Installation Guide

ManualsBrandsGoodman ManualsCentral Air & Heating3.5 Ton 14 SEER 80% AFUE 80,000 BTU Gas Furnace and Air Conditioner System - Horizontal

5151 San Felipe Suite 500 • Houston, TX 77056

www.goodmanmfg.com • www.amana-hac.com

ATTENTION INSTALLING PERSONNEL

As a professional installer, you have an obligation to know the

product better than the customer. This includes all safety pre-

cautions and related items.

Prior to actual installation, thoroughly familiarize yourself with

this Instruction Manual. Pay special attention to all safety warn-

ings. 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 here take precedence.

RECOGNIZE THIS SYMBOL

AS A SAFETY PRECAUTION

NOTE: Please contact your distributor or our website listed

below for the applicable Specification Sheet referred to in this

manual.

Installer: Affix all manuals

adjacent to the unit.

These furnaces comply with requirements embodied in

the American National Standard / National Standard of

Canada ANSI Z21.47·CSA-2.3 Gas Fired Central Furnaces.

IOG-2021B

08/2019

INSTALLATION INSTRUCTIONS FOR

*MES80*N/X & *CES80*N/X GAS FURNACE

(CATEGORY I ) (CATÉGORY I )

TABLE OF CONTENTS

Safety Considerations ...................................................... 3

Additional Safety Considerations .................................... 5

Shipping Inspection .......................................................... 5

Electrostatic Discharge (ESD) Precautions ....................... 6

To The Installer .................................................................. 6

PRODUCT APPLICATION............................................................ 6

LOCATION REQUIREMENTS AND CONSIDERATIONS .................. 7

Clearances and Accessibility ........................................... 8

Installation Positions ....................................................... 8

Horizontal Installation ..................................................... 9

Furnace Suspension .......................................................... 9

Existing Furnace Removal ................................................. 9

Thermostat Location ....................................................... 10

COMBUSTION AND VENTILATION AIR REQUIREMENTS ........... 10

CATEGORY I VENTING (VERTICAL VENTING) ............................ 10

MASONRY CHIMNEYS

(CATEGORY I FURNACES ONLY) ......................................... 11

ELECTRICAL CONNECTIONS ..................................................... 12

Wiring Harness ............................................................... 12

115 Volt Line Connections .............................................. 12

Fossil Fuel Applications .................................................12

Junction Box Relocation ................................................. 12

24 Volt Thermostat Wiring ............................................. 13

115 Volt Line Connection of Accessories ........................ 13

Connection of 24 Volt Humidifier ................................... 14

24 Vac Humidifier ........................................................... 14

Twinning .......................................................................... 14

GAS SUPPLY AND PIPING ........................................................ 15

High Altitude Derate ........................................................ 15

Propane Gas Conversion ................................................15

Cancer and Reproductive Harm -

www.P65Warnings.ca.gov

PROP 65 WARNING

FOR CALIFORNIA CONSUMERS

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Summary of content (40 pages)

PAGE 1
INSTALLATION INSTRUCTIONS FOR *MES80*N/X & *CES80*N/X GAS FURNACE (CATEGORY I ) (CATÉGORY I ) These furnaces comply with requirements embodied in the American National Standard / National Standard of Canada ANSI Z21.47·CSA-2.3 Gas Fired Central Furnaces. Installer: Affix all manuals adjacent to the unit. ATTENTION INSTALLING PERSONNEL As a professional installer, you have an obligation to know the product better than the customer. This includes all safety precautions and related items.
PAGE 2
Gas Piping Connections .................................................. 15 Upflow Installations ....................................................... 16 Counterflow Installations .............................................. 16 Gas Piping Checks ........................................................... 17 Propane Gas Tanks and Piping ....................................... 17 Ductwork .........................................................................
PAGE 3
WARNING WARNING TO PREVENT PERSONAL INJURY OR DEATH DUE TO IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE, REFER TO THIS MANUAL. FOR ADDITIONAL ASSISTANCE OR INFORMATION, CONSULT A QUALIFIED INSTALLER, SERVICER AGENCY OR THE GAS SUPPLIER. GOODMAN WILL NOT BE RESPONSIBLE FOR ANY INJURY OR PROPERTY DAMAGE ARISING FROM IMPROPER SERVICE OR SERVICE PROCEDURES .
PAGE 4
WARNING HEATING UNIT SHOULD NOT BE UTILIZED WITHOUT REASONABLE, ROUTINE, INSPECTION, MAINTENANCE AND SUPERVISION. IF THE RISQUE D’INTOXICATION AU MONOXYDE DE CARBONE Si les étapes décrites ci-dessous ne sont pas suivies pour chacun des appareils raccordés au système de ventilation au moment de sa mise en marche, cela peut entraîner une intoxication au monoxyde de carbone ou la mort.
PAGE 5
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. Las emisiones de monóxido de carbono pueden circular a través del aparato cuando se opera en cualquier modo. CO can cause serious illness including permanent brain damage or death.
PAGE 6
Nursing homes, Hotels/motels, Common or office areas ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS NOTE: Discharge your body’s static electricity before touching In such applications , the furnace must be installed with the unit. An electrostatic discharge can adversely affect electrical following stipulations: • It must be installed per the installation instructions components. provided and per local and national codes.
PAGE 7
WARNING WARNING TO PREVENT POSSIBLE EQUIPMENT DAMAGE , PROPERTY DAMAGE, PERSONAL INJURY OR DEATH , THE FOLLOWING BULLET POINTS MUST BE OBSERVED WHEN INSTALLING THIS UNIT. TO PREVENT PROPERTY DAMAGE , PERSONAL INJURY OR DEATH DUE TO FIRE, DO NOT INSTALL THIS FURNACE IN A MOBILE HOME, TRAILER , OR RECREATIONAL VEHICLE.
PAGE 8
For vertical (upflow or downflow) applications, the minimum cooling coil width shall not be less than furnace width minus 1”. Additionally, a coil installed above an upflow furnace or under a counterflow furnace may be the same width as the furnace or may be one size larger than the furnace. Example: a “C” width coil may be installed with a “B” width furnace. • • • • • • • • • For upflow applications, the front of the coil and furnace must face the same direction.
PAGE 9
HORIZONTAL INSTALLATION Suspended Furnace EXISTING FURNACE REMOVAL NOTE: When an existing furnace is removed from a venting system serving other appliances, the venting system may be too large to properly vent the remaining attached appliances. Recomended Installation Positions The following vent testing procedure is reproduced from the American National Standard/National Standard of Canada for GasFired Central Furnaces ANSI Z21.47-Latest Edition, CSA-2.3-Latest Edition Section 1.23.1.
PAGE 10
Corrections must be in accordance with the latest edition of the Most homes will require outside air be supplied to the furnace National Fuel Gas Code NFPA 54/ANSI Z223.1 and/or CAN/CSA B149 area by means of ventilation grilles or ducts connecting directly to the outdoors or spaces open to the outdoors such as attics or Installation Codes. crawl spaces.
PAGE 11
Under some conditions, larger vents than those shown above may be required or allowed. When an existing furnace is removed from a venting system serving other appliances, the venting system may be too large to properly vent the remaining attached appliances. 13. Reconnect the remaining flue pipe, and the pressure switch tubing. Ensure that all wires and the pressure switch tubing is at least one inch from the flue pipe, or any other hot surface. 14. Restore power to furnace.
PAGE 12
MASONRY CHIMNEY TERMINATION Use a separate fused branch electrical circuit containing properly sized wire, and fuse or circuit breaker. The fuse or circuit breaker A masonry chimney used as a vent for gas fired equipment must must be sized in accordance with the maximum overcurrent extend at least three feet above the highest point where it passes protection specified on the unit rating plate. An electrical through the roof.
PAGE 13
After the junction box is in the desired location, use washers to A single-stage thermostat with only one heating stage can be used connect field-supplied conduit to the junction box in accordance to control this furnace. with NEC and local codes. Connect hot, neutral, and ground wires as shown in the furnace wiring diagram. The wires and ground 115 VOLT LINE VOLTAGE CONNECTION OF ACCESSORIES (HUMIDIFIER AND ELECTRONIC AIR CLEANER) screw are located in the furnace junction box.
PAGE 14
WARNING CONNECTION OF 24 VOLT HUMIDIFIER HIGH VOLTAGE ! The integrated control module single humidifier terminal “24 VHUM” is energized with 24 volts whenever the induced draft blower is energized. Connect the common side of the 24 volt humidifier to the “C” terminal of the thermostat terminal strip on the control board. TO AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK, DISCONNECT ELECTRICAL POWER BEFORE SERVICING OR CHANGING ANY ELECTRICAL WIRING.
PAGE 15
more furnace indoor blowers to operate synchronously on a common duct system. Field installed low voltage thermostat wiring, 3/16” terminals are required to make this connection. An isolating relay (24 VAC coil & N/O SPST) contacts is also required if the furnaces are not fed from the same line voltage phase. A pulsing DC signal is used to share the call for fan operation between furnaces. The duration of the pulse width determines the speed that the reading control will energize its blower motor.
PAGE 16
Natural Gas Capacity of Pipe In Cubic Feet of Gas Per Hour (CFH) Length of Nominal Black Pipe Size Pipe in Feet 1/2" 3/4" 1" 1 1/4" 10 132 278 520 1050 20 92 190 350 730 30 73 152 285 590 40 63 130 245 500 50 56 115 215 440 60 50 105 195 400 70 46 96 180 370 80 43 90 170 350 90 40 84 160 320 100 38 79 150 305 (Pressure 0.5 psig or less and pressure drop of 0.3" W.C.; Based on 0.
PAGE 17
For satisfactory operation, propane gas pressure must be 10 inch WC at the furnace manifold with all gas appliances in operation. Before placing unit in operation, leak test the unit and gas Maintaining proper gas pressure depends on three main factors: connections. 1. Vaporization rate, depending on temperature of the liquid, and “wetted surface” area of the container or containers. WARNING 2. Proper pressure regulation.
PAGE 18
Damper must be in open position when appliance main burner(s) is operating. Upflow / Horizontal Models Minimum Recommended Filter Size^ When the furnace is installed without a cooling coil, it is recommended that a removable access panel be provided in the outlet air duct. This opening shall be accessible when the furnace is installed and shall be of such a size that the heat exchanger can be viewed for visual light inspection or such that a sampling probe can be inserted into the airstream.
PAGE 19
• Furnace operates; integrated control module monitors This furnace is also equipped with a self-diagnosing electronic control module. In the event a furnace component is not operating properly, the control module LED will flash on and off in a factoryprogrammed sequence, depending on the problem encountered. This light can be viewed through the observation window in the blower access door. Refer to the Troubleshooting Chart for further explanation of the fault codes. safety circuits continuously.
PAGE 20
10. Turn on the electrical power supply to the furnace. a. White-Rodgers valve: Back inlet pressure test screw (inlet pressure Tap out one turn (counterclockwise, not more than one turn). 4. Attach a hose and manometer to the inlet pressure Tap. 5. Turn ON the gas supply. 6. Turn On power and close thermostat “R” and “W” contacts to provide a call for heat. 7. Using a leak detection solution or soap suds, to check for leaks. Bubbles forming indicate a leak. SHUT OFF GAS AND REPAIR ALL LEAKS IMMEDIATELY! 8.
PAGE 21
EXAMPLE: Installation’s gas heating (HTG) value: 1,000 BTU/ft 3 (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 This measured input must not be greater than the input indicated on the unit rating plate. 5. Turn ON gas and relight appliances turned off in step 1.
PAGE 22
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 the following section for speed changing details. 1. With clean filters in the furnace, use a draft gauge (inclined manometer) to measure the static pressure of the return duct at the inlet of the furnace. (Negative Pressure) 2. Measure the static pressure of the supply duct. (Positive Pressure) 3.
PAGE 23
ROLLOUT LIMITS The rollout limit controls are mounted on the burner/manifold assembly and monitor the burner flame. They are manual-reset, temperature sensors. This limit guards against burner flames not being properly drawn into the heat exchanger. PRESSURE SWITCHES The pressure switches are normally-open, negative air pressureactivated switches. They monitor the airflow (combustion air and flue products) through the heat exchanger via pressure taps located on the induced draft blower.
PAGE 24
ANNUAL INSPECTION INDUCED DRAFT AND CIRCULATOR BLOWER MOTORS The furnace should be inspected by a qualified installer, or service agency at least once per year. This check should be performed at the beginning of the heating season. This will ensure that all furnace components are in proper working order and that the heating system functions appropriately. Pay particular attention to the following items. Repair or service as necessary. • Flue pipe system. Check for blockage and/or leakage.
PAGE 25
6. Replace burner (opposite of removal). Ensure burners are fully seated on burner bracket and are properly aligned. Replace burner box top. Reconnect wiring. 7. Turn on electric power and gas supply to the furnace. 8. Check furnace for proper operation. Refer to “Operational Checks” section to verify burner flame characteristics. BEFORE LEAVING AN INSTALLATION • Cycle the furnace with the thermostat at least three times. Verify cooling and fan only operation.
PAGE 26
COMPONENT ID 1 Tubular Heat Exchanger 2 Pressure Switch 3 Flue Pipe Connection 4 Induced Draft Blower (Chimney Transition Top Shipped Loose) 躀 5 Gas Line Entrance 6 Gas Valve 7 Rollout Limit 8 Junction Box 9 Wiring Harness Grommet 10 Gas Manifold 16 Gas Line Entrance (Alternate) 11 Inshot Burner 12 Transformer 15 Circulator Blower 14 Blower Door Interlock Switch 13 Integrated Control Module 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Tubular Heat Exchanger Pressure Switch Flue Pipe Connection Induced Dr
PAGE 27
TROUBLESHOOTING CHART PCBBF145 CONTROL BOARDS Symptoms of Abnormal Operation Associated LED Code2 Fault Description(s) •Furnace fails to operate. NONE •No 115 volt power to furnace, or no 24 volt power to integrated control module. •Assure 115 and 24 volt •Manual disconnect switch OFF, door switch open, or 24 power to furnace integrated control volt wires improperly module. connected or loose. •Turn power OFF prior to repair. •Blown fuse or circuit breaker. •Blown fuse or circuit breaker.
PAGE 28
TROUBLESHOOTING CHART Symptoms of Abnormal Operation •Circulator blower runs continuously. No furnace operation. •Integrated control module diagnostic LED is flashing FOUR (4) flashes. Associated Associated LED Code22 LED Code 4 Fault Description(s) • Primary limit circuit is open. 4 FLASHES PCBBF145 CONTROL BOARDS Possible Causes •Integrated control module diagnostic LED is flashing FIVE (5) flashes. 5 •Check primary limit. Replace if necessary. •Turn power OFF prior to repair.
PAGE 29
TROUBLESHOOTING CHART Symptoms of Abnormal Operation Associated Associated 2 LED LED Code Code2 •Furnace not operating. •Integrated control module diagnostic LED is flashing EIGHT (8) flashes. Fault Description(s) •Problem with igniter circuit. PCBBF145 CONTROL BOARDS Possible Causes •Check and correct wiring from integrated control module to igniter. •Turn power OFF prior to repair. •Bad igniter. • Compare igniter resistance to spec. Replace if necessary. •Poor unit ground. •Poor burner ground.
PAGE 30
*MES80 & *CES980 HEATING AIRFLOW DIP MODEL SWITCHE S S2-1 , OFF OFF GCES80 / ON OFF* ACES80 / GCES800403A* ON ON VCES80 / OFF ON** DC80SE OFF OFF** GCES80 / ON OFF* ACES80 / GCES800603A* ON ON VCES80 / OFF ON** DC80SE OFF OFF** GCES80 / ON OFF* ACES80 / GCES800804B* ON ON** VCES80 / OFF ON** DC80SE OFF OFF** GCES80 / ON OFF* ACES80 / GCES800805C* ON ON** VCES80 / OFF ON** DC80SE OFF OFF** GCES80 / ON OFF* ACES80 / GCES801005C* ON ON** VCES80 / OFF ON** DC80SE 0.
PAGE 31
*MES80 & *CES80 COOLING AIRFLOW DIP SWITCHES S1-1 , S1-2 , S1-3 *CES800403A* *CES800603A* *CES800804B* *CES800805C* *CES801005C* OFF OFF OFF OFF ON ON ON OFF ON ON ON ON ON OFF OFF ON ON OFF OFF ON OFF OFF OFF ON* OFF OFF OFF OFF ON ON ON OFF ON ON ON ON ON OFF OFF ON ON OFF OFF ON OFF OFF OFF ON* OFF OFF OFF OFF ON ON ON OFF ON ON ON ON ON OFF OFF ON ON OFF OFF ON OFF OFF OFF ON* OFF OFF OFF OFF ON ON ON OFF ON ON ON ON ON OFF OFF ON ON OFF OFF ON OFF OFF OFF ON* OFF OFF OFF OFF ON ON ON OFF ON ON O
PAGE 32
*MES80 HEATING AIRFLOW MODEL GMES80 / GMES800403A* AMES80 / VMES80 GMES80 / GMES800603A* AMES80 / VMES80 GMES80 / GMES800603B* AMES80 / VMES80 GMES80 / GMES800604B* AMES80 / VMES80 GMES80 / GMES800803B* AMES80 / VMES80 GMES80 / GMES800804B* AMES80 / VMES80 GMES80 / GMES800804C* AMES80 / VMES80 GMES80 / GMES800805C* AMES80 / VMES80 GMES80 / GMES801005C* AMES80 / VMES80 GMES80 / GMES801205D* AMES80 / VMES80 *Default & Recommended ** Not Recommended DIP SWITCHE S S2-1 , OFF OFF ON OFF* ON ON OFF ON** OFF OF
PAGE 33
*MES80 CIRCULATION AIRFLOW MODEL *MES800403A* *MES800603A* *MES800603B* *MES800604B* *MES800803B* *MES800804B* *MES800804C* *MES800805C* *MES801005C* *MES801205D* DIP SWITCHES S2-3 , S2-4 OFF OFF* ON OFF OFF ON ON ON OFF OFF* ON OFF OFF ON ON ON OFF OFF* ON OFF OFF ON ON ON OFF OFF* ON OFF OFF ON ON ON OFF OFF* ON OFF OFF ON ON ON OFF OFF* ON OFF OFF ON ON ON OFF OFF* ON OFF OFF ON ON ON OFF OFF* ON OFF OFF ON ON ON OFF OFF* ON OFF OFF ON ON ON OFF OFF* ON OFF OFF ON ON ON 0.
PAGE 34
*MES80 COOLING AIRFLOW MODEL *MES800403A* *MES800603A* *MES800603B* *MES800604B* *MES800803B* DIP SWITCHES S1-1 , S1-2 , S13 OFF OFF OFF OFF ON ON ON OFF ON ON ON ON ON OFF OFF ON ON OFF OFF ON OFF OFF OFF ON* OFF OFF OFF OFF ON ON ON OFF ON ON ON ON ON OFF OFF ON ON OFF OFF ON OFF OFF OFF ON* OFF OFF OFF OFF ON ON ON OFF ON ON ON ON ON OFF OFF ON ON OFF OFF ON OFF OFF OFF ON* OFF OFF OFF OFF ON ON ON OFF ON ON ON ON ON OFF OFF ON ON OFF OFF ON OFF OFF OFF ON* OFF OFF OFF OFF ON ON ON OFF ON ON ON ON
PAGE 35
*MES80 COOLING AIRFLOW MODEL *MES800804B* *MES800804C* *MES800805C* *MES801005C* *MES801205D* DIP SWITCHES S1-1 , S1-2 , S13 OFF OFF OFF OFF ON ON ON OFF ON ON ON ON ON OFF OFF ON ON OFF OFF ON OFF OFF OFF ON* OFF OFF OFF OFF ON ON ON OFF ON ON ON ON ON OFF OFF ON ON OFF OFF ON OFF OFF OFF ON* OFF OFF OFF OFF ON ON ON OFF ON ON ON ON ON OFF OFF ON ON OFF OFF ON OFF OFF OFF ON* OFF OFF OFF OFF ON ON ON OFF ON ON ON ON ON OFF OFF ON ON OFF OFF ON OFF OFF OFF ON* OFF OFF OFF OFF ON ON ON OFF ON ON ON ON
PAGE 36
HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. *MES80 / *CES80 WIRING DIAGRAM Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
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