Islandaire EZ Series 42 Installation and operation manual

EZ Series 42 & EZ Series DR (DR.PTAC)
42” W x 16” H PTAC/PTHP
Perfect t for Replacing Existing 42” x 16” Units and for New
Construction Projects
Engineering Manual
MANUFACTURER OF QUALITY AIR CONDITIONING AND HEATING PRODUCTS
6140207 Rev. 061322
AHRI Certication applicable to EZ42
models only

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Table of Contents
INTRODUCTION ............................................................... 1
APPLICATIONS.................................................................. 2
New Construction....................................................................... 2
Retrot/Replacement.................................................................. 2
Application Considerations....................................................... 3
Guaranteed Quality .................................................................... 3
Indoor Air Quality - DR. PTAC (EZDR Series Units Only). 3
PRODUCT OVERVIEW ..................................................... 4
Quiet Operation .......................................................................... 4
Durable Construction ................................................................ 4
Seacoast Construction................................................................ 4
CHASSIS FEATURES AND BENEFITS ............................. 6
Slide Out Chassis......................................................................... 6
Wall Sleeve ................................................................................... 6
Exterior Louver/Grilles –........................................................... 6
Removable Front Panel .............................................................. 6
Discharge Grille........................................................................... 6
Tangential Blower Wheel........................................................... 7
Slinger Fan ................................................................................... 7
Venturi Shroud............................................................................ 7
Return Air Filters........................................................................ 7
Fresh Air Vent.............................................................................. 7
ORDERING DATA  EZ SERIES 42.................................... 8
Model Nomenclature.................................................................. 8
Replacement Guide..................................................................... 8
PERFORMANCE DATA  EZ SERIES 42 ........................... 9
Performance Data for EZ42 Series............................................ 9
Heating options ........................................................................... 9
Electrical....................................................................................... 9
ORDERING DATA  EZ SERIES DR DR.PTAC.............. 10
Model Nomenclature.................................................................. 10
Replacement Guide..................................................................... 10
PERFORMANCE DATA  EZ SERIES DR DR.PTAC ..... 11
Performance Data for EZDR Series.......................................... 11
Heating options ........................................................................... 11
Electrical....................................................................................... 11
DR. PTAC FEATURES......................................................... 12
DR.PTAC INFORMATION................................................. 13
DIMENSIONAL DRAWINGS............................................. 14
OPTIONS AND ACCESSORIES......................................... 15
Hard Wire Kit.............................................................................. 15
Remote Control........................................................................... 15
Optional 2 Stage Heater ............................................................. 15
Condensate Drain Kit................................................................. 15
Subbase......................................................................................... 15
Lateral Duct Kit Assembly......................................................... 15
CLEARANCES AND PROJECTIONS................................ 16
INSTALLATION INSTRUCTIONS.................................... 17
WALL SLEEVE INSTALLATION INSTRUCTIONS.......... 18
Preparing the Wall Opening...................................................... 18
Framing ........................................................................................ 18
Wall Sleeve Installation .............................................................. 19
CONDENSATE DRAIN KIT............................................... 20
Condensate Drain Kit................................................................. 20
External Drain Installation........................................................ 20
Internal Drain Installation......................................................... 21
REAR GRILLE INSTALLATION INSTRUCTIONS.......... 22
Stamped Rear Grille.................................................................... 22
Architectural Rear Grille............................................................ 23
Subbase Assembly & Installation.............................................. 26
SUBBASE ASSEMBLY & INSTALLATION........................ 26
CHASSIS INSTALLATION ................................................. 28
FRONT COVER INSTALLATION & REMOVAL.............. 29
Front Cover Removal ................................................................. 29
FRESH AIR VENT............................................................... 30
Fresh Air Vent.............................................................................. 30
Lateral Duct Kit........................................................................... 30
MAINTENANCE ................................................................. 31
Air Intake Filters ......................................................................... 31
Routine Maintenance ................................................................. 31
INFORMATION FOR HEAT PUMP UNITS ..................... 32
Heat Pump Features.................................................................... 32
ELECTRICAL INSTALLATION ......................................... 33
Hardwire Kit ................................................................................ 33
LCDI Cords.................................................................................. 33
PTAC Wire Harness Kit ............................................................. 33
Heaterless Units........................................................................... 33
Voltage Measurements ............................................................... 33
WIRING DIAGRAM ........................................................... 34
SYSTEM CONTROLS AND MANAGEMENT................... 35
User Interfaces............................................................................. 35
Remote Control........................................................................... 35
Digital Control Panel.................................................................. 35
Wall ermostats ........................................................................ 35
Front Desk Control..................................................................... 35
System Management Soware................................................... 36
Fan Cycle Control ....................................................................... 36
Room Freeze Prevention............................................................ 36
High Temperature Compressor Protection ............................. 36
Low Temperature Compressor Protection .............................. 36
Diagnostic Soware.................................................................... 36
Custom Operation and Continual Room Temperature
Monitoring.................................................................................. 36
DIGITAL CONTROL PANEL ............................................. 37
Control panel............................................................................... 37
Power Control ............................................................................. 37
Display .......................................................................................... 37
Mode Control - Cool, Fan, and Heat........................................ 37
Fan Speed Control - Low, High, and Auto............................... 38
Temperature Controls ................................................................ 38
Operating Guidelines ................................................................. 38
REMOTE THERMOSTATS................................................. 39
Remote ermostat Control...................................................... 39
Wireless Wall ermostat.......................................................... 39
Energy Saving Options............................................................... 39
REMOTE THERMOSTAT INTERFACE ............................ 40
CONTROL BOARD............................................................. 41
TEMPERATURE LIMITING .............................................. 42
Set Temperature Limiting .......................................................... 42
ERROR CODES ................................................................... 43
Diagnostic & Error Codes ......................................................... 43
Packaged Terminal Cooling Unit with Heat Pump or
Electric Heating.......................................................................... 44
PERFORMANCE SPECIFICATIONS ................................ 44
WARRANTY........................................................................ 52
Islandaire reserves the right to make changes in design and construction at any time without notice.

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Our Company
Islandaire is the fastest growing specialty air conditioning and heating
manufacturer in the country. Founded in 1992 by Robert Hansen, it
has grown into a multi-million dollar company in just a few short years.
Islandaire builds a full complement of high quality thru-the-wall replacement
air conditioners and heat pumps, water source heat pumps, and gas units in
St. James, New York. Each model ts perfectly into the existing original wall
case assembly, thereby saving both time and money during installations.
Our Engineering, Production, Sales and Customer Service departments have
been fully integrated to provide the maximum degree of user satisfaction.
We at Islandaire feel that this team approach to manufacturing produces a
superior overall product and assures a larger degree of exibility in design and
production scheduling to meet tight prototyping or construction timetables.
The Perfect Fit
ru-wall air conditioners were developed in the late 1950’s. Over the next
forty years many companies engineered, manufactured and installed a variety
of dierent units throughout the United States and Canada. Today, a number
of these companies are no longer in business, or have discontinued their line
of thru-wall air conditioners and no longer carry replacement parts.
Islandaire oers replacement air conditioners and heat pumps that are inter-
changeable with units no longer available from the original manufacturer.
Our units are engineered to t perfectly within the existing wall case, thereby
reducing installation time and expense. ey are manufactured at our mod-
ern 75,000 square foot plant on Long Island in New York.
ank you for considering our products,
e Islandaire Team
Introduction

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Applications
e EZ Series 42 and DR units are designed and manu-
factured for new construction or the replacement of
packaged terminal air conditioning (PTAC) units in an
existing building. Our packaged terminal air condition-
ing (PTAC) units provide year-round comfort control for
hotels, motels, apartments, dormitories, shops, nurs-
ing homes, assisted living centers, satellite oces, room
additions and other applications that require economical
heating and cooling.
e product is designed for individually-zoned, comfort-
controlled, heating and cooling. e unit width is an
industry standard 42”. We oer our cooling chassis to
operate with cooling only or electric heat. e design
standards, heavy duty construction and the focus on
indoor noise reduction has created our unit as the pre-
mier unit of the future. Individually controlled PTAC
units are ideal for rooms that are not occupied during
vacancies, holidays, weekends or nights. Individual units
allow tenants to choose the degree of comfort and oper-
ating economy.
ermostat and fan controls are built into the digital
touch-pad, plus all units have the exibility to convert
to a wall thermostat control, or interface into energy
management systems. Whether you are designing a new
structure or replacing PTAC units in an existing build-
ing, Islandaire will meet your needs.
New Construction
e Islandaire EZ42 and EZDR Packaged Terminal Air
Conditioning (PTAC) unit is designed to meet the needs
of the architect, engineer, and contractor. For unit instal-
lation, Islandaire’s expert support network will assist in
all applicable aspects of the construction project, from
preparing a budget to start-up.
ADVANTAGES FOR NEW CONSTRUCTION
Design Flexibility For e Architect Engineer
• Super-quiet performance, indoors and out
• No bulky duct system
• No separate equipment room
• No water towers or additional cooling equipment
• Less sensitivity or building orientation
• Optional architectural grille to permit custom
exterior appearance
LOWER OPERATING COSTS & RELIABLE COMFORT FOR THE
OCCUPANT
Islandaire helps lower utility costs with energy ecient
units that exceed industry standards. Energy savings
are achieved in both heating and cooling environments
through ecient mechanical design and onboard elec-
tronic logic. Separate indoor and outdoor fans provide
lower operating costs. Energy management soware is
built into the unit’s standard digital controls.
ese units may also qualify for electrical power com-
pany rebates. (Consult your local utility provider for
rebate opportunities.)
Retrofit/Replacement
Islandaire PTAC units are engineered to t perfectly
within most existing wall sleeves, thereby reducing
installation time and expense. ere is no time wasted
on redesigning an existing wall opening or removing an
old wall sleeve. Just slide the old chassis out and replace
with a new one from Islandaire.
EZ Quick slide-out chassis eases installation into the wall
sleeve. Rapid servicing reduces downtime: complete
chassis can be replaced in minutes without disrupting
other occupants.

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Applications (cont.)
Application
Considerations
It is important for air conditioning systems to be prop-
erly sized for each application in order to achieve desired
temperature and humidity levels. It is strongly recom-
mended that a professional engineer match the PTAC
units with the building structure and climate.
e following application considerations are all impor-
tant in choosing the proper PTAC system for the build-
ing structure.
UNDERSIZING
If a PTAC unit is undersized (cooling capacity is less than
required capacity for an application), the unit will not be
able to cool the space down to the desired temperature
during very hot days.
OVERSIZING
If a PTAC unit is oversized (cooling capacity is greater
than required capacity for the specic application), the
unit will cool the space down to the desired temperature
too quickly creating a cool, yet excessively humid, space.
AIR INFILTRATION
Excessive air inltration can intensify problems associ-
ated with undersizing or oversizing a PTAC unit. is
can be the cause of insucient cooling, dehumidica-
tion, or heating. Sources of air inltration include vents,
gaps around windows and doors, and improperly sealed
oors, ceiling or wall joints.
Guaranteed Quality
Each Islandaire unit is designed to operate quietly and
eciently and is backed by the best warranty program
available. Standard warranty is one year parts and labor
including ve year compressor part only warranty or two
year parts only including ve year compressor part only
warranty.
Whether it is an exact replacement unit or a new con-
struction project, Islandaire is the smart choice for all
your air conditioning and heating needs.
Indoor Air Quality - DR.
PTAC (EZDR Series Units
Only)
In addition to an already quiet unit, we have
co-developed an indoor air quality option called
Dr.PTAC.
Dr.PTAC is currently designed as a two-stage system.
e primary stage conditions room air and tempers
the air to acceptable air quality levels. e secondary
stage brings in conditioned outside air at a rate of up
to 55 CFM, to compensate for toilet exhaust and room
occupancy, and continuously pressurizes the room. e
secondary stage is initiated by an outdoor humidistat that
allows the unit to condition the incoming fresh air about
50% RH. e system can be calibrated to run at higher
outdoor RH levels, but the recommended maximum set
point 50% outdoor RH. When outdoor RH levels are
above the set point, the secondary compressor is initiated
and conditions make up air below the set point.
e secondary fan continuously runs allowing fresh, con-
ditioned, make-up air at a rate of up to 55 CFM (leaving
coil CFM) to enter the room. e unit is manufactured
in accordance to ARI, UL, CSA standards for the primary
side and AHAM and UL standards for the secondary
side.

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Product Overview
Quiet Operation
e cross-ow tangential fan wheel design used in our
PTAC units provide whisper quiet operation while deliv-
ering maximum airow required for proper air circula-
tion. Separate indoor and outdoor fan motors further
reduce operating sound levels and costs.
e heavy gauge construction of the chassis and cabinet
minimizes vibration for quieter operation. Vibration iso-
lators on the rotary compressor keep it running smoothly
and quietly. e unit bulkhead is fully insulated to
decrease outdoor sound transmission. e compressor
is isolated to minimize vibration and sound transmission
for quiet operation.
Durable Construction
• Islandaire PTAC/PTHP units are built with
durable, quality components designed for continu-
ous operation in all environments.
• Our wall sleeves are constructed of thick 18-gauge
steel with a tough baked-on nish for maximum
durability.
• e outdoor fan motor is totally enclosed, prevent-
ing damage from moisture and debris introduced
by extreme weather conditions. Both indoor and
outdoor fan motors are permanently lubricated for
extended life.
• Electrical components are located on the indoor
side of the wall protecting them from driving rain
and humidity.
• e compressor is a reliable, high eciency design
rotary compressor. It is hermetically sealed and
designed for continuous operation.
• Repositionable discharge grille allows angle of air-
ow to be adjusted according to application. Made
from tough plastic material that won’t rust, resists
scratches and is easy to clean.
Corrosion Protection
All Islandaire PTAC units have corrosion protection that
can help extend the life of the unit. Below are just some
of the components that feature corrosion protections:
• Wall Sleeve – e entire wall sleeve is con-
structed of 18-gauge steel. Treated inside and
outside with a baked-on based powder coat paint
to protect it from the corrosive eects of salt spray.
• Base Pan – Base pan has a corrosion resistant
coating to protect it from the elements.
• Condenser Coil – Constructed using Blue
hydrophilic aluminum n coating.
• Condenser Fan Blade – Constructed of strong
engineered plastic that has excellent ame resis-
tance and dimensional stability over a wide range
of service temperatures.
• Compressor – Durable, powder-coated paint
nish.
• Outdoor Louver – Architectural style is made
of anodized aluminum for maximum corrosion
protection. Also available in stamped aluminum
that can be powder-coated painted in a wide choice
of colors.
Optional “Seacoast
Protection”
Application of air conditioning equipment in a corro-
sive environment such as salt water spray, chlorine and
acid vapor requires special consideration. Our Seacoast
Corrosion Protection treatments shield the unit from
corrosive environments and extends the life of the unit,
especially in coastal locations. Islandaire oers two Sea-
coast Protection upgrade options:
• IslandaireBasicSeacoastProtection
• IslandaireExtremeSeacoastProtection
Basic Seacoast Protection includes Cal-Shield protective
coating of both the Evaporator and Condenser coils.
Extreme Seacoast Protection includes Enercoat pro-
tection of the evaporator and condenser coils and all
outdoor steel components (e.g., compressor, condenser
motor, reversing valve and metering device), as well as all
outdoor hardware.
Contact your sales representative for additional Seacoast
Protection details and pricing information.

Manufacturer of Quality Air Conditioning and Heating Products • www.islandaire.com • [e-mail] • (800)-886-2759
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Product Overview (cont.)
Islandaire manufactures the EZ42/EZDR unit loaded with standard features that
other manufacturers oen consider optional.
AUTO
VENTURI SHROUD
SLINGER FAN BLADE
TANGENTIAL BLOWER WHEEL
DISCHARGE GRILLE
RETURN AIR
FILTERS
REMOVABLE FRONT PANEL
WALL SLEEVE
DIGITAL TOUCHPAD CONTROL /
DIAGNOSTIC CENTER
CHASSIS
COMPRESSOR
FRESH AIR INTAKE
SLOPED BASEPAN

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Slide Out Chassis
• Slide-out chassis makes installation simple
• All components are readily accessible to service personnel
• On-board diagnostic soware and display help diagnose potential
problems
• Designed to replace older units with minimal modication
• Isolated rotary compressor design for continuous ecient, reliable
and quiet operation
See page 28 for chassis installation instructions
Wall Sleeve
Part Number 2401135-00
• ick insulation on the top and sides to reduce noise and increase
eciency
• Heavy 18 gauge steel with powder paint coating for maximum scratch,
dent and corrosion resistance
See page 19 for wall sleeve installation instructions
Exterior Louver/Grilles
• Architectural extruded aluminum grille, Part Number 6070422
• Custom colors available (Ask for our color chart sheet)
• Stamped Grille, Part Number 6070264
See page 22 for exterior grille installation instructions
Removable Front Panel
Part Number 6130133
• Made from durable ABS plastic that won’t rust, resists scratches and is
easy to clean and maintain
• Quick removal ensures shorter installation time and faster
service calls
• Easy access to removable lters
See page 29 for front cover installation instructions
Chassis Features and Benefits

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Tangential Blower Wheel
• Creates extremely quiet indoor operating environment
• Generates a balanced and constant airow into the room
Slinger Fan
• Curved fan blades increase airow across the outside coil
• Creates a quiet operating environment outside of building
• Slinger ring eciently removes condensate and increases cooling
Venturi Shroud
• Works with the fan to maximize air ow and increase eciency
• Removes easily for quick access when cleaning the condenser coil
Return Air Filters
(2 per) Part Number 6080067
• Easily removable from the front of the unit for cleaning
• Filters the circulated air inside the room
• Keeps the system clean and working eciently
• Clean lters increase life of the system components
See page 31 for maintenance information
Fresh Air Vent
• Allows fresh air to be drawn into the room
when indoor fan is operating
• Manual control allows uninterrupted
operation
See page 30 for fresh air vent information
Chassis Features and Benefits (cont.)

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Ordering Data - EZ Series 42
Model Nomenclature
Please review the nomenclature/model number break-
down below for the EZ Series 42 options.
Units are available in four cooling BTUH sizes:
7,500; 9,500; 12,000; 15,000
Voltage options are: 115V, 208/230V, and 277V
Control choices include a unit-mounted digital control;
multiple wired wall-mounted heating/cooling thermo-
stats and a wireless wall thermostat, with occupancy
sensor control.
NOTE
Note: 277V units must have a permanent wiring connection. is
requirement can be met either by using a subbase for concealed cord
connection or by direct wiring using a hard-wire kit.
Replacement Guide
MANUFACTURER MODEL WALL OPENING DIMENSION DISCHARGE RETURN AIR HEAT TYPE
16 ¼” x 42 ¼” ANGLED FLAT BOTTOM FRONT ELECTRIC HYDRONIC
AC HP
AMANA PTC • • • • • • • •
CLIMATE
MASTER
PIP • • • • • • • •
McQUAY
PDE • • • • • • • •
PSE • • • • • • • •
MQE • • • • • • • •
GREE ETAC • • • • • • • •
TRANE PTE • • • • • • • •
LG LP • • • • • • • •
GE AZ • • • • • • • •
EZ - Cooling Chassis
07 - 7,500 BTU
09 - 9,500 BTU
12 - 12,000 BTU
15 - 15,000 BTU
1 - Standard Cooling
2 - Heat Pump
1 - 115v, 20 Amps
2 - 208/230v, 20 Amps
3 - 208/230v, 30 Amps
4 - 208/230v, Hard Wire
5 - 115v, 15 Amps
6 - 115v, Hard Wire
7 - 277v, 20 Amps
8 - 277v, Hard Wire
9 - 208/230v, 15 Amps
E - 277v, 15 Amps 1 - None
E - Wireless Thermostat (type must be speci-
ed when placing order)
F - Wall Thermostat Interface, Master
G - Wall Thermostat Interface, Slave
N - Wall Thermostat Interface, Std. Elect.
Cntrls
S - Std. Electronic Controls (Unit Mounted)
4 - Front Ret./Top Dis.
0 - Special
6 - Standard
A - None
C - Energy Mgt. N/O
D - Energy Mgt. N/C
A - Manual Fresh Air
B - Motorized Fresh Air
SYSTEM TYPE
MODEL TYPE
COMPONENT
COOLING CAPACITY
VOLTAGE / LINE CORD
ROOM CONTROLS
HYDRONIC OPTIONS
FUNCTIONAL OPTIONS
IDENTITY CODE
RETURN DISCHARGE OPTIONS
EZ 42 12 1 2 A 1 S 4 6 A A
3 - Dual Stage 3.4 kW Elec (2.5 kW / 0.9 kW)
4 - Dual Stage 5.0 kW Elec (3 kW / 2 kW)
7 - 1.7 kW Elec. Heat (115v Only)
A - None Cooling Only
B - 2.0 kW Elec. Heat (208v - 277v)
Y - 1.3 kW Elec. Heat (115v Only)
HEATING OPTIONS
POWER
MANAGEMENT OPTIONS
POWER
MANAGEMENT CODES
A - A
P - C
T - D
42 - ISLANDAIRE 42 X 16 PTAC