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York LC8V*DH - page 1
271015-UUM-A-0407 USER’S INFORMA TION, MAINTENANCE AND SER VICE MANUAL HIGH EFFICIENC Y TUBULAR HEA T EX CHANGER SERIES MODELS : PV8*DH/FL8V*DH/FC8V*DH/LL8V*DH/LC8V*DH (V ariable Speed Do wnflow/Horizont al/Low NOx) EFFICIENCY RATING CERTIFIED ISO 9001 Certified Quality Management System The manufacturer recomm ends that the user read all se c- t ...
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York LC8V*DH - page 2
271015-UUM-A-0407 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 fu rnace. M ...
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York LC8V*DH - page 3
271015-UUM-A-0407 Unitary Products Group 3 HOW Y OUR GAS FURNA CE WORKS Y our 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 ficien ...
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York LC8V*DH - page 4
271015-UUM-A-0407 4 Unitary Products Group Every time the filters are changed the following items should be visually inspected: • Check vent pipe for blockage or leakage. • Check all components to be sure they are in good condition and that there are no obvious signs of deterioration. • Check for dirt or lint on any surfaces or on components. ...
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York LC8V*DH - page 5
271015-UUM-A-0407 Unitary Products Group 5 FURNACE CLEANING SECTION NOTE: The cleaning operations listed below must be performed only by a qualified service agency . Burner Remo val/Cleanin g The main burners should be checked per iodically for dirt accumulation. If cleaning is required, follow this procedure: 1. T urn off the electrical power to t ...
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York LC8V*DH - page 6
271015-UUM-A-0407 6 Unitary Products Group 5. 1st and 2nd S tage called simultaneously • The 1st stage call is processed as described in paragraph 1 above. • Once Flame Rectification is established, 2nd S tage is entered immediately as described in paragraph 2 above. 6. 1st and 2nd S tage satisfied simultaneously • Both stages of the Gas V al ...
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York LC8V*DH - page 7
271015-UUM-A-0407 Unitary Products Group 7 Continuous Blow er Operation The blower will run continuously whenever the wall thermostat fan switch is in the "ON" position. Th e furnace blower will run at the speed selected on the "F AN SPEED" jumpers on the main control board (HI COOL, LO COOL, HI HEA T or LO HE A T). When the jum ...
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York LC8V*DH - page 8
271015-UUM-A-0407 8 Unitary Products Group 4 RED FLASHES: This indicates that a prim ary or auxiliary limit switch has opened its normally closed contact s. With this fault code the control will operate the supply air blower and inducer . This condition may be caused by: dirty filter , improperly sized duct sy stem, incorrect blower speed setting, ...
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York LC8V*DH - page 9
271015-UUM-A-0407 Unitary Products Group 9 FIGURE 7: Furnace Control Event Schedule W2 SIGNAL ON CLOSED OPEN OPEN CLOSED ABSENT PRESENT HIGH INDUCER HIGH ST AGE PRESSURE SWITCH AND 2ND ST AGE MAIN V AL VE CIRCULA TOR HIGH HEA T SPEED 2ND ST AGE CALL HIGH HEA T AFTER LOW HEA T IS EST ABLISHED HIGH HEA T OFF DELA Y 30 SEC. HIGH LIMIT W1 SIGNAL LOW IN ...
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York LC8V*DH - page 10
271015-UUM-A-0407 10 Unitary Products Group SECTION III: REPLACEMENT P ARTS LIST 1 27 6,21 11 2 5 45 46 31 17 22 10 9 8 42 24 38 4 7 12,36 23 20 30 39 16 48 49,50 14 29 51 26 11 13 12 20 36 25 37 7 ...
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York LC8V*DH - page 11
271015-UUM-A-0407 Unitary Products Group 11 ITEM DESCRIPTION MOTOR 1 MOTOR/MODULE, ECM (Complete, Programmed) 1A ECM MOTOR MODULE (Programmed, less motor) 1B MOTOR, BLOWER (Less ECM Module) 2 MOTOR, VENT OR ASS’Y ELECTRICAL 3 4 CONTROL, HIGH LIMIT [LS1] 5 CONTROL, FURNACE [FC ] 6 IGNITOR 7 SENSOR, FLAME 8 SWITCH, AIR PRESSURE [1LP] 9 SWITCH, DOOR ...
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York LC8V*DH - page 12
271015-UUM-A-0407 12 Unitary Products Group TA B L E 2 : Field Installed Accessories - Non Electrical MODEL NO. DESCRIPTION USED WITH 1NP0347 PROP ANE (LP) CONVERSION KIT ALL MODELS 1PS0313 HIGH AL TITUDE PRESSURE SWITCH KIT* (Does Not Include Orifices) 57, 80, 100 MBH 1PS0314 120 MBH 1CB0314 COMBUSTIBLE FLOOR BASE FOR DOW NFLOW UNITS 14-1/2” (? ...
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York LC8V*DH - page 13
271015-UUM-A-0407 Unitary Products Group 13 SECTION IV: WIRING DIAGRAM FIGURE 8: Wiring Diagram ...
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York LC8V*DH - page 14
271015-UUM-A-0407 14 Unitary Products Group NOTES ...
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York LC8V*DH - page 15
271015-UUM-A-0407 Unitary Products Group 15 NOTES ...
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York LC8V*DH - page 16
Subject to change without notice. Printed in U.S.A. 271015-UUM-A-0407 Copyright © by York International Corp. 2007. A ll rights reserved. Supersedes: 167354-UUM-B-0806 Unitary 5005 Norman Product s Y ork OK Group Drive 73069 Limited Warranty UPG warrant s this produc t to be free from def ects in facto ry workmanshi p and material unde r normal us ...
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