Daikin DM96TN Installation Instructions Manual
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Daikin DM96TN Installation Instructions Manual

Two-stage gas furnaces
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These furnaces comply with requirements
embodied in the American National
Standard / National Standard of Canada
ANSI Z21.47·CSA-2.3 Gas Fired Central
Furnaces.
INSTALLER: Affix all manuals adjacent to the unit.
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 safety
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 safety
practices...follow them.
The precautions listed in this Installation Manual are intended
as supplemental to existing practices. However, if there is
a direct conflict between existing practices and the content
of this manual, the precautions listed here take precedence.
Our continuing commitment to quality products may mean a change in specifications without notice.
©2021-2022
IOD-2027B
02/2022
DM96TN & DC96TN
Two-Stage Gas Furnaces
(Type FSP CATEGORY IV Direct
or Non Direct Vent Air Furnace)
(Type FSP CATÉGORIE IV Direct
ou four á air souffl‫ י‬non direct)
19001 Kermier Rd., Waller, TX 77484
www.daikincomfort.com
INSTALLATION INSTRUCTIONS
RECOGNIZE THIS SYMBOL
AS A SAFETY PRECAUTION.
NOTE: Please contact your distributor or our website for
*
the applicable Specification Sheet referred to in this manual.
O
NLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL
(
, "
")
HEREINAFTER
SERVICE
THE EQUIPMENT SPECIFIED IN THIS MANUAL SHOULD
. T
SERVICE THE EQUIPMENT
HE MANUFACTURER WILL NOT BE RESPONSIBLE FOR ANY
INJURY OR PROPERTY DAMAGE ARISING FROM IMPROPER SERVICE OR SERVICE
. I
PROCEDURES
F YOU SERVICE THIS UNIT
INJURY OR PROPERTY DAMAGE WHICH MAY RESULT
THAT REQUIRE ONE OR MORE LICENSES TO SERVICE THE EQUIPMENT SPECIFIED IN THIS
,
MANUAL
ONLY LICENSED PERSONNEL SHOULD SERVICE THE EQUIPMENT
,
,
INSTALLATION
ADJUSTMENT
SERVICING OR REPAIR OF THE EQUIPMENT SPECIFIED IN
,
THIS MANUAL
OR ATTEMPTING TO INSTALL
EQUIPMENT SPECIFIED IN THIS MANUAL WITHOUT PROPER TRAINING MAY RESULT IN
,
PRODUCT DAMAGE
PROPERTY DAMAGE
DO NOT BYPASS SAFETY DEVICES.
90% HEX
,
,
ADJUST
SERVICE OR REPAIR
,
YOU ASSUME RESPONSIBILITY FOR ANY
. I
,
N ADDITION
IN JURISDICTIONS
. I
,
,
ADJUST
SERVICE OR REPAIR THE
,
.
PERSONAL INJURY OR DEATH
WARNING
DO NOT LIFT
PRODUCT USING
HEAT EXCHANGER
MPROPER

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Summary of Contents for Daikin DM96TN

  • Page 1 INSTALLATION INSTRUCTIONS DM96TN & DC96TN Two-Stage Gas Furnaces (Type FSP CATEGORY IV Direct or Non Direct Vent Air Furnace) (Type FSP CATÉGORIE IV Direct ou four á air souffl‫ י‬non direct) RECOGNIZE THIS SYMBOL These furnaces comply with requirements AS A SAFETY PRECAUTION.

  • Page 2: Table Of Contents

    Table of Contents Safety Considerations ..........3 Product Description ............ 5 Product Application ............. 5 Location Requirements & Considerations ....6 Combustion & Ventilation Requirements ....10 Installation Positions ..........10 Horizontal Applications & Considerations ....11 Propane Gas/High Altitude Installations....11 Condensate Drain Lines &...

  • Page 3: Safety Considerations

    Always install a furnace to operate within the furnace’s WARNING intended temperature-rise range with a duct system which has external static pressure within the allowable range, as FIRE OR EXPLOSION HAZARD specified on the furnace rating plate and OPERATIONAL CHECKS section of these instructions. Failure to follow the safety warnings exactly could result in serious injury, death or property damage.
  • Page 4 WARNING WARNING SHOULD OVERHEATING OCCUR OR THE GAS SUPPLY FAIL TO SHUT OFF, HEATING UNIT SHOULD NOT BE UTILIZED WITHOUT REASONABLE, TURN OFF THE MANUAL GAS SHUTOFF VALVE EXTERNAL TO THE FURNACE ROUTINE, INSPECTION, MAINTENANCE AND SUPERVISION. IF THE BEFORE TURNING OFF THE ELECTRICAL SUPPLY. BUILDING IN WHICH ANY SUCH DEVICE IS LOCATED WILL BE VA- CANT, CARE SHOULD BE TAKEN THAT SUCH DEVICE IS ROUTINELY WARNING...

  • Page 5: Product Description

    Features • All other warranty exclusions and restrictions apply The DM96TN furnace may be installed upflow or horizontally This furnace is an ETL dual-certified appliance and with left or right side down. The DC96TN furnace may be is appropriate for use with natural or propane gas installed downflow or horizontally with left or right side down.

  • Page 6: Location Requirements & Considerations

    The rated heating capacity of the furnace should be greater than or equal to the total heat loss of the area to be heated. • Return air ducts are provided and sealed to the The total heat loss should be calculated by an approved furnace.
  • Page 7 • If the furnace is installed in a residential garage, • Ensure adequate combustion air is available for position the furnace so that the burners and ignition the furnace. Improper or insufficient combustion air source are located not less than 18 inches (457 mm) can expose building occupants to gas combustion above the floor.
  • Page 8 24 inches service clearance must be available in front of the unit. 3. As far as practical, close all building doors and DM96TN MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS windows and all doors between the space in which (INCHES)
  • Page 9 Existing Furnace Removal AVERTISSEMENT NOTE: When an existing furnace is removed from a venting RISQUE D'INTOXICATION AU MONOXYDE DE CARBONE system serving other appliances, the venting system may be Si les étapes décrites ci-dessous ne sont pas suivies pour too large to properly vent the remaining attached appliances. chacun des appareils raccordés au système de ventilation The following vent testing procedure is repro duced from au moment de sa mise en marche, cela peut entraîner une...

  • Page 10: Combustion & Ventilation Requirements

    Thermostat Location Installation Positions The thermostat should be placed approximately five feet from the floor on a vibration-free, inside wall in an area having good air circulation. Do not install the thermostat where it may be influenced by any of the following: •...

  • Page 11: Horizontal Applications & Considerations

    3. Locate 24’’ x 1/4’’ tube in bag assembly. 4. Install one end on front cover pressure switch. DM96TN models may be installed upflow or horizontally with 5. Route tube to lower port on collector box cover and cut left or right side down. DC96TN models may be installed down off excess tubing.
  • Page 12 This furnace is shipped from the factory configured for natural gas at standard altitude. Propane gas installations require This manual will refer to the pipe that discharges products of an orifice and spring change to compensate for the energy combustion to the outdoors as the “vent” pipe or “flue” pipe. content difference between natural and propane gas.
  • Page 13 VENTING MATERIAL REQUIREMENTS WARNING ASTM STANDARD To avoid bodily injury, fire or explosion, solvent SCHEDULE 40 PIPE D1785 cements must be kept away from all ignition SCHEDULE 40 CELLULAR CORE PIPE F891 sources (i.e., sparks, open flames, and excessive SDR 21 OR 26 PIPE D2241 heat) as they are combustible liquids. Avoid FITTINGS D2466 breathing cement vapors or contact with skin and/or eyes.
  • Page 14 Termination Locations Non-Direct Vent & Direct Vent Vent/Flue Terminations Non-Direct Vent Vent/Flue Termination No Terminations Above Walkway Grade or Highest Anticipated Snow Level Non-Direct Vent Figure 9 Vent/Flue Termination Forced Air Inlet Direct Vent Insert flange. Cut 2 ½” long. RF000142 Vent/Flue Termination SEE FIGURE 8...
  • Page 15 DM96TN / DC96TN Direct Vent (2 - Pipe) and Non-Direct Vent (1- Pipe) Maximum Allowable Length of Vent/Flue Pipe Pipe Size Number of Elbows MODEL (in.) DM 96TN0303AN & DM 96TN0403AN DM 96TN0603AN DM 96TN0603BN DM 96TN0803BN DM 96TN0804CN DM 96TN1004CN...
  • Page 16 Combustion Air Intake Options (See Figure 12) Vent/Flue Pipe Terminations The RF000142 coupling (Figure 8) can be secured directly 12" MIN. to the furnace intake coupling if condensation is a concern. If the RF000142 is used on the combustion air inlet, it must be installed with the arrow pointing up.
  • Page 17 TEE (OPTIONAL) VENT/FLUE COMBUSTION AIR INTAKE 12” MIN (OPTIONAL) HEIGHT DIFFERENCE BETWEEN *Not required for single pipe installation INTAKE AND VENT DISTANCE BETWEEN COMBUSTION VENT AND GRADE AIR INTAKE. DISTANCE BETWEEN COMBUSTION AIR INTAKE AND GRADE 12” MIN TO ROOF OR HIGHEST ANTICIPATED SNOW LEVEL Figure 16 Figure 19...

  • Page 18: Condensate Drain Lines & Drain Trap

    Vent/Intake Terminations For Installation of Multiple Direct Vent Furnaces If more than one direct vent furnace is to be installed vertically H oriz ontal Ins tallation through a common roof top, maintain the same minimum clearances between the exhaust vent and air intake termi- nations of adjacent units as with the exhaust vent and air intake terminations of a single unit.
  • Page 19 Field Supplied Drain WARNING Drain the furnace and air conditioning coil if applicable, in compliance with code requirements. In horizontal installa- EDGES OF SHEET METAL HOLES MAY BE SHARP. USE GLOVES AS A PRECAUTION WHEN REMOVING HOLE PLUGS. tions, a field installed rubber coupling will allow the drain trap to be removed for cleaning.
  • Page 20 4. Install smaller end of hose #3 on 45º elbow and secure 5. (Draining the Vent Elbow) Locate hose #2 (factory with 1” clamp. installed) and cut 1” away from the 45 degree bend, discard the 45 degree section. Insert hose #2 from 5.
  • Page 21 6. Remove the rubber plug from vent – drain elbow side 2. Install 90°radius end of hose #2 on RF000142 drain outlet and secure with a red clamp. port. Place hose #6 on the vent – drain elbow side port 3.
  • Page 22 Counterflow Model Installed Horizontal- ly with Right Side Down (See Figure 32) Minimum 5 1/2” clearance is required for the drain trap be- neath the furnace. NOTE: For horizontal installations, some of the required hoses are found in the factory-installed hose assemblies. Remove the hose clamps to obtain the respective hoses needed for installation, and install per the following directions.

  • Page 23: Electrical Connections

    Remove the hose clamps to obtain the respective hoses Hose #4 needed for installation, and install per the following directions. 1. Remove the factory installed drain trap and hose assemblies. Leave the 100° elbow inserted and clamped in the vent-drain elbow. 2.
  • Page 24 115 Volt Line Connections Line voltage connections can be made through either the right or left side panel. The furnace is shipped configured for a left Before proceeding with electrical connections, ensure that side electrical connection. To make electrical connections the supply voltage, frequency, and phase correspond to that through the opposite side of the furnace, the junction box specified on the unit rating plate.
  • Page 25 Timing to 2nd ROOM THERMOSTAT W/W1 Duty Cycle % Demand Stage Gas Heat INTEGRATED FURNACE 0-38 12 minutes Light W/W1 Y/Y1 CONTROL MODULE Light to 39-50 10 minutes REMOTE COOLING UNIT Average (SINGLE STAGE) 51-62 7 minutes Average Thermostat - Two-Stage Heating with Single-Stage Cooling Average 63-75 5 minutes...
  • Page 26 WARNING FURNACE 2 TWIN W/W1 Y/Y1 HIGH VOLTAGE TO AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK, DISCONNECT ELECTRICAL FURNACE 1 TWIN W/W1 Y/Y1 POWER BEFORE SERVICING OR CHANGING ANY ELECTRICAL WIRING. ROOM THERMOSTAT W/W1 Y/Y1 115 VAC EAC 115 VAC HUM COND UNIT CONTACTOR...

  • Page 27: Gas Supply And Piping

    Gas Supply and Piping WARNING WARNING POSSIBLE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH MAY OCCUR TO AVOID POSSIBLE UNSATISFACTORY OPERATION OF EQUIPMENT DAMAGE IF THE CORRECT CONVERSION KITS ARE NOT INSTALLED. THE APPROPRIATE DUE TO UNDERFIRING OR EQUIPMENT, USE THE PROPER SIZE OF NATURAL/ KITS MUST BE APPLIED TO ENSURE SAFE AND PROPER FURNACE OPERA- PROPANE GAS PIPING NEEDED WHEN RUNNING PIPE FROM THE METER/ TION.
  • Page 28 – Rigid metallic pipe and fittings. Natural Gas Capacity of Pipe In Cubic Feet of Gas Per Hour (CFH) – Semi-rigid metallic tubing and metallic fittings. Length of Nominal Black Pipe Size Pipe in Feet 1/2" 3/4" 1" 1 1/4" 1 1/2"...

  • Page 29: Circulating Air & Filters

    Gas Piping Checks 3. Pressure drop in lines between regulators, and between second stage regulator and the appliance. Before placing unit in operation, leak test the unit and gas Pipe size will depend on length of pipe run and total connections.
  • Page 30 SUPPLY WARNING CUTAWAY OF DUCTWORK NEVER ALLOW THE PRODUCTS OF COMBUSTION, INCLUDING TO EXPOSE COIL CARBON MONOXIDE, TO ENTER THE RETURN DUCT WORK OR CIRCULATION AIR SUPPLY. Total external static refers to everything external to the fur- DIGITAL MANOMETER nace cabinet. Cooling coils, filters, ducts, grilles, registers must all be considered when reading your total external static pressure.

  • Page 31: Startup Procedure & Adjustment

    When the furnace is heating, the temperature of the return kit (upflows). As an alternative a media air filter or electronic air air entering the furnace must be between 55°F and 100°F. cleaner can be used as the requested filter. Consider installing an air cleaner with deep-pleated media filter at the time of CUT USING TIN SNIPS furnace installation.
  • Page 32 Gas Supply Pressure Measurement to prevent air leakage. Drain Trap Priming Gas Pressure Test The drain trap MUST be primed prior to furnace startup. To The line pressure supplied to the gas valve must be within prime, fill both sides of the drain trap with water. This ensures the range specified below.
  • Page 33 Gas Input Rate Measurement (Natural Gas 3. Outlet pressure tap connections: White-Rodgers 36J54 valve: Back outlet pressure Only) test screw (inlet/outlet pressure tap) out one turn (counterclockwise, not more than one turn). 4. Attach a hose and manometer to the outlet pressure tap (White-Rodgers valve).
  • Page 34 3. Subtract the return air temperature from the supply air temperature to determine the air temperature rise. Allow adequate time for thermometer readings to stabilize. 4. Adjust temperature rise by adjusting the circulator blower speed. Increase blower speed to reduce temperature rise.

  • Page 35: Airflow Tables

    Airflow Tables LOW STAGE COOLING AIFLOW HIGH STAGE COOLING AIFLOW EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) THERMOSTAT THERMOSTAT MODEL TAP # MODEL TAP # CALL CALL F04^ DC96TN0403BN Y/Y1 1106 1076 1044 1010 DC96TN0403BN F05^ 1106 1076...
  • Page 36 Airflow Tables HEATING AIFLOW EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) THERMOSTAT TEMP RANGE TEMP RANGE MODEL TAP # CALL HIGH RISE RISE RISE RISE RISE F01^ W/W1 F03^^ DC96TN0403BN 20-50 25-55 F02^ 1106 1076 1044 1010 F01^ 1167 1118 1069 1022 W/W1 F03^^...
  • Page 37 Airflow Tables LOW STAGE COOLING AIFLOW HIGH STAGE COOLING AIFLOW EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) THERMOSTA THERMOSTA MODEL TAP # MODEL TAP # T CALL T CALL F04^ DM96TN0303AN Y/Y1 1055 1022 DM96TN0303AN F05^ 1055 1022...
  • Page 38 Airflow Tables CIRCULATION AIRFLOW EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) THERMOSTA MODEL TAP # T CALL DM96TN0303AN 1055 1022 1101 1072 1040 1010 1190 1162 1134 1104 1077 1042 1013 1183 1157 1130 1103 1077 1047 1018 1229 1206 1178 1153 1128 1100...
  • Page 39 Airflow Tables HEATING AIFLOW EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) THERMOSTA TEMP RANGE TEMP RANGE MODEL TAP # T CALL HIGH RISE RISE RISE RISE RISE F01^ W/W1 F03^^ DM96TN0303AN 20-50 20-50 F02^ 1055 1022 F01^ W/W1 F03^^ DM96TN0403AN 20-50 20-50 F02^ 1051...

  • Page 40: Normal Sequence Of Operation

    Normal Sequence of Operation Note: Always refer to the Heating Chart to choose from available heating speeds. Power Up THERMOSTAT CALL AVAILABLE SPEEDS Upon being powered up, the control board will perform in- F01 (DEFAULT) ternal and polarity checks. The control will display I d L, idle W/W1 mode until a call from the thermostat is received.

  • Page 41: Operational Checks

    (15 seconds). THERMOSTAT CALL AVAILABLE SPEEDS • The indoor blower runs for the selected off delay period (90 seconds by default, adjustable from 30 – 180 sec- onds). Call for 2nd Stage Heat During 1st Stage Heat Operation • The control board receives a 24 vac signal on the W2 F05 (DEFAULT) terminal.

  • Page 42: Safety Circuit Description

    Safety Circuit Description Flame Sensor The flame sensor is a probe mounted to the burner/manifold assembly which uses the principle of flame rectification to WARNING determine the presence or absence of flame. DO NOT BYPASS SAFETY DEVICES. Troubleshooting Electrostatic Discharge (ESD) Precautions A number of safety circuits are employed to ensure safe and proper furnace operation.

  • Page 43: Maintenance

    Fault Recall WARNING Retrieving Fault Codes Resetting From Lockout HIGH VOLTAGE TO AVOID ELECTRICAL SHOCK, INJURY OR DEATH, Furnace lockout results when a furnace is unable to achieve DISCONNECT ELECTRICAL POWER BEFORE PERFORMING ANY ignition after three attempts during a single call for heat. It is MAINTENANCE.

  • Page 44: Before Leaving An Installation

    Flame Sensor (Qualified Servicer Only) Media Air Filter or Electronic Air Cleaner Removal Under some conditions, the fuel or air supply can create a nearly invisible coating on the flame sensor. This coating Follow the manufacturer’s directions for service. acts as an insulator causing a drop in the flame sense signal. If the flame sense signal drops too low the furnace will not WARNING sense flame and will lock out.

  • Page 45: Status Codes

    Status Codes LED Display Menu Description Notes Main Option Menu Menu ( xx: code numbers ) Active Alarm menu ( xx: code numbers ) Last 6 Faults Code Release Number CR Number yes, no Reset to Factory Default ( xx: Blower Speed Number F01, F02.. ) Blower Speed for Continous Fan Mode ( xx: Blower Speed Number F01, F02..

  • Page 46: Troubleshooting Chart

    Troubleshooting Chart Symptom Fault Description Corrective Actions Symptom Fault Description Corrective Actions Status Status Normal operation Normal operation None  Normal operation Normal operation None  Locate and correct gas interruption High stage pressure switch Furnace fails to circuit is closed at start of Check front cover pressure switch operate on high Diagnose and replace high stage...

  • Page 47: Wiring Diagram

    Wiring Diagram POWER BEFORE PROPERLY POLARIZED AUTO RESET AUXILIARY LIMIT CONTROL 40 VA TRANSFORMER TH (3) HLO (1) PS1(5) READ CODES FROM LEFT TO RIGHT HLI (8) MVL (10) INTEGRATED CONTROL MODULE MVC (11) MVH (4) TR (7) W/W1R Y/Y1 ECM MTR INDOOR HARNESS...
  • Page 48 Special Instructions for Products Installed in the State of Massachusetts For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or operated by the VENT/FLUE Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above finished grade in the area of the...
  • Page 49 START-UP CHECKLIST Furnace Model Number Serial Number ELECTRICAL Line Voltage (Measure L1 to N and N to Ground Voltage) L - N N - G Secondary Voltage (Measure Transformer Output Voltage) R - C Blower Amps BLOWER EXTERNAL STATIC PRESSURE Return Air Static Pressure IN.
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  • Page 52 CUSTOMER FEEDBACK Daikin 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. PRODUCT REGISTRATION Thank you for your recent purchase.

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