Daikin DV49PTCD14 Series - User Manual

DV**PTC*14 SERIES AIR HANDLERS
IOD-4021K
06/2021
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.
INSTALLATION INSTRUCTIONS
www.daikincomfort.com
Our continuing commitment to quality products may mean a change in specications without notice.
19001 Kermier Road Waller, TX 77484
Index
1 Important Safety Instructions ................................................................ 2
2 Shipping Inspection ............................................................................... 3
2.1 Parts ............................................................................................... 3
2.2 Handling .......................................................................................... 3
3 Codes & Regulations ............................................................................. 3
4 Replacement Parts ................................................................................. 3
5 Pre-Installation Considerations ............................................................ 3
5.1 Preparation ..................................................................................... 3
5.2 System Matches ............................................................................. 3
5.3 Interconnecting Tubing ................................................................... 4
5.4 Clearances ...................................................................................... 4
5.5 Horizontal Applications ................................................................... 4
6 Installation Location ......................................................... 4
6.1 Upow Installation ........................................................................... 4
6.2 Horizontal Left Installation .............................................................. 4
6.3 Downow/Horizontal Right Installation ........................................... 4
7 Refrigerant Lines .................................................................................... 6
7.1 Tubing Size ..................................................................................... 6
7.2 Tubing Preparation ......................................................................... 6
7.3 Tubing Connections for TXV Models .............................................. 7
7.4 Thermal Expansion Valve System Adjustment ............................... 8
8 Condensate Drain Lines .................................................. 8
9 Ductwork ......................................................................... 10
9.1 Thermal Expansion Valve System Adjustment ...................................... 10
10 Return Air Filters .................................................................................. 10
11 Electric Heat .......................................................................................... 10
12 Electrical and Control Wiring ..............................................................11
12.1 Building Electrical Service Inspection ..........................................11
12.2 Wire Sizing ...................................................................................11
12.3 Maximum Overcurrent Protection (MOP) ....................................11
12.4 Electrical Connections – Supply Voltage .................................... 12
12.4.1 Air Handler Only (Non-Heat Kit Models) .................................. 12
12.4.2 Air Handler - Non-Circuit Breaker Heat Kits ............................. 12
12.4.3 Air Handler With Circuit Breaker Heat Kit ................................ 12
12.5 Low Voltage Connections ........................................................... 12
13 Achieving 1.4% and 2.0% Airow Low Leakage Rate ......................11
14 Start-Up Procedure ............................................................................. 12
15 Regular Maintenance ......................................................................... 12
16 Circulator Blower ................................................................................ 15
17 Troubleshooting ................................................................................. 17
© 2014 - 2021
If an “Ec” error is encountered on
startup, verify that the electric heater
DIP switches have been set to the
appropriate heater size. See pages
14-17 for the heater kit airflow
delivery and DIP switch se�ngs.
NOTICE

Summary

Important Safety Instructions

General Safety Warnings

General safety precautions for operating and servicing equipment.

Personnel & High Voltage Safety

Critical warnings about disconnecting power to prevent injury or death.

Refrigerant Lines

Tubing Size and Preparation

TXV Model Connections

Condensate Drain Lines

Thermal Expansion Valve Adjustment

Procedure for adjusting TXV for optimal subcooling and superheat.

Electric Heat

Heat Kit Installation and Formulas

Information on installing electric heat kits and calculating temperature rise.

Electrical and Control Wiring

Service Inspection, Wire Sizing, MOP

Inspection, sizing, and overcurrent protection for electrical connections.

Start-Up Procedure

Supply Voltage and Low Voltage Connections

Pre-Start-Up Checks

Essential checks before initiating unit start-up.

Circulator Blower

Blower Speed Adjustment and Airflow

Adjusting blower speed for correct airflow and system performance.

Troubleshooting

Electrostatic Discharge (ESD) Precautions

Procedures to prevent electrostatic discharge damage to electronic components.

Fully Communicating Daikin System

Overview and Airflow Considerations

Network Troubleshooting

Diagnostic Codes

7 Segment LED Code Descriptions

List of diagnostic codes displayed on the 7 segment LED and their conditions.

Wiring Diagrams

High and Low Voltage Diagrams

Daikin DV49PTCD14 Series Specifications

General

Brand	Daikin
Model	DV49PTCD14 Series
Category	Air Handlers
Language	English