INSTALLATION INSTRUCTIONS FOR *M(H,S)8 / GD(H,S)8 / GHS8 / GME8 ADS(H,S)8 / AMEH8 GAS FURNACE (CATEGORY I ) 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·CSA2.3 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.
Table of Contents SAFETY CONSIDERATIONS ............................................................................................................................ 5 ADDITIONAL SAFETY CONSIDERATIONS ...................................................................................................... 6 SHIPPING INSPECTION ........................................................................................................................... 6 ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ...................
Table of Contents PROPANE GAS TANKS AND PIPING ......................................................................................................... 22 CIRCULATING AIR AND FILTERS .................................................................................................................... 22 DUCTWORK - AIR FLOW ...................................................................................................................... 22 CHECKING DUCT STATIC .............................................
Table of Contents MAINTENANCE ......................................................................................................................................... 33 ANNUAL INSPECTION ........................................................................................................................... 33 FILTERS .......................................................................................................................................... 33 FILTER MAINTENANCE ...........................
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.
ADDITIONAL SAFETY CONSIDERATIONS • • This furnace is approved for Category I Venting only. Provisions must be made for venting combustion products outdoors through a proper venting system. The length of flue pipe could be a limiting factor in locating the furnace. SHIPPING INSPECTION All units are securely packed in shipping containers tested according to International Safe Transit Association specifications. The carton must be checked upon arrival for external damage.
2. Firmly touch a clean, unpainted, metal surface of the furnaces near the control. Any tools held in a person’s hand during grounding will be discharged. 3. Service integrated control module or connecting wiring following the discharge process in step 2. Use caution not to recharge your body with static electricity; (i.e., do not move or shuffle your feet, do not touch ungrounded objects, etc.). If you come in contact with an ungrounded object, repeat step 2 before touching control or wires. 4.
A copy of the National Fuel Gas Code (NFPA 54/ANSI Z223.1) can be obtained from any of the following: American National Standards Institute 1430 Broadway New York, NY 10018 WARNING TO PREVENT POSSIBLE EQUIPMENT DAMAGE , PROPERTY DAMAGE, PERSONAL INJURY OR DEATH , THE FOLLOWING BULLET POINTS MUST BE OBSERVED WHEN INSTALLING THIS UNIT. National Fire Protection Association 1 Batterymarch Park Quincy, MA 02269 Follow the instructions listed below when selecting a furnace location.
• • • • • • • 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. For vertical (upflow or downflow) applications, the minimum cooling coil width shall not be less than furnace width minus 1”.
HORIZONTAL INSTALLATION 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. For horizontal installations, insert the #8 x 5/8 screw from the literature package. Line contact to framing is permitted when installed in the horizontal configuration. Line contact is defined as the portion of the cabinet that is formed by the intersection of the top and side.
• • • • • Radiant heat from the sun. Light fixtures or other appliances. Radiant heat from a fireplace. Concealed hot or cold water pipes, or chimneys. Unconditioned areas behind the thermostat, such as an outside wall. This furnace must use indoor air for combustion. It cannot be installed as a direct vent (i.e., sealed combustion) furnace.
The minimum vent diameter for the Category I venting system is as shown: MODEL 40 60 80 100 120 140 MINIMUM VENT UPFLOW 4 Inch 4 Inch 4 Inch 5 Inch 5 Inch 5 Inch COUNTERFLOW 4 Inch 4 Inch 4 Inch 5 Inch N/A N/A 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.
WARNING Proper Chimney Termination? (Check 1) POSSIBILITY OF PROPERTY DAMAGE , PERSONAL INJURY OR DEATH DAMAGING CONDENSATION CAN OCCUR INSIDE MASONRY CHIMNEYS WHEN A SINGLE FAN -ASSISTED C ATEGORY I APPLIANCE (80% AFUE FURNACE) IS VENTED WITHOUT ADEQUATE DILUTION AIR . DO NOT 80% FURNACE TO A MASONRY CHIMNEY UNLESS THE CONNECT AN FURNACE IS COMMON VENTED WITH A DRAFT HOOD EQUIPPED APPLIANCE OR THE CHIMNEY IS LINED WITH A METAL LINER OR TYPE B METAL VENT .
CHECK 3 - CHIMNEY CROWN CONDITION. 10' or Less 2' Min. 2' Min. 3' Min. Wall or Parapet Chimney 10' or Less 2' Min. 3' Min. 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 b) Bricks missing c) Mortar missing d) Tile liner cracked 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.
Flexible liners should be hung straight or nearly straight. If it is spiraled in the chimney and in good condition, it should be rehung. To do this, break the top seal; pull up and cut off the excess liner length, and refit the top seal. Use caution when doing this, as the cut edges of flexible liners may be sharp. • Extremely cold weather • Long vent connectors • Masonry chimneys with no air gap between the liner and the bricks. (In practice, this can be difficult to detect.
FIX 4 - RELINING Relining options include B vent and flexible liners. If the chimney has diagonal offsets, B vent probably cannot be used. Some manufacturers of flexible liners offer an insulation sleeve designed to be added to the liner before it is installed in the chimney. (Poured insulation, either vermiculite or other materials, is no longer recommended.) Insulation will need to be added to the flexible liner if: • It is required by the liner manufacturer’s instructions.
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 copper conductor.
To ensure proper unit grounding, the ground wire should run from the furnace ground screw located inside the furnace junction box all the way back to the electrical panel. NOTE: Do not use gas piping as an electrical ground. To confirm proper unit grounding, turn off the electrical power and perform the following check. 1. Measure resistance between the neutral (white) connection and one of the burners. 2. Resistance should measure 10 ohms or less. 3.
115 VOLT LINE CONNECTION OF ACCESSORIES 24 VAC HUMIDIFIER ELECTRONIC AIR CLEANER Optional Accessories EAC Transformer Line Line Transformer EAC-H The yellow wire connected to the I.D. Blower pressure switch is powered anytime the pressure switch is closed and provides (GME8, AMEH8, GDH8, ADSH8 & (A/G)MH8 MODELS ONLY) 24 VAC humidifier control. Remove the yellow wire and connect a field supplied jumper wire with a “piggyback” terminal to WARNING the pressure switch terminal.
Models using 2-Stage Gas Valves HIGH ALTITUDE DERATE M anifold Pre s s ure IMPORTANT NOTE: The furnace, as shipped, requires no change to run between 0 - 5500 feet. Do not attempt to increase the firing rate by changing orifices or increasing the manifold pressure below 5500 feet. This can cause poor combustion and equipment failure. Gas Altitude Natural Kit Orifice None LPM-06 Pre s s ure Sw itch Change High Stage Low Stage #45 3.5" w .c. 1.9" w .c. None #55 10.0" w .c. 6.0" w .c.
• • • • • • • • Use pipe joint compound on male threads only. Pipe joint compound must be resistant to the action of the fuel used. Use ground joint unions. Install a drip leg to trap dirt and moisture before it can enter the gas valve. The drip leg must be a minimum of three inches long. Install a 1/8" NPT pipe plug fitting, accessible for test gage connection, immediately upstream of the gas supply connection to the furnace.
PROPANE GAS TANKS AND PIPING PROPANE GAS PIPING CHARTS Sizing Between First and Second Stage Regulator* Maximum Propane Capacities listed are based on 2 psig pressure drop at 10 psig setting. Capacities in 1,000 BTU/hour. WARNING IF THE GAS FURNACE IS INSTALLED IN A BASEMENT , AN EXCAVATED AREA OR CONFINED SPACE , IT IS STRONGLY RECOMMENDED TO Pipe or Tubing Length, Feet 10 20 30 40 50 60 80 100 125 150 175 200 CONTACT A PROPANE SUPPLIER TO INSTALL A GAS DETECTING WARNING DEVICE IN CASE OF A GAS LEAK.
When the furnace is used in connection with a cooling unit, the furnace should be installed in parallel with or on the upstream side of the cooling unit to avoid condensation in the heating element. With a parallel flow arrangement, the dampers or other means used to control the flow of air must be adequate to prevent chilled air from entering the furnace and, if manually operated, must be equipped with means to prevent operation of either unit unless the damper is in the full heat or cool position.
CIRCULATION AIR FILTERS • Igniter warm up begins after 15 second prepurge expires. One of the most common causes of a problem in a forced air • Low and high-stage gas valves open at end of igniter warm up period, delivering gas to burners and establishing flame. heating system is a blocked or dirty filter. Circulating air filters must be inspected monthly for dirt accumulation and replaced if necessary. Failure to maintain clean filters can cause premature heat exchanger failure.
• Circulator blower is de-energized following a heat off delay period (selectable 100 or 150 seconds; factory set at 150 seconds). If the furnace is operating in the low-stage heating mode when thermostat contacts open, circulator remains at low heat speed for the selected delay off period. If the furnace is operating in high-stage heating mode when the thermostat contacts open, the circulator blower remains at high heat speed for the selected heat off delay period.
8. Replace the door on the front of the furnace. 9. Open the manual gas valve external to the furnace. 10. Turn on the electrical power supply to the furnace. 11. Set the room thermostat to the desired temperature. NOTE: There is an approximate 30 second delay between thermostat energizing and burner firing. FURNACE SHUTDOWN 1. Set the thermostat to lowest setting. 2. Turn off the electrical power supply to the furnace. 3. Set the room thermostat to the lowest possible setting. 4.
Manometer Hose Open to Atmosphere INLET GAS SUPPLY PRESSURE Natural Gas Minimum: 4.5" w.c. Maximum: 10.0" w.c. Propane Gas Minimum: 11.0" w.c. Maximum: 13.0" w.c. Outlet Pressure Boss 9. Turn OFF all electrical power and gas supply to the system. 10. Remove the manometer hose from the hose barb fitting or inlet pressure Tap. 11. Replace inlet pressure tap: a. Honeywell valve: Remove the 1/8” NPT hose barb fitting from the inlet pressure tap.
1. Turn OFF gas to furnace at the manual gas shutoff valve external to the furnace. 2. Connect a calibrated water manometer (or appropriate gas pressure gauge) at either the gas valve inlet pressure Tap or the gas piping drip leg. See Honeywell gas valve figure or White-Rodgers gas valve figure for location of inlet pressure Tap.
9. Remove regulator cover screw from the outlet pressure regulator and turn screw clockwise to increase pressure or counterclockwise to decrease pressure. Replace regulator cover screw. 10. Turn OFF all electrical power and gas supply to the system. 11. Remove the manometer hose from the hose barb fitting or outlet pressure Tap. 12. Replace outlet pressure tap: a. Honeywell valve: Remove the 1/8” NPT hose barb fitting from the outlet pressure tap.
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. Ensure all the appliances are functioning properly and that all pilot burners are operating. 4.
OPERATIONAL CHECKS WARNING TO AVOID PERSONAL INJURY OR DEATH, DO NOT REMOVE ANY INTERNAL COMPARTMENT COVERS OR ATTEMPT ANY ADJUSTMENT. ELECTRICAL COMPONENTS ARE CONTAINED IN BOTH COMPARTMENTS. CONTACT A 1 QUALIFIED SERVICE AGENT AT ONCE IF AN ABNORMAL FLAME APPEARANCE OFF 100 SECOND DELAY ON OFF ON 150 SECOND DELAY 1 As shipped, the circulator blower fan will remain on for 150 seconds after the gas valve closes.
SAFETY CIRCUIT DESCRIPTION TROUBLESHOOTING GENERAL ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS A number of safety circuits are employed to ensure safe and proper furnace operation. These circuits serve to control any potential safety hazards and serve as inputs in the monitoring and diagnosis of abnormal function. These circuits are continuously monitored during furnace operation by the integrated control module.
RESETTING FROM LOCKOUT FILTERS Furnace lockout results when a furnace is unable to achieve WARNING ignition after three attempts. It is characterized by a non-funcTO AVOID PROPERTY DAMAGE , PERSONAL INJURY OR DEATH, tioning furnace and a one flash diagnostic LED code from the DISCONNECT ELECTRICAL POWER BEFORE REMOVING FILTERS . NEVER red LED. If the furnace is in “lockout”, it will (or can be) reset in OPERATE FURNACE WITHOUT A FILTER INSTALLED BECAUSE DUST AND any of the following ways.
FLAME SENSOR (QUALIFIED SERVICER ONLY) CAUTION Under some conditions, the fuel or air supply can create a nearly invisible coating on the flame sensor. This coating acts as an insulator causing a drop in the flame sense signal. If the flame sense signal drops too low the furnace will not sense flame and will lock out. The flame sensor should be carefully cleaned by a qualified servicer using emery cloth or steel wool. Following cleaning, the flame sense signal should be 1 to 6 microamps at 115 volts.
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
TROUBLESHOOTING CHART Symptoms of Abnormal Operation Associated LED Code2 Fault Description(s) Possible Causes • Furnace fails to operate. NONE • No 115 volt power to furnace, or no 24 volt power to integrated control module. • Manual disconnect switch OFF, door switch open, or 24 volt wires improperly connected or loose. • Integrated control module diagnostic LED provides no signal. • Blown fuse or circuit • Blown fuse or circuit breaker. breaker. • Furnace fails to operate.
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 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.
TROUBLESHOOTING CHART Symptoms of Abnormal Operation Associated Associated LED Code Code22 LED • Furnace not operating. • Integrated control module diagnostic LED is flashing EIGHT (8) flashes. • Induced draft blower runs continuously. No furnace operation. Fault Description(s) • Problem with igniter circuit. Possible Causes C • Polarity of 115 or 24 volt power is reversed. • Check and correct wiring from integrated control module to igniter. • Turn power OFF prior to repair. • Bad igniter.
BLOWER PERFORMANCE DATA *M(H/S)8 (CFM & Temperature Rise vs. External Static Pressure) Heating Speed As Shipped EXTERNAL STATIC PR ESSUR E (Inch es Water Colu mn) Tons AC Model Motor Speed at 0.5" 0. 1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 ESP CFM RISE CFM RISE CFM R ISE CFM RISE CFM RISE CFM C FM CFM H IGH 3.0 1521 ---- 1466 ---- 1414 ---- 1373 ---- 1298 ---- 1243 1164 1075 *M(H/S)80403A*** MED 2.
BLOWER PERFORMANCE DATA GDS8/ADSS8 (CFM & Tem perature Rise vs. Exte rna l Static Pre ssure) Tons AC Model Motor Speed Heating Speed As Shipped EXTERNAL STATIC PRESSURE (Inches W ater Column) at 0.5" ESP 0.1 0.2 0.3 0.4 0.6 0.5 0.7 0.8 CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM HIGH 3.0 1353 ---- 1290 ---- 1246 ---- 1199 25 1149 26 1116 1116 1099 *DS(S)80403A*** MED 2.5 1183 25 1113 27 1098 27 1052 28 1039 29 1006 1012 (MEDIUM) MED-LO 2.
BLOWER PERFORMANCE DATA GDH8 / ADSH8 (CFM & Temperature Rise vs. External Static Pressure) Model Heating Speed As Shipped Tons AC Motor Speed at 0.5" ESP EXTERNAL STATIC PRESSURE (Inches W ater Column) 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM HIGH 3.0 1353 ---- 1290 ---- 1246 ---- 1199 25 1149 26 1116 1116 1099 *D(H,S)(H)80403A*** MED 2.5 1183 25 1113 27 1098 27 1052 28 1039 29 1006 1012 (MEDIUM) MED-LO 2.
BLOWER PERFORMANCE DATA GME8 (CFM & Temperature Rise vs. External Static Pressure) Model Heating Speed As Shipped GME80603B*** Tons AC Motor Speed ESP GME81005C*** 0.1 0.2 0.3 0.4 0.6 0.5 0.7 0.8 CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM T1 - YELLOW 1.5 875 ---- 793 ---- 736 ---- 674 ---- 592 ---- 556 509 460 T2 - RED 2.0 1032 43 965 46 914 49 861 ---- 810 ---- 756 712 659 T3 - ORANGE 2.
BLOWER PERFORMANCE DATA AMEH8 C Heating Speed As Shipped EXTERNAL STATIC PRESSURE (Inches W ater Column) Tons AC Model Motor Speed at 0.5" ESP 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM T1 - YELLOW 1.5 875 ---- 793 ---- 736 ---- 674 ---- 592 ---- 556 509 460 T2 - RED 2.0 1032 43 965 46 914 49 861 ---- 810 ---- 756 712 659 2.5 1217 37 1153 39 1098 40 1051 42 1009 44 964 918 877 T4 - BLUE 3.
*(M, D, H)S8 / ADSS8 WIRING DIAGRAM WARNING:DISCONNECT POWER BEFORE SERVICING.WIRING TO UNIT MUST BE PROPERLY POLARIZED AND GROUNDED.
GME8 / AMEH8 WIRING WHITE RODGERS GAS VALVE DIAGRAM WARNING:DISCONNECT POWER BEFORE SERVICING.W IRING TO UNIT MUST BE PROPERLY POLARIZED AND GROUNDED.
GME8 / AMEH8 WIRING DIAGRAM HONEYWELL GAS VALVE WARNING:DISCONNECT POWER BEFORE SERVICING. WIRING TO UNIT MUST BE PROPERLY POLARIZED ANDGROUNDED.
*(M,D)H8 / ADSH8 WIRING DIAGRAM WHITE RODGERS GAS VALVE WARNING:DISCONNECT POW ER BEFORE SERVICING.WIRING TO UNIT MUS T BE PROPERLY POLARIZED AND GROUNDED.
*(M,D)H8 / ADSH8 WIRING DIAGRAM HONEYWELL GAS VALVE WARNING:DISCONNECT POWER BEFORE SERVICING.WIRING TO UNIT MUST BE PROPERLY POLARIZED AND GROUNDED.