Table of Contents
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USER'S INFORMATION,
MAINTENANCE AND
SERVICE MANUAL
HIGH EFFICIENCY SEALED COMBUSTION
GAS FURNACE
MODELS: DGAA and DGAH
(Single Stage Downflow Only)
CONTACT INFORMATION FOR USA . . . . . . . . . . . . . . . . . . . . . . . 1
CONTACT INFORMATION FOR CANADA . . . . . . . . . . . . . . . . . . . 1
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
While you are away . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SEASONAL SERVICE INFORMATION . . . . . . . . . . . . . . . . . . . . . . 2
Your Service Technician . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
WARRANTY AND RESPONSIBILITIES . . . . . . . . . . . . . . . . . . . . . 2
GAS SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Natural Gas Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Propane Gas Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
FURNACE INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Observing Burner Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
If Furnace Fails to Operate Properly . . . . . . . . . . . . . . . . . . . . . . . 3
HOW YOUR GAS FURNACE WORKS . . . . . . . . . . . . . . . . . . . . . . 4
IF FURNACE FAILS TO OPERATE PROPERLY . . . . . . . . . . . . . . 4
When You Call For Service Assistance . . . . . . . . . . . . . . . . . . . . . 4
To Contact Your Serviceman . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
to Start the Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
START-UP AND SHUTDOWN INSTRUCTIONS . . . . . . . . . . . . . . . 4
Operating Instructions: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
CONTACT INFORMATION FOR USA
• Contact us by mail:
DISTRIBUTED BY:
StyleCrest
801 W. 37th Street
Building #7
Wichita, Ks 67219
The manufacturer recommends that the user read all
sections of this manual and keep the manual for
future reference.
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.
Johnson Controls Unitary Products
TABLE OF CONTENTS
MANUFACTURED BY:
York International
5005 York Drive
Norman, OK 73069
For Installation In:
1.
Manufactured (Mobile) Homes
2.
Recreational Vehicles & Park Models
3.
Modular Homes & Buildings
To Turn Off the Appliance: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
FURNACE USER MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . .5
Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Removing Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Blower Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Motor Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
SERVICE AND MAINTENANCE MANUAL . . . . . . . . . . . . . . . . . . . . .6
SAFETY SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
FURNACE MAINTENANCE SECTION . . . . . . . . . . . . . . . . . . . . . .6
FURNACE CLEANING SECTION . . . . . . . . . . . . . . . . . . . . . . . . . .6
Burner Removal/Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Cleaning the Heat Exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
THE FURNACE CONTROLS AND THEIR FUNCTION . . . . . . . . . .6
SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Continuous Blower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Heating Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Hot Surface Ignition System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
FURNACE CONTROL DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . .8
REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
LIMITED WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
CONTACT INFORMATION FOR CANADA
• Go to website at www.york.com click on "contact", then click on
"contact form" and follow the instructions.
• Contact us by mail:
York International
Consumer Relations
5005 York Drive
Norman, OK 73069
SECTION I: 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 insulated space or when insula-
tion is added to be sure that the insulation material has been kept
away from the furnace.
3.
Follow the instructions exactly as shown on the OPERATING
INSTRUCTION LABEL or the Start-up and Shutdown Instructions
on Page 4 of this manual when lighting the furnace or turning the
furnace off.
4.
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.
5.
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.
129099-BUM-J-0112
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Summary of Contents for York International DGAA
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Page 1: Table Of Contents
SERVICE MANUAL HIGH EFFICIENCY SEALED COMBUSTION For Installation In: GAS FURNACE Manufactured (Mobile) Homes MODELS: DGAA and DGAH Recreational Vehicles & Park Models (Single Stage Downflow Only) Modular Homes & Buildings TABLE OF CONTENTS CONTACT INFORMATION FOR USA ..... . . 1 To Turn Off the Appliance: . -
Page 2: Safety
129099-BUM-J-0112 … NEVER Store flammable materials of any kind near your fur- VENT PIPE nace. Gasoline, solvents, and other volatile liquids should be FLUE BLOWER MOTOR stored only in approved containers outside your home. These COLLAR CAPACITOR materials vaporize easily and are extremely dangerous. BLOWER …... -
Page 3: Gas Supply
129099-BUM-J-0112 GAS SUPPLY Observing Burner Operation The gas supply to your home will either be Natural Gas or Propane gas. Observe burner to make sure it ignites. Observe color of flame. On natural gas the flame will burn blue with appreciably yellow tips. Your furnace will be factory equipped to operate on only one of these On Propane gas a yellow flame may be expected. -
Page 4: How Your Gas Furnace Works
129099-BUM-J-0112 HOW YOUR GAS FURNACE WORKS SAFETY INFORMATION Your furnace is a very easy appliance to take for granted. Season after Read the Instructions Below Before Trying to Start the season, it sits there in your home, keeping you warm and comfortable. Furnace For this reason, you may never have given much thought to the way your furnace operates. -
Page 5: Furnace User Maintenance
129099-BUM-J-0112 Do not operate the furnace, and call a certified dealer / servicing con- MAIN REGULATOR OUTLET (MANIFOLD) tractor to check and / or clean your furnace, or for more information if ADJUSTMENT PRESSURE TAP you have questions about the operation of your furnace. 90°... -
Page 6: Service And Maintenance Manual
129099-BUM-J-0112 SECTION II: SERVICE AND MAINTENANCE Remove the screws that hold the burner assembly to the combus- MANUAL tion air box and remove the assembly. SAFETY SECTION Remove burner from the burner assembly. Rinsing in hot water may clean burners. This section has been designed to assist a qualified service agency in Reassemble in the reverse order. -
Page 7: Sequence Of Operation
129099-BUM-J-0112 SEQUENCE OF OPERATION TRANSFORMER Continuous Blower LINE VOLTAGE BLACK - HIGH SPEED On cooling/heating thermostats with fan switch, when the fan switch is RED -LOW SPEED set in the ON position, a circuit is completed between terminals R and G of the thermostat. -
Page 8: Furnace Control Diagnostics
129099-BUM-J-0112 FURNACE CONTROL DIAGNOSTICS 3 FLASH: Combustion air pressure switch failed to close, this indicates the normally open pressure switch contact did not close at the begin- The furnace has built-in, self diagnostic capability. If a system problem ning of the heat cycle. This could be caused by a number of problems; occurs, a fault code is shown by a blinking green LED. -
Page 9: Replacement Parts List
129099-BUM-J-0112 SECTION III: REPLACEMENT PARTS LIST All components, assemblies, accessories, and replacement parts for this furnace are available through your qualified service installer or refer to the service center list in your booklet. It is not recommended that the homeowner purchase, install, or replace any components of this furnace. Contact your local contactor, dealer, or service provider for additional information. - Page 10 2. For Serial Numbers lower then 001207164- Replacement DGAA motors also require Motor Mount Assembly 373-19806-100 if replaced motor has integral, flex-arm motor mount. 3. DGAA with 5-Ton Blowers are provided as an accessory item and are not standard equipment from the factory. See Page 4 4.
- Page 11 MODEL NATURAL GAS S1-9951-1361 S1-9951-1541 S1-9951-1611 S1-9951-1771 LP GAS S1-9951-0821 S1-9951-0931 S1-9951-0981 S1-9951-1061 ACCESSORY PARTS LIST ACCESSORY DESCRIPTION DGAA DGAH Door Panel (Upper) 7900-7631 7900-7631 Motor S1-02431975000 S1-02431975000 5-Ton Blower Ass’y 7900-7751 Run Capacitor (20 MFD) S1-02420051000 S1-02420051000 Motor Mount...
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Page 12: Wiring Diagram
129099-BUM-J-0112 SECTION IV: WIRING DIAGRAM FIGURE 8: Wiring Diagram - DGAA Johnson Controls Unitary Products... - Page 13 129099-BUM-J-0112 FIGURE 9: Wiring Diagram - DGAH Johnson Controls Unitary Products...
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Page 14: Limited Warranty
Furnace Model Heat Exchanger Parts Coverage Labor and Trip Coverage* DGAA, DGAH 10 years 2 years 1 years The warranty period for any replacement heat exchanger or part provided here under shall not extend beyond the warranty period stated above. The heat exchanger warranty is on a parts only basis: no labor, freight or other service charges are allowed.