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DD80TN / DR80TN
Gas Furnace
CATEGORY I
These furnaces comply with requirements embod-
ied in the American National Standard / National
Standard of Canada ANSI Z21.47·CSA-2.3 Gas Fired
Central Furnaces.
ATTENTION INSTALLING PERSONNEL
As a professional installer you have an obligation to know
the product better than the customer. This includes all safety
precautions and related items.
Prior to actual installation, thoroughly familiarize yourself
with this Instruction Manual. Pay special attention to all safe-
ty warnings. Often during installation or repair it is possible
to place yourself in a position which is more hazardous than
when the unit is in operation.
Remember, it is your responsibility to install the product
safely and to know it well enough to be able to instruct a
customer in its safe use.
Safety is a matter of common sense...a matter of thinking
before acting. Most dealers have a list of specific good safe-
ty practices...follow them.
The precautions listed in this Installation Manual are intend-
ed as supplemental to existing practices. However, if there is
a direct conflict between existing practices and the content of
this manual, the precautions listed herein take precedence.
This furnace may be paired with a cooling unit that uses
R-32 refrigerant. If the refrigeration unit paired with this
furnace does not use R-32, the R-32 function in the furnace
control board needs to be turned off. Please see the
electrical and the R-32 sections for more details.
Refrigerant systems other than 410A or R32 may require
an additional mitigation control board. Refer to the
installation manual of the indoor evaporator coil to
determine installation requirements for that supplier's
refrigerant detection system.
Our continuing commitment to quality products may mean a change in specifications without notice.
© 2024
IOD-2036B
12/2024
Installer:
Affix all manuals
adjacent to the unit.
WARNING
19001 Kermier Rd., Waller, TX 77484
ONLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL,
ADJUST, SERVICE, MAINTENANCE OR REPAIR
(HEREINAFTER, "SERVICE") THE EQUIPMENT SPECIFIED IN
THIS MANUAL SHOULD SERVICE THE EQUIPMENT.
THIS EQUIPMENT IS NOT INTENDED FOR USE BY
PERSONS (INCLUDING CHILDREN) WITH REDUCED
PHYSICAL, SENSORY OR MENTAL CAPABILITIES, OR LACK
OF EXPERIENCE AND KNOWLEDGE, UNLESS THEY HAVE
BEEN GIVEN SUPERVISION OR INSTRUCTION CONCERNING
USE OF THE APPLIANCE BY A PERSON RESPONSIBLE FOR
THEIR SAFETY.
CHILDREN SHOULD BE SUPERVISED TO ENSURE THAT
THEY DO NOT PLAY WITH THE EQUIPMENT.
THE MANUFACTURER WILL NOT BE RESPONSIBLE FOR
ANY INJURY OR PROPERTY DAMAGE ARISING FROM
IMPROPER SUPERVISION, SERVICE OR SERVICE
PROCEDURES. IF YOU SERVICE THIS UNIT, YOU ASSUME
RESPONSIBILITY FOR ANY INJURY OR PROPERTY
DAMAGE WHICH MAY RESULT. IN ADDITION, IN
JURISDICTIONS THAT REQUIRE ONE OR MORE LICENSES
TO SERVICE THE EQUIPMENT SPECIFIED IN THIS
MANUAL, ONLY LICENSED PERSONNEL SHOULD SERVICE
THE EQUIPMENT. IMPROPER SUPERVISION, INSTALLATION,
ADJUSTMENT, SERVICING, MAINTENANCE OR REPAIR OF
THE EQUIPMENT SPECIFIED IN THIS MANUAL, OR
ATTEMPTING TO INSTALL, ADJUST, SERVICE OR REPAIR
THE EQUIPMENT SPECIFIED IN THIS MANUAL WITHOUT
PROPER SUPERVISION OR TRAINING MAY RESULT IN
PRODUCT DAMAGE, PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH.
DO NOT BYPASS SAFETY DEVICES.
AS A SAFETY PRECAUTION.
*NOTE: Please contact your distributor or our website for the
applicable Specification Sheet referred to in this manual.
80% HEX
wwww.daikincomfort.com
INSTALLATION INSTRUCTIONS
WARNING
WARNING
RECOGNIZE THIS SYMBOL
DO NOT LIFT
PRODUCT USING
HEAT EXCHANGER
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Related Manuals for Daikin DD80TN
Summary of Contents for Daikin DD80TN
- Page 1 INSTALLATION INSTRUCTIONS DD80TN / DR80TN WARNING Gas Furnace CATEGORY I ONLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL, ADJUST, SERVICE, MAINTENANCE OR REPAIR (HEREINAFTER, “SERVICE”) THE EQUIPMENT SPECIFIED IN THIS MANUAL SHOULD SERVICE THE EQUIPMENT. THIS EQUIPMENT IS NOT INTENDED FOR USE BY...
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Page 2: Table Of Contents
TABLE OF CONTENTS Combustion products must be discharged to the outdoors. Connect this furnace to an approved vent system only, as specified in Category 1 Venting section of this manual. Safety Considerations ........... 2 Product Application ............4 Never test for gas leaks with an open flame. Use a com- Location Requirements &... -
Page 3: Additional Safety Considerations
RISQUE D'EMPOISONNEMENT AU MONOXYDE Advertencia especial para la instalación de calentadores ó manejadoras de aire en áreas cerradas como estacionamientos ó cuartos de servicio. Ce�e ven�la�on est nécessaire pour éviter le danger d Las emisiones de monóxido de carbono pueden circular a través au CO pouvant survenir si un appareil produisant du m del aparato cuando se opera en cualquier modo. -
Page 4: Electrostatic Discharge (Esd) Precautions
The carrier is responsible for making prompt inspection of This furnace can be used in the following non-industrial damage and for a thorough investigation of each claim. The commercial applications: distributor or manufacturer will not accept claims from deal- Schools, Office Buildings, Churches, Retail Stores, ers for transportation damage. -
Page 5: Location Requirements And Considerations
DD80TN models may be installed in the Downflow position WARNING as well as Horizontal Left & Horizontal Right positions. To prevent property damage, personal injury, or death due to fire, do not install this furnace in a mobile home, trailer, or WARNING recreational vehicle. -
Page 6: Installation Positions
DR80TN model furnaces may be installed vertically (upflow) • Counterflow installation over a noncombustible floor. or horizontally with left or right side down. DD80TN model Before setting the furnace over the plenum opening, furnaces may be installed vertically (downflow) or horizontally ensure the surface around the opening is smooth and with left or right side down. -
Page 7: Horizontal Installation
Horizontal Installation For upflow and horizontal installations, the furnace and/ or indoor coil should be installed so that the equipment is Line contact to framing is permitted when installed in the hor- at least 1-1/2 inches above the drain pan. Do not install izontal configuration. -
Page 8: Existing Furnace Removal
Existing Furnace Removal Thermostat Location In an area having good air circulation, locate the thermostat WARNING about five feet high on a vibration-free inside wall. Do not install the thermostat where it may be influenced by any of CARBON MONOXIDE POISONING HAZARD the following: Failure to follow the steps outlined below for each •... -
Page 9: Category I Venting (Vertical Venting)
The DR80TN and DD80TN furnaces are provided with a Furnaces are shipped with the induced draft blower dis- combustion air intake pipe kit which adds a combustion air charging from the top of the furnace. (“Top” is as viewed for intake pipe instead of relying on the louvers for combustion an upflow installation.) The induced draft blower on DR80TN... -
Page 10: Masonry Chimneys
Counterflow units are shipped with the induced draft blow- er discharging from the top of the furnace. (“Top” as viewed WARNING for a counterflow installation.) HIGH VOLTAGE! Vent the furnace in accordance with the National Fuel Gas To avoid risk of injury, electrical shock or death, the furnace must be electrically grounded in Code NFPA54/ANSI Z223.1 - latest edition. -
Page 11: Junction Box Relocation
Junction Box Relocation CAUTION WARNING To prevent unreliable operation or equipment damage, the inlet gas supply pressure must be as specified on the unit Edges of sheet metal holes may be sharp. Use gloves as a rating plate with all other household gas fired appliances precaution when removing hole plugs. -
Page 12: Propane Gas Conversion
Propane Gas Conversion • Install a drip leg to trap dirt and moisture before it can enter the gas valve. The drip leg must be a minimum of three inches long. WARNING • Use two pipe wrenches when making connection to the gas valve to keep it from turning. -
Page 13: Gas Piping Checks
Gas Piping Checks Complete information regarding tank sizing for vaporiza tion, recommended regulator settings, and pipe sizing is avail- Before placing unit in operation, leak test the unit and gas able from most regulator manufacturers and propane gas connections. suppliers. Use a pipe thread compound that is approved for natural WARNING gas and LP Gas. -
Page 14: Circulating Air
Circulating Air When the furnace is installed without a cooling coil, it is rec- ommended that a removable access panel be provided in the outlet air duct. This opening shall be accessible when the furnace is installed and shall be of such a size that the WARNING heat exchanger can be viewed for visual light inspection or such that a sampling probe can be inserted into the air... -
Page 15: Upright Installations
Too much external static pressure will result in insufficient air Upright Installations that can cause excessive temperature rise. This can cause limit switch tripping and heat exchanger failure. Depending on the installation and/or customer preference, differing filter arrangements can be applied. Filters can be To determine total external duct static pressure, proceed as installed in the central return register or a side panel external follows:... -
Page 16: Fossil Fuel Applications
Thermostat Wiring Diagrams Duty Cycle % Heating Stage Timing Demand 0-38 Light Stage, 12 minute 2 Stage ROOM THERMOSTAT 39-50 Light to Average Stage, 10 minute 2 Stage 51-62 Average Stage, 7 minute 2 Stage 63-75 Average to Heavy Stage, 5 minute 2 Stage INTEGRATED FURNACE W/W1... - Page 17 A daikin accessory control board kit. if an servicing or changing any electrical wiring. electronic air cleaner is already installed in the duct work and not connected to the accessory control board, it will have to be disabled or removed.
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Page 18: Field-Installed Accessories
24 VOLT VENTILATION (OPTIONAL) 24 VOLT A2L ALARM (OPTIONAL)) R-32 SENSOR 24 VOLT HUM. & HUMIDISTAT 24 Volt Humidifier Connection Figure 12 Low Voltage A2L Alarm NOTE: This furnace is equipped with an ignition device The A2L alarm connection provides 24VAC for field alarm which automatically lights the burner. - Page 19 Gas Heat Sequence of Operation 2. The control will rotate available speed number every time left / right switches are pressed. The table below Call for 1st Stage Heat shows the available speeds for low & high heat mode. • On a call for heat, the thermostat contacts close & the 3.
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Page 20: Furnace Shutdown
• The compressor and condenser fan are energized. • The circulator fan is energized at low cool speed after THERMOSTAT CALL AVAILABLE SPEEDS a cool on delay. The electronic air cleaner will also be energized. F01 • After the thermostat is satisfied, the compressor and F02 ... -
Page 21: Gas Manifold Pressure Measurement And Adjustment
3. Outlet pressure tap connections: White-Rodgers 36J54 valve: Back outlet pressure CAUTION test screw (inlet/outlet pressure tap) out one turn (counterclockwise, not more than one turn). To prevent unreliable operation or equipment damage, the gas manifold pressure must be as specified on the unit rating plate 4. -
Page 22: Information
R-32 Information Furnace Start Up During furnace start up, the furnace control will identify the connected R-32 sensor and will start monitoring the sensor R-32 Function communication. A green LED located next to the sensor This furnace is equipped with a control board that is connection will indicate if there is communication between capable of shutting off the gas heat and turning on the the furnace control and the R-32 sensor. -
Page 23: Maintenance
Maintenance Horizontal Unit Filter Removal Filters in horizontal installations are located in the central WARNING return register or the ductwork near the furnace. To avoid electric shock, injury or death, discon- To remove: nect electrical power before performing any 1. Turn OFF electrical power to furnace. maintenance. -
Page 24: Before Leaving An Installation
Before Leaving an Installation • Cycle the heating, cooling and fan only operations to verify each operation is working properly. • Review the Owner’s Manual with the homeowner and discuss proper furnace operation and maintenance. • Leave literature packet near furnace. Repair and Replacement Parts •... -
Page 25: Airflow Tables
Airflow Tables DR80TN FAN & COOLING AIFLOW EXTERNAL STATIC PRESSURE (INCHES WATER COLUMN) THERMOSTAT MODEL TAP # CALL Watts Watts Watts Watts 1130 1090 1059 1022 F04^ DR80TN0403A* Y/Y1, Y2, G 1158 1113 1090 1057 1024 1270 1235 1208 1179 1147 1119 1088... - Page 26 Airflow Tables DR80TN HEATING AIFLOW EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) MODEL T. STAT CALL TAP # TEMP RANGE RISE RISE RISE RISE RISE F01^ W/W1 F03^^ DR80TN0403A* 15 - 45 F02^ 1130 1090 1059 1022 1158 1113 1090 1057 1024 F01^ W/W1...
- Page 27 Airflow Tables DD80TN FAN & COOLING AIRFLOW EXTERNAL STATIC PRESSURE (INCHES WATER COLUMN) THERMOSTAT MODEL TAP # CALL Watts Watts Watts Watts 1120 1081 1053 1022 F04^ DD80TN0403A Y/Y1, Y2, G 1000 1212 1198 1161 1138 1103 1076 1037 1007...
- Page 28 Airflow Tables DD80TN HEATING AIFLOW EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) TEMP MODEL T. STAT CALL TAP # RANGE RISE RISE RISE RISE RISE F01^ W/W1 F03^^ DD80TN0403A* 15 - 45 F02^ 1120 1081 1053 1022 1000 F01^ W/W1 F03^^...
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Page 29: Stage Status Codes
2 stage status codes LED Display Menu Description Notes Main Option Menu Menu ( xx: code numbers ) Active Alarm menu Er r ( xx: code numbers ) Last 10 Faults Code Release Number CR Number r Fd yes, no Reset to Factory Default ( xx: Blower Speed Number Blower Speed for Continuous Fan Mode... -
Page 30: Status Menu
2 Stage Status Codes Status Menu Main Mode Menu I dL Idle Continous Fan Compressor Cooling, Low Stage Compressor Cooling, High Stage Gas Heat, Low Stage Gas Heat, High Stage OEM test Mode... -
Page 31: Stage Troubleshooting Codes
2 Stage Troubleshooting Codes Symptom Fault Description Corrective Actions Status Normal operation I dL Normal operation None Locate and correct gas interruption Check front cover pressure switch operation and verify proper drainage (hose, wiring, contact operation), correct if necessary Furnace lockout due to an excessive Furnace fails to number of ignition “retries”... - Page 32 2 Stage Troubleshooting Codes Symptom Fault Description Corrective Actions Status Furnace fails to High stage pressure switch circuit operate on high Diagnose and replace high stage pressure is closed at start of heating cycle. stage; furnace switch if needed operates normally on low High stage pressure switch stageInduced draft...
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Page 33: Wiring Diagram
Wiring Diagram TWO STAGE GAS VALVE SURFACE (WHITE IGNITER TO 115 VAC/ 1 /60 HZ RODGERS) POWER SUPPLY WITH OVERCURRENT PROTECTION DEVICE ID BLOWER TWO-STAGE PRESSURE 2 CIRCUIT SWITCH ASSEMBLY CONNECTOR WARNING: DISCONNECT POWER BEFORE SERVICING. WIRING TO UNIT MUST BE LOW FIRE HIGH FIRE PROPERLY POLARIZED... -
Page 34: Start-Up Checklist
START-UP CHECKLIST... - Page 35 THIS PAGE IS LEFT INTENTIONALLY BLANK.
- Page 36 CUSTOMER FEEDBACK Daikin Comfort Technologies is very interested in all product comments. Please fill out the feedback form on the following link: https://daikincomfort.com/contact-us You can also scan the QR code on the right to be directed to the feedback page.
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