Goodman manufacturing company, l.P. 2550 north loop west, suite 400, houston, tx 77092 www.Goodmanmfg.Com © 2006 goodman manufacturing company, l.P. Io-299a 8/06 i nstallation i nstructions gmh95 / gch9 g as -f ired w arm a ir f urnace attention installing personnel as a professional installer you h...
2 table of contents i. Component identification ............................................................................................................................................... 5 ii. Safety ..................................................................................................
3 xiv. Startup procedure & adjustment ............................................................................................................................. 27 h eat a nticipator s etting ............................................................................................................
4 warning i f the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life. – d o not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. – what to do if ...
5 i. Co i. Co i. Co i. Co i. Compo mpo mpo mpo mponent id nent id nent id nent id nent identifi entifi entifi entifi entific c c c ca a a a ati ti ti ti tio o o o on n n n n 1 gas valve 2 gas line entrance (alternate) 3 pressure switch 4 gas manifold 5 combustion air intake connection / “coupling” 6...
6 4. Discharge your body to ground before removing a new control from its container. Follow steps 1 through 3 if installing the control on a furnace. Return any old or new controls to their containers before touching any ungrounded object. Iii. Pr iii. Pr iii. Pr iii. Pr iii. Pro o o o oduc duc duc ...
7 iv iv iv iv iv. Loc . Loc . Loc . Loc . Loca a a a ati ti ti ti tio o o o on requirements & co n requirements & co n requirements & co n requirements & co n requirements & consid nsid nsid nsid nsidera era era era erati ti ti ti tio o o o ons ns ns ns ns g eneral warning t o prevent possible equip...
8 f urnace s uspension if suspending the furnace from rafters or joists, use 3/8" threaded rod and 2”x2”x1/8” angle iron as shown below. The length of rod will depend on the application and the clearances necessary. Tilt outward to allow for door and circulator blower removal 3/8" diameter threaded ...
9 refer to the latest edition of the national fuel gas code nfpa 54/ ansi z223.1 (section 5.3), or csa b149 installation codes (sec- tions 7.2, 7.3, or 7.4), or applicable provisions of the local building codes for determining the combustion air requirements for the appliances. Most homes will requi...
10 fu rnace water heater outlet air chimney o r gas vent note: the inlet and outlet air openings must each have a free area of not less than one square inch per 4000 btu of the total input rating of all equipment in the enclosure. Inlet air duct [ends 1 ft (3 00 mm) above floor] ventilation louvers ...
11 5. When directly communicating with the outdoors, the single open- ing shall have a minimum free area of 1 square inch per 3,000 btu per hour of total input rating of all equipment in the enclo- sure. 5.3.4 specially engineered installations: the requirements of 5.3.3 shall not necessarily govern...
12 air discharge air discharge air discharge bottom return duct connection bottom return duct connection bottom return duct connection side return duct connection side return duct connection upflow upright upflow horizontal right air discharge upflow horizontal left air discharge alternate flue pipe...
13 t ermination l ocations notes: refer to section iv, location requirements and considerations for combustion air contaminant restrictions. The following bullets and diagram describe the restrictions con- cerning the appropriate location of vent/flue pipe and combustion air intake pipe (when applic...
14 c anadian v enting r equirements in canada, venting must conform to the requirements of the cur- rent can/csa-b149 installation code. Use only csa listed two or three inch diameter pvc or abs pipe, solvent cement, and fittings throughout. Carefully follow the pipe manufacturers’ instructions for ...
15 counterflow units. 1. Remove and save the four screws securing the vent/flue coupling to the furnace basepan. Also remove the three screws securing the furnace’s internal vent/flue piping to the blower deck. 2. Upflow and counterflow units. Loosen the worm gear hose clamps on the rubber elbow and...
16 12 " min to roof or highest anticipated snow level tee vertical termination (single pipe) 12" min. To roof or highest anticipated snow level 90º medium radius elbows alternate vertical termination (single pipe) min. 12" from wall 12" to ground or highest anticipated snow level wall inside outside...
17 for details concerning connection of pipes to the furnace, refer to the section ix, vent/flue pipe and combustion pipe - standard furnace connections or alternate furnace connections. V ent /f lue and c ombustion a ir p ipe l engths and d iameters refer to the following table for applicable lengt...
18 alternate vent termination above anticipated snow level (dual pipe) in a basement installation, the pipes may be run between the joist spaces. If the pipes must go below the joist and then up into the last joist space to penetrate the header, two 45° elbows should be used to reach the header rath...
19 1. Remove the rubber plug from the front cover drain port (right or left side, depending on the intended drain trap mounting). 2. Secure hose a to front cover drain port with a red hose clamp. Route hose to rear side panel grommet hole. Note: for left side drainage, grommets will have to be reloc...
20 u pright d rain t rap m ounting (l eft or r ight s ide p anel ) 1. Insert drain tubes into drain trap and position the drain trap against the side panel. Note: drain tubes must reach the bottom of the drain trap. 2. Secure drain trap to side panel at the mounting holes (dimples or crosshairs on c...
21 h orizontal d rain t rap m ounting (l eft or r ight s ide p anel ) 1. Position the drain trap against side panel with drain tubes inserted into trap. Note that the trap may be orientated with the outlet facing either the furnace’s top cover or base pan. 2. Secure drain trap to side panel at the d...
22 24 v olt t hermostat w iring 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. Wir...
23 in some areas the gas supplier may artificially derate the gas in an effort to compensate for the effects of altitude. If the gas is artifi- cially derated, the appropriate orifice size must be determined based upon the btu/ft 3 content of the derated gas and the altitude. Refer to the national f...
24 • connect the furnace to the building piping by one of the following methods: – rigid metallic pipe and fittings. – semi-rigid metallic tubing and metallic fittings. Aluminum alloy tubing must not be used in exterior locations. In order to seal the grommet cabinet penetration, rigid pipe must be ...
25 caution e dges of sheet metal holes may be sharp. U se gloves as a precaution when removing hole plugs. D irect /s tandard i nlet p iping when gas piping enters directly to the gas valve through the stan- dard inlet hole, the installer must supply straight pipe with a ground joint union to reach ...
26 sizing between single or second stage regulator and appliance* maximum propane capacities listed are based on 1/2" w.C. Pressure drop at 11" w.C. Setting. Capacities in 1,000 btu/hour. Pipe or nominal pipe size tubing tubing size, o.D. Type l schedule 40 length, 3/8" 1/2" 5/8" 3/4" 7/8" 1-1/8" 1/...
27 600 800 1000 1200 1400 1600 2000 0453bxa 388* 388* 480 576 --- --- --- 0703bxa --- 647* 647* 647* 672 --- --- 0704cxa --- --- 583* 583* 672 768 --- 0904cxa --- --- 863* 863* 863* 863* --- 0905dxa --- --- --- 777* 777* 777* 960 1155dxa --- --- --- 971* 971* 971* 971* input__a ir fl ow cooling airf...
28 on/off switch inlet pressure boss high fire coil terminal (hi) low fire regulator adjust manometer manometer hose a high fire regulator adjust regulator vent common terminal (c) coaxial coil terminal (m) outlet pressure boss open to atmosphere white-rodgers model 36g54 connected to manometer 1. T...
29 gas rate range nominal low stage 1.7 to 2.3" w.C. 2.0" w.C. High stage 3.2 to 3.8" w.C. 3.5" w.C. Low stage 5.7 to 6.3" w.C. 6.0" w.C. High stage 9.7 to 10.3" w.C. 10.0" w.C. Manifold gas pressure natural propane g as i nput r ate m easurement (n atural g as o nly ) the gas input rate to the furn...
30 orange high common/neutral medium low circulator blower speeds low red medium blue black white xv xv xv xv xv. No . No . No . No . Norm rm rm rm rmal sequen al sequen al sequen al sequen al sequence o ce o ce o ce o ce of opera f opera f opera f opera f operati ti ti ti tio o o o on n n n n p owe...
31 c ooling m ode the normal operational sequence in cooling mode is as follows: • r and y thermostat contacts close, initiating a call for cool. • integrated control module performs safety circuit checks. • outdoor fan and compressor are energized. • circulator blower is energized on cool speed fol...
32 xviii. Troubleshooting xviii. Troubleshooting xviii. Troubleshooting xviii. Troubleshooting xviii. Troubleshooting e lectrostatic d ischarge (esd) p recautions note: discharge body’s static electricity before touching unit. An electrostatic discharge can adversely affect electrical components. Us...
33 f ilter r emoval depending on the installation, differing filter arrangements can be applied. Filters can be installed in either the central return register or a side panel external filter rack (upflow only). A media air filter or electronic air cleaner can be used as an alternate filter. Follow ...
34 x x x x xx. Internal fil x. Internal fil x. Internal fil x. Internal fil x. Internal filter rem ter rem ter rem ter rem ter remov ov ov ov oval al al al al internal filters are an accessory item and are not included with your furnace. For further details, see your distributor. B ottom r eturn r e...
35 1 integrated control module will automatically attempt to reset from lockout after one hour. Troubleshooting chart • furnace lockout due to an excessive number of ignition “retries” (3 total) 1 . • locate and correct gas interruption. • check front cover pressure switch operation (hose, wiring, c...
36 • polarity of 115 volt ac power to furnace or integrated control module is reversed. • orange and gray wires to transformer are reversed. • poor unit ground. • circulator blower runs continuously. No furnace operation. • integrated control module diagnostic led is flashing four (4) flashes. • pri...
37 gmh95 & gch9 gmh95 & gch9 gmh95 & gch9 gmh95 & gch9 gmh95 & gch9 © 2006 goodman manufacturing company, l.P. Wiring is subject to change, always refer to the wiring diagram on the unit for the most up-to-date wiring. Wiring diagram to avoi d p o ssi b l e electri cal shock, perso nal i n jury, or ...
