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USER'S INFORMATION,
MAINTENANCE AND
SERVICE MANUAL
HIGH EFFICIENCY
TUBULAR HEAT EXCHANGER SERIES
MODELS: PT8*DH/FL8T*DH/FC8T*DH/LL8T*DH/LC8T*DH
(Two Stage Downflow/Horizontal/Low NOx)
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 . . . . . . . . . . . . . . . . . . . . . . . . . 3
Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Removing Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Blower Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Motor Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
SERVICE AND MAINTENANCE MANUAL . . . . . . . . . . . . . . . . . . . . 4
SAFETY SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
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-
erty damage.
-
Do 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 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
FURNACE MAINTENANCE SECTION . . . . . . . . . . . . . . . . . . . . . . .4
FURNACE CLEANING SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Burner Removal/Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Cleaning the Heat Exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
ADJUSTMENT OF FAN CONTROL SETTINGS . . . . . . . . . . . . . . . .6
Heating Indoor Fan Off Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Continuous Blower Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Hot Surface Ignition System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
FURNACE CONTROL DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . .7
DIAGNOSTIC FAULT CODE STORAGE AND RETRIEVAL . . . . . .7
REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
REPLACEMENT PART CONTACT INFORMATION . . . . . . . . . . . . .10
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
LIMITED WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
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
272357-UUM-A-0407
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Table of Contents
Related Manuals for York PT8 DH Series
Summary of Contents for York PT8 DH Series
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Page 1: Table Of Contents
SAFETY SECTION ........4 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:... -
Page 2: Instructions For Examining The Furnace Installation
272357-UUM-A-0407 INSTRUCTIONS FOR EXAMINING THE FURNACE VENT PIPE INSTALLATION FLUE COLLAR It is the owner’s responsibility to ensure that an annual inspection of the entire heating portion of the unit is made by a qualified service agency. ELECTRICAL JUNCTION BOX CONTROL Examine the furnace as outlined below in steps “1 - 6”... -
Page 3: How Your Gas Furnace Works
272357-UUM-A-0407 HOW YOUR GAS FURNACE WORKS To Turn Off the Appliance: Set the thermostat to lowest setting. Your furnace is a very easy appliance to take for granted. Season after season, it sits there in your home, keeping you warm and comfortable. Turn off all electric power to the appliance if service is to be per- For this reason, you may never have given much thought to the way formed. -
Page 4: Air Filters
272357-UUM-A-0407 Every time the filters are changed the following items should be visually Blower Care inspected: Even with good filters properly in place, blower wheels and motors will • Check vent pipe for blockage or leakage. become dust laden after long months of operation. The entire blower assembly should be inspected annually. -
Page 5: Cleaning The Heat Exchanger
272357-UUM-A-0407 Remove the upper access panel and remove the burner box cover. Disconnect wires from flame sensor, rollout switch and HSI igniter. Remove igniter carefully, as it is easily broken. Label all wires prior to disconnection when servicing Remove the screws that hold the burner box assembly to the vest controls. -
Page 6: Adjustment Of Fan Control Settings
272357-UUM-A-0407 1st and 2nd Stage called simultaneously Call for Cooling • The 1st stage call is processed as described in paragraph 1 • The thermostat closes two circuits R to Y and R to G. Since the above. Outdoor Unit is connected to Y and C at the Control, it is ener- gized. -
Page 7: Furnace Control Diagnostics
272357-UUM-A-0407 FURNACE CONTROL DIAGNOSTICS 9 RED FLASHES: Indicates reversed line voltage polarity or grounding problem. Both heating and cooling operations will be affected. Check The furnace has built-in, self-diagnostic capability. If a system problem polarity at furnace and branch. Check furnace grounding. Check that occurs, a blinking LED shows a fault code. - Page 8 272357-UUM-A-0407 W2 SIGNAL HIGH INDUCER HIGH STAGE PRESSURE SWITCH AND 2ND STAGE MAIN VALVE CIRCULATOR HIGH HIGH HEAT SPEED HEAT DELAY 30 SEC. CALL HIGH HEAT AFTER LOW HEAT IS ESTABLISHED 2ND STAGE CLOSED HIGH LIMIT OPEN W1 SIGNAL INDUCER CLOSED LOW STAGE PRESSURE...
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Page 9: Replacement Parts List
272357-UUM-A-0407 SECTION III: REPLACEMENT PARTS LIST 49,50 6,21 12,36 TABLE 2: Field Installed Accessories - Non Electrical FIELD INSTALLED ACCESSORIES - NON-ELECTRICAL MODEL NO. DESCRIPTION USED WITH 1NP0347 PROPANE (LP) CONVERSION KIT ALL MODELS 1PS0313 40, 60, 80, 100 MBH HIGH ALTITUDE PRESSURE SWITCH KIT* (Does Not Include Orifices) 1PS0314... -
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
272357-UUM-A-0407 SECTION IV: WIRING DIAGRAM FIGURE 8: Wiring Diagram Unitary Products Group... -
Page 12: Limited Warranty
For Owner's Information: PRODUCT MODEL. NO. ____________________ INSTALLATION DATE ______________________________ UNIT SERIAL NO. _________________________ INSTALLING DEALER ______________________________ Subject to change without notice. Printed in U.S.A. 272357-UUM-A-0407 Copyright © by York International Corp. 2007. All rights reserved. Supersedes: 167351-UUM-C-0806 Unitary 5005 Norman...