Daikin DM92SS Installation Instructions Manual
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Daikin DM92SS Installation Instructions Manual

Single-stage gas furnace
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Installation Instructions
for DM92SS & DC92SS
Single-Stage 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
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.
Our continuing commitment to quality products may mean a change in specifications without notice.
©2014-2019, 2021
IOD-2010O
08/2021
the
American
National
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 or repair(hereinafter, "service") the equipment
specified in this manual should service the equipment.
The manufacturer will not be responsible for any injury
or property damage arising from improper 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 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.

TABLE OF CONTENTS

Safety Considerations .................................................3
Shipping Inspection .....................................................4
To The Installer ..........................................................5
Product Application ......................................................5
Clearances and Accessibility ..................................7
Existing Furnace Removal ........................................8
Thermostat Location ..................................................9
Installation Positions .................................................10
Furnace Suspension .................................................10
Drain Trap and Lines ................................................ 11
Leveling ...................................................................... 11
Connections ............................................................... 11
Drain Pan .................................................................... 11
Freeze Protection .................................................... 11
Materials and Joining Methods .............................12
Practices ....................................................................12
Termination Locations .............................................13
Requirements .............................................................13
Standard Furnace Connections.............................14
WARNING

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  • Page 1: Table Of Contents

    INSTALLATION INSTRUCTIONS Installation Instructions WARNING for DM92SS & DC92SS Single-Stage Gas Furnace Only personnel that have been trained to install, adjust, service or repair(hereinafter, “service”) the equipment (Type FSP CATEGORY IV Direct or specified in this manual should service the equipment.
  • Page 2 Troubleshooting Chart ..........39 Propane Gas Tanks and Piping ........29 Airflow ................41 Circulating Air & Filters ..........29 Wiring Diagram DM92SS* & DC92SS* ......42 Duct work - Air Flow ..........29 Special Instructions for Products Installed Checking Duct Static ..........30 in the State of Massachusetts ........43 Bottom Return Air Opening [Upflow Models] ..30...

  • Page 3: Safety Considerations

    SAFETY CONSIDERATIONS WARNING FIRE OR EXPLOSION HAZARD Adhere to the following warnings and cautions when installing, adjusting, altering, servicing, or operating the Failure to follow the safety warnings exactly could result furnace. To ensure proper installation and operation, in serious injury, death or property damage. thoroughly read this manual for specifics pertaining to the installation and application of this product.

  • Page 4: Shipping Inspection

    WARNING If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life. - 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: •...

  • Page 5: Electrostatic Discharge (Esd) Precautions

    2. Notify carrier promptly and request an inspection. 4. Discharge your body to ground before removing a 3. With concealed damage, carrier must be notified as new control from its container. Follow steps 1 through soon as possible - preferably within five days. 3 if installing the control on a furnace.

  • Page 6: Location Requirements & Considerations

    Direct vent (dual pipe) central forced air furnace in A copy of the National Fuel Gas Code (NFPA 54/ANSI which all combustion air supplied directly to the furnace Z223.1) can be obtained from any of the following: burners through a special air intake system outlined in these instructions.
  • Page 7 • Refer to Vent/Flue Pipe and Combustion Air Pipe • Seal off a non-direct vent furnace if it is installed -Termination Locations for appropriate termination near an area frequently contaminated by any of the locations and to determine if the piping system from above substances.

  • Page 8: Clearances And Accessibility

    DM92SS* MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS windows, exhaust fans, fireplace dampers and any (INCHES) other gas burning appliance to their previous...

  • Page 9: Thermostat Location

    Thermostat Location AVERTISSEMENT The thermostat should be placed approximately five feet from the floor on a vibration-free, inside wall in an area RISQUE D'INTOXICATION AU MONOXYDE DE CARBONE having good air circulation. Do not install the thermostat Si les étapes décrites ci-dessous ne sont pas suivies pour where it may be influenced by any of the following: chacun des appareils raccordés au système de ventilation au moment de sa mise en marche, cela peut entraîner une...

  • Page 10: Installation Positions

    If this furnace is to be installed in the same space with This furnace may be installed in an upright position or other gas appliances, such as a water heater, ensure there horizontal on either the left or right side panel. Do not is an adequate supply of combustion and ventilation air install this furnace on its back.

  • Page 11: Drain Trap And Lines

    3. Locate 24” x ¼” tube in the bag assembly. Manifold Pressure Pressure 4. Install one end on front cover pressure switch. Altitude Orifice Switch High 5. Route tube to lower port on collector box cover and Change Stage Stage cut off excess tubing.

  • Page 12: Dual Certification: Non-Direct/Direct Vent

    In addition to PVC and ABS pipe and fittings, Innoflue® by The use of Schedule 40 PVC cellular core DWV meeting Centrotherm Eco Systems and PolyPro® by M&G Duravent ASTM F891-1 or ABS cellular core (Foam Core) plastic pipe are also approved vent and combustion air materials for is also acceptable as a flue/vent and intake pipe material.

  • Page 13: Termination Locations

    • All terminations (flue and/or intake) must be located at ACCEPTABLE least 12 inches above ground level or the anticipated snow level. • Vent terminations (non-direct and direct vent) must terminate at least 3 feet above any forced air inlet located within 10 feet.

  • Page 14: Standard Furnace Connections

    standard “S636”. The primer and cement used must be of the same manufacturer as the vent system. For Royal Pipe System 636, use GVS-65 Primer (Purple) and GVS-65 PVC Solvent Cement. For IPEX System 636, use PVC/CPVC Primer, Purple or clear. Use PVC Solvent Cement (Gray). For Canadian installations, ABS may be used as a combustion air pipe only.

  • Page 15: Non-Direct Vent Installations

    The unused RF000142 drain fitting should be capped. (Figure 8B) A tee installed in the intake pipe is also an DM92SS* / DC92SS* Direct Vent (2-Pipe) & Non-Direct Vent (1-Pipe) acceptable method of catching condensation. It must have (1) (2) Maximum Allowable Length of Vent/FLue Pipe &...

  • Page 16: Upflow/Horizontal Models Only

    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 and routed to field supplied condensate disposal All piping and fittings must be joined per material manufacturers specifications...

  • Page 17: Non-Direct Vent (Single Pipe) Piping

    To use the alternate combustion air location: TEE (OPTIONAL) 1. Remove screws and combustion air flange from cabinet. 2. Insert cabinet plug in unused combustion air hole. COMBUSTION AIR INTAKE 12” MIN 3. Drill a pilot hole at the cabinet dimple (size dictated by (OPTIONAL) HEIGHT DIFFERENCE BETWEEN...

  • Page 18: Direct Vent (Dual Pipe) Piping

    Standard Horizontal Terminations Direct Vent (Dual Pipe) Piping Direct vent installations require both a combustion air intake and a vent/flue pipe. The pipes may be run horizontally 10”- 24” and exit through the side of the building or run vertically and exit through the roof of the building.

  • Page 19: Vent/Flue And Combustion Air Pipe Terminations

    Vent/Flue and Combustion Air Pipe Terminations Refer to the directions furnished with the Side Wall Vent The vent/flue and combustion air pipes may terminate Kit (p/n 0170K00000S or 0170K00001S) for installation vertically, as through a roof, or horizontally, as through an specifications.

  • Page 20: Field Supplied Drain

    Figure 21 Drain Exiting Right Side Coupling 1. Locate and Install the 45º pipe / hose drain coupling from the outside of the cabinet (barbed end goes 100 Degree in the cabinet) through hole in the right side of the Elbow cabinet and secure with two field supplied #8 self- tapping screws (see Figure 22).

  • Page 21: Upflow Model Installed Horizontally With Right Side Down

    9. Refer to Field Supplied Drain section for instructions on field supplied / installed drain on outlet of furnace trap. Hose #1 Hose #2 Hose #2 Hose #11 45 degree 45 degree barb-pipe barb-pipe adapter adapter Figure 23 Upflow Model Installed Horizontally with Left Side Down Installer selects right or left side drain Minimum 5 ½”...

  • Page 22: Upflow Model Installed Horizontally With Left Side Down - Alternate

    12. Install the non-grommet end of hose #11 from outside 2. Install 90°radius end of hose #2 on RF000142 drain the cabinet in the upper drain hole. Install on collector outlet and secure with a red clamp. box and secure with a silver clamp. 3.

  • Page 23: Drain Exiting Right Side

    Drain Exiting Left Side 1. Remove the drain trap and factory installed drain tube 1. Install a field supplied rubber coupling secured with assemblies. a 1 ¼” clamp to enable removing the trap for future 2. Remove two 1” plugs from right side of cabinet. cleaning.

  • Page 24: Electrical Connections

    1. Remove the factory installed drain trap and hose Hose #4 assemblies. Leave the 100° elbow inserted and clamped in the vent-drain elbow. 2. Remove two 1” plugs from left side of cabinet. 3. (Draining the Collector Box) Remove the cap from the left side of the collector box drain port (bottom in horizontal left position) and install it on right side drain port.

  • Page 25: 115 Volt Line Connections

    Wiring Harness The wiring harness is an integral part of this furnace. Wires CAUTION are color coded for identification purposes. Refer to the wiring diagram for wire routings. If any of the original To prevent unreliable operation or equipment damage, the wire as supplied with the furnace must be replaced, it must gas manifold pressure must be as specified on the unit rating plate.

  • Page 26: Single-Stage Heating Thermostat Application

    This furnace is equipped with a 40 VA transformer to Inlet gas supply pressures must be maintained within the facilitate use with most cooling equipment. Consult the ranges specified in the following table. The supply pressure wiring diagram, located on the blower compartment door, must be constant and available with all other household for further details of 115 Volt and 24 Volt wiring.
  • Page 27 The gas valve has a manual ON/OFF control located on the The orientation of the gas valve on the manifold must valve itself. This control may be set only to the “ON” or “OFF” be maintained as shipped from the factory. Maximum position.
  • Page 28 The gas piping may enter the left or right side of the furnace Manual Shut Off Valve cabinet. The installer must supply rigid pipe long enough to (upstream from reach the outside of the cabinet to seal the grommet cabinet Alternate ground joint pipe union) Union...

  • Page 29: Gas Piping Checks

    GAS PIPING CONNECTIONS Complete information regarding tank sizing for vaporization, recommended regulator settings, and pipe sizing is available from most regulator manufacturers and propane Gas Piping Checks gas suppliers. Before placing unit in operation, leak test the unit and gas connections.

  • Page 30: Checking Duct Static

    A closed return duct system must be used, with the return 4. Consult proper tables for the quantity of air. duct connected to the furnace. NOTE: Ductwork must never be attached to the back of the furnace. For upflow If the total external static pressure exceeds the maximum installations requiring 1800 CFM or more, use either two listed on the furnace rating plate, check for closed dampers, side returns or bottom return or a combination of side /...

  • Page 31: Filters - Read This Section Before Installing The Return Air Duct Work

    When the furnace is heating, the temperature of the return Upright Installations air entering the furnace must be between 55°F and 100°F. Depending on the installation and/or customer preference, differing filter arrangements can be applied. Filters can be Filters - Read This Section Before Installing The installed in the central return register or a side panel external Return Air Duct work filter rack kit (upflows).
  • Page 32 Air Cleaner Maximum Filter (Media) Air Cleaner Part Number Installation Location Heating Airflow Dimensions Family Si de or bottom return 1200 CFM 16 i n X 20 i n x 5¼" AM11-1620-5 Si de or bottom return 1600 CFM 16 i n X 25 i n x 5¼" AM11-1625-5 AM11-5 Si de or bottom return...

  • Page 33: Furnace Shutdown

    5. Move the furnace gas valve manual control to the If supply pressure differs from table, make the necessary OFF position. adjustments to pressure regulator, gas piping size, etc., 6. Wait five minutes then smell for gas. Be sure check and/or consult with local gas utility.

  • Page 34: Gas Input Rate Measurement (Natural Gas Only)

    Gas Input Rate Measurement (Natural Gas Only) The actual gas input rate to the furnace must never be greater than that specified on the unit rating plate. To measure natural gas input using the gas meter, use the following procedure. 1.

  • Page 35: Circulator Blower Speeds

    4. Connect all unused blower motor leads to the “PARK” SUPPLY terminals on the integrated control module. Any leads not connected to the “PARK” terminals must be taped. 5. Turn ON power to furnace. CUTAWAY OF DUCTWORK TO EXPOSE COIL 6.

  • Page 36: Cooling Mode

    Cooling Mode Primary Limit The primary limit control is located on the partition panel and The normal operational sequence in cooling mode is as monitors heat exchanger compartment temperatures. It is a follows: • R,Y, G thermostat contacts close, initiating a call for normally-closed (electrically), automatic reset, temperature- activated sensor.

  • Page 37: Diagnostic Chart

    3. Service integrated control module or connecting 3. Manual thermostat cycle. Lower the thermostat wiring following the discharge process in step 2. so that there is no longer a call for heat for 1 - 20 Use caution not to recharge your body with static seconds then reset to previous setting.

  • Page 38: Burners

    To remove filters from an external filter rack in an upright Flame Sensor (Qualified Servicer Only) upflow installation, follow the directions provided with Under some conditions, the fuel or air supply can create a external filter rack kit. nearly invisible coating on the flame sensor. This coating acts as an insulator causing a drop in the flame sense signal.

  • Page 39: Troubleshooting Chart

    TROUBLESHOOTING CHART Associated Fault Symptoms of Abnormal Cautions & Possible Causes Corrective Action Description(s) Operation LED Code Notes •Furnace fails to •Assure 115 and 24 volt •Turn power OFF NONE •No 115 volt power •Manual disconnect power to furnace prior to repair. operate.
  • Page 40 TROUBLESHOOTING CHART Associated Fault Cautions and Notes Symptoms of Abnormal Possible Causes Corrective Action Description(s) Operation LED Code •Circulator blower runs •Check primary/auxiliary •Primary or •Faulty pirmary or •Turn power OFF prior limit. Replace if continuously. No furnace auxiliary limit auxiliary limit switch.

  • Page 41: Airflow

    AIRFLOW DM92SS* & DC92SS* RISE RISE RISE RISE RISE HIGH 1260 1205 1153 1081 1023 1156 1115 1074 1019 DM92SS0403ANA* MED-LO 1028 HIGH 1545 1495 1438 1369 1295 1212 1141 1034 1322 1290 1246 1209 1149 1078 1013 DM92SS0402BN* MED-LO...

  • Page 42: Wiring Diagram Dm92Ss* & Dc92Ss

    WIRING DIAGRAM DM92SS* & DC92SS* Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.

  • Page 43: Special Instructions For Products Installed In The State Of Massachusetts

    Special Instructions for Products Installed in the State of Massachusetts 3. SIGNAGE. A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum height of eight (8) feet above grade VENT/FLUE directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment.

  • Page 44: 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.
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  • Page 48 CUSTOMER FEEDBACK Daikin is very interested in all product comments. Please fill out the feedback form on the following link: h�ps://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.

This manual is also suitable for:

Dc92ss

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