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York GY9 - page 1
168106-PUM-A-1205 USER’S INFORMA TION, MAINTENANCE AND SER VICE MANU AL HIGH EFFICIENC Y TUBULAR HEA T EX CHANGER SERIES MODELS: GF9/GM9/ G Y9 (Single Stage Downflow/Horizontal) EFFICIENCY RATING CERTIFIED ISO 9001 Certified Quality Management System The manufacturer recommend s that the user read all sec- tions of this manual a nd keep the manua ...
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York GY9 - page 2
168106-PUM-A-1205 2 Unitary Products Group 7. NEVER . . .S tore flammable materials of any kind near your fur- nace. Gasoline, solvents, and ot her volatile liquids should be stored only in approved containers outside your home. These materials vaporiz e easily and are extremely dangerous. 8. NEVER . . .S tore cleaning materials near your furnace. ...
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York GY9 - page 3
168106-PUM-A-1205 Unitary Products Group 3 HOW Y OUR GAS FURNACE W ORKS Y o ur furnace is a very easy appliance to take for granted. Season after season, it sits there in your home, keeping you warm and comfortable. For this reason, you may neve r have given much thought to the way your furnace operates. In order to get the safest and most ef ficie ...
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York GY9 - page 4
168106-PUM-A-1205 4 Unitary Products Group FURNACE USER MAINTENANCE Blower Care Even with good filters properly in pl ace, blower wheels and motors will become dust laden after long months of operation. The entire blower assembly should be inspected annually . If the motor an d wheel are heavily coated with dust, they can be brushed and cleaned wit ...
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York GY9 - page 5
168106-PUM-A-1205 Unitary Products Group 5 Motor Lubrication The motors in these furnaces are permanently lubricated, and do not require periodic oiling. SECTION II: SER VICE AND MAINTE NANCE MANU AL SAFETY SECTION The following safety rules must be followed when s ervicing the furnace. FURNACE MAINTENANCE SECTION The furnace should be cleane d and ...
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York GY9 - page 6
168106-PUM-A-1205 6 Unitary Products Group Hot Surface Ignition System FURNACE CLEANING SECTION NOTE: The cleaning operations listed below must be p erformed only by a qualified service agency . Burner Removal/Clea ning The main burners should be checked periodically for dirt accumulation. If cleaning is required, follow this procedure: 1. T urn of ...
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York GY9 - page 7
168106-PUM-A-1205 Unitary Products Group 7 3 RED FLASHES: This indicates the normally open pressure switch contact did not close after the induc er was energized. This could be caused by a number of problems: faul ty inducer , blocked vent pipe, bro- ken pressure switch hose or faulty p ressure switch. 4 RED FLASHES: This indicates that a prim ary ...
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York GY9 - page 8
168106-PUM-A-1205 8 Unitary Products Group SECTION III: REPLACEMENT P ARTS LIST 61 7 13 11 2 27 17 34 29 32 54 5 66 71 70 43 43 9 37 44 26 14 10 31 35 18 74 53 15 16 1 64 56,57 21 20 22 49 42 51 6 41 30 28 5 14 48 25 4 2 46 58 47 50 24 17 71 54 59 60 6 42 10 36 19 65 79 23 14 44 30 9, 37 45 41 6 33 28 40 A A ...
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York GY9 - page 9
168106-PUM-A-1205 Unitary Products Group 9 ITEM DESCRIPTION MOTOR 1M O T O R , DIRECT DRIVE BLOWER 2 MOTOR, INDUCER ASS’Y ELECTRICAL 3 CAP ACITOR, RUN (7.5MFD/370V) CAP ACITOR, RUN (10MFD/370V) 4 SWITCH, LIMIT (INDUCER) 5 LIMIT , TEMPERA TURE (Primary) 6 LIMIT , FLAME ROLL-OUT 7 CONTROL, FURNACE MODULE 8* FUSE 9I G N I T E R 10 SENSOR, FLAME 1 1 ...
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York GY9 - page 10
168106-PUM-A-1205 10 Unitary Products Group FIELD INST ALLED ACCESSO RIES - NON-ELECTRICAL MODEL NO. DESCRIPTION USED WITH 1NP0347 PROP ANE (LP) CONVERSION KIT ALL MODELS 1CT0302 CONCENTRIC INT AKE/VENT 2” ALL MODELS EXCEPT 120 MBH 1CT0303 CONCENTRIC INT AKE/VENT 3” ALL MODELS 1PS0904 HIGH AL TITUDE PRESSURE SWITCH KIT (Does Not Include Orifice ...
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York GY9 - page 11
168106-PUM-A-1205 Unitary Products Group 11 SECTION IV: WIRING DIAGRAM FIGURE 9: Wiring Diagram ...
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York GY9 - page 12
Subject to change without notice. Printed in U.S.A. 168106-PUM-A-1205 Copyright © by Unitary Products Group 2005. All rights reserved. Supersedes: 165458-PUM-A-0905 Unitary 5005 Norman Product s Y ork OK Group Drive 73069 ...
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