York GM9S*DH manual

268890-UIM-B-0607 HIGH EFFICIENCY TUBULAR HEA T EXCHANGER SERIES MODELS: GY9S*DH / GM9S*DH / GF9S*DH (Single St age Downflow/Horizont al) 40 - 120 MBH INPUT (1 1.72 - 35. 17 KW) INPUT INSTALLATION MANUAL EFFICIENCY RATING CERTIFIED ISO 9001 Certified Quality Management System SECTION I: SAFETY This is a safety alert symbol . When you see this symbo[...]

268890-UIM-B-0607 2 Unitary Products Group SPECIFIC SAFETY RULES AND PRECAUTIONS 1. Only Natural gas or Propane (LP) ga s are approved for use with this furnace. Refer to the furnace rating plate or Section IV of these instructions. 2. Install this furnace only in a location and position as specified in SECTION I of these instructions. 3. A gas-fir[...]

268890-UIM-B-0607 Unitary Products Group 3 INSPECTION As soon as a unit is r eceived, it should be inspected for po ssible dam- age during transit. If damage is evident, the extent of the damage should be noted on the carrier ’ s freight bill. A separate request for inspection by the carrier ’s agent should be made in writing. Also, before inst[...]

268890-UIM-B-0607 4 Unitary Products Group Installation in a residential garage: 1. A gas-fired furnace for in stallation in a residential garage must be installed so the burner(s) and the ignition source are located not less than 18 inches (46 cm) above t he floor , and the furnace must be located or protected to avoi d physical damage by vehicles[...]

268890-UIM-B-0607 Unitary Products Group 5 Use the Example below to help you in calculating the duct area to deter- mine whether the ducts have sufficient area so that the furnace oper- ates at the specified external static pressure and within the air temperature rise specified on the nameplate. The following are general duct sizing guidelines that[...]

268890-UIM-B-0607 6 Unitary Products Group Downflow Air Co nditioning Coil Cabinet The Cooling Coil Cabinet can be used in place of the combustible floor base for downflow installations on co mbustible materials. The furnace should be installed with the cooling co il cabinet specifically intended fo r downflow applications. The cooling coil cabinet[...]

268890-UIM-B-0607 Unitary Products Group 7 RESIDENTIAL AND NON HUD MODULAR HOME DOWNFL OW AND HORIZONT AL RETURN PLENUM CONNECTION The return duct system must be connected to the furnace inlet and the return duct system must terminate outside the space containing the fur- nace. When replacing an existing fur nace, if the existing plenum is not the [...]

268890-UIM-B-0607 8 Unitary Products Group Downflow Filt ers Downflow furnaces typically are inst alled with the filters located above the furnace, extending into the re turn air plenum or duct. Any branch duct (rectangular or round duct) attached to the plenum must att ach to the vertical plenum above the filter height. Filters(s) may be located i[...]

268890-UIM-B-0607 Unitary Products Group 9 SECTION IV: GAS PIPING GAS SAFETY IMPORT ANT : Plan your gas supply before determining the correct gas pipe entry . Use 90-degree service el bow(s), or short nipples and con- ventional 90-degree elbow(s) to enter throug h the cabinet access holes. GAS PIPING INST ALLA TION Properly sized wrought iron, appr[...]

268890-UIM-B-0607 10 Unitary Products Group SECTION V: ELECTRICAL POWER ELECTRICAL POWER CONNECTIONS Field wiring to the unit must be grounded. Electric wires that are field installed shall conform to the temper ature limitation for 63°F (35°C) rise wire when installed in accordance with instruct ions. Refer to T able 7 in these instructions for [...]

268890-UIM-B-0607 Unitary Products Group 11 SUPPL Y V OL T AGE CONNECTIONS IMPORT ANT : The power con nection leads and wirin g box may be relo - cated to the left side of the furnace . Remove the scre ws and cut wire tie holding excess wiring. Reposition on t he left side of the furnace and fas- ten using holes provided. 1. Provide a power supply [...]

268890-UIM-B-0607 12 Unitary Products Group FIGURE 1 1: Thermostat Chart AC1 Single Stage A/C w/Single Stage Furnace, 1 Stage Cooling Ready - (G,L)*8/9S, XYF80-U, XYF80-U*L, XYF90-U HM1 Humidistat Thermostat Installer Setup Number 1 - System Type - must be set to 0 Selection of GAS/ELEC switch on thermostat not necessary Thermostat Installer Setup [...]

268890-UIM-B-0607 Unitary Products Group 13 ACCESSOR Y CONNECTIONS The furnace control will allow power -switching control of va rio us acces- sories. Refer to Figure 12 , for connectio n details. ELECTRONIC AIR CL EANER CONNECTION T wo 1/4” (0.64 cm) spade terminals (EAC and NEUTR AL) for electronic air cleaner connections are located on the con[...]

268890-UIM-B-0607 14 Unitary Products Group Single-Wire T winning Instru ctions Connect the control wiring as shown in the Figure 14. 1. Connect the low voltage wiring from the wall thermostat to the ter- minal strip on the control board of F urnace #1. 2. Connect a wire from the TWIN terminal of F urnace #1 to the TWIN terminal of Furnace #2. 3. I[...]

268890-UIM-B-0607 Unitary Products Group 15 COMBUSTION AIR/VENT PIPE SIZING The size of pipe required will be determined by the furnace model, the total length of pipe required and the number of elbows r equired. T able 8 lists the maximum equivalent length of pipe allowed for each model of furnace. The equivalent l ength of elbow s is shown in T a[...]

268890-UIM-B-0607 16 Unitary Products Group Dimensions are those requi red in Stand ard ASTM D-331 1. NOTE: Sidewall vent terminal may be used for sidewall vent termina- tions. Refer to part list in t he back of the USERS INFORMA TION AND SERVICE AND MA INTENANCE MANUAL for the terminal p art number . *. V ent pipe size must be increased to 3” di[...]

268890-UIM-B-0607 Unitary Products Group 17 VENT CLEARANCES † A vent shall not terminate directly above a sidewalk or pa ved driveway that is located between two single fa m ily dwellings and serves both dwellings. †† 12 inches (30 cm) up from the bot tom edge of the structure fo r T wo-pipe (direct vent) applicati ons per ANSI Z 223.1 / NFP [...]

268890-UIM-B-0607 18 Unitary Products Group VENT SY STEM This furnace is certified to be installed with one of two possible vent configurations. 1. Horizontal vent system. This vent system can be inst alled co m- pletely horizontal or combinations of horizontal, vertical, or offset using elbows. 2. V ertical vent system. This vent system can be ins[...]

268890-UIM-B-0607 Unitary Products Group 19 VERTICAL VENT APPLICA TIONS AND TERMINA TION Roof mounted vertical terminals ma y be field fabricated. S t andard PVC/ SRD fittings may be used. If installing a vertical venting system through any unconditioned space such as an a ttic or crawl space it must be insulated. 1. Observe all clearances listed i[...]

268890-UIM-B-0607 20 Unitary Products Group The combustion air intake pipe should be located either through the wall (horizontal or side vent) or through the roof (vertical vent). Care should be taken to locate side vent ed systems where trees or shrubs will not block or restrict suppl y air from entering the ter minal. Also, the terminal assembly [...]

268890-UIM-B-0607 Unitary Products Group 21 V ent and Su pply (Out side) Air Safety Check Procedure Follow the procedure in ANSI Z223.1 National Fuel Gas Code. Refer to the section on the “Recommended Procedure for Safety Inspection of an Existing Appliance” or in Canada B149.1-00 Natur al Gas and Pro- pane Installation Code section on “V ent[...]

268890-UIM-B-0607 22 Unitary Products Group Specially Engineered Inst a llations The above requirements shall be permi tted to be waived where special engineering, approved by the authority having jurisdiction, provides an adequate supply of air for combustion , ventilation and dilution of flue gases. SECTION VIII: CONDENSA TE PIPING CONDENSA TE DR[...]

268890-UIM-B-0607 Unitary Products Group 23 Horizontal Lef t Air Flow (Inducer Low) - Refer to Figures 31 & 32 1. Remove all the condensate hoses inside the furnace, leaving the 3/8" barbed nipple and hose # 4, both factory installed, in the rain gutter . 2. Remove the condensate trap and its bracket from inside the fur- nace, saving the s[...]

268890-UIM-B-0607 24 Unitary Products Group FIGURE 31: Horizontal Left Condensate Drain Hose Configuration CUT FROM HOSE #5 (1-1/2” long) HOSE #9 THIS TUBE FOR THE BLOCKED CONDENSA TE SWITCH MUST BE RELOCA TED FROM ITS ORIGINAL F ACTOR Y INST ALLED LOCA TION BEHIND THE COMBUSTION AIR PIPE TO THE T AP BEHIND THE DRAFT INDUCER. A SMALL HOSE IS INST[...]

268890-UIM-B-0607 Unitary Products Group 25 FIGURE 32: Horizontal Left Condensate Drain Hose Configuration RECOMMENDED CONDENSA TE TRAP ORIENT A TION HOSE #6 HOSE #4 3/8” BARBED TEE 3/8” BARBED NIPPLES 1-1/2” PIECE OF 3/8” HOSE HOSE #10 3/4” 2” 1/2” HOSE #4 SPRING CLAMP 1” SPRING CLAMP 1” 2-3/4” 22-1/8” HOSE #8* DOG LEG *USED [...]

268890-UIM-B-0607 26 Unitary Products Group Horizontal Right Air Flow (Inducer High) Refer to Figures 33-36 Installation with condensate trap bracket (Front of casing): Refer to Figure 33 & 34 1. Remove the 2" knockout on the casing side, away from the inducer motor . 2. Remove all the condensate hoses inside the furnace, including the 3/8[...]

268890-UIM-B-0607 Unitary Products Group 27 FIGURE 33: Horizontal Right Condensate Drain Hose Co nfiguration (Option 1 - Front of Casing) HOSE #2 HOSE #7 THIS TUBE FOR THE BLOCKED CONDENSA TE SWITCH HAS BEEN F ACTOR Y INST ALLED FOR THIS POSITION. HOSE #9 HOSE #4 3/8” BARBED TEE[...]

268890-UIM-B-0607 28 Unitary Products Group FIGURE 34: Horizontal Right Condensate Drain Hose Co nfiguration (Option 1 - Front o f Casing) HOSE #9 3/4” 33” 3/4” 1-5/8” 3/4” 2” 1/2” HOSE #4 SPRING CLAMP 3/4” 3/4” HOSE #7 21” SPRING CLAMP 3/4” 17-1/2” 3/8” HOSE #2 DOG-LEG 1” SPRING CLAMP 1” 2-3/4” 22-1/8” HOSE #8* DO[...]

268890-UIM-B-0607 Unitary Products Group 29 FIGURE 35: Horizontal Right Condensate Drain Hose Co nfiguration (Option 2 - Back of Casin g) HOSE #2 CUT FROM HOSE #1 (2-1/2” long) HOSE #7 THIS TUBE FOR THE BLOCKED CONDENSA TE SWITCH HAS BEEN F ACT ORY INST ALLED FOR THIS POSITION. HOSE #9 HOSE #4 3/8” BARBED TEE 3-W A Y TRANSITION (Shown) (Provide[...]

268890-UIM-B-0607 30 Unitary Products Group FIGURE 36: Horizontal Right Condensate Drain Hose Co nfiguration (Option 2 - Back of Casin g) HOSE #9 3/4” 33” 3/4” 1-5/8” 3/4” 2” 1/2” HOSE #4 SPRING CLAMP 3/4” 3/4” HOSE #7 21” SPRING CLAMP 3/4” 17-1/2” 3/8” HOSE #2 DOG-LEG 1” SPRING CLAMP 1” 2-3/4” 22-1/8” HOSE #8* DOG[...]

268890-UIM-B-0607 Unitary Products Group 31 CONDENSA TE DRAIN TERMINA TION DO NOT terminate condensate drain in a chimney , or where the drain line may freeze. The line must term inate at an inside drain to prevent freezing of the condensate and po ssible pro perty damage. DO NOT trap the drain line at any other location than at the condensate drai[...]

268890-UIM-B-0607 32 Unitary Products Group There is an accessory kit (1PK060 1) available from Source 1, which has the following items: • 1 - 12” (30 cm) length x 1/ 8” (0.3 cm) diameter tubing • 2 – pieces of 4” (10 cm) leng th x 1/8” (0.3 cm) diam eter tubing • 1 - 5/ 16” (0.8 cm) tee • 1 – 5/16” (0.8 cm) x 1/8” (3.175 [...]

268890-UIM-B-0607 Unitary Products Group 33 In the USA use the following f ormula to calculate the furnace input. For natural gas multiply the heat content of the gas BTU/SCF or Default 1030 BTU /SCF (38.4 MJ/m 3 ), times 2 cubic ft. (0.056 m) of gas measured at the gas meter , times a barometric pressure and temperature corr ection factor of 0.960[...]

268890-UIM-B-0607 34 Unitary Products Group IMPORT ANT : The inlet gas pressure operating range table specifies what the minimum and maximum gas li ne presures must be for the fur- nace to operate safely . The gas line pressure MUST BE • 7” W.C. (1.74 kP A) for N atural Gas • 1 1” W.C. (2.74 kP A) for Propane (LP) Gas in order to obtain the[...]

268890-UIM-B-0607 Unitary Products Group 35 ADJUSTMENT OF TEMPERA TURE RISE The temperature rise, or temperature difference between the return air and the heated supply air from the furnace, must be within the range shown on the furnace rating plate and within the application limitations as shown in T able 7. After about 20 minutes of operation, de[...]

268890-UIM-B-0607 36 Unitary Products Group FURNA C E CONTROL DIA GNOSTICS The furnace has built-in, self-diagnostic capability . If a system problem occurs, a blinking LED shows a f ault code. The LED can flash red, green or amber to indicate various conditions. It is located behind a clear view port in the blower compartment door . The control co[...]

268890-UIM-B-0607 Unitary Products Group 37 NOTES: 1. Airflow expressed in st andard cubic feet per minute (CFM) and in cubic meters per minute (m 3 /min ). 2. Motor voltage at 1 15 V . 3. NR = Operation at this static pressure is not recommended. FIL TER PERFORMANCE The airflow capacity data published in T a ble 18 represents blower per- formance [...]

268890-UIM-B-0607 38 Unitary Products Group APPL YING FIL TER PRESSURE DROP TO DETERMINE SY STE M AIRFLO W T o determine the approximate a irflow of the unit with a filter in place, fol- low the steps below: 1. Select the filter type. 2. Determine the External System S tatic Pressure (ESP) without the filter . 3. Select a filter pressure drop from [...]

268890-UIM-B-0607 Unitary Products Group 39 SECTION XI: WI RING DIAGRAM FIGURE 41: Wiring Diagram[...]

Subject to change without notice. Printed in U.S.A. 268890-UIM-B-0607 Copyright © by York International Corp. 2007. All rights reserved. Supersedes: 268890-UIM-A-0407 Unitary 5005 Norman Product Y ork OK Group Drive 73069 NOTES[...]