Goodman GMS8 Installation & Operating Instructions Manual

embodied in the American National Standard / National Standard of Canada ANSI Z21.47·CSA-2.3 Gas Fired Central Furnaces. RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION. 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. 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 ...

TO THE OWNER .............................................................................................................................................. 4 TO THE INSTALLER .......................................................................................................................................... 4 TRANSPORTATION DAMAGE ................................................................................................................................ 4 II. SAFETY ................................................................................................................................................................ ...

XII. START-UP PROCEDURE AND ADJUSTMENT ............................................................................................................ 22 FURNACE OPERATION....................................................................................................................................... 22 FURNACE START-UP ........................................................................................................................................ 22 FURNACE SHUTDOWN ...................................................................................................................................... 22 GAS SUPPLY PRESSURE M ...

OFF THE MANUAL GAS SHUTOFF VALVE EXTERNAL TO THE FURNACE BEFORE TURNING OFF THE ELECTRICAL SUPPLY. CARBON MONOXIDE POISONING HAZARD - Special Warning for Installation of Furnace or Air Handling Units in Enclosed Areas such as Garages, Utility Rooms or Parking Areas Carbon monoxide producing devices (such as an automobile, space heater, gas water heater, etc.) should not be operated in enclosed areas such as unventilated garages, utility rooms or parking areas because of the danger of carbon monoxide (CO) poisoning resulting from the exhaust emissions. If a furnace or air handl ...

DUE TO ELECTRICAL SHOCK, THE FURNACE MUST BE LOCATED TO PROTECT THE ELECTRICAL COMPONENTS FROM WATER. WARNING HEATING UNIT SHOULD NOT BE UTILIZED WITHOUT REASONABLE, ROUTINE, INSPECTION, MAINTENANCE AND SUPERVISION. IF THE BUILIDNG IN WHICH ANY SUCH DEVICE IS LOCATED WILL BE VACANT, CARE SHOULD BE TAKEN THAT SUCH DEVICE IS ROUTINELY INSPECTED, MAINTAINED AND MONITORED. IN THE EVENT THAT THE BUILDING MAYBE EXPOSED TO FREEZING TEMPERATURES AND WILL BE VACANT, ALL WATER-BEARING PIPES SHOULD BE DRAINED, THE BUILDING SHOULD BE PROPERLY WINTERIZED, AND THE WATER SOURCE CLOSED. IN THE EVE ...

installation only. GDS models are not approved for Horizontal or Upflow installations. WARNING POSSIBLE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO FIRE, EXPLOSION, SMOKE, SOOT, CONDENSTAION, ELECTRICAL SHOCK OR CARBON MONOXIDE MAY RESULT FROM IMPROPER INSTALLATION, REPAIR, OPERATION, OR MAINTENANCE OF THIS PRODUCT. WARNING TO PREVENT POSSIBLE EQUIPMENT DAMAGE, PROPERTY DAMAGE, PERSONAL INJURY OR DEATH, THE FOLLOWING BULLET POINTS MUST BE OBSERVED WHEN INSTALLING THE UNIT. Follow the instructions listed below when selecting a furnace location. Refer also to the guidelines provided in Sec ...

Protect the furnace from physical damage by vehicles. • If the furnace is installed horizontally, the furnace access doors must be vertical so that the burners fire horizontally into the heat exchanger. Do not install the unit with the access doors on the “up/top” or “down/bottom” side of the furnace. • Do not connect this furnace to a chimney flue that serves a separate appliance designed to burn solid fuel. • On Counterflow Installations, the air conditioning coil must be downstream from the heat exchanger of the furnace. • Counterflow Installation over a noncombustible floo ...

W ARNING TO AVOID PRO PERTY DAM AGE, PERSO NAL INJURY OR DEATH, SUFFICIENT FRESH AIR FO R PROPER COM BUSTION AND VENTILATION OF FLUE G ASES M UST BE SUPPLIED. M O ST HOM ES REQ UIRE OUTSIDE AIR BE SUPPLIED INTO THE FURNACE AREA. Improved construction and additional insulation in buildings have reduced heat loss by reducing air infiltration and escape around doors and windows. These changes have helped in reducing heating/cooling costs but have created a problem supplying combustion and ventilation air for gas fired and other fuel burning appliances. Appliances that pull air out of the house (clothes d ...

supplied for ventilation, including all air required for comfort and proper working conditions for personnel. (e) While all forms of building construction cannot be covered in detail, air for combustion, ventilation and dilution of flue gases for gas utilization equipment vented by natural draft normally may be obtained by application of one of the methods covered in 5.3.3 and 5.3.4. (f) Air requirements for the operation of exhaust fans, kitchen ventilation systems, clothes dryers, and fireplaces shall be considered in determining the adequacy of a space to provide combustion air requirement ...

BTU per hour of the total input rating of all appliances in the enclosure. Equipment Located in Confined Spaces; All Air from Outdoors. See 5.3.3-b. 4. When ducts are used, they shall be of the same cross- sectional area as the free area of the openings to which they connect. The minimum dimension of rectangular air ducts shall not be less than 3 inches. Furnace Water Heater Opening Chimney or Gas Vent NOTE: The single opening must have a free area of not less than one square inch per 3000 BTU of the total input rating of all equip- ment in the enclosure, but not less than the sum of ...

To rotate the induced draft blwer counterclockwise, proceed as follows: 1. Disconnect electrical power from the furnace. 2. Disconnect the induced draft blower power leads, flue pipe, and pressure switch tubing. 3. Remove the round cutout from the appropriate side of the furnace. 4. Remove and save the four screws that hold the induced draft blower to the flue collector box. 5. Turn the induced draft blower 90 degrees clockwise, or counterclockwise. The gasket is adhered to the back plate and will rotate with the blower assembly. 6. Reinstall the induced draft blower on the flue collector box, using th ...

Termination More Than 10 Feet From Ridge, Wall or Parapet CHECK 2 - ANY SOLID OR LIQUID FUEL APPLIANCES VENTED INTO THIS CHIMNEY CHANNEL Solid fuel appliances include fireplaces, wood stoves, coal furnaces, and incinerators. 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. CHECK 3 - CHIMNEY CROWN CONDITION. Damage from condensate usually shows up first in the crown. If any of the following trouble signs are present, the condition ...

e) No tile liner f) Salt staining at mortar joints. (White stains, and mortar becomes sandy and/or erodes.) For problems a, b, or c, see Fix 3. If problems d, e, or f are present, see Fix 4. IMPORTANT: It may be necessary to follow both Fix 3 and Fix 4. CHECK 4 - DEBRIS IN CLEANOUT A cleanout (dropleg) must be present such that the upper edge of the cleanout cover is at least 12 inches below the lower edge of the lowest chimney inlet opening. A chimney without a cleanout could become partially blocked by debris. If no cleanout is present, the chimney must be refined (Fix 4). Remove the cleanout cover, and exa ...

fluorine compounds. • Heavier gauge 300 and 400 series stainless steel liners were developed for use with oil or solid fuel appliances. They are not suitable for use with gas-fired appliances. Flexible liners specifically intended and tested for gas applications are listed in the UL “Gas and Oil Equipment Directory”. (UL Standard 1777). For sizing of flexible liners, see Note 22 and the tables in the National Fuel Gas Code NFPA 54/ANSI Z223.1 - latest edition and in the National Standard of Canada, CAN/CSA B149.1 and CAN/CSA B149.2 - latest editions and amendments. To install the liner, rea ...

MUST BE ELECTRICALLY GROUNDED IN ACCORDANCE WITH LOCAL CODES OR, IN THEIR ABSENCE, WITH THE LATEST EDITION OF THE NATIONAL ELECTRIC CODE. WIRING HARNESS The wiring harness is an integral part of this furnace. Field alteration to comply with electrical codes should not be required. Wires are color coded for identification purposes. Refer 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° C. Any replacement wiring must be a ...

This furnace is equipped with a blower door interlock switch which interrupts unit voltage when the blower door is opened for servicing. Do not defeat this switch. 24 VOLT THERMOSTAT WIRING NOTE: Wire routing must not interfere with circulator blower operation, filter removal, or routine maintenance. Low voltage connections can be made through either the right or left side panel. Thermostat wiring entrance holes are located in the blower compartment. The following figure shows connections for a “heat only” system and “heat/cool system”. Y R C Y R C G W Y C Furnace Control Furnace Control Remot ...

model and heat / cool speeds the same. In addition, both furnaces must be powered by separate circuits originating from the same power leg in the main electrical box (hot and neutral must be in phase). Furnaces can be twinned to provide either single or 2-stage heat. If used as 2-stage heat the temperature rise from the register to return will be reduced during low fire operation. To twin furnaces, ensure models are the same. Connect twin terminals on both furnaces and ensure heat and cool speeds are the same on both furnaces. For single stage operation, wire thermostat as normal ...

not normally require change. Most cases will not require a change at altitudes up to 7,500 feet. For use at altitudes in excess of 4,500 feet, refer to the following table for maximum input rates based on altitude. Contact your local gas utility for the heating value of the gas. Refer to National Fuel Gas Code ANSI Z223.1 and the following section to calculate firing rates. Maximium Firing Rates At Altitude Model (Kbtu/hr) Altitude (ft) 45 70 90 115 140 5,000 39,000 58,500 78,000 97,500 117,000 7,500 35,000 52,500 70,000 87,500 105,000 10,000 34,000 51,000 68,000 77,000 92,400 * Firing ...

manufacturer’s propane gas conversion kit, must be applied for propane gas installations. Refer to the “Propane Gas and/or High Altitude Installations” section for details. Contact your distributor for a tabular listing of appropriate manufacturer’s kits for propane gas and/or high altitude installations. The indicated kits must be used to insure safe and proper furnace operation. All conversions must be performed by a qualified installer, or service agency. GAS PIPING CONNECTIONS GENERAL CAUTION TO AVOID POSSIBLE UNSATISFACTORY OPERATION OR EQUIPMENT DAMAGE DUE TO UNDERFIRING OF E ...

installer may also need to supply a transition piece from 1/ 2 inch to another pipe size. COUNTERFLOW INSTALLATIONS When the gas piping enters through the left side of the furnace, the installer must supply a straight pipe to reach the exterior of the furnace. A ground joint union, drip leg, and manual shutoff valve must also be supplied by the installer. 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 right side of the furnace, the installer must supply the following fittings (starting at the gas ...