Table of Contents
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USER'S INFORMATION,
MAINTENANCE AND
SERVICE MANUAL
HIGH EFFICIENCY
TUBULAR HEAT EXCHANGER SERIES
MODELS: GY8S*UH/GM8S*UH/GR8S/LY8S*UH/LM8S*UH/LF8*UH
(Single Stage Upflow / Horizontal / LowNOx)
CONTACT INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
USER'S INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
FURNACE INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
HOW YOUR GAS FURNACE WORKS . . . . . . . . . . . . . . . . . . . . . . 3
START-UP AND SHUTDOWN INSTRUCTIONS . . . . . . . . . . . . . . . 3
Operating Instructions: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
To Turn Off the Appliance: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
FURNACE USER MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . 4
Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Removing Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Blower Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Motor Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SERVICE AND MAINTENANCE MANUAL . . . . . . . . . . . . . . . . . . . . 5
CONTACT INFORMATION
• Go to website at www.york.com click on "contact", then click on "contact form" and follow the instructions.
• Contact us by mail:
The manufacturer recommends that the user read all sec-
tions of this manual and keep the manual for future refer-
ence.
FIRE OR EXPLOSION HAZARD - Failure to follow safety
warnings exactly could result in serious injury, death, or prop-
-
Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
-
WHAT TO DO IF YOU SMELL GAS:
•
Do not try to light any appliance.
•
Do not touch any electrical switch; do not use any phone
(including cell phone) in your building.
•
Leave the building immediately.
•
Immediately call your gas supplier from a neighbor's
phone. Follow the gas supplier's instructions.
•
If you cannot reach your gas supplier, call the fire depart-
ment.
-
Installation and service must be performed by a quali-
fied installer, service agency or the gas supplier.
TABLE OF CONTENTS
SAFETY SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
FURNACE MAINTENANCE SECTION . . . . . . . . . . . . . . . . . . . . . . .5
FURNACE CLEANING SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Burner Removal/Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Cleaning the Heat Exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Continuous Blower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Intermittent Blower - Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Heating Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Hot Surface Ignition System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
FURNACE CONTROL DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . .7
DIAGNOSTIC FAULT CODE STORAGE AND RETRIEVAL . . . . . .8
REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
REPLACEMENT PART CONTACT INFORMATION . . . . . . . . . . . . .10
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
York International
Consumer Relations
5005 York Drive
Norman, OK 73069
SECTION I: USER'S INFORMATION
SAFETY
1.
The furnace area must be kept clear and free of combustible mate-
rials, gasoline and other flammable vapors and liquids.
2.
Insulating materials may be combustible. The furnace must be
kept free and clear of insulating materials. The furnace area must
be examined when installed in an attic or other insulated space or
when insulation is added to be sure that the insulation material has
been kept away from the furnace.
3.
The furnace needs air for combustion in order to operate properly
and safely. Do not block or obstruct air openings on the furnace,
air openings to the area where the furnace is installed, or spaces
around the furnace.
4.
Follow the instructions exactly as shown on the OPERATING
INSTRUCTION LABEL or the Start-up and Shutdown Instructions
on Page 3 of this manual when lighting the furnace or turning the
furnace off.
5.
Should the gas supply fail to shut off or if overheating occurs, shut
off the gas valve to the furnace before shutting off the electrical
supply.
6.
Do not use this furnace if any part has been under water. A flood-
damaged furnace is extremely dangerous. Attempts to use the fur-
nace can result in fire or explosion. A qualified service agency
should be contacted to inspect the furnace and replace all gas
controls, control system parts, electrical parts that have been wet
or the furnace if deemed necessary.
EFFICIENCY
RATING
CERTIFIED
ISO 9001
Certified Quality
Management System
268893-UUM-A-0407
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Table of Contents
Related Manuals for York GY8S Series
Summary of Contents for York GY8S Series
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Page 1: Table Of Contents
USER’S INFORMATION, MAINTENANCE AND EFFICIENCY RATING CERTIFIED SERVICE MANUAL HIGH EFFICIENCY ISO 9001 Certified Quality TUBULAR HEAT EXCHANGER SERIES Management System MODELS: GY8S*UH/GM8S*UH/GR8S/LY8S*UH/LM8S*UH/LF8*UH (Single Stage Upflow / Horizontal / LowNOx) TABLE OF CONTENTS CONTACT INFORMATION ....... 1 SAFETY SECTION . -
Page 2: Instructions For Examining The Furnace Installation
REMOVE PANEL REMOVE TO EXAMINE 4 EXAMINE PANEL EXAMINE BURNER FURNACE TO EXAMINE FURNACE FLAMES CASING BURNER CASING FLAMES EXAMINE EXAMINE RETURN AIR RETURN AIR DUCT DUCT CONNECTION CONNECTION (side or bottom) FIGURE 3: Furnace Examination Checkpoints Unitary Products Group... -
Page 3: How Your Gas Furnace Works
GROUNDED JOINT UNION DRIP MAY BE INSTALLED Turn on all electric power to the appliance. INSIDE OR OUTSIDE UNIT. 10. Set thermostat to the desired setting. Burner will light, which may take 30-60 seconds. FIGURE 6: Upflow Gas Piping Unitary Products Group... -
Page 4: Furnace User Maintenance
Be sure to shake off excess water and allow filter to the same size as those recommended in Table 1. Never operate your completely dry before re-installing the filter. furnace without a suitable air filter. Unitary Products Group... -
Page 5: Blower Care
(upflow only). On downflow models, the vent ing. Reconnect wires correctly. pipe is secured to the vent motor outlet with a screw. Remove this • Verify proper operation after servicing. screw before proceeding. Unitary Products Group... -
Page 6: Sequence Of Operation
If the problem has not been corrected the furnace will again lockout immediately restart. after three retries. Unitary Products Group... -
Page 7: Hot Surface Ignition System
Low flame signal warning starts at 1.5 microamps. inducer motor and supply air blower. A gas valve that leaks through or Low flame signal control lockout point is is slow closing would typically cause this fault. 0.1 microamps DC (µa) Unitary Products Group... -
Page 8: Diagnostic Fault Code Storage And Retrieval
Thermostat Calling for Heat (Seconds) Fan on Delay 30 Seconds THERMOSTAT INDUCER 15 Sec. Post Purge IGNITOR MAIN VALVE HUMIDIFIER ELECTRONIC AIR CLEANER CIRCULATING BLOWER 60, 90, 120, 180 SEC. Selectable Fan Off Delay FIGURE 10: Furnace Control Event Schedule Unitary Products Group... -
Page 9: Replacement Parts List
1BR0221 BOTTOM RETURN FILTER KIT 1-4” FILTER 21” CABINETS 1BR0124 BOTTOM RETURN FILTER KIT 1” FILTER 24-1/2” CABINETS 1BR0224 BOTTOM RETURN FILTER KIT 1-4” FILTER 24-1/2” CABINETS 1HF0801 INTERNAL FILTER KIT WITH 1” FIBER FILTER ALL MODELS Unitary Products Group... -
Page 10: Replacement Part Contact Information
Click on the “Brand Links” button b. Click on the “Customer Service” button • You can contact us by mail. Just send a written request to: York International Consumer Relations 5005 York Drive Norman, OK 73069 Unitary Products Group... -
Page 11: Wiring Diagram
268893-UUM-A-0407 SECTION IV: WIRING DIAGRAM FIGURE 11: Wiring Diagram Unitary Products Group... -
Page 12: Uum-A
Limited Warranty UPG warrants this product to be free from defects in factory workmanship and material under normal use and service and will, at its option, repair or replace any parts that prove to have such defects according to the terms outlined on this warranty. This warranty covers only the equipment described by the Product Model Number and Serial Number listed on the Warranty Registration Card.