Daikin DV31PTCC14 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
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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

Shipping Inspection

Inspect the unit upon receipt for shipping damage and verify all required components are present and intact.

Codes & Regulations

Comply with applicable national, local, and regional codes for installation and refrigerant handling.

Pre-Installation Considerations

Preparation

Read all instructions, assemble tools, and ensure all necessary hardware and supplies are on hand before starting installation.

System Matches

Ensure the entire system (indoor/outdoor sections) is manufacturer approved and AHRI listed; unmatched systems are not permitted.

Interconnecting Tubing

Guidelines for refrigerant tubing length, connections, and required installation clearances.

Installation Location and Components

Installation Location

Details for installing the unit in upflow, horizontal left, and downflow/horizontal right configurations.

Refrigerant Lines

Guidelines for installing refrigerant lines, including tubing preparation, connections, and TXV adjustment.

Condensate Drain Lines

Proper installation of condensate drain lines, including pitch, insulation, and secondary drain use.

Electrical, Heating, and Blower Setup

Electric Heat

Instructions for installing and configuring electric heat kits, including temperature rise tables.

Electrical and Control Wiring

Guidance on wire sizing, overcurrent protection, and connecting supply and low voltage wiring.

Circulator Blower

How to select and adjust blower speeds for optimal airflow and system performance.

Operation and Troubleshooting

Start-Up Procedure

Essential checks and steps to ensure proper unit operation before initial start-up.

Troubleshooting

Guidance for identifying unit problems, fault codes, and corrective actions from troubleshooting charts.

Diagnostic Codes

Understand the 7 segment LED codes that indicate specific unit conditions and faults.

Daikin DV31PTCC14 Series Specifications

General

Series	DV31PTCC14
Category	Air Handlers
Voltage	208/230V
Phase	1
Refrigerant	R-410A
Maximum External Static Pressure	0.8 in. W.G.