fired boilers and Next, use a flashlight and small mirror to sight up the liner. B oil-fired water heaters. vent must be supported so as to not come into direct contact with the chimney walls or tile liner. -
Page 15: Heck Omplete The 1 - Liner Termination
XTERIOR MASONRY HIMNEYS ATEGORY URNACES 7 - C 3 - R HECK OMPLETE THE NSTALLATION EBUILD THE ROWN If Checks 1 through 6 have been satisfactory, and the liner is an If the chimney crown is damaged, a qualified mason must re- acceptable size as determined by the tables in National Fuel pair it in accordance with nationally recognized building codes Gas Code NFPA 54/ANSI Z223.1 - latest edition and in the... -
Page 16: Electrical Connections
LECTRICAL ONNECTIONS For sizing of flexible liners, see Note 22 and the tables in the CAUTION National Fuel Gas Code NFPA 54/ANSI Z223.1 - latest edition and in the National Standard of Canada, CAN/CSA B149.1 and ... -
Page 17: Volt Thermostatw
LECTRICAL ONNECTIONS A heat pump thermostat with two stages of heat is required to WARNING properly use a furnace in conjunction with a heat pump. Refer to the fossil fuel kit installation instructions for additional ther- HIGH VOLTAGE ! mostat requirements. ... -
Page 18: Lectronic Ir Leaner
UPPLY AND IPING 1. Install the field supplied relay on the control mount- • Record the reading. ing panel near the furnace ignition control. The relay • Divide this reading by 10. should be installed such that the motor leads will •... -
Page 19: Gas Supply And Piping
UPPLY AND IPING 24 V High altitude installations may require both a pressure switch UMIDIFIER and an orifice change. These changes are necessary to com- The yellow wire connected to the I.D. Blower pressure switch pensate for the natural reduction in the density of both the gas is powered anytime the pressure switch is closed and provides 24 VAC humidifier control. -
Page 20: Propane Gas Conversion Gas Piping Connections
UPPLY AND IPING Contact your distributor for a tabular listing of appropriate • Install a 1/8" NPT pipe plug fitting, accessible for test manufacturer’s kits for propane gas and/or high altitude instal- gage connection, immediately upstream of the gas lations. The indicated kits must be used to insure safe and supply connection to the furnace. -
Page 21: Counterflow Installations Gas Piping Checks
UPPLY AND IPING A ground joint union, drip leg, and manual shutoff valve must This unit must be isolated from the gas supply system by clos- also be supplied by the installer. In some cases, the installer ing its manual shutoff valve before pressure testing of gas sup- may also need to supply a transition piece from 1/2"... -
Page 22: Circulating Air And Filters
IRCULATING IR AND ILTERS A duct system must be installed in accordance with Standards of the National Board of Fire Underwriters for the Installation of 5 to 15 PSIG First Stage (20 PSIG Max.) Regulator Continuous Air Conditioning, Warm Air Heating and Ventilating Systems. 11"... -
Page 23: Ilters Ead His Ection
TART ROCEDURE AND DJUSTMENT nace and the cooling coil. This reading is usually taken by ILTERS ECTION EFORE NSTALLING removing the “A” shaped block off plate from the end on the ETURN UCTWORK coil; drilling a test hole in it and reinstalling the block off plate. Take a duct static reading at the test hole. -
Page 24: Heating Mode
TART ROCEDURE AND DJUSTMENT • • Integrated ignition control monitors safety circuits Circulator blower is energized on low heat speed following continuously. a fixed thirty second blower on delay. Electronic air cleaner terminals are energized with circulator blower. • Furnace awaits call from thermostat. •... -
Page 25: Fan Only Mode
TART ROCEDURE AND DJUSTMENT 3. Set the room thermostat to the lowest possible setting. 4. Remove the burner compartment door. The normal operational sequence in fan only mode is as fol- lows: NOTE: This furnace is equipped with an ignition device which •... - Page 26 TART ROCEDURE AND DJUSTMENT 4. Attach a hose and manometer to the outlet pressure WARNING barb fitting (Honeywell valve) or inlet pressure boss (White- Rodgers valve). HIGH VOLTAGE ! 5. Turn ON the gas supply. ISCONNECT POWER BEFORE SERVICING...
- Page 27 TART ROCEDURE AND DJUSTMENT Common Terminal(C) High Fire Coil Terminal (HI) INLET OUTLET Low Fire Coil Terminal (LO) Gas Valve On/Off Inlet Pressure Tap Selector Switch 1/8 NPT White-Rodgers Model 36G54 (Two-Stage) Open to Atmosphere High Fire Regulator Outlet Adjust Regulator Pressure Boss Vent...
- Page 28 TART ROCEDURE AND DJUSTMENT 4. Attach a hose and manometer to the outlet pressure Gas Line barb fitting (Honeywell valve) or outlet pressure boss (White-Rodgers valve). Shutoff Valve 5. Turn ON the gas supply. 6. Turn ON power and close thermostat “R” and “W” contacts to provide a call for heat.
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Page 29: Gas Manifold Pressure Gas Input Rate Measurement Temperature Rise
TART ROCEDURE AND DJUSTMENT 3. Outlet pressure tap connections: NPUT EASUREMENT ATURAL a. Honeywell VR9205 valve: Remove the outlet pressure The gas input rate to the furnace must never be greater than boss plug. Install an 1/8" NPT hose barb fitting into that specified on the unit rating plate. -
Page 30: Adjustment
TART ROCEDURE AND DJUSTMENT 3. Relocate desired motor leads to the circulator blower heat and cool speed terminals on the integrated control SUPPLY module. (Terminals are identified as LO HEAT, HI HEAT and COOL (hot)) for *(M,D)H8 models and HEAT and COOL for *(M,H,D)S8 models). -
Page 31: Auxiliary Limit Control Safety Circuit Description
TART ROCEDURE AND DJUSTMENT Setting the Mode switch to “2 STG” allows the furnace to UXILIARY IMIT ONTROL operate at the furnace’s highest input AND at an input rate Auto reset limits are located on or near the blower. To access that is 75% of the highest input rate. -
Page 32: Troubleshooting
& S PERATIONAL HECKS AFETY IRCUIT ESCRIPTION OLLOUT IMITS IAGNOSTIC HART The rollout limit controls are mounted on the burner/manifold Refer to the troubleshooting chart in the Appendix for assis- assembly and monitor the burner flame. They are manual- tance in determining the source of unit operational problems. reset, temperature sensors. -
Page 33: Maintenance
& M ROUBLESHOOTING AINTENANCE NNUAL INSPECTION ILTER EMOVAL The furnace should be inspected by a qualified installer, or ser- Depending on the installation, differing filter arrangements can vice agency at least once per year. This check should be per- be applied. Filters can be installed in either the central return formed at the beginning of the heating season. -
Page 34: Cleaning (Qualified Servicer Only )
& M ROUBLESHOOTING AINTENANCE LEANING UALIFIED ERVICER EPAIR AND EPLACEMENT ARTS • 1. Shut off electric power and gas supply to the furnace. When ordering any of the listed functional parts, be sure to provide the furnace model, manufacturing, and serial 2. -
Page 35: Component Identification
OMPONENT DENTIFICATION Tubular Heat Exchanger Pressure Switch Flue Pipe Connection Induced Draft Blower (Chimney Transition Top Shipped Loose) Gas Line Entrance Gas Valve Rollout Limit Junction Box Wiring Harness Grommet Gas Manifold Gas Line Entrance (Alternate) Inshot Burner Transformer Circulator Blower Blower Door Interlock Switch Integrated Control Module... - Page 36 OMPONENT DENTIFICATION Inshot Burner Tubular Heat Exchanger Rollout Limit Gas Manifold Induced Draft Blower Gas Valve Gas Line Entrance (Alternate) Junction Box Wiring Harness Grommet Gas Line Entrance Flue Pipe Connection Pressure Switch (Chimney Transition Top Shipped Loose) Transformer Integrated Control Module Circulator Blower Blower Door Interlock Switch...
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Page 37: Appendix
ROUBLESHOOTING HART Associated Fault Symptoms of Possible Corrective Cautions LED Code Description(s) Abnormal Operation Action & Notes Causes • Turn power OFF • Assure 115 and 24 volt • Furnace fails to operate. NONE • No 115 volt power to •... - Page 38 ROUBLESHOOTING HART Associated Fault Symptoms of Cautions Associated Corrective Action Possible Causes LED Code Description(s) Abnormal Operation & Notes LED Code • Check primary limit. • Insufficient conditioned air • Turn power OFF • Circulator blower runs • Primary limit Replace if necessary.
- Page 39 ROUBLESHOOTING HART Fault Symptoms of Associated Cautions Associated Corrective Action Possible Causes Description(s) Abnormal Operation & Notes LED Code LED Code • Improperly connected • Furnace not operating. • Problem with • Check and correct wiring • Turn power OFF igniter.
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Page 40: Blower Performance Data
LOWER ERFORMANCE *M(H/S)8 (CFM & Temperature Rise vs. External Static Pressure) EXTERNAL STATIC PR ESSURE (Inches Water Column) Tons AC Model Motor at 0.5" Heating Speed Speed As Shipped CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM HIGH 1521 ----... -
Page 41: (D/H)S8
LOWER ERFORMANCE *(D/H)S8 (CFM & Temperature Rise vs. External Static Pressure) EXTERNAL STATIC PRESSURE (Inches Water Column) Tons AC Model Motor at 0.5" Heating Speed Speed As Shipped CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM H IGH 1353 ----... -
Page 42: Gme8
LOWER ERFORMANCE GME8 (CFM & Temperature Rise vs. External Static Pressure) EXTERNAL STATIC PRESSURE (Inches Water Column) Tons AC Model Motor Speed at 0.5" Heating Speed As Shipped CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM T1 - YELLOW ---- ----... -
Page 43: (M, D, H)S8 Wiring Diagram
*(M, D, H)S8 W IRING IAGRAM Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring. -
Page 44: Gme8 Wiring Diagram
GME8 W IRING IAGRAM WARNING:DISCONNECT POWER BEFORE INTEGRATED HUMIDIFIER CONTROL MODULE SERVICING.WIRING TO UNIT MUST BE PROPERLY POLARIZED AND GROUNDED. XFMR (6) GND (8) 24 VAC MVC (9) HUMIDIFIER VALVE MVH (12) MVL (2) ID BLOWER PRESSURE AUXILIARY SWITCH LIMIT CONTROLS PS (10) AUTO 5 MIN... -
Page 45: Iagram
*(M,D)H8 W IRING IAGRAM WARNING:DISCONNECT POWER BEFORE HUMIDIFIER INTEGRATED CONTROL MODULE SERVICING.WIRING TO UNIT MUST BE PROPERLY POLARIZED AND GROUNDED. XFMR (6) GND (8) 24 VAC MVC (9) HUMIDIFIER VALVE MVH (12) MVL (2) ID BLOWER PRESSURE AUXILIARY SWITCH LIMIT CONTROLS PS (10) AUTO 5 MIN... - Page 46 THIS PAGE LEFT INTENTIONALLY BLANK...
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- Page 48 Goodman Manufacturing Company, L.P. 5151 San Felipe, Suite 500, Houston, TX 77056 www.goodmanmfg.com 2009-2010 Goodman Manufacturing Company, L.P. ©...