Daikin DR80TC - User Manual

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SS-DR80TC_ DD80TC www.daikincomfort.com 12/24

DR80TC / DD80TC

■ Contents

Nomenclature.............................................2

 ................................3

 .................................................5

 ................................................7

Wiring Diagram ....................................... 10

 ...............................................11

Two-Stage, Variable Speed

ECM Gas Furnace

80% AFUE

Heating Input: 60,000 –100,000 BTU/h

■ Standard Features

• Compable with Daikin One+ smart thermostat

and other Daikin communicang equipment

• Heavy-duty stainless-steel dual-diameter,

tubular heat exchanger

• Two-stage gas valve provides quiet,

economical heang

• Durable Silicon Nitride igniter

• Quiet two-speed dra inducer

• Self-diagnosc control board with constant memory

fault code history output to a dual 7-segment display

• Color-coded low-voltage terminals with provisions

for electronic air cleaner and humidier

• Ecient and quiet variable-speed

airow system gently ramps up or down

according to heang or cooling demand

• Mulple connuous fan speed opons

oer quiet air circulaon

• Auto-Comfort and enhanced dehumidicaon

modes available

• California Low NO

emissions-compliant

models available

• Can no longer be installed in California’s

South Coast Air Quality Management District

(SCAQMD) on or aer October 1, 2019

• AHRI Cered; ETL Listed

■ Cabinet Features

• Mul-posion installaon:

DR80TC: Upow, horizontal le or right.

DD80TC: Downow, horizontal le or right.

Convenient le or right connecon for gas

and electrical service

• Cabinet air leakage (Q

Leak

) ≤ 2%

• Heavy-gauge steel cabinet with

durable baked-enamel nish

• Fully insulated heat exchanger

and blower secon

         

       



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











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The Daikin DR80TC/DD80TC is a two-stage, variable-speed ECM gas furnace designed for residential heating applications, offering 80% AFUE (Annual Fuel Utilization Efficiency). It operates with a heating input range of 60,000 to 100,000 BTU/h.

Function Description:

This gas furnace provides efficient and economical heating through its two-stage gas valve, which allows for quieter operation by modulating the heat output according to demand. The variable-speed ECM (Electronically Commutated Motor) airflow system gently ramps up and down, ensuring consistent and comfortable air distribution. It is compatible with Daikin One+ smart thermostats and other Daikin communicating equipment, enabling advanced control and integration within a home comfort system. The furnace can also operate in Auto-Comfort and enhanced dehumidification modes, contributing to improved indoor air quality and comfort.

Important Technical Specifications:

Heating Capacity (High Fire Input): Available in models ranging from 60,000 BTU/h to 100,000 BTU/h.
Heating Output (High Fire, below): Natural Gas and LP Gas outputs range from 48,000 BTU/h to 80,000 BTU/h depending on the model.
Low Fire Input: Ranges from 42,000 BTU/h to 70,000 BTU/h.
Low Fire Output (below): Natural Gas and LP Gas outputs range from 33,600 BTU/h to 56,000 BTU/h.
AFUE: 80% for all listed models, indicating high energy efficiency.
Available AC @ 0.5" ESP: Ranges from 1.5-3.0 to 2.5-5.0, signifying its compatibility with various air conditioning systems.
Temp Rise Range (°F) High/Low Fire: Varies by model, typically between 15-45°F and 30-60°F.
Circulator Blower:
- Size (D x W): 10" x 8" or 11" x 10".
- Horsepower - RPM: 1/2 or 3/4 HP.
- Speed: Variable.
- Vent Diameter: 4".
- No. of Burners: 3, 4, or 5, depending on the model.
Electrical Data:
- Min. Circuit Ampacity: Ranges from 7.6 to 10.8 amps.
- Max. Overcurrent Device (amps): 15 amps for all models.
- Power Supply: 115 VAC, 60 Hz, single-phase electrical supply.
Ship Weight: Ranges from 105 lbs to 129 lbs.
Cabinet Air Leakage (QLeak): ≤ 2%, ensuring minimal air loss.
Gas Service Connection: ½" FPT.
Minimum Filter Sizes: Varies by model, e.g., (2) 10x20 or (1) 16x25 for some DD80TC models, and (1) 16x25 for some DR80TC models. Larger filters or centrally located filters may be used.

Usage Features:

Multi-position Installation:
- DR80TC: Designed for upflow, horizontal left, or horizontal right installations.
- DD80TC: Designed for downflow, horizontal left, or horizontal right installations.
Convenient Connections: Features left or right connections for gas and electrical service, simplifying installation.
Quiet Operation: The two-speed draft inducer and variable-speed ECM blower contribute to significantly quieter operation compared to single-speed furnaces.
Multiple Continuous Fan Speed Options: Offers various settings for continuous air circulation, enhancing comfort and air quality.
California Low NOx Emissions-Compliant Models: Specific models are available that meet California's stringent Low NOx emissions standards, though installation restrictions apply in certain districts (e.g., SCAQMD after October 1, 2019).
Accessories: A range of accessories is available, including Fossil Fuel (Dual Fuel) Kits, High-Altitude Kits (for various elevations), Downflow Sub-Bases (for DD80TC models), and LP Conversion Kits.

Maintenance Features:

Self-Diagnostic Control Board: Equipped with a control board that has constant memory fault code history, displayed on a dual 7-segment display. This feature aids in quick and accurate troubleshooting.
Color-Coded Low-Voltage Terminals: Provides provisions for electronic air cleaner and humidifier connections, simplifying wiring and maintenance of these components.
Durable Construction: Features a heavy-duty stainless-steel dual-diameter, tubular heat exchanger and a heavy-gauge steel cabinet with a durable baked-enamel finish, designed for longevity.
Fully Insulated Sections: The heat exchanger and blower sections are fully insulated, contributing to efficient operation and reduced noise.
Recommended Front Clearance: A 24" front clearance is recommended for servicing or cleaning, ensuring easy access for maintenance tasks.
Warranty: Includes a Lifetime Heat Exchanger Limited Warranty (for as long as you own your home), a 12-Year Unit Replacement Limited Warranty, and a 12-Year Parts Limited Warranty, subject to online registration within 60 days of installation and other requirements (e.g., annual maintenance for Unit Replacement Warranty). Specific terms and conditions apply, and vary by region.