Johnson Controls Unitary Products 5165697-BUM-C-0818
USER’S INFORMATION,
MAINTENANCE AND
SERVICE MANUAL
SEALED COMBUSTION GAS FURNACE
MODELS: DGAA and DGAH SERIES
(Single Stage Downflow Only)
For Installation In:
1.Manufactured (Mobile) Homes
2.Recreational Vehicles & Park Models
3.Modular Homes & Buildings
TABLE OF CONTENTS
CONTACT INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SEASONAL SERVICE INFORMATION . . . . . . . . . . . . . . . . . . . . . .2
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
WARRANTY AND RESPONSIBILITIES . . . . . . . . . . . . . . . . . . . . .2
GAS SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
INSTRUCTIONS FOR EXAMINING
THE FURNACE INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
HOW YOUR GAS FURNACE WORKS . . . . . . . . . . . . . . . . . . . . . .4
IF FURNACE FAILS TO OPERATE PROPERLY . . . . . . . . . . . . . .4
SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
START-UP AND SHUTDOWN INSTRUCTIONS . . . . . . . . . . . . . . . 4
FURNACE USER MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . 5
SERVICE AND MAINTENANCE MANUAL . . . . . . . . . . . . . . . . . . . . 6
SAFETY SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
FURNACE MAINTENANCE SECTION . . . . . . . . . . . . . . . . . . . . . 6
FURNACE CLEANING SECTION . . . . . . . . . . . . . . . . . . . . . . . . . 6
THE FURNACE CONTROLS AND THEIR FUNCTION . . . . . . . . . 6
SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
FURNACE CONTROL DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . 8
REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
CONTACT INFORMATION
• Go to website at www.york.com, then click on “Contact Us” and
follow the instructions.
• Contact us by mail:
Johnson Controls Unitary Products
Consumer Relations
5005 York Drive
Norman, OK 73069
We recommend that the user read all sections of this
manual and keep the manual for future reference.
SECTION I: SAFETY
This is a safety alert symbol. When you see this symbol on
labels or in manuals, be alert to the potential for personal
injury.
Understand and pay particular attention to the signal words DANGER,
WARNING, or CAUTION.
DANGER indicates an imminently hazardous situation, which, if not
avoided, will result in death or serious injury.
WARNING indicates a potentially hazardous situation, which, if not
avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation, which, if not
avoided may result in minor or moderate injury. It is also used to
alert against unsafe practices and hazards involving only property dam-
age.
WARNING
Cancer and Reproductive Harm – www.P65Warnings.ca.gov
!
WARNING
FIRE OR EXPLOSION HAZARD - Failure to follow safety warnings
exactly could result in serious injury, death, or property 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. Fol-
low the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire department.
— Installation and service must be performed by a qualified
installer, service agency or the gas supplier.
!
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