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Installation Instructions
for *MEC80* & *CEC80
Gas Furnace
CATEGORY I
CATÉGORIE I
These furnaces comply with requirements
embodied in the American National Standard
/
National
Standard
Z21.47·CSA-2.3 Gas Fired Central Furnaces.
As a professional installer you have an obligation to know
the product better than the customer. This includes all safety
precautions and related items.
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 to be able to instruct a
customer in its safe use.
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, the precautions listed herein take
precedence.
Our continuing commitment to quality products may mean a change in specifications without notice.
IOG-2022B
08/2021
of
Canada
ANSI
Installer:
Affix all manuals
adjacent to the unit.
19001 Kermier Rd. Waller, Tx 77484
www.goodmanmfg.com • www.amana-hac.com
© 2019-2021 Goodman Manufacturing Company, L.P.
is a registered trademark of Maytag Corporation or its related companies and is used under license.
Safety Considerations ..................................................2
Product Application ......................................................4
Masonry Chimneys .......................................................10
Electrical Connections ..............................................10
Gas Supply and Piping ................................................. 11
Circulating Air .............................................................14
Electrical ......................................................................16
Circulating Air & Filters ............................................20
Airflow Tables .............................................................23
Wiring Diagram .............................................................40
Maintenance ..................................................................41
Before Leaving an Installation .................................41
Repair and Replacement Parts ..................................41
Start-up Checklist .......................................................42
Only personnel that have been trained to install, adjust,
service or repair(hereinafter, "service") the equipment
specified in this manual should service the equipment.
The manufacturer will not be responsible for any injury
or property damage arising from improper service or
service procedures. If you service this unit, you assume
responsibility for any injury or property damage which may
result. In addition, in jurisdictions that require one or more
licenses to service the equipment specified in this manual,
only licensed personnel should service the equipment.
Improper installation, adjustment, servicing or repair of
the equipment specified in this manual, or attempting to
install, adjust, service or repair the equipment specified in
this manual without proper training may result in product
damage, property damage, personal injury or death.
AS A SAFETY PRECAUTION.
NOTE: Please contact your distributor or our website for
*
the applicable Specification Sheet referred to in this manual.
80% HEX
All rights reserved.

TABLE OF CONTENTS

WARNING
RECOGNIZE THIS SYMBOL
DO NOT LIFT
PRODUCT USING
HEAT EXCHANGER

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Summary of Contents for Goodman MEC80 Series

  • Page 1: Table Of Contents

    Our continuing commitment to quality products may mean a change in specifications without notice. 19001 Kermier Rd. Waller, Tx 77484 www.goodmanmfg.com • www.amana-hac.com © 2019-2021 Goodman Manufacturing Company, L.P. IOG-2022B is a registered trademark of Maytag Corporation or its related companies and is used under license.
  • Page 2: Safety Considerations

    SAFETY CONSIDERATIONS Always install a furnace to operate within the furnace’s intended temperature-rise range with a duct system which has external static pressure within the allowable range, as Adhere to the following warnings and cautions when specified on the furnace rating plate and OPERATIONAL installing, adjusting, altering, servicing, or operating the CHECKS section of these instructions.
  • Page 3 RISQUE D'EMPOISONNEMENT AU MONOXYDE DE CARBONE Advertencia especial para la instalación de calentadores ó manejadoras de aire en áreas cerradas como estacionamientos ó cuartos de servicio. Cette ventilation est nécessaire pour éviter le danger d'intoxication Las emisiones de monóxido de carbono pueden circular a través au CO pouvant survenir si un appareil produisant du monoxyde del aparato cuando se opera en cualquier modo.
  • Page 4: Product Application

    PRODUCT APPLICATION • Copy of the inspection report issued by carrier’s representative at the time damage is reported to carrier. This furnace is primarily designed for residential home- heating applications. It is NOT designed or certified for use The carrier is responsible for making prompt inspection of in mobile homes, trailers or recreational vehicles.
  • Page 5: Location Requirements & Considerations

    • All furnace operating conditions (including ignition, In the USA, this furnace MUST be installed in accordance input rate, temperature rise and venting) are verified with the latest edition of the ANSI Z223.1 booklet entitled by a qualified person according to these installation “National Fuel Gas Code”...
  • Page 6 • Ensure upflow or horizontal furnaces are not installed • Counterflow installation over a combustible floor. directly on carpeting, or any other combustible material. If installation over a combustible floor becomes The only combustible material allowed is wood. necessary, use an accessory subbase (see •...
  • Page 7 Installation Positions WARNING *MEC80 model furnaces may be installed vertically (upflow) or horizontally with left or right side down. *CEC80 CARBON MONOXIDE POISONING HAZARD model furnaces may be installed vertically (downflow) or Failure to follow the steps outlined below for each horizontally with left or right side down.
  • Page 8: Combustion & Ventilation Air Requirements

    If resizing is required on any portion of the venting system, AVERTISSEMENT use the appropriate table in the latest edition of the National Fuel Gas Code ANSI Z223.1. RISQUE D'INTOXICATION AU MONOXYDE DE CARBONE Si les étapes décrites ci-dessous ne sont pas suivies pour Thermostat Location chacun des appareils raccordés au système de ventilation In an area having good air circulation, locate the thermostat...
  • Page 9 Most homes will require outside air be supplied to the furnace side of the cabinet. When rotating the inducer a chimney area by means of ventilation grilles or ducts connecting transition bottom kit (part # 4053501S) is needed for proper directly to the outdoors or spaces open to the outdoors such alignment of the inducer outlet and the vent exit hole in the as attics or crawl spaces.
  • Page 10: Masonry Chimneys

    WARNING WARNING Never allow the products of combustion, including carbon HIGH VOLTAGE monoxide, to enter the return ductwork or circulation air To avoid risk of injury, electrical shock supply. or death, the furnace must be electrically grounded in accordance with local codes or MASONRY CHIMNEYS in their absence, with the latest edition of the National Electric Code.
  • Page 11: Gas Supply And Piping

    Junction Box Relocation Inlet gas supply pressures must be maintained within the ranges specified in the following table. The supply pressure WARNING must be constant and available with all other household gas fired appliances operating. The minimum gas supply Edges of sheet metal holes may be sharp. Use gloves as a pressure must be maintained to prevent unreliable ignition.
  • Page 12 Propane Gas Conversion • Use pipe joint compound on male threads only. Pipe joint compound must be resistant to the action of the WARNING fuel used. • Use ground joint unions. Possible property damage, personal injury or death may • Install a drip leg to trap dirt and moisture before it can occur if the correct conversion kits are not installed.
  • Page 13 A ground joint union, drip leg, and manual shutoff valve Disconnect this unit and shutoff valve from the gas supply must also be supplied by the installer. In some cases, the piping system before pressure testing the supply piping installer may also need to supply a transition piece from 1/2” system with pressures in excess of 1/2 psig (3.48 kPa).
  • Page 14: Circulating Air

    Propane Gas Piping Charts combustion air or draft when a central return is used, a connecting duct must be installed between the unit and the Sizing Between First and Second Stage Regulator* utility room wall. A room, closet, or alcove must not be used Maximum Propane Capacities listed are based on 2 psig pressure drop at 10 psig setting.
  • Page 15 2. Measure the static pressure of the supply duct. Horizontal Installations (Positive Pressure) Filters must be installed in either the central return register 3. The difference between the two numbers is .4” w.c. or in the return air duct work. EXAMPLE: Circulation Air Filters static reading from return duct = -.1”...
  • Page 16: Electrical

    Upflow / Horizontal Minimum Recommended Filter Size^ Models *MEC80403B* 1 - 16 X 25 Side or 1 - 14 X 24 Bottom Return Furnace *MEC80603B* 1 - 16 X 25 Side or 1 - 14 X 24 Bottom Return Integrated *MEC80604B* 1 - 16 X 25 Side or 14 X 24 Bottom Return Control...
  • Page 17 Strictly follow the wiring guidelines in the fossil fuel kit If it is necessary for the installer to supply additional line installation instructions. All furnace connections must be voltage wiring to the inside of the furnace, the wiring must made to the furnace two-stage integrated control module and conform to all local codes, and have a minimum temperature the “FURNACE”...
  • Page 18 The furnace rating plate includes the approved furnace gas Consult the furnace Specification Sheet for a listing of input rating and gas types. The furnace must be equipped appropriate kits. The indicated kits must be used to insure to operate on the type of gas applied. This includes any safe and proper furnace operation.
  • Page 19 • Gas piping must be supported external to the furnace A semi-rigid connector to the gas piping can be used outside cabinet so that the weight of the gas line does not the cabinet per local codes. From the elbow, the length of distort the burner rack, manifold or gas valve.
  • Page 20: Circulating Air & Filters

    For satisfactory operation, propane gas pressure must be bottom. Flexible joints may be used for supply and return 10” WC at the furnace manifold with all gas appli ances in con nections to reduce noise transmission. To prevent the operation. Maintaining proper gas pressure depends on blower from inter fering with combustion air or draft when a three main factors: central return is used, a connecting duct must be installed...
  • Page 21 The temperature rise of the furnace must be within the 2. Remove the burner compartment door and move the temperature rise range listed on the furnace rating plate. furnace gas valve manual control to the OFF position. 3. Close the manual gas shutoff valve external to the furnace.
  • Page 22 NOTE: If using the inlet pressure tap on the White- Run High Fire Rodgers 36J54 gas valve, then use the 36G/J Valve NOTE: the Cool Cloud phone application be used Pressure Check Kit, Part No. 0151K00000S. to assist with all functional tests. See the quick start guide section for details.
  • Page 23: Airflow Tables

    AIRFLOW TABLES GCEC800403AN PCBBF139 *CEC800403A* - COOLING DIP Switches STATIC S1-1 S1-2 S1-3 T STAT CALL OFF OFF OFF* 1348 1294 1261 1250 1229 1233 1205 1182 ON OFF OFF ON ON OFF 1348 1294 1261 1250 1229 1233 1205 1182 OFF ON OFF OFF OFF ON...
  • Page 24 AIRFLOW TABLES GCEC800603AN PCBBF139 *CEC800603A*- COOLING DIP Switches STATIC S1-1 S1-2 S1-3 T STAT CALL 1160 1102 1055 1017 OFF OFF OFF* 1411 1356 1313 1272 1235 1198 1162 1127 ON OFF OFF 1160 1102 1055 1017 ON ON OFF 1411 1356 1313...
  • Page 25 AIRFLOW TABLES GCEC800603BN PCBBF139 *CEC800603B* - COOLING DIP Switches STATIC S1-1 S1-2 S1-3 T STAT CALL 1223 1144 1081 OFF OFF OFF* 1395 1332 1272 1207 1136 1074 1007 1032 ON OFF OFF 1223 1144 1081 1032 ON ON OFF 1395 1332 1272...
  • Page 26 AIRFLOW TABLES GCEC800804BN PCBBF139 *CEC800804B* - COOLING DIP Switches STATIC S1-1 S1-2 S1-3 T STAT CALL 1596 1553 1512 1491 1450 1411 1388 1347 OFF OFF OFF* 1757 1713 1691 1664 1625 1588 1552 1522 ON OFF OFF 1596 1553 1512 1491 1450...
  • Page 27 AIRFLOW TABLES GCEC800805CN PCBBF139 *CEC800805C* - COOLING DIP Switches STATIC S1-1 S1-2 S1-3 T STAT CALL 1782 1744 1715 1700 1660 1619 1579 1510 OFF OFF OFF* 2145 2089 2058 2036 2020 2000 1971 1935 1171 ON OFF OFF 1782 1744 1715 1700...
  • Page 28 AIRFLOW TABLES GMEC-GCEC801005CN PCBBF139 **EC801005C* - COOLING DIP Switches STATIC S1-1 S1-2 S1-3 T STAT CALL 1820 1769 1726 1685 1642 1603 1557 1521 OFF OFF OFF* 2235 2185 2139 2108 2076 2032 2000 1964 ON OFF OFF 1820 1769 1726 1685 1642...
  • Page 29 AIRFLOW TABLES GCEC800804BN PCBBF139 *CEC800403A* - COOLING DIP Switches STATIC S1-1 S1-2 S1-3 T STAT CALL OFF OFF OFF* 1348 1294 1261 1250 1229 1233 1205 1182 ON OFF OFF ON ON OFF 1348 1294 1261 1250 1229 1233 1205 1182 OFF ON OFF OFF OFF ON...
  • Page 30 AIRFLOW TABLES GMEC800403AN PCBBF139 *MEC800403A* - COOLING DIP Switches STATIC S1-1 S1-2 S1-3 T STAT CALL 1138 1093 1057 1016 OFF OFF OFF* 1367 1321 1286 1255 1223 1190 1160 1133 ON OFF OFF 1138 1093 1057 1016 ON ON OFF 1367 1321 1286...
  • Page 31 AIRFLOW TABLES GMEC800603AN PCBBF139 *MEC800603A* - COOLING DIP Switches STATIC S1-1 S1-2 S1-3 T STAT CALL 1151 1091 1050 1007 OFF OFF OFF* 1389 1341 1295 1258 1221 1176 1140 1105 ON OFF OFF 1151 1091 1050 1007 ON ON OFF 1389 1341 1295...
  • Page 32 AIRFLOW TABLES GMEC800603BN PCBBF139 *MEC800603B* - COOLING DIP Switches STATIC S1-1 S1-2 S1-3 T STAT CALL 1330 1280 1229 1187 1146 1103 1061 1018 OFF OFF OFF* 1465 1416 1382 1340 1299 1278 1257 1219 ON OFF OFF 1330 1280 1229 1187 1146...
  • Page 33 AIRFLOW TABLES GMEC800603BN PCBBF139 *MEC800803B* - COOLING DIP Switches STATIC S1-1 S1-2 S1-3 T STAT CALL 1160 1107 1060 1011 OFF OFF OFF* 1231 1185 1136 1093 1049 1004 ON OFF OFF 1160 1107 1060 1011 ON ON OFF 1231 1185 1136 1093...
  • Page 34 AIRFLOW TABLES GMEC800804BN PCBBF139 *MEC800804B* - COOLING DIP Switches STATIC S1-1 S1-2 S1-3 T STAT CALL 1574 1521 1481 1439 1398 1374 1335 1295 OFF OFF OFF* 1782 1726 1684 1645 1610 1574 1542 1506 ON OFF OFF 1574 1521 1481 1439 1398...
  • Page 35 AIRFLOW TABLES GMEC800804CN PCBBF139 *MEC800804C* - COOLING DIP Switches STATIC S1-1 S1-2 S1-3 T STAT CALL 1466 1399 1347 1290 1230 1170 1112 1054 OFF OFF OFF* 1904 1832 1777 1727 1678 1630 1579 1523 ON OFF OFF 1466 1399 1347 1290 1230...
  • Page 36 AIRFLOW TABLES GMEC800805DN PCBBF139 *MEC800805D* - COOLING DIP Switches STATIC S1-1 S1-2 S1-3 T STAT CALL 1698 1621 1553 1497 1437 1393 1328 1270 OFF OFF OFF* 2266 2202 2143 2090 2040 1995 1945 1896 1088 ON OFF OFF 1698 1621 1553 1497...
  • Page 37 AIRFLOW TABLES GMEC800805CN PCBBF139 *MEC800805C* - COOLING DIP Switches STATIC S1-1 S1-2 S1-3 T STAT CALL 1583 1536 1515 1478 1434 1383 1317 1265 OFF OFF OFF* 2145 2089 2058 2036 2020 2000 1971 1935 1171 ON OFF OFF 1583 1536 1515 1478...
  • Page 38 AIRFLOW TABLES GMEC801004CN PCBBF139 *MEC801004C* - COOLING DIP Switches STATIC S1-1 S1-2 S1-3 T STAT CALL 1265 1204 1146 1091 1034 OFF OFF OFF* 1598 1547 1509 1464 1417 1387 1340 1295 ON OFF OFF 1265 1204 1146 1091 1034 ON ON OFF 1598 1547...
  • Page 39 AIRFLOW TABLES GMEC801205DN PCBBF139 *MEC801205D* - COOLING DIP Switches STATIC S1-1 S1-2 S1-3 T STAT CALL 1627 1566 1520 1470 1420 1398 1391 1343 OFF OFF OFF* 2226 2165 2126 2083 2048 2011 1983 1945 ON OFF OFF 1627 1566 1520 1470 1420...
  • Page 40: Wiring Diagram

    WIRING DIAGRAM WARNING:DISCONNECT POWER BEFORE SERVICING. WIRING TO UNIT MUST BE PROPERLY POLARIZED AND GROUNDED. ECM MTR HARNESS CIRCULATOR BLOWER EQUIPMENT GND FIELD GND FIELD SPLICE SWITCH (TEMP.) IGNITER SWITCH (PRESS.) OVERCURRENT PROT. DEVICE JUNCTION TERMINAL INTERNAL TO INTEGRATED CONTROL PLUG CONNECTION LOW VOLTAGE (24V) LOW VOLTAGE FIELD...
  • Page 41: Maintenance

    Maintenance 4. Turn ON electrical power to furnace. WARNING Media Air Filter or Electronic Air Cleaner Removal Follow the manufacturer’s directions for service. To avoid electrical shock, injury or death, disconnect electrical power before Burners performing any maintenance. If you must Visually inspect the burner flames periodically during the heating handle the igniter, handle with care.
  • Page 42: Start-Up Checklist

    START-UP CHECKLIST Furnace Model Number Serial Number ELECTRICAL Line Voltage (Measure L1 to N and N to Ground Voltage) L - N N - G Secondary Voltage (Measure Transformer Output Voltage) R - C Blower Amps BLOWER EXTERNAL STATIC PRESSURE Return Air Static Pressure IN.
  • Page 43 THIS PAGE IS LEFT INTENTIONALLY BLANK.
  • Page 44 You can also scan the QR code on the right to be directed to the Product Registration Page. 19001 Kermier Rd. Waller, Tx 77484 www.goodmanmfg.com • www.amana-hac.com © 2019-2021 Goodman Manufacturing Company, L.P. is a registered trademark of Maytag Corporation or its related companies and is used under license. All rights reserved.

This manual is also suitable for:

Cec80 series

Table of Contents