Daikin DV PTC 14 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

Daikin DV PTC 14 Series Specifications

General

Brand	Daikin
Model	DV PTC 14 Series
Category	Air Handlers
Language	English

Summary

1 Important Safety Instructions

General Safety Warnings and Precautions

Covers critical warnings, cautions, and installation personnel guidance for safe operation.

Carbon Monoxide Poisoning Hazard

2 Shipping Inspection

Parts, Handling, and Damage Check

Instructions for inspecting received unit for parts, proper handling, and shipping damage.

3 Codes and Regulations

4 Replacement Parts

5 Pre-Installation Considerations

5.1 Preparation and 5.2 System Matches

Covers site preparation, tool assembly, and ensuring manufacturer-approved system matches.

5.3 Interconnecting Tubing

5.4 Clearances

5.5 Horizontal Applications

6 Installation Location

6.1 Upflow Installation

Instructions for upflow installation, including drain pan and drip shield removal.

6.2 Horizontal Left Installation

Procedures for horizontal left orientation, including primary drain connection.

6.3 Downflow/Horizontal Right Installation

7 Refrigerant Lines

Tubing Size and Preparation

Proper techniques for cutting, preparing, and handling refrigerant tubing to prevent leaks.

7.3 Tubing Connections for TXV Models

Steps for connecting refrigerant tubing on TXV models, including pressure checks.

7.4 Thermal Expansion Valve System Adjustment

8 Condensate Drain Lines

9 Ductwork

9.1 Return Ductwork

Requirements for return ductwork placement and connection to prevent fume intake.

10 Return Air Filters

11 Electric Heat

12 Electrical and Control Wiring

12.1 Building Electrical Service Inspection

Verifying supply voltage agreement with unit nameplate requirements before connection.

12.2 Wire Sizing and Safety

Guidelines for selecting appropriate wire size, using copper conductors, and ensuring proper grounding.

12.3 Maximum Overcurrent Protection (MOP)

Requirements for NEC/CEC approved overcurrent protection devices like fuses or circuit breakers.

12.4 Electrical Connections – Supply Voltage

12.4.1 to 12.4.3 Electrical Connection Types

Details on connecting power supply for air handler only, non-breaker heat kits, and breaker heat kits.

12.5 Low Voltage Connections

Guidelines for connecting 24V control voltage for thermostats, condensers, and heat kits.

13 Achieving Airflow Low Leakage Rate

14 Start-Up Procedure

15 Regular Maintenance

24 Volt Thermostat Wiring

Non-Communicating Thermostat Connections

Wiring diagrams and terminal information for non-communicating thermostat system configurations.

Dehumidistat Installation

Auxiliary Alarm Switch Functionality

16 Circulator Blower

17 Troubleshooting

17.1 Electrostatic Discharge (ESD) Precautions

Essential steps to prevent damage to integrated control modules from static discharge.

18 Fully Communicating Daikin System

18.1 Overview

Explains the digital, two-way communication between components in a communicating system.

18.2 Airflow Consideration

Details how airflow demand is managed differently in communicating systems compared to traditional ones.

18.3 Control Wiring

Wiring requirements for connecting thermostats, indoor units, and outdoor units in communicating systems.

18.4 Advanced Features and Diagnostics

Accessing system information, advanced settings, and diagnostic features via menus.

18.5.1 Network Troubleshooting

18.5.2 System Troubleshooting

19 Start-Up Procedure

20 Regular Maintenance

Communications Troubleshooting Chart

Air Handlers Advanced Features Menu

22 Diagnostic Codes

23 Wiring Diagrams

3-Phase Heat Kit