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Installation Instructions for
DR80SC Ultra Low NOx Gas Variable Speed Furnace
CATEGORY I CATÉGORIE I
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.
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 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.
R
ECOGNIZE THIS SYMBOL
AS A SAFETY PRECAUTION
NOTE: Please contact your distributor or our website listed below
for the applicable Specification Sheet referred to in this manual.
Our continuing commitment to quality products may mean a change in specifications without notice.
IOD-2041
04/2024
Installer: Affix all manuals
adjacent to the unit.
©
2024
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 (IN-
CLUDING CHILDREN) WITH REDUCED PHYSICAL, SENSORY OR
MENTAL CAPABILITIES, OR LACK OF EXPERIENCE AND KNOWL-
EDGE, UNLESS THEY HAVE BEEN GIVEN SUPERVISION OR IN-
STRUCTION 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 EQUIP-
MENT SPECIFIED IN THIS MANUAL, ONLY LICENSED PERSONNEL
SHOULD SERVICE THE EQUIPMENT. IMPROPER SUPERVISION, IN-
STALLATION, ADJUSTMENT, SERVICING, MAINTENANCE OR REPAIR
OF THE EQUIPMENT SPECIFIED IN THIS MANUAL, OR ATTEMPT-
ING 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
THIS FURNACE MAY BE PAIRED WITH A COOLING UNIT THAT
USES R-32 REFRIGERANT. IF THE COOLING 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 410-A OR R-32 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.
80% HEX
WARNING
WARNING
WARNING
DO NOT LIFT
PRODUCT USING
HEAT EXCHANGER
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Related Manuals for Daikin DR80SC
Summary of Contents for Daikin DR80SC
- Page 1 INSTALLATION INSTRUCTIONS Installation Instructions for WARNING DR80SC Ultra Low NOx Gas Variable Speed Furnace ONLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL, ADJUST, CATEGORY I CATÉGORIE I SERVICE, MAINTENANCE OR REPAIR (HEREINAFTER, “SERVICE”) THE EQUIPMENT SPECIFIED IN THIS MANUAL SHOULD SERVICE THE EQUIPMENT.
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Page 2: Table Of Contents
TABLE OF CONTENTS This device, which was assembled by Daikin Comfort Technologies Manufacturing, L.P., contains a component that is classified as an Safety Considerations..........3 intentional radiator. This intentional radiator has been certified by the Electrostatic Discharge (ESD) Precautions ....6 FCC: FCC ID QOQBGM111. -
Page 3: Safety Considerations
Safety Considerations A gas-fired furnace for installation in a residential garage must be installed as specified in the LOCATION REQUIREMENTS IMPORTANT NOTE: This unit is designed to meet the NOX AND CONSIDERATIONS section of this manual. requirement of 14Ng/J maximum as required by the South This furnace may be used as a construction site heater only if Coast Air Quality Management District and the San Joaquin certain conditions are met. - Page 4 WARNING If the information in these instructions is not CARBON MONOXIDE POISONING HAZARD followed exactly, a fire or explosion may result Failure To Follow The Steps Outlined Below For Each Appliance causing property damage, personal injury or Connected To The Venting System Being Placed Into Operation loss of life.
- Page 5 RISQUE D’INTOXICATION AU MONOXYDE DE CARBONE Si les étapes décrites ci-dessous ne sont pas suivies pour chacun des appareils raccordés au système de ventilation au moment de sa mise en marche, cela peut entraîner une intoxication au monoxyde de carbone ou la mort. Les étapes suivantes doivent être suivies pour chacun des appareils raccordés au système de ventilation au moment de sa mise en marche, alors que tous les autres appareils raccordés au système de ventilation ne sont...
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Page 6: Electrostatic Discharge (Esd) Precautions
Additional Safety Considerations 2. Firmly touch a clean, unpainted, metal surface of the furnaces near the control. Any tools held in a person’s • This furnace is approved for Category I Venting only. hand during grounding will be discharged. • Provisions must be made for venting combustion 3. -
Page 7: Location Requirements And Considerations
• The vent system is permanently installed per these The rated heating capacity of the furnace should be greater installation instructions. than or equal to the total heat loss of the area to be heated. The total heat loss should be calculated by an approved •... -
Page 8: Clearances And Accessibility
B1 vent. Installation Positions Top - 1" The DR80SC furnace may be installed in an upright position Back - 0" or horizontal on either the left or right side panel. Do not install this furnace on its back. For vertical installations,... -
Page 9: Horizontal Installation
Line contact to framing is permitted when installed in the horizontal configuration. Line contact is defined as the portion of the cabinet that is formed by the intersection of the top and side. ACCESSIBILITY CLEARANCE, WHERE GREATER, SHOULD TAKE PRECEDENCE OVER MINIMUM FIRE PROTECTION CLEARANCE. -
Page 10: Thermostat Location
windows and all doors between the space in which Improved construction and additional insulation in buildings the appliance(s) connected to the venting system have reduced heat loss by reducing air infiltration and escape are located and other spaces of the building. Turn on around doors and windows. -
Page 11: Masonry Chimneys (Cat. I Furnaces Only)
Electrical Connections WARNING WARNING To prevent possible personal injury or death due to asphyxiation, common venting with other manufacturer’s HIGH VOLTAGE induced draft appliances is not allowed. To avoid personal injury or death due to electrical shock, disconnect electrical power The minimum vent diameter for the Category I venting system before servicing or changing any electrical wiring. -
Page 12: Junction Box Relocation
Junction Box Relocation This furnace is equipped with a blower door interlock switch which interrupts unit voltage when the blower door is opened WARNING for servicing. Do not defeat this switch. Gas Supply and Piping Edges of sheet metal holes may be sharp. Use gloves as a precaution when removing hole plugs. -
Page 13: Gas Piping Connections
• Use ground joint unions. Manifold Manifold CO2% • Install a drip leg to trap dirt and moisture before it can 80% Model Pressure at Pressure at Natural Gas enter the gas valve. The drip leg must be a minimum 5000 ft 7500 ft of three inches long. -
Page 14: Upflow Installations
Upflow Installations Duct systems and register sizes must be properly designed for the CFM and external static pressure rat ing of the A ground joint union, drip leg, and manual shutoff valve must furnace. Ductwork should be designed in accor dance with also be supplied by the installer. -
Page 15: Return Air Ductwork
Minimum Recommended MODEL WARNING Filter Size^ 1 - 16 X 25 Side or 1 - 14 X DR80SC0604BU Edges of sheet metal holes may be sharp. Use gloves as 24 Bottom Return a precaution when removing sheet metal from return air 2 - 16 X 25 Side Return, openings. -
Page 16: Quick Start Guide For Communicating Outdoor Units
Cloud HVAC phone application designed to improve the con- OUTDOOR INDOOR BOARD TERMINAL BOARD TERMINAL tractor’s setup / diagnostic experience. Users can see spe- CONNECTIONS CONNECTIONS cific model information, review active diagnostic error codes, observe system status during operation, make system menu adjustments, add site visit notes and run system testing of all operational modes (heat / cool / fan) directly from the phone. -
Page 17: Quick Start Guide For Non-Communicating Outdoor Units
a. Charge the outdoor unit as required using the INDOOR BOARD TERMINAL charging information provided with the outdoor CONNECTIONS equipment. 4) Confirm thermostat heating and cooling calls function properly with equipment. Quick Start Guide For 24 VAC Thermostat Non-Communicating Outdoor Units Remote Condensing Unit (Two-Stage Cooling) - Page 18 2) Download the Cool Cloud HVAC phone application. Indoor Board Terminal 24 VAC NOTE: When new versions of Bluetooth Communication Soft- Connections Thermostat ware and Furnace Control Software are available, the phone application notifies the user. Software updates are classified as either optional or mandatory and installed by using the phone application.
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Page 19: Push Button Menu
Auxiliary Alarm Switch The control is equipped with a 24VAC Aux Alarm to be used for a condensate switch install (designated by CONDENSATE IN/OUT on the control). By default, the connected AUX switch is normally closed and opens when the water level in the evaporator coil base pan reaches an undesirable level. - Page 20 Low Voltage A2L Alarm Profile C (3) ramps up to 85% of the full cooling demand • airflow and operates there for approximately 7 1/2 The A2L alarm connection provides 24VAC for field alarm minutes. The motor then steps up to the full demand wiring connections.
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Page 21: Start-Up Procedure And Adjustment
through the low voltage openings in the left or right side of • If it is necessary for the installer to supply additional the furnace blower compartment. Please see the electrical line voltage wiring to the inside of the furnace, the section for the location of the R-32 Sensor connection on wiring must conform to all local codes, and have a the control board. - Page 22 5. Move the furnace gas valve manual control to the OFF reset to previous setting. position. NOTE: If the condition which originally caused the lockout 6. Wait five minutes then smell for gas. Be sure check near still exists, the control will return to lockout. Refer to the the floor as some types of gas are heavier than air.
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Page 23: Gas Manifold Pressure Measurement And Adjustment
1. Turn OFF gas to furnace at the manual gas shutoff INLET GAS SUPPLY PRESSURE valve external to the furnace. Natural Gas Minimum: 4.5" w.c. Maximum: 10.0" w.c. 2. Turn OFF all electrical power to the system. Table 9 3. Outlet pressure tap connections: 9. -
Page 24: Operational Checks
3. If the 1/2 cu. ft. dial was used, multiply your number 3. Subtract the return air temperature from the supply X 2. EXAMPLE: If it took 23 seconds to complete one air temperature to determine the air temperature rise. revolution of the 1/2 ft. -
Page 25: Safety Circuit Description
If the total external static pressure exceeds the maximum normally closed (electrically), automatic reset, temperature listed on the furnace rating plate, check for closed dampers, activated sensor. The limit guards against the overheating registers, undersized and/or oversized poorly laid out duct resulting from insufficient air passing over the heat exchanger. -
Page 26: Cleaning (Qualified Servicer Only)
and/or corrosion. Check wires for damage. The Ultra low NOx furnace uses a premix burner. The burner box is sealed to achieve safe and reliable operation. • Filters: Check filters and determine if any need to be replaced. Cleaning (Qualified Servicer Only) •... -
Page 27: Component Id
Component ID Tubular Heat Exchanger Pressure Sensor Assembly Flue Pipe Connection Gas Line Entrance Gas Valve Inducer Gas Manifold Assembly Grommet Burner Assembly Integrated Control Module Blower Door Interlock Switch Circulator Blower Transformer Tubular Heat Exchanger 8 Wiring Harness Grommet Pressure Switch 9 Burner Assembly Flue Pipe Connection... -
Page 28: Menu Options
Menu Options LED Display Menu Description LED Display Menu Description Gas Heat Airflow Trim (default = 0%) Enable or disable inverter boost operation. (Compressor speed may M aximum Co mpresso r Run Time B etween Defro st Cycles (default ... -
Page 29: Status Codes
Status Codes Display Description of System Status Compressor Cooling, Low Stage (non-communicating units) Compressor Cooling, High Stage (non-communicating units) Compressor Heat, Low Stage (non-communicating units) Compressor Heat, High Stage (non-communicating units) Compressor Cooling, Single-Stage (single stage non-comm. units) ... -
Page 30: Troubleshooting Chart
Troubleshooting Chart Symptom Fault Description Corrective Actions LED Status Equipment lacks shared data Populate shared data set using memory card Normal operation None No 115 power to furnace or no 24 volt power to Restore high voltage power to furnace and integrated Furnace fails to operate integrated control module control module. - Page 31 Troubleshooting Chart Symptom Fault Description Corrective Actions LED Status Analog Pressure Sensor Reference Error. Furnace fails to operate APS reference is out of the range (5.0+/-0.2)V Verify electrical connections to pressure sensor for 5 seconds Analog Pressure Sensor Null Error. ...
- Page 32 Troubleshooting Chart Symptom LED Status Fault Description Corrective Actions Locate and correct gas interruption Check front cover pressure switch operation and Furnace lockout due to an excessive verify proper drainage (hose, wiring, contact number of ignition “retries” (3 total) operation), correct if necessary Failure to establish flame Replace or realign igniter ...
- Page 33 Troubleshooting Chart Symptom Fault Description Corrective Actions LED Status Polarity of 115 volt AC is reversed Correct polarity, check and correct wiring if necessary Furnace fails to operate Poor unit ground Verify proper ground, correct if necessary Gas valve is not energized when it should be Check Wiring in gas valve circuit Furnace fails to operate ...
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Page 34: Wiring Diagram
Wiring diagram 115 VAC/ 1 Ø /60 HZ POWER SUPPLY WITH ID BLOWER OVERCURRENT PRESSURE SWITCH PROTECTION DEVICE SURFACE WARNING:DISCONNECT IGNITER POWER BEFORE SERVICING. WIRING 2 CIRCUIT TO UNIT MUST BE CONNECTOR PROPERLY POLARIZED DISCONNECT AND GROUNDED. GAS VALVE COLOR PRESSURE WIRE TRANSDUCER... -
Page 35: 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 Sta�c Pressure IN. - 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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