Table of Contents
Advertisement
Quick Links
DM97MC & DC97MC Modulating Gas Furnace
(Type FSP CATEGORY IV Direct or Non Direct Vent Air Furnace)
(Type FSP CATÉGORIE IV Direct ou four á air soufflé non direct)
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.
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.
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.
Our continuing commitment to quality products may mean a change in specifications without notice.
© 2014-2024
IOD-2007Q
08/2024
Installer:
Affix all manuals
adjacent to the unit.
19001 Kermier Rd., Waller, TX 77484
www.daikincomfort.com
INSTALLATION INSTRUCTIONS
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 capacities, 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.
WARNING
WARNING
Advertisement
Table of Contents
Troubleshooting
Subscribe to Our Youtube Channel
Related Manuals for Daikin DM97M Series
Summary of Contents for Daikin DM97M Series
- Page 1 INSTALLATION INSTRUCTIONS DM97MC & DC97MC Modulating Gas Furnace (Type FSP CATEGORY IV Direct or Non Direct Vent Air Furnace) (Type FSP CATÉGORIE IV Direct ou four á air soufflé non direct) 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.
-
Page 2: Table Of Contents
Startup Procedure & Adjustment ......35 outside the space containing the furnace. Daikin Communicating System ........42 Normal Sequence Of Operation ........47 A gas-fired furnace for installation in a residential Operational Checks .............48 garage must be installed as specified in the LOCATION Safety Circuit Description ........48... -
Page 3: What To Do If You Smell Gas
CAUTION WARNING Heating unit should not be utilized without FROZEN AND BURST WATER PIPE HAZARD reasonable, routine, inspection, maintenance Failure to protect against the risk of freezing and supervision. If the building in which any may result in property damage. such device is located will be vacant, care Special precautions MUST be made if installing should be taken that such device is routinely... - Page 4 RISQUE D'EMPOISONNEMENT AU MONOXYDE DE CARBONE Advertencia especial para la instalación de calentadores ó manejadoras de aire en áreas cerradas como estacionamientos ó cuartos de servicio. Cette ventilation est nécessaire pour éviter le danger d'intoxication Las emisiones de monóxido de carbono pueden circular a través au CO pouvant survenir si un appareil produisant du monoxyde del aparato cuando se opera en cualquier modo.
-
Page 5: Product Description
Features instructions. This furnace is a part of the Daikin Communicating family of products. A Daikin communicating thermostat allow this • All other warranty exclusions and restrictions apply furnace to be installed as part of a digitally communicating This furnace is an ETL dual-certified appliance and system. -
Page 6: Location Requirements & Considerations
ordinances. In their absence, follow the latest edition of the • Centrally locate the furnace with respect to the National Fuel Gas Code (NFPA 54/ANSI Z223.1), and/or proposed or existing air distribution system. CAN/CSA B149. 1-15 Installation Codes, local plumbing or •... -
Page 7: Clearances And Accessibility
hydrochloric acid Clearances and Accessibility cements and glues Clearance in accordance with local installation codes, the antistatic fabric softeners for clothes dryers requirements of the gas supplier and the manufacturer’s masonry acid washing materials installation instructions. • Isolate a non-direct furnace from an area Dégaugement conforme aux codes d’installation locaux, contaminated by any of the above substances. -
Page 8: Thermostat Location
WARNING CARBON MONOXIDE POISONING HAZARD SIDE SIDE SIDE Failure to follow the steps outlined below for each appliance connected to the venting system being placed into operation BOTTOM could result in carbon monoxide poisoning or death. BOTTOM The following steps shall be followed with each appliance connected to the venting system placed in operation, while any Upflow Counterflow... -
Page 9: Installation Positions
When the furnace is installed as a direct vent (2- AVERTISSEMENT pipe system) furnace, no special provisions for air for combustion are required. However, if this furnace is to be installed in the same space with other gas appliances, RISQUE D’INTOXICATION AU MONOXYDE DE such as a water heater, ensure there is an adequate supply CARBONE of combustion and ventilation air for the other appliances. -
Page 10: Horizontal Applications & Considerations
Front Cover Pressure Switch Tube Location When a furnace is installed horizontally with left side down, the front cover pressure switch tube must be re-located to the lower port of the collector box cover. 1. Remove tube from front cover pressure switch and collector box cover. -
Page 11: Vent Pipe & Combustion Air Pipe
VENT PIPE & COMBUSTION AIR PIPE VENTING MATERIAL REQUIREMENTS ASTM STANDARD This manual will refer to the pipe that discharges products SCHEDULE 40 PIPE D1785 of combustion to the outdoors as the “vent” pipe or SDR 21 or 26 PIPE D2241 “flue”... -
Page 12: Pipe Installation
PREFERRED WARNING To avoid bodily injury, fire or explosion, solvent cements must be kept away from all ignition sources (i.e., sparks, open flames, and excessive heat) as they are combustible liquids. Avoid breathing cement vapors or contact with skin and/or eyes. PIPE INSTALLATION This furnace is manufactured with 2”... - Page 13 DIRECT VENT TERMINAL CLEARANCES Canadian Installations U.S. Installations Canadian Installations U.S. Installations A= Clearance above grade, 12 in. (30 cm) 12 in. (30 cm) Clearance to service 3 ft. (91 cm). regulator vent outlet. veranda, porch, deck or balcony. (See 1.24.6-i(9)b.) J= Clearance to nonmechanical air 6 in.
- Page 14 Termination Locations drain lines, etc. If necessary, clearances may be increased NOTE: Refer to Location Requirements and by creating an offset using two 45 degree elbows. This Considerations for combustion air contaminant joint can be rotated on the fitting to establish maximum restrictions.
- Page 15 VENT-DRAIN The RF000142 Coupling Figure 12 VERTICAL VENT Figure 11 DOWN VENTING UPFLOW MODEL FURNACES ONLY Use alternate vent & combination air locations 6’ Max. Vent Pipe Floor Combustion Air Pipe Field Supplied Drain Tee on Vent Pipe 1/4” per foot min. slope to furnace Condensate trapped to prevent flue gas from escaping...
-
Page 16: Non-Direct Vent Installations
Direct Vent Installations entering the draft inducer housing. If the vent- On upflow units secure the combustion air intake pipe drain elbow is eliminated from the installation; an to the air intake coupling by using a take apart rubber RF000142 kit must be used. coupling supplied with the furnace or a plastic coupling. - Page 17 1. Remove screws and combustion air flange from Vent/Flue Pipe Terminations cabinet. NOTE: If either a 90 degree or 45 degree elbow is 2. Insert cabinet plug in unused combustion air hole. used for termination, it must be pointed downward. 3.
- Page 18 12" MIN. VENT/FLUE TEE ( OPTIONAL) 45° ELBOW TURNED DOWN or 90° ELBOW TURNED DOWN 12" MIN. ABOVE HIGHEST ANTICIPATED SNOW LEVEL Horizontal Termination (Single Pipe) Above Highest Anticipated Snow Level Figure 18 Alternate Horizontal vent termination (dual pipe) Vent/Flue & Combustion Air Pipe Lengths & Figure 20 Diameters If there is a difference between the vent and combustion...
-
Page 19: Condensate Drain Lines & Drain Trap
Follow the bullets listed below when installing the drain system. Refer to the following sections for specific details concerning furnace drain trap installation and drain hose hook ups. • The drain trap supplied with the furnace must be used. • The drain trap must be primed at time of installation. •... -
Page 20: Upflow Model Installed Vertically
Coupling 100 Degree Elbow Figure 25 Figure 24 NOTE: Drain components shown for information purposes only. For horizontal installations, a Horizontal Drain kit may be needed. Refer to the specification sheet for kit part number. Upflow Model Installed Vertically Hose #1 The trap and factory installed hoses remain as shipped. -
Page 21: Drain Exiting Left Side
4. Install smaller end of hose #3 on 45º elbow and 6. (Draining the Collector Box) Install the non-grommet secure with 1” clamp. end of hose #11 from outside the cabinet in the 5. Refer to Field Supplied Drain section for instructions bottom drain hole. -
Page 22: Counterflow Model Installed Vertically
8. Locate hose #5 and cut 3” from the non-grommet end. 6. Insert 100 degree elbow in the cut end of hose #5. Discard the section without the grommet. 7. Locate hose #6. Using red clamps, connect between 9. Insert the cut end of tube #5 through the lower cabinet the coupling and 100 degree elbow, cutting off excess drain hole. - Page 23 Drain Exiting Right Side Counterflow Model Installed Vertically The furnace drain may exit the right or left side of the furnace cabinet (left side preferred) Trap and factory installed hoses remain as shipped if the drain will exit the left side of the cabinet. Draining from the right side requires re-location of the trap to outside the cabinet.
-
Page 24: Electrical Connections
1. Remove the drain trap and factory installed drain tube 4. Place radius end of hose #4 (factory installed) on assemblies. the collector box drain port and secure with a silver 2. Remove two 1’’ plugs from right side of cabinet. clamp. -
Page 25: Wiring Harness
Junction Box Relocation CAUTION WARNING Label all wires prior to disconnection when Edges of sheet metal holes may be sharp. Use servicing controls. Wiring errors can cause gloves as a precaution when removing hole improper and dangerous operation. Verify plugs. proper operation after servicing. -
Page 26: Thermostat Connections
#13 MUST be set to match thermostat type. To use a non-communicating two-stage thermostat, DIP switch #13 must be set to ON position. To use Daikin One+ Smart Thermostat or CTK04** communicating thermostat, check to make sure DIP switch #13 is in the OFF position (factory position). -
Page 27: Volt Dehumidistat Wiring
furnace integrated control module. 3. Secure the dehumidistat hot wire (typically the black lead) to the terminal marked “R” on the furnace integrated control module. 4. Secure the dehumidistat ground wire (typically the green lead) to the ground screw on the furnace junction box. -
Page 28: Volt Humidifier
GAS SUPPLY AND PIPING grounding, and controlling these accessories. Accessory wiring connections are to be made through the 1/4” quick connect terminals provided on the furnace integrated The furnace rating plate includes the approved furnace gas control module. The Electronic air cleaner hot terminal is input rating and gas types. -
Page 29: Gas Valve
Manifold Pressure Pipe Size (in.) Pressure Nominal ½ ¾ 1¼ 1½ 2½ Low Stage Altitude Orific e Sw itc h High 0.622 0.824 1.049 1.380 1.610 2.067 2.469 Actual ID: (50% firing Change Stage Capacity in Cubic Feet of Gas per Hour Length (ft) rate) 1390... -
Page 30: Gas Piping Connections
excessive over-tightening may damage the gas valve. Manual Shut Off Valve (upstream from ground joint pipe union) • Install a manual shutoff valve between the gas meter and unit within six feet of the unit. If a union Alternate Gas Line is installed, the union must be downstream of the Location manual shutoff valve, between the shutoff valve and... - Page 31 Check for leaks using an approved chloride-free soap and Manual Shut Off Valve (upstream from water solution, an electronic combustible gas detector, or ground joint pipe union) Alternate other approved testing methods. Union Location NOTE: Never exceed specified pressures for testing.
-
Page 32: Circulating Air & Filters
Pipe size will depend on length of pipe run and total Checking Duct Static load of all appliances. Refer to your furnace rating plate for the maximum ESP (external duct static) rating. Complete information regarding tank sizing for vaporization, recommended regulator settings, and pipe Total external static refers to everything external to the sizing is available from most regulator manufacturers and furnace cabinet. -
Page 33: Digital Manometer
SUPPLY CUT USING TIN SNIPS PRESS OUT BY HAND CUTAWAY OF DUCTWORK TO EXPOSE COIL CUT FOUR CORNERS AFTER REMOVING SHEET DIGITAL METAL MANOMETER SCRIBE LINES OUTLINING DUCT FLANGES Duct Flange Cut Outs Figure 46 When the furnace is used in connection with a cooling unit, RETURN the furnace should be installed in upstream of the cooling coil. - Page 34 Model Minimum Recommended Filter Size^ DM97MC0603BN* 1 - 16 X 25 Side or Bottom DM97MC0803BN* 1 - 16 X 25 Side or Bottom DM97MC0804CN* 1 - 16 X 25 Side or Bottom DM97MC1005CN* 1 - 20 X 25 Bottom / 2 - 16 X 25 Side Return DM97MC1205DN* 1 - 20 X 25 Bottom / 2 - 16 X 25 Side Return DC97MC0603BN* 2 - 10 X 20 or 1 - 16 X 25 Top Return DC97MC0803BN* 2 - 10 X 20 or 1 - 16 X 25 Top Return...
-
Page 35: Horizontal Installations
UNIT CALL FOR HEAT ENDS 100% or in the return air duct work. IGNITION The Daikin MERV 15 air cleaner is available in the (80%) 10 MINS. following configurations. Treats home air for airborne particulate matter found in the home. The high efficiency MERV 15 media filter removes more than 85% of particles down to 0.3 microns in size at 492 fpm. -
Page 36: Condensate Drain Trap Priming
Call for 1st-Stage Heat - Thermostat contacts close R to UNIT CALL FOR HEAT ENDS 100% After a successful Light Off Sequence and expiration of the IGNITION (80%) Ignition Stabilization Period: • The furnace control board adjusts to the low firing rate. -
Page 37: Furnace Startup
or other approved method. Verify that all required kits The line pressure supplied to the gas valve must be within (propane gas, etc.) have been appropriately installed. the range specified in the Inlet Gas Supply Pressure table. The supply pressure can be measured at the gas valve Furnace Startup inlet pressure tap or at a hose fitting installed in the gas 1. - Page 38 1. Turn OFF gas to furnace at the manual gas shutoff valve external to the furnace. 2. Connect a calibrated manometer (or appropriate gas pressure gauge) at either the gas valve inlet pressure tap or the gas piping drip leg. See Honeywell VR9205R gas valve figure for location of inlet pressure tap.
- Page 39 7. Modulating furnaces light at 80% of max input. For Gas Input Rate Measurement (Natural Gas Only) natural gas, the expected manifold pressure at ignition The actual gas input rate to the furnace must never be will be in a range of 1.8” - 2.5” W.C. For LP gas, the greater than that specified on the unit rating plate.
-
Page 40: Temperature Rise
Allow adequate time for thermometer readings to This furnace is equipped with an ECM circulator blower. stabilize. The heating blower speed is shipped set at “B”, and the 4. Adjust temperature rise by adjusting the circulator cooling blower speed setting is “D”. These blower speeds blower speed. - Page 41 6. The multi-speed circulator blower also offers several High High custom ON/OFF ramping profiles for cooling. These Model Stage Stage Stage Stage profiles may be used to enhance cooling performance Cool Cool Heat Heat and increase comfort level. The ramping profiles are selected using DIP switches 7 and 8.
-
Page 42: Daikin Communicating System
(indoor/outdoor unit) is the to 90, 120, 150, 180 seconds using the DIP switches or key to unlocking the benefits and features of the Daikin jumper provided on the control module. The delay is factory Communicating system. - Page 43 Fossil Fuel Applications System Airflow Dem and System This furnace can be used in conjunction with a Daikin Operating Mode Source Communicating compatible heat pump in a fossil fuel Cooling Air Conditioner application. A fossil fuel application refers to a combined...
- Page 44 & non-communicating thermostats types (see 11-position connector image for details). NOTE: Refer to Technical Bulletin #DTB-RES-1904 in case of 9-pin phoenix plug. Communicating Thermostat (In case of Daikin One + Smart Thermostat) 11-Pin Connector Daikin Communicating G W1 W2 Y1 Y2 O...
-
Page 45: Dip Switches
DIP SWITCHES... -
Page 46: Fault Recall Sequence
“data 1” and “data 2.” screen for 1 second in between. • When all errors have been displayed, the display The Daikin Communicating system is a fully returns to ON. communicating system, and thus, constitutes a network. -
Page 47: Normal Sequence Of Operation
NORMAL SEQUENCE OF OPERATION If the last call for heat was a call for high heat, the air circulating motor will run on the high heating speed for thirty (30) seconds and then switch to the low heating Power Up speed for the balance of the heat off delay period (60, The normal power up sequence is as follows: 90, 120 or 150 seconds). -
Page 48: Operational Checks
OPERATIONAL CHECKS Rollout Limit The rollout limit controls are mounted on the burner/ manifold assembly and monitor the burner flame. They The burner flames should be inspected with the burner are normally-closed (electrically), manual-reset sensors. compartment door installed. Flames should be stable, These limits guard against burner flames not being quiet, soft, and blue (dust may cause orange tips but properly drawn into the heat exchanger. -
Page 49: High Voltage
Diagnostic Chart Annual Inspection The furnace should be inspected by a qualified installer, or WARNING service agency at least once per year. This check should be performed at the beginning of the heating season. High Voltage! This will ensure that all furnace components are in proper To avoid personal injury or death working order and that the heating system functions due to electrical shock, disconnect... -
Page 50: Induced Draft And Circulator Blowers
BEFORE LEAVING AN INSTALLATION To remove: 1. Turn OFF electrical power to furnace. 2. Remove filter(s) from the central return register or • Cycle the heating, cooling and fan only operations to ductwork. verify each operation is working properly. 3. Replace filter(s) by reversing the procedure for •... -
Page 51: Troubleshooting Codes
TROUBLESHOOTING CODES If you are attempting to install a Daikin One+ Communicating Thermostat, please visit the Daikin One+ Smart Thermostat website at http://www.daikinone.com If installing with a CTK04 thermostat, please continue reading for further instructions. - Page 52 TROUBLESHOOTING CODES...
- Page 53 TROUBLESHOOTING CODES...
- Page 54 TROUBLESHOOTING CODES...
- Page 55 TROUBLESHOOTING CODES...
-
Page 56: Status Codes
STATUS CODES NO POWER NORMAL OPERATION INDICATES AIRFLOW, FOLLOWED BY CFM BLOWER MOTOR NOT RUNNING BLOWER COMMUNICATION ERROR BLOWER HP MIS-MATCH BLOWER MOTOR OPERATING IN POWER, TEMPERATURE, OR SPEED LIMIT BLOWER MOTOR CURRENT TRIP OR LOST ROTOR BLOWER MOTOR LOCKED ROTOR BLOWER OVER/UNDER VOLTAGE TRIP OR OVER TEMPERATURE TRIP INCOMPLETE PARAMETERS SENT TO MOTOR LOW INDOOR AIRFLOW... -
Page 57: Wiring Diagram
WIRING DIAGRAM DM97MC_A*, DC97MC_A* DOOR SWITCH JUNCTION BOX INDUCTOR COIL (ON SOME MODELS) INDOOR CIRCULATOR BLWR LINE NEUTRAL ELECTRONIC AIR CLEANER OPTIONAL 3Ø ID BLWR NEUTRAL HUMIDIFIER OPTIONAL NEUTRAL HOT SURFACE IGNITER NEUTRAL LINE DIAGNOSTIC LED'S 40 VA FUSE 3A TR (5) TRANSFORMER 24 VAC... -
Page 58: Special Instructions For Products Installed In The State Of Massachusetts
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 VENT/FLUE owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above finished grade in the area of the venting, including but not limited to decks and porches, the... -
Page 59: Start-Up Checklist
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. -
Page 60: Customer Feedback
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.
Need help?
Do you have a question about the DM97M Series and is the answer not in the manual?
Questions and answers