I nstallation i nstructions gmh95/gch95/gch9 g as -f ired w arm a ir f urnace 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, thorough...
2 table of contents i mportant n ote to the o wner regarding p roduct w arranty ............................................................................. 4 i. Component identification ...................................................................................................................
3 table of contents warning g oodman will not be responsible for any injury or property damage arising from improper service or service procedures. I f you install or perform service on this unit, you assume responsibility for any personal injury or propery damage which may result. M any jurisdictio...
4 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 you ...
5 i. Component identification 1 gas valve 2 gas line entrance (alternate) 3 pressure switch 4 gas manifold 5 combustion air intake connection / “coupling” 6 hot surface igniter 7 rollout limit 8 burners 9 flame sensor 10 flue pipe connection / “coupling” 11 flue pipe (internal) 12 primary limit 13 g...
6 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. Discharge your body to ground before removing a new control from its container. Follow steps 1 through 3 if installing the control on a...
7 the rated heating capacity of the furnace should be greater than or equal to the total heat loss of the area to be heated. The total heat loss should be calculated by an approved method or in accor- dance with “ashrae guide” or “manual j-load calculations” pub- lished by the air conditioning contr...
8 of 0.25 square inches per 1,000 btu/hr of furnace input rating. Refer to the specification sheet applicable to your model for mini- mum clearances to combustible surfaces. One of the ventilation openings must be within 12 inches of the top; the other opening must be within 12 inches of the bottom ...
9 house depressurization can cause back drafting or improper com- bustion of gas-fired appliances, thereby exposing building occu- pants to gas combustion products that could include carbon mon- oxide. If this furnace is to be installed in the same space with other gas appliances, such as a water he...
10 equipment located in confined spaces; all air from outdoors— inlet air from ventilated crawl space and outlet air to ventilated attic. See 5.3.3-b 2. When communicating with the outdoors through vertical ducts, each opening shall have a minimum free area of 1 square inch per 4,000 btu per hour of...
11 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 the areas of all vent connectors in the confined space. Alterna...
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 the performance of the furnace and must be carefully sized. All piping must be installed in accordance with local codes and these instructions. Piping must be adequately secured and supported to prohibit sag- ging, joint separation, and/or detachment from the furnace. Hori- zontal runs of vent/fl...
14 note: in canada, the canadian fuel gas code takes precedence over the preceding termination restrictions. C anadian v enting r equirements in canada, venting must conform to the requirements of the cur- rent can/csa-b149.1-05 installation code. Use only csa-listed, ulc-s636 compliant two- or thre...
15 1. Remove and save the four screws securing the vent/flue coupling to the furnace top panel. 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 de...
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 in a upright installation drain hoses are connected to drain ports on the rubber elbow and the recuperator coil front cover. The drain lines are then routed through the right side panel and into the drain trap secured to the outside of the cabinet. Note: refer to alternate vent/flue hose connecti...
20 a lternate v ent /f lue d rain h ose c onnections upright installations using the alternate vent/flue outlet will require “right-side only” drain hoses to be connected as follows. Refer to vent/flue pipe and combustion air pipe for details on alternate vent/flue pipe connection. 1. Remove the rub...
21 u pright i nstallations -t rap on l eft s ide note: for left side trap installation, grommets must be moved to the left side of the furnace and the plugs installed on the right side of the furnace. 1. Remove the rubber plug from the left side drain port on the front cover. 2. Secure hose a to fro...
22 cabinet width (inches) models (kbtu_tons) "x" length to cut from long end of hose b (inches) 17 1/2 45_30 7 21 70_40 3 1/2 090_50 115_50 none 24 1/2 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 p...
23 l eft s ide d own horizontal installations with the left side panel down will require drain hoses to be connected to the left side front cover drain port and the side drain port on the rubber elbow. 1. Remove the rubber plug from the front cover left (down) side drain port. 2. Relocate the front ...
24 xi. Electrical connections high voltage! T o avoid the risk of electrical shock , wiring to the unit must be polarized and grounded . Warning high voltage! T o avoid personal injury or death due to electrical shock , disconnect electrical power before servicing or changing any electrical wiring ....
25 w w w y y y c c r r r g g w y c r g heating room thermostat heating and cooling room thermostat furnace furnace remote condensing unit thermostat diagram this furnace is equipped with a 40 va transformer to facilitate use with most cooling equipment. Consult the wiring diagram, located on the blo...
26 a different pressure switch may be required at high altitude regard- less of the btu/ft 3 content of the fuel used. Contact your distributor for a tabular listing of appropriate altitude ranges and correspond- ing manufacturer’s pressure switch kits. P ropane g as c onversion p ossible property d...
27 • 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 ...
28 e dges of sheet metal holes may be sharp . U se gloves as a precaution when removing hole plugs . Warning 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 reac...
29 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 nominal pipe size tubing tubing size, o.D. Type l schedule 40 length, 3/8" 1/2" 5/8" 3/4" 7/8" 1/2" 3/4" feet 10 730 1,700...
30 600 800 1000 1200 1400 1600 2000 0453bx a 194* 194* 240 288 --- --- --- 0703bx a --- 324* 324* 324* 336 --- --- 0704cx a --- --- 291* 291* 336 384 --- 0904cx a --- --- 432* 432* 432* 432* --- 0905dx a --- --- --- 388* 388* 388* 480 1155dx a --- --- --- 486* 486* 486* 486* input_ _ a ir fl ow c oo...
31 f urnace s hutdown 1. Set the thermostat to the lowest setting. The integrated control will close the gas valve and extinguish flame. Following a 15 second delay, the induced draft blower will be de-energized. After a 100 or 150 second delay period (field selectable), the circulator blower will b...
32 if supply pressure differs from table, make the necessary adjust- ments to pressure regulator, gas piping size, etc., and/or consult with local gas utility. 5. Turn off gas to furnace at the manual shutoff valve and disconnect manometer. Reinstall plug before turning on gas to furnace. 6. Turn of...
33 installation’s seconds per cubic foot: 34 sec/ ft 3 conversion factor (hours to seconds): 3600 sec/hr input = (htg. Value x 3600) ÷ seconds per cubic foot input = (1,000 btu/ft 3 x 3600 sec/hr) ÷ 34 sec/ ft 3 input = 106,000 btu/hr this measured input must not be greater than the input indicated ...
34 • circulator blower is energized on high heat speed following a fixed thirty second blower on delay. Electronic air cleaner terminals are energized with circulator blower. • furnace operates; integrated control module monitors safety circuits continuously. • r and w thermostat contacts open, comp...
35 check the burner flames for: 1. Good adjustment 2. Stable, soft and blue 3. Not curling, floating, or lifting off. Burner flame xvii. Safety circuit description g eneral a number of safety circuits are employed to ensure safe and proper furnace operation. These circuits serve to control any poten...
36 1. Automatic reset. The integrated control module will automatically reset itself and attempt to resume normal operations following a one hour lockout period. 2. Manual power interruption. Interrupt 115 volt power to the furnace for 1 - 20 seconds. 3. Manual thermostat cycle. Lower the thermostat...
37 c ondensate t rap and d rain s ystem (q ualified s ervicer o nly ) annually inspect the drain tubes, drain trap, and field-supplied drain line for proper condensate drainage. Check drain system for hose connection tightness, blockage, and leaks. Clean or repair as necessary. F lame s ensor (q ual...
38 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...
39 2 led flash code will cease if power to the control module is interrupted through the disconnect or door switch. Troubleshooting chart 4 4 flashes • circulator blower runs continuously. No furnace operation. • integrated control module diagnostic led is flashing four (4) flashes. 6 6 flashes 7 7 ...
40 tons ac at 0.5" 0.6 0.7 0.8 esp cfm rise cfm rise cfm rise cfm rise cfm rise cfm cfm cfm high 3.0 1352 29 1318 30 1260 31 1202 33 1128 35 1044 955 853 gmh950453bxa* med 2.5 1214 32 1172 34 1123 35 1064 37 1012 39 938 859 741 (med-hi) med-lo 2.0 997 40 994 40 960 41 923 43 884 45 817 741 611 low 1...
41 1. Cfm in chart is without filters(s). Filters do not ship with this furnace, but must be provided by the installer. If the furnace requires two return filters, this chart assumes both filters are installed. 2. All furnaces ship as high speed cooling and medium-speed heating. Installer must adjus...
42 gmh95 & gch9 wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring. Wiring diagram h ig h v o lta g e ! D is co nne ct al l po wer be f o re se r v ic in g or in s t a lli n g th is uni t . M u lti p l e po wer s o u rce s ma y be pr e s en t ....
43 gch95 wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring. H ig h v o lta g e ! D is co nne ct al l po wer be f o re se r v ic in g or in s t a lli n g th is uni t . M u lti p l e po wer s o u rce s ma y be pr e s en t . F ail u re to do so m...
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