Daikin DM97MC Operating instructions

1
Modulating Gas Furnaces, up to 98% AFUE
34.5" Chassis DM97MC, DC97MC
& Accessories
RSD6612009r5
September2016
This manual is to be used by qualified, professionally trained HVAC technicians only. Daikin does not
assume any responsibility for property damage or personal injury due to improper service
procedures or services performed by an unqualified person.
Copyright © 2014-2016
Service Instructions

2
IMPORTANT INFORMATION
Pride and workmanship go into every product to provide our customers with quality products. It is possible,
however, that during its lifetime a product may require service. Products should be serviced only by a qualified
service technician who is familiar with the safety procedures required in the repair and who is equipped with the
proper tools,parts,testinginstrumentsandtheappropriateservicemanual. REVIEWALLSERVICE INFORMATION
IN THE APPROPRIATE SERVICE MANUAL BEFORE BEGINNING REPAIRS.
IMPORTANT NOTICES FOR CONSUMERS AND SERVICERS
RECOGNIZESAFETYSYMBOLS,WORDSANDLABELS
WARNING
TO PREVENT THE RISK OF PROPERTY DAMAGE, PERSONAL INJURY, OR DEATH,
DO NOT STORE COMBUSTIBLE MATERIALS OR USE GASOLINE OR OTHER
FLAMMABLE LIQUIDS OR VAPORS IN THE VICINITY OF THIS APPLIANCE.
TABLEOFCONTENTS
WARNING
HIGH VOLTAGE
DISCONNECT ALL POWER BEFORE SERVICING OR
INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY
BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY
DAMAGE, PERSONAL INJURY OR DEATH.
IMPORTANT INFORMATION ......................2-4
PRODUCT IDENTIFICATION .................... 5 - 8
ACCESSORIES ................................... 9 - 11
LIGHTING INSTRUCTIONS .........................12
PRODUCT DESIGN ............................ 13 - 24
OPERATION .................................... 25 - 47
SERVICE AND OPERATION......................... 48
OPERATIONAL CHECKS ...................... 49 - 50
MAINTENANCE ...................................... 51
SERVICING TABLE OF CONTENTS ................ 52
SERVICING ..................................... 53 - 61
TROUBLESHOOTING.......................... 62 - 66
STATUS CODES ...................................... 67
WIRING DIAGRAM................................... 68
O NLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL , ADJUST , SERVICE OR
REPAIR ( HEREINAFTER , “ SERVICE ”) THE EQUIPMENT SPECIFIED IN THIS
MANUAL SHOULD SERVICE THE EQUIPMENT . T HE MANUFACTURER WILL NOT
BE RESPONSIBLE FOR ANY INJURY OR PROPERTY DAMAGE ARISING FROM
IMPROPER SERVICE OR SERVICE PROCEDURES . I F YOU SERVICE THIS UNIT , YOU
ASSUME RESPONSIBILITY FOR ANY INJURY OR PROPERTY DAMAGE WHICH MAY
RESULT . I N ADDITION , IN JURISDICTIONS THAT REQUIRE ONE OR MORE
LICENSES TO SERVICE THE EQUIPMENT SPECIFIED IN THIS MANUAL , ONLY
LICENSED PERSONNEL SHOULD SERVICE THE EQUIPMENT . I MPROPER
INSTALLATION , ADJUSTMENT , SERVICING 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
TRAINING MAY RESULT IN PRODUCT DAMAGE , PROPERTY DAMAGE , PERSONAL
INJURY OR DEATH .

3
IMPORTANT INFORMATION
Tolocate an authorized servicer,please consultyour telephone bookor thedealer from whomyou purchasedthis
product. For further assistance, please contact:
CONSUMER INFORMATION LINE
DAIKIN BRAND PRODUCTS
TOLLFREE
1-855-770-5678 (U.S. only)
email us at:
[email protected]
fax us at:
[phone]
(Not a technical assistance line for dealers.)
Outside the U.S., call 1-713-861-2500.
(Not a technical assistance line for dealers.) Your telephone company will bill you for the call.

4
IMPORTANT INFORMATION
B10259-216
CO can cause serious illness including permanent brain
damage or death.
Advertencia especial para la instalación de calentadores ó manejadoras
de aire en áreas cerradas como estacionamientos ó cuartos de servicio.
B10259-216
El monóxido de carbono puede causar enfermedades severas
como daño cerebral permanente ó muerte.
Las emisiones de monóxido de carbono pueden circular a través
del aparato cuando se opera en cualquier modo.
B10259-216
RISQUE D'EMPOISONNEMENT AU MONOXYDE DE CARBONE
Cette ventilation est nécessaire pour éviter le danger d'intoxication
au CO pouvant survenir si un appareil produisant du monoxyde
de carbone continue de fonctionner au sein de la zone confinée.

PRODUCT IDENTIFICATION
5
D M 97 M C 060 3 B N A A
SUPPLY TYPE
M: Upflow/Horizontal
C: Downflow/Horizontal
FURNACE TYPE
M: Modulating
V: 2-Stage
AFUE
97: 97% NOMINAL INPUT
060: 60,000 Btuh
080: 80,000 Btuh
100: 100,000 Btuh
120: 120,000 Btuh
AIRFLOW
CAPABILITY
@ 0.5" ESP
3: 1200
4: 1600
5: 2000
CABINET
WIDTH
B: 17-1/2"
C: 21"
D: 24-1/2"
ADDITIONAL
FEATURES
N: Natural Gas
X: Low NOx
PRODUCT
TYPE:
D: Daikin MAJOR
REVISION
A: Initial Release
MINOR
REVISION
A: Initial Release
COMMUNICATION FEATURE
C: Variable Speed/ComfortNetTM

PRODUCT IDENTIFICATION
6
MODEL: DM97MC REV AA
Equipment Type Daikin Brand Residential Gas Furnace
Heating Stages Modulating (35% - 100% of rated input)
Cooling Stages Two
Control Type ClimateTalk ™ or Conventional 24 Volt
Blower Motor Type 4 Wire Variable Speed ECM
DM97MC 0603BN 0803BN 0804CN 1005CN 1205DN
Installation Positions UF, Hor L/R UF, Hor L/R UF, Hor L/R UF, Hor L/R UF, Hor L/R
Installation Positions UF, Hor L/R UF, Hor L/R UF, Hor L/R UF, Hor L/R UF, Hor L/R
BTUH Input Range (X 1000) 21 - 60 28 - 80 28 -80 35 - 100 42 - 120
A/C Capable Tons 1.5 - 3 1.5 - 3 2 - 4 2 - 5 2 - 5
Cabinet Hight " 34.5 34.5 34.5 34.5 34.5
Cabinet Width " 17.5 17.5 21 21 24.5
Heating CFM @ 100% Firing Rate 1059 1316 1337 1870 1940
Draft Inducer3Ø Variable Speed
Gas Valve 24 VAC, Modulates by Pneumatic signal
24 VAC Heating Inputs W1 / W2
24 VAC Cooling Inputs Y1 / Y2
Primary Heat Exchanger Stainless Steel
Accessory Terminals EAC terminal, HUM IN / HUM OUT terminals
Gas Line Entry Left or Right
Revision Attributes First revision of 34.5" modulating up flow furnace
MODEL: DC97MC REV AA
Equipment Type Daikin Brand Residential Gas Furnace
Heating Stages Modulating (35% - 100% of rated input)
Cooling Stages Two
Control Type ClimateTalk ™ or Conventional 24 Volt
Blower Motor Type 4 Wire Variable Speed ECM
DC97MC 0603BN 0803BN 0804CN 1005CN
Installation Positions CF, Hor L/R CF, Hor L/R CF, Hor L/R CF, Hor L/R
BTUH Input Range (X 1000) 21 - 60 28 - 80 28 -80 35 - 100
A/C Capable Tons 1.5 - 3 1.5 - 3 2 - 4 2 - 5
Cabinet Hight " 34.5 34.5 34.5 34.5
Cabinet Width " 17.5 17.5 21 21
Heating CFM @ 100% Firing Rate 950 1146 1325 1779
Draft Inducer
Gas Valve
24 VAC Heating Inputs
24 VAC Cooling Inputs
Primary Heat Exchanger
Accessory Terminals
Gas Line Entry
Revision Attributes First revision of 34.5" modulating counter flow furnace
Left or Right
3ØVariable Speed
24 VAC, Modulates by Pneumatic signal
W1 / W2
Y1 / Y2
Stainless Steel
EAC terminal, HUM IN / HUM OUT terminals

PRODUCT IDENTIFICATION
7
MODEL # MFG # DESCRIPTION
AFE18-60A N/A
Fossil Fuel Kit. The AFE18-60Acontrol is designed for use where the indoor coil is located above/downstream
ofa gas or fossil fuel furnace when used with a heatpump.Itwill operate with single and two stage heat
pumps and single and two stage furnaces. The AFE18-60Acontrol will turn the heat pump unitoffwhen the
furnace is turned on.An anti-shortcycle feature initiates a 3 minute timed off delaywhen the compressor goes
off.
AMU1620
AMU1625
AMU2020
AMU2025
GMU1620
GMU1625
GMU2020
GMU2025
P1251305F
P1251306F
P1251307F
P1251308F
N/A
Media Air Cleaner.For use with modulating furnace models.The air cleaner is a high efficiencyair filtration
device designed to remove dirt, dust,pollen and other microscopic particles from the air passing through it.
Flexible performance range up to 2,000 CFMcapacity. The air cleaner should be installed in the system so that
all the system airis circulated through the air cleaner. The air cleaner will onlyremove the airborne
contaminants delivered to it.Maximum performance is obtained when the system blower is setfor continuous
operation. Carbon filters (optional) are available.
ASAS-10
ASAS-11
ASAS-12
ASAS-18
P1251301F
P1251302F
P1251303F
P1251304F
Electronic Air Cleaner.Foruse with variable speed,modulating furnace models. The High-Efficiency
Electronic Air Cleaner is designed to remove air contaminants down to .01 microns.Carbon filters (optional)
remove odors. Dual indicator lights show unit operation ata glance. Electronic proving switch cycles the air
cleaner On/Offwith the system fan. Durable powder-coatpaintfinish resists corrosion.
CFSB17
CFSB21
CFSB24 N/A
Counterflow Subbase Kit. For use with modulating 34.5" furnace models.These kits are available for the
following furnace widths:17.5"wide (CFSB17),21"wide (CFSB21) and 24" wide (CFSB24).The kits must be
used to preventexcessive temperature from reaching combustible materials, ifthe furnace is installed on a
combustible floor.This subbase effectivelyseparated the furnace base and plenum from combustible
materials. To ensure safe installation, do not install the counterflow floor base directlyon carpeting, tile, or
other combustible material other than wood flooring.
CTK01 CTK01AA
Communicating Thermostat Kit-Digitallycommunicating touchscreen thermostat, a necessarypartof any
communicating system.Designed for use with compatible Daikin Air Handlers or Furnaces and outdoor split
AC orHeatPump units.This thermostatsupports up to three stages ofheat,two stages ofcooling, dual fuel
applications,dehumidification,filter maintenance reminders, outdoor temperature displayand advanced
menus including diagnostics.The CTK01AAkitincludes a communicating touchscreen thermostat and sub
base, 230V-24V40va transformer, terminal blocks(2), wire jumpers,
mounting screws, installation manual and homeowner guide.
CTK01BA CTK01BA
Communicating Thermostat Kit-Digitallycommunicating touchscreen thermostat, a necessarypartof any
communicating system.Designed for use with compatible Daikin Air Handlers or Furnaces and outdoor split
AC orHeatPump units.This thermostatsupports up to three stages ofheat,two stages ofcooling, dual fuel
applications,dehumidification,filter maintenance reminders, outdoor temperature displayand advanced
menus including diagnostics.The CTK01BAkitincludes a communicating touchscreen thermostatand sub
base,terminal blocks(2),mounting screws, installation manual and homeowner guide.
CTK02** CTK02**
Communicating Thermostat Kit-Digitallycommunicating thermostat, a necessarypartof anycommunicating
system. Designed for use with compatible Daikin Air Handlers or Furnaces and outdoor split AC or Heat Pump
units. The CTK02** thermostatfeatures full color,high definition display, advanced programming options
including humidification control & heatand cool maximum temperature settings, a USBplug allowing dealers
the abilityto insertpre-programmed operating parameters and dealerinformation byuse of an online data
entrysystem.
CTK03A* CTK03A*
Communicating Thermostat Kit-Digitallycommunicating touchscreen thermostatfrom Honeywell.Designed
for use with compatible Daikin Air Handlers or Furnaces and outdoorsplit AC or HeatPump units.The
CTK03A* thermostat features full color high definition display,can be used with RedLINK wireless
accessories.
CTK04A* CTK04A*
Communicating Thermostat Kit-Digitallycommunicating touchscreen thermostatfrom Honeywell.Designed
for use with compatible Daikin Air Handlers or Furnaces and outdoorsplit AC or HeatPump units.The
CTK04A* thermostat features full color high definition display,can be used with RedLINK wireless
accessories. Splitsystem inverter capable.

PRODUCT IDENTIFICATION
8
MODEL # MFG # DESCRIPTION
DCVK-20
(CVENT-2)
DCVK-30
(CVENT-3)
N/A
Concentric Vent Kit. For use with Daikin Modulating furnace models. This kitis designed to allow terminations
ofa directvent furnace to be "concentrically"vented through a wall or roof.This kitallows a single penetration to
supportterminations for both the vent/flue and the combustion air intake pipe.The DCVK-20 (2") and DCVK-30
(3") kits are certified formodels listed above. See specification sheets on future models for use of the ventkit.
DEHUM1 P1227801F
Dehumidistat. For use with Daikin two-stage variable speed modulating furnace models.Wall mounted,24 volt
humiditycontrol available as a Dehumidistatused to reduce the airflow in the air conditioning mode when
necessaryto lower the humidityin an occupied home to preventdew build-up associated with high humidity
levels.This control features a moisture-sensitive nylon elementand also provides positive ON-OFFsettings for
manual operation.The control is a normallyclosed switch thatopens on humidityrise causing the blowerto
switch to a lowerspeed to control the humiditywithin the structure.
EFR02 N/A
ExternalFilter Rack Kit.For use with Daikin 97% upflow,variable speed *MVM34.5" modulating gas furnaces.
This kitis intended to provide a location,external to the furnace casing forinstallation ofa permanentfilter.The
rack is mounted over the indoor air blower compartment area of either side panel,and provide filter retention
as well as a location for attaching return air ductwork.
0170K00000S N/A Side Wall Only Concentric Vent Kit. For use with 97% modulating furnace models. This kit is to be used with
2"- 3"ventsystems.The ventkitmustterminate outside the structure. This kit is NOTintended for use with
single pipe (indirectvent) installations.
0170K00001S N/A Side Wall Only Concentric Vent Kit. For use with 97% modulating furnace models. This kit is to be used with
2"vent systems.The ventkitmustterminate outside the structure. This kitis NOTintended for use with single
pipe (indirect vent) installation
LPLP03 N/A LP Gas Low Pressure Kit.The kitmonitors gas line pressure with a pressure switch and will open the circuit
to the gas valve ifthe LP tank pressure gets low.
LPM-09 N/A LP Conversion Kit Converts a 34.5"modulating furnace to operate on L.P.gas. The kitcontains an L.P.gas
valve and a setofsixL.P.orifices.
RF000142 N/A Drain Coupling Kit Foruse when the drain/ventelbow has been removed in a horizontal leftinstallation.This
kitprevents condensate from getting in the inducerand routes the condensate to a drain.

ACCESSORIES
9
Model
Number
AFE180-60A
AMU / GMU
ASAS / GSAS
CFSB17 CFSB21 CFSB24
RF000142
CTK01* CTK02* CTK03* CTK04*
Description
Fossil Fuel Kit
Media Air Cleaners
Electronic
Air Cleaner
Counterflow Subbase
17.5"
Counterflow Subbase
21"
Counterflow Subbase
24.5"
Drain Coupling
Kit
Communicating
Thermostat Kit
Com Thermostat Kit- Modulating, High Def. Com Thermostat Kit-
Modulating, High Def
Com Thermostat Kit-
Modulating, High Def
DM97MC0603BN** X X X XXXX X
DM97MC0803BN** X X X XXXX X
DM97MC0804CN** X X X XXXX X
DM97MC1005CN**XXX XXXX X
DM97MC1205DN**XXX XXXX X
DC97MC0603BN**XXXX XXXX X
DC97MC0803BN**XXXX XXXX X
DC97MC0804CN**XXX X XXXX X
DC97MC1005CN**XXX XXXX X
Model
Number
0170K00000S 0170K00001S
DCVK-20
(C-CVENT2)
DCVK-30
(CVENT-3)
DEHUM1
EFR02
LPLP03 LPM-09
Description
Concentric Side Wall
Vent Kit (3")
Concentric Side Wall
Vent Kit (2")
Concentric Vent Kit (2") Concentric Vent Kit (3")
Dehumidistat
External Filter Kit
Low LP Tank Protection
L.P. Kit
DM97MC0603BN** X XXXXXXX
DM97MC0803BN** X XXXXXXX
DM97MC0804CN** X XXXXXXX
DM97MC1005CN**XXXXXXXX
DM97MC1205DN**XXXXXXXX
DC97MC0603BN**XXXXX XX
DC97MC0803BN**XXXXX XX
DC97MC0804CN**XXXXX XX
DC97MC1005CN**XXXXX XX
97% Mod Furnace Accessories

ACCESSORIES
10
Vent
Maintain 12" (18" for Canada)
minimum clearance above highest
anticipated snow level. Maximum of
24" above roof.
Combustion Air
Roof Boot/Flashing
(Field Supplied)
Support (Field Supplied)
45 Elbow
(Field Supplied)
Combustion Air
Vent
CONCENTRIC VENT CONVERSION KIT (DCVK-20 & DCVK-30 [CVENT-2 & CVENT-3*])
DCVK
(Vertical Installation)
DCVK
(Horizontal Installation)
The DCVK-20 (2") or the DCVK-30 (3") is a concentric vent
kit approved with furnaces listed in this manual.
This concentric vent kit allows for vertical or horizontal
vent termination. The illustrations give a brief view of
the kit and its application.
Vent
Combustion Air
Flush to
1" maximum
45 Elbow
(Field Supplied)
Combustion Air
Vent Strap
(Field Supplied)
EXTERNAL FILTER RACK (EFR02)
Used on 97% Upflow Modulating Furnaces
BLOWER DECK
SCREWS
SLOTS IN FILTER
CLEAR SCREWS
ON UNIT
FRONT
OF UNIT
RETURN AIR
CUTOUT AREA LOWER EDGE
SCREW
FILTER RACK ASSEMBLY
(FACE FILTER OPENING
TOWARDS FRONT
OF UNIT)
UNIT SIDE
PANEL
BASE
OF UNIT
See the section in this manual under "Vent Flue and Com-
bustion Air Pipe Terminations" for more information or
consult the Installation and Operating Instructions (IO-
619*).
DCVK-20 & DCVK-30 are also known as CVENT-2 & CVENT-3