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Islandaire EZ Series Installation Instructions & Owner's Manual
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Islandaire EZ Series Installation Instructions & Owner's Manual

Islandaire EZ Series Installation Instructions & Owner's Manual

Packaged terminal air conditioner/heat pump
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PACKAGED TERMINAL
AIR CONDITIONER/HEAT PUMP
INSTALLATION INSTRUCTIONS & OWNER'S MANUAL
EZ42/EZDR
ATTENTION INSTALLATION PROFESSIONAL
As a professional installer you have an obligation to know the product better than the customer. This includes all safety
precautions and related items.
Prior to actual installation, thoroughly familiarize yourself with this instruction manual. Pay special attention to all safety
warnings.
Often during installation or repair it is possible to place yourself in a position which is more hazardous than when the unit
is in operation.
Remember, it is your responsibility to install the product safely and to know it well enough to be able to instruct a customer
in its safe use.
Safety is a matter of common sense, a matter of thinking before acting. Most dealers have a list of specific good safety
practices, follow them.
The precautions listed in this Installation Manual are intended as supplemental to existing practices. However, if there is
a direct conflict between existing practices and the content of this manual, the precautions listed here take precedence.
- 1 -

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March 25, 2025

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Summary of Contents for Islandaire EZ Series

  • Page 1 PACKAGED TERMINAL AIR CONDITIONER/HEAT PUMP INSTALLATION INSTRUCTIONS & OWNER'S MANUAL EZ42/EZDR ATTENTION INSTALLATION PROFESSIONAL As a professional installer you have an obligation to know the product better than the customer. This includes all safety precautions and related items. Prior to actual installation, thoroughly familiarize yourself with this instruction manual. Pay special attention to all safety warnings.

  • Page 2: Table Of Contents

    CONTENTS IMPORTANT NOTE TO THE SERVICER UNIT FEATURES ................ 3 Read this manual and familiarize yourself with the specific items which must be adhered to before attempting to INSTALLATION INSTRUCTIONS ......... service this unit. The precautions listed in this Installation WIRING ..................

  • Page 3: Unit Features

    UNIT FEATURES • High Pressure Protection The unit shuts off automatically when the pressure in the system is over 638 This unit has many features which are different than psi, and within 10 minutes after the compressor turns off, those found on conventional PTAC units. The servicer the unit will restart when the pressure falls back below 551 must be familiar with these features in order to properly psi.
  • Page 4 • Permanently Lubricated Fan Motors - All units Overall unit efficiency over standard PTAC’s is have two fan motors for quiet operation and approximately 3% improvement. The compressor/de- maximum operating efficiency. humidification process is controlled by a humidistat (factory set at 50% RH), which is monitoring the Motors permanently lubricated...

  • Page 5: Installation Instructions

    INSTALLATION INSTRUCTIONS To ensure that the unit operates safely and efficiently, it must be installed, operated and maintained according to these installation and operating instructions and all local codes and ordinances or, in their absence, with the latest edition of the National Electric Code.
  • Page 6 Width: SLEEVE INSTALLATION Fit approximately 3 stud spaces. Wall sleeve location When making the wall opening, please observe the following requirements: A) The air inlet and outlet should be unblocked and the air can be delivered to every corner of the room. B) Install the unit in places that are away from heat source or sources of flammable gases.
  • Page 7 When replacing an old chassis with an existing grille or IMPORTANT NOTES: using a specialized grille in a new installation, please 1. The unit is equipped with a rubber grommet-mounted check with Islandaire engineering to determine if the new compressor. These grommets are factory set and chassis should...
  • Page 8 DR.PTAC UNITS (EZDR Series) Only on EZDR units (these units are equipped with the Make-up Air Dehumidifier option) - Perform the following steps prior to turning on unit for the first time to activate this option: STEP 1: STEP 2: TURN ON DR.

  • Page 9: Wiring

    Operating Voltage WIRING Voltage Utilization Range Unit Voltage Rating Cord connection to a wall socket is not permitted for 265V Minimum Maximum units. All 265V units must be hard-wired using the hard 230/ 208 wire kit or make use of the plug-in receptacle in the standard sub-base.

  • Page 10: Operating Instructions

    OPERATING INSTRUCTIONS WARM button Press this button to set room temperature warmer. Digital display In normal operation, it indicates Receiver of IR remote controller room TEMP; When pressing WARM signal (behind front panel). or COOL button, it indicates TEMP setting. In timer operation, it indicates timer setting.
  • Page 11 Press + or - button to set your desired temperature. The  A standard feature of the Islandaire electronic control setting temperature range is 60 - 90 °F (16 - 32 °C). system is the ’Low Temperature Protection’ option. If an Press the FAN button, to set your desired air flow rate: indoor temperature of 50 °F (or below) is detected, the...

  • Page 12: Maintenance And Cleaning

    DEHUMIDIFIER OPERATION The vent control allows outside air to be drawn into the (EZDR Series) conditioned area. This outside air can provide ventilation when the blower is operating, but it will increase the On EZDR units, the dehumidifier unit has a two-position heating or cooling load and operating costs.
  • Page 13 The following procedure is used to remove the intake filter: 1. Grasp each filter by its molded handle, located on the front edge of the front, below the discharge grille. 2. Pull the filter straight up and remove. 3. Clean filter with vacuum or with running water. Reverse this procedure to reinstall the filter Filter is removed by grasping the filter's top and...

  • Page 14: Normal Operating Sounds And Condition

    Clearance Check WARNING Clearances around the unit should also be checked to DO NOT USE COMMERCIAL GRADE COIL CLEANERS. make sure that the intake air and discharge air paths SOME OF THESE CLEANERS MAY CONTAIN ETHYLENE have not become blocked or restricted. A minimum of DIAMINE TETRACETIC ACID (EDTA) WHICH CAN SHORTEN THE LIFE OF THE CONDENSER COIL.

  • Page 15: Diagnostic Codes

    DIAGNOSTIC CODES The Diagnostic Maintenance provides detailed information on PTAC control operation and operational status including present modes, failures, airflow restriction warnings , operating temperatures, and past failures. To enter Diagnostic Status Report mode, press and hold the temp down ( − ) key and the FAN SPEED key simultaneously for a period of five (5) seconds.

  • Page 16: Troubleshooting

    TROUBLESHOOTING POSSIBLE CAUSES SOLUTIONS UNIT DOES NOT START ● Unit may have become unplugged ● Check that plug is plugged securely in wall receptacle. Note: Plug has a test/reset button on it. Make sure the plug has not tripped. ● ●...
  • Page 17 NOTES ______________________________________________________________________________________________ ______________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ __________________________________________________________________________________________________________ -17-...
  • Page 18 R.E. HANSEN INDUSTRIES, INC. DBA ISLANDAIRE Address: 500 Middle Country Road St. James, NY 11733 Phone: (631) 471-2900 Fax: (631) 471-2913 E-mail: sales@islandaire.com Doc. No. 6140432 Rev. C www.islandaire.com...

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