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Home > HVAC Equipment Lines > Goodman Equipment > Goodman Furnace > GM9C80/GC9C80 install-specs-accessories
GM9C80/GC9C80 install-specs-accessories
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Product Application

 

This furnace is primarily designed for residential home-heat- ing applications. It is NOT designed or certified for use in mobile homes, trailers or recreational vehicles. Neither is it designed or certified for outdoor applications. The furnace must be installed indoors (i.e., attic space, crawl space, or garage area provided the garage area is enclosed with an operating door).

 

This furnace can be used in the following non-industrial commercial applications:

 

Schools, Office Buildings, Churches, Retail Stores, Nursing Homes, Hotels/Motels, Common or Office Areas

 

In such applications, the furnace must be installed with the following stipulations:

  • It must be installed per the installation instructions provided and per local and national codes.
  • It must be installed indoors in a building constructed on site.
  • It must be part of a ducted system and not used in a free air delivery application.
  • It must not be used as a “make-up” air unit.
  • All other warranty exclusions and restrictions apply.

 

This furnace may be used as a construction site heater

ONLY if all of the following conditions are met:

  • The vent system is permanently installed per these installation instructions.
  • A room thermostat is used to control the furnace. Fixed jumpers that provide continuous heating CANNOT be used and can cause long term equipment damage. Bi-metal thermostats, or any thermostat affected by vibration must not be used during construction.
  • Return air ducts are provided and sealed to the furnace.
  • A return air temperature range between 60ºF (16ºC) and 80ºF (27ºC) is maintained.
  • Air filters are installed in the system and replaced daily

during construction and upon completion of construction.

  • MERV 11 (Example P/N AMP-11-2025-45) air filter(s) are installed in the system and inspected daily and replaced as needed during construction and upon completion of construction.
  • The input rate and temperature rise are set per the furnace rating plate.
  • 100% outside air must be used for combustion during construction. Temporary ducting may be used to supply outside air to the furnace for combustion – do not connect this duct directly to the furnace. Size this duct according to NFPA 54/ANSI Z223.1 section for Combustion and Ventilation Air.
  •  

The furnace heat exchanger, components, duct system, air filters and evaporator coils are thoroughly cleaned following final construction clean up by a qualified person.

  • All furnace operating conditions (including ignition,

input rate, temperature rise and venting) are verified by a qualified person according to these installation

instructions.

    • Furnace doors must be in place on the furnace while the

furnace is operating in any mode.

    • Damage or repairs due to failure to comply with these

requirements are not covered under the warranty.

 

Location Requirements and Considerations

 

Your unit model type determines which installation proce- dures must be used. For *M9C80 models, you must follow instructions for Horizontal Left, Horizontal Right or Upflow installations only. These furnaces are not approved for Down- flow installations.

 

*C9C80 models may be installed in the Downflow position as

well as Horizontal Left & Horizontal Right positions.

 

 

Follow the instructions listed below when selecting a furnace location. Refer also to the guidelines provided in the Com- bustion and Ventilation Air Requirements.

  • Centrally locate the furnace with respect to the proposed

or existing air distribution system.

  • Ensure the temperature of the return air entering the furnace is between 55°F and 100°F when the furnace is heating.
  • 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.
  • Ensure adequate combustion air is available for the furnace. Improper or insufficient combustion air can expose building occupants to gas combustion products that could include carbon monoxide. Refer to Combustion and Ventilation Air Requirements section.
  • The furnace must be level. If the furnace is to be set on a floor that may become wet or damp at times,  the furnace should be supported above the floor on a concrete base sized approximately 1-½” larger than the base of the furnace.
  • Ensure upflow or horizontal furnaces are not installed directly on carpeting, or any other combustible material. The only combustible material allowed is wood.

 

 

Gas and Venting:

 

 

MODEL MINIMUM VENT
UPFLOW COUNTERFLOW
060 4 inch 4 inch
080 4 inch 4 inch
100 5 inch 4 inch

 

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.

 

 

MANIFOLD GAS PRESSURE
Gas Range Nominal
Natural 3.2 - 3.8" w.c. 3.5" w.c.
Propane 9.7 - 10.3" w.c. 10.0" w.c.

 

 

 

 

Gas Altitude Kit Orifice Manifold Pressure Pressure Switch Change
Natural 0-5500 None #45 3.5" w.c. None
Propane LPM-06 #55 10.0"w.c. None

 

 

 

Length of
Pipe in Feet
Nominal Black  Pipe Size
1/2" 3/4" 1" 1 1/4" 1 1/2"
10 132 278 520 1050 1600
20 92 190 350 730 1100
30 73 152 285 590 980
40 63 130 245 500 760
50 56 115 215 440 670
60 50 105 195 400 610
70 46 96 180 370 560
80 43 90 170 350 530
90 40 84 160 320 490
100 38 79 150 305 460

 

 

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.
   
Pipe or Tubing Length, Feet Tubing Size, O.D. Type L Nominal Pipe Size Schedule 40    
3/8" 1/2" 5/8" 3/4" 7/8" 1/2" 3/4"    
10 730 1,700 3,200 5,300 8,300 3,200 7,500    
20 500 1,100 2,200 3,700 5,800 2,200 4,200    
30 400 920 2,000 2,900 4,700 1,800 4,000    
40 370 850 1,700 2,700 4,100 1,600 3,700    
50 330 770 1,500 2,400 3,700 1,500 3,400    
60 300 700 1,300 2,200 3,300 1,300 3,100    
80 260 610 1,200 1,900 2,900 1,200 2,600    
100 220 540 1,000 1,700 2,600 1,000 2,300    
125 200 490 900 1,400 2,300 900 2,100    
150 190 430 830 1,300 2,100 830 1,900    
175 170 400 780 1,200 1,900 770 1,700    
200 160 380 730 1,100 1,800 720 1,500    
Pipe or Tubing Length, Feet Tubing Size, O.D. Type L Nominal Pipe Size Schedule 40    
3/8" 1/2" 5/8" 3/4" 7/8" 1-1/8" 1/2" 3/4" 1" 1-1/4" 1-1/2"    
10 39 92 199 329 501 935 275 567 1,071 2,205 3,307    
20 26 62 131 216 346 630 189 393 732 1,496 2,299    
30 21 50 107 181 277 500 152 315 590 1,212 1,858    
40 19 41 90 145 233 427 129 267 504 1,039 1,559    
50 18 37 79 131 198 376 114 237 448 910 1,417    
60 16 35 72 121 187 340 103 217 409 834 1,275    
80 13 29 62 104 155 289 89 185 346 724 1,066    
100 11 26 55 90 138 255 78 162 307 630 976    
125 10 24 48 81 122 224 69 146 275 567 866    
150 9 21 43 72 109 202 63 132 252 511 787    
200 8 19 39 66 100 187 54 112 209 439 665    
250 8 17 36 60 93 172 48 100 185 390 590    

 

Accessories:

 

 

Model Description GM9C80 0403A* GM9C80 0603A* GM9C80 0603B* GM9C80 0803B* GM9C80 0804B* GM9C80 0804C* GM9C80 0805C* GM9C80 0805D* GM9C80 1004C* GM9C80 1005C* GM9C80 1205D*
AFE18-60A Fossil Fuel (Dual Fuel) Kit
HA-02 High-Altitude Natural Gas Kit
LPLP03 Low LP Gas Pressure Switch
LPM-06 LP Conversion Kits
Model Description GC9C80
0403A*
GC9C80
0603A*
GC9C80
0603B*
GC9C80
0804B*
AC9C80
0805C*
GC9C80
1005C*
                                 
SBT14 Downflow Sub-Base 14"                                  
SBT17 Downflow Sub-Base 17.5"                                  
SBT21 Downflow Sub-Base 21"                                  
AFE18-60A Fossil Fuel (Dual Fuel) Kit                                  
HA-02 High-Altitude Natural Gas Kit                                  
LPLP03 Low LP Gas Pressure Switch                                  
LPM-06 LP Conversion Kits                                  

 

 

 

                                                                                   
                                                                                   
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