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DFC/DFH Series Light Commercial Packaged Heating and
Cooling Unit 7.5T to 12.5T
Installation Instructions
Our continuing commitment to quality products may mean a change in specifications without notice.
©2022
IOD-1060A
9/2022
ナンバー ：
B150
会社名 ：
DAIKIN COMFORT TECHNOLOGIES MANUFACTURING, L.P.
作 成日 ：
2022/2/25
19001 Kermier Rd., Waller, TX 77484
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. 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,
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 TRAINING MAY RESULT IN
PRODUCT DAMAGE, PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH.
DO NOT BYPASS SAFETY DEVICES
www.daikincomfort.com
INSTALLATION INSTRUCTIONS
WARNING
WARNING
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Table of Contents
Related Manuals for Daikin DFC090 Series
Summarization of Contents
General Information
Pre-Installation Checks
Read all instructions before installation and gather necessary tools and supplies.
Unit Precautions
Key precautions for safe unit operation and maintenance.
Roof Curb Installation Guidelines
Guidelines for roof curb installation and compliance with codes.
Clearances
Unit Clearances
Required clearances for safety, service, and proper unit airflow.
Roof Curb and Duct Connections
Proper installation of roof curb and duct connections on rooftop.
Post-Installation Curb Checks
Verifying gasket application and curb integrity post-installation.
Rigging and Handling
Rigging Details and Brace Removal
Instructions for lifting, moving unit, and removing shipping components.
Weights and Center of Gravity
Weight and CG Data
Data for rigging requirements, including unit weights and center of gravity.
Electrical Wiring
Power Supply and Wire Sizing
Requirements for three-phase power supply and proper wire sizing.
Voltage, Grounding, and Conduit
Voltage considerations, grounding, conduit, and weatherproofing requirements.
Airflow and Condensate Management
Ductwork Installation
Guidelines for supply duct installation and use of flexible connections.
Condensate Drain Management
Procedures for condensate drain connection and periodic pan cleaning.
Startup, Adjustments, and Checks
Pre-Startup Procedures
General warnings, steps, and checks prior to unit startup.
Installation and System Checks
Contractor's duties for proper installation and functional system checks.
Pre-Startup Electrical Precautions
Verifying grounding, supply voltage, and utilization voltage range.
Air Flow Adjustments
Voltage and Control Checks
Understanding voltage, unbalance, and checking control transformer.
Blower Speed Selection
Selecting blower speed taps for cooling, heating, and heat pump operations.
Heat Pump Operation
Cooling and Heating Cycles
Operation of the heat pump in cooling and heating modes.
Defrost Control
Explanation of defrost accumulation and termination triggers.
Maintenance
Routine Maintenance Tasks
Recommended annual maintenance tasks for system longevity.
Filter and Coil Maintenance
Filter replacement and cleaning of the outside coil.
Motor Lubrication and Cabinet Care
Motor bearing lubrication and cabinet finish maintenance.
Troubleshooting
Heat Pump Operation Issues
Common heat pump problems like airflow, undercharge, and valve issues.
Reversing Valve Malfunctions
Troubleshooting steps for a reversing valve that fails to shift.
Appendix A: Blower Performance Data
AC Blower Performance Data
Blower performance data for AC models across tonnages.
Heat Pump Blower Performance Data
Blower performance data for Heat Pump models across tonnages.
Appendix B: Electrical Data
Electrical Specifications
Comprehensive electrical specifications for various models.
Appendix C: Unit Dimensions
Unit Dimension Drawings
Provides physical dimensions for DFC and DFH models.
Appendix D: Min-Max Airflow
Airflow Requirements
Minimum and maximum CFM for electric heat and cooling operations.
Wiring Diagram
Power and Control Wiring Diagram
Detailed wiring diagram for power and control circuits.
Start-Up Checklist
Pre Start-Up Verification
Steps to verify before initiating unit startup procedures.
Start-Up Data Recording
Fields for recording electrical, blower, temperature, and pressure data.
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