Islandaire EZ VP Series Installation and operation manual

EZ Series VP & EZ Series VR (DR. VTAC option)
Perfect t for Replacing Existing GE AZ Vertical,
Friedrich Vert-I-Pak and New Construction Projects
Engineering Manual
MANUFACTURER OF QUALITY AIR CONDITIONING AND HEATING PRODUCTS
6140278 Rev. W07/01/21

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Table of Contents
Islandaire reserves the right to make changes in design and construction at any time without notice.
INSTALLATION  EXTERIOR GRILLE........................ 22
Standard Exterior (Rear) Grille.....................................22
Architectural Exterior (Rear) Grille ............................. 23
Drain Connection(s) .....................................................26
INSTALLATION  CHASSIS.......................................... 27
Unit Chassis ................................................................... 27
INSTALLATION  ACTIVATION PLATE..................... 28
INSTALLATION  AIR DISCHARGE PLENUM/DUCT
WORK............................................................................ 29
Air Discharge Plenum ................................................... 29
Duct Work...................................................................... 29
INSTALLATION  POWER CORD, THERMOSTAT 30
Unit Power Connection................................................. 30
Voltage Measurements...................................................30
Remote Wall Mounted ermostat............................... 30
Wireless Wall Mounted ermostat.............................. 31
Remote ermostat Interface........................................ 31
INSTALLATION  INTERIOR ACCESS PANEL .......... 32
Interior Access Panel (with Grille)................................ 32
WIRING DIAGRAMS .................................................... 33
User Interfaces ............................................................... 35
Wall ermostats........................................................... 35
Front Desk Control........................................................ 35
Controls Logic ............................................................... 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
Operating Guidelines ....................................................37
Power Disconnect .......................................................... 37
MAIN CONTROL BOARD ............................................ 38
ROUTINE MAINTENANCE.......................................... 39
PERFORMANCE SPECIFICATIONS ........................... 40
Vertical Packaged Terminal Cooling Unit With
Heat Pump Or Electric Heating ................................... 40
TYPICAL WARRANTY ................................................. 43
NOTES............................................................................. 44
EZ REPLACEMENT GUIDE.......................................... 45
SAFETY PRECAUTIONS............................................... 3
INTRODUCTION .......................................................... 4
Our Company ................................................................4
e Perfect Fit................................................................ 4
APPLICATIONS ............................................................. 5
New Construction.......................................................... 5
Retrot/Replacement .................................................... 5
Undersizing.................................................................... 6
Oversizing...................................................................... 6
Air Inltration............................................................... 6
Guaranteed Quality ....................................................... 6
Indoor Air Quality - DR.VTAC..................................... 6
Durable Construction ................................................... 7
Corrosion Protection..................................................... 7
CHASSIS FEATURES AND BENEFITS ........................ 8
Easy Access Chassis –..................................................... 8
Eciency Benets –....................................................... 8
Wall Plenum Assembly –............................................... 8
Exterior Louver/Grilles – ..............................................8
Removable Access Panel – ............................................. 9
Slinger Fan – ..................................................................9
Venturi Shroud – ........................................................... 9
EZ SERIES VP DATA...................................................... 10
Model Nomenclature ..................................................... 10
Performance Data for EZ Series VP* ............................ 11
Heating options ............................................................. 11
Electrical ........................................................................ 11
EZ SERIES VR DATA...................................................... 12
Model Nomenclature ..................................................... 12
Performance Data for EZ Series VR* ............................ 13
Heating options ............................................................. 13
Electrical ........................................................................ 13
PRODUCT INFORMATION ......................................... 14
Heat Pump Features ...................................................... 15
DIMENSIONAL DRAWINGS........................................ 16
INSTALLATION  OVERVIEW..................................... 18
INSTALLATION  WALL PLENUM .............................. 19
Overview ........................................................................ 19
Wall Plenum...................................................................20
INSTALLATION  DRAIN PAN LEVELING ................ 21

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SAFETY INFORMATION
WARNING! THE INFORMATION IN THIS MANUAL MUST BE FOLLOWED.
IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE, OR MAIN-
TENANCE CAN VOID WARRANTY, CAUSE PROPERTY DAMAGE, PERSONAL
INJURY, OR LOSS OF LIFE. A QUALIFIED INSTALLER OR SERVICE AGENCY
MUST PERFORM INSTALLATION OR SERVICE. ALL LOCAL AND NATIONAL
CODES MUST BE ADHERED TO WHEN INSTALLING THIS PRODUCT!
SAFETY PRECAUTIONS
• EZVP and EZVR Series vertical terminal air conditioning (VTAC) units must be properly installed
in accordance with the installation instructions before it is used. Refer to the installation instructions
contained within this manual.
• Disconnect the VTAC units at the fuse box or circuit breaker panel before making any repairs. It is
strongly recommended that any servicing be performed by a qualied individual.
• All air conditioners contain refrigerants, which under federal law must be removed prior to product
disposal. If you are disposing of an old product containing refrigerants, check with the company
handling disposal about proper disposal procedures.
• ese R410A air conditioning units require contractors and technicians to use tools, equipment and
safety standards approved for use with this refrigerant. DO NOT use equipment certied for R22
refrigerant only.

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Introduction
Our Company
Islandaire is the fastest growing specialty air conditioning and heat-
ing 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, single package vertical
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 dur-
ing installations.
Our Engineering, Production, Sales and Customer Service depart-
ments 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
interchangeable with units no longer available from the original manu-
facturer. Our units are engineered to t perfectly within the existing
wall case, thereby reducing installation time and expense. ey are
manufactured at our modern 75,000 square foot plant on Long Island
in New York.
ank you for considering our products,
e Islandaire Team

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Applications
e EZVP and EZVR Series vertical terminal air con-
ditioning (VTAC) units are designed and manufactured
for new construction or the replacement of units in an
existing building. Our VTAC units provide year-round
comfort control for hotels, motels, apartments, dormi-
tories, shops, nursing homes, assisted living centers,
satellite oces, room additions and other applications
that require economical heating and cooling. is unit is
designed for single-room use only.
e product is designed for individually-zoned, comfort-
controlled heating and cooling. 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 established our product
as the premier unit of the future. Individually controlled
VTAC units are ideal for rooms that are not occupied,
such as during vacancies, holidays, weekends or nights.
Individual units permit tenants to choose their own
degree of comfort and operating economy.
Temperature and fan settings are controlled via wall
thermostat. In addition, all units have the exibility
of working with controls that integrate with an energy
management system. Whether you are designing a new
structure or replacing VTAC units in an existing build-
ing, Islandaire will meet your needs.
New Construction
e Islandaire VTAC 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
• Lower Operating Costs and Reliable Comfort for
the Occupant
• Design Flexibility For e Architect/Engineer
• Super-quiet performance, indoors and out
• No bulky duct system needed
• No separate equipment room
• No water towers or additional cooling equipment
• Optional architectural grille to permit custom
exterior appearance
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 capability 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 VTAC units are engineered to t perfectly
within existing GE wall cases, thereby reducing instal-
lation time and expense. ere is no time wasted on
redesigning an existing wall opening or removing an old
wall case. Just slide the old chassis out and replace with a
new one from Islandaire.
Our EZ slide-out chassis eases installation and enables
rapid servicing, thereby reducing downtime; the
complete chassis can be replaced in minutes without
disrupting other occupants.

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Applications (Cont.)
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 for 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.VTAC
In addition to an already quiet unit, we have developed
an indoor air quality option called the DR.VTAC.
DR.VTAC is a two-stage system. e primary stage
conditions room air and tempers the air to acceptable
air quality levels. e secondary stage brings in 100%
continuously conditioned make up 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
to about 55% RH. e system can be calibrated to run at
higher outdoor RH levels, but the recommended maxi-
mum set point is 55% outdoor RH. When outdoor RH
levels are above the set point, the secondary compressor
is initiated and conditions make up air.
e secondary fan continuously runs allowing fresh,
conditioned, make-up air at a rate of up to 55 CFM (leav-
ing coil CFM) to enter the room. e unit is manufac-
tured in accordance to AHRI, UL, CSA standards for
the primary side and AHAM and UL standards for the
secondary side.
Application Consider-
ations
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 VTAC
units with the building structure and regional climate.
e following application considerations are all impor-
tant in choosing the proper VTAC system for the build-
ing structure.
UNDERSIZING
If a VTAC unit is undersized (cooling capacity is less
than required capacity for the specic application), the
unit will not be able to cool the space down to the desired
temperature during very hot days, causing excessive
power consumption.
OVERSIZING
If a VTAC 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 VTAC 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.

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Applications (Cont.)
Quiet Operation
e VTAC unit provides whisper quiet operation while
delivering maximum airow required for proper air
circulation. 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.
Durable Construction
• Islandaire VTAC units are built with durable
quality components designed for continuous
operation in all environments.
• e outdoor fan motor is totally enclosed,
preventing 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
built for continuous operation.
Corrosion
Protection
All Islandaire VTAC units have special corrosion
protection that can help dramatically extend the life
of the unit. Listed below are just some of the compo-
nents that feature corrosion protection:
• Base Pan - e base pan of the unit is
constructed of 18-gauge galvanized steel with
powder coat paint nish to protect it from the
elements.
• Condenser Fan Blade - Constructed of strong
engineered plastic that has excellent ame-
resistance and dimensional stability over a
wide range of service temperatures.
• Condenser Fan Motor - Specially coated by
the manufacturer to resist corrosion (optional).
• Compressor - Protectively-coated exterior to
enhance equipment life and performance.
• Outdoor Louver - Made of aluminum,
etched and anodized for maximum corrosion
protection. Available in various architectural
styles. Can be painted in a wide choice of
colors.

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Chassis Features and Benefits
Easy Access Chassis –
• “Case-less” design simplies installation/removal signicantly
reducing servicing time; permits easy access from front, le, and
right sides
• Quick release draw latch fasteners enable easy connection of unit
Chassis to Wall Plenum Assembly
• Designed to replace older units with minimal modication
• All components are readily accessible to service personnel
See page 27 for chassis installation instructions
Efficiency Benefits –
• Remote Temperature Sensing (RTS) interface ready
• Isolated rotary compressor design for continuous ecient, reliable
and quiet operation
• High-eciency DC Evaporator and Condenser motors for
maximum energy eciency and quiet operation
• On-board diagnostic soware helps quickly diagnose potential
problems
AUTO
POWER MODE
FAN
SPEED
LOW HIGH FAN HEAT COOL
WARM
COLD
Wall Plenum Assembly –
• Heavy 18 gauge steel with powder paint coating for maximum
scratch, dent and corrosion resistance
• Integrated adjustable support bracket eliminates need for a separate-
ly provided base platform thereby reducing cost of installation
• Optional wall depths of 6”, 8”, 10”, 12”, and 15” available
• Contact your sales representative for custom application/depths
See page 20 for wall plenum installation instructions
Exterior Louver/Grilles –
• Standard (stamped) or Architectural extruded aluminum grille
• Custom colors available (Ask for our color chart sheet)
• Recessed available
See page 22 for exterior grille installation instructions

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Removable Access Panel –
• Made from durable, powder-coated metal that won’t rust, resists
scratches and is easy to clean
• Quick removal ensures shorter installation time and faster service
calls
• umb screw design eliminates need for tools to remove/install
panel
• Easy access to removable lters
• Optional Sound-Reduction Grille for quieter operation
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
• Rust/Corrosion resistant nish
Chassis Features and Benefits (Cont.)

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EZ Series VP Data
Model Nomenclature
Please review the nomenclature/model number breakdown
below for the EZ Series VP options.
Voltage options are: 208/230 Vac or 277 Vac
Control choices include multiple-wired, wall-
mounted heating/cooling thermostats and a wireless
wall thermostat, with occupancy sensor control.
FEATURES: ACCESSORIES:
•Superior temperature control
•Reduced microbial growth
•Dehumidication of room air
•Compressor freeze protection
•Front desk control capable
•Motorized fresh air damper
(optional)
•On-board diagnostics
•Random Auto Re-start
•Compressor time delay
•Room side freeze protection
•Power service switch
•High pressure cut-out
•Architectural Louver
•Access Panel (interior)
•Return Air Grille
•Wired remote thermostat
•Wireless remote thermostat
•Energy Management ermostat
•I.R. motion sensor
•Door switch
•Air Discharge Plenum Kit
•Wall Plenum/Drain Pan Kit
MODEL TYPE
VP - Islandaire Vertical Unit
EZ VP 12 A 2 3 1 N 4 7 A B
A - None
C - Energy Mgt. N/O
D - Energy Mgt. N/C
POWER
MANAGEMENT OPTIONS
POWER
MANAGEMENT CODES
EZ - Cooling Chassis
COMPONENT
COOLING CAPACITY
A - Std. Chassis R410A
B - Heat Pump R410A
SYSTEM TYPE
2 - 230v, 20 Amps
3 - 230v, 30 Amps
4 - 230v, Hard Wire
8 - 277v, Hard Wire
9 - 230v, 15 Amps
VOLTAGE / LINE CORD
HEATING OPTIONS
1 - None
HYDRONIC OPTIONS ROOM CONTROLS
FUNCTIONAL OPTIONS
A - None
B - Motorized Damper
IDENTITY CODE
4 - Front Ret./Top Dis.
RETURN DISCHARGE OPTIONS
E - Wireless Thermostat (type must be
specied when placing order)
N - Wall Thermostat Interface, Std.
Elect. Cntrls
3 - Dual Stage 3.4 kW Electric
4 - Dual Stage 5.0 kW Electric
A - None Cooling Only
B - 2.5 kW Elec. Heat (208v - 277v)
C - 3.4 kW Elec. Heat (208v - 277v)
L - 7.2 kW Elec. Heat (208v - 277v)
M - 10.0 kW Elec. Heat (208v - 277v)
0 - Special
7 - Standard
A - A
P - C
T - D
Units are available in ve cooling BTU/h capacities:
9,500; 12,000; 15,000; 18,000, 24,000
09 - 9,500 BTU
12 - 12,000 BTU
15 - 15,000 BTU
18 - 18,000 BTU
24 - 24,000 BTU

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EZ Series VP Data (Cont.)
Performance Data for EZ Series VP*
Heating capacities specied in accordance with ANSI/AHRI standard 390 at conditions of 47 °F DB/43 °F WB outdoor and 70 °F DB/60 °F WB indoor. Wattage, amperage, COP, EER listings include compressor,
evaporator motor and condenser fan motor. Cooling capacities specied in accordance with ANSI/AHRI standard 390 at conditions of 95 °F DB/75 °F WB outdoor and 80 °F/67 °F WB indoor.
*Performance Testing is performed with Drain Plug installed (provided in Unit Accessories Bag).
Heating options
(1) Voltage is 60Hz, Single Phase, Alternating Current and R.M.S.
(2) Amp values are for heating element only.
electrical EZVP
LINE VOLTAGE 208/230 208/230 208/230 277 277
MAXIMUM AMPERAGE 12 16 24 16 24
WALL SOCKET CONFIGURATION
RECEPTACLE NUMBER NEMA 6-15R NEMA 6-20R NEMA 6-30R NEMA 7-20R NEMA 7-30R
ELECTRICAL HEAT OPTIONS 2.5 3.6 4.2 - 5.0 2.5 - 4.2 5.0
* All data is subject to change
EZ09 EZ12 EZ15 EZ18 EZ24
VOLTS 230 208 277 230 208 277 230 208 277 230 208 277 230 208
BTUH COOL 9,300 9,100 9,100 11,500 11,500 11,300 16,600 16,600 16,600 18,400 18,200 18,200 23,000 22,800
AMPS COOL 3.40 3.70 2.90 4.70 5.20 3.90 6.90 7.60 5.45 7.28 7.96 5.97 9.09 9.98
WATTS COOL 770 750 770 990 990 1,025 1,510 1,510 1,510 1,675 1,655 1,655 2,090 2,075
EER 12.1 12.1 11.8 11.6 11.6 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0
CFM HIGH (SP 0.1”) 353 353 353 430 430 430 436 436 436 565 565 565 700 700
CFM LOW (SP 0.1”) 259 259 259 347 347 347 353 353 353 525 525 525 610 610
BTUH HEATING 8,500 8,300 8,500 10,500 10,300 10,500 15,700 15,500 15,500 15,500 15,500 15,500 20,000 20,000
AMPS HEATING 3.10 3.30 2.70 4.10 4.40 3.30 6.40 7.00 4.96 5.98 6.61 4.96 7.72 8.53
WATTS HEATING 710 685 710 880 860 880 1,395 1,375 1,375 1,375 1,375 1,375 1,775 1,775
C.O.P. 3.5 3.5 3.51 3.5 3.5 3.5 3.3 3.3 3.3 3.33.3 3.3 3.3 3.3
Heating Option Voltage (I) Wattage BTU/h Amps (2)
3
208 2,780 9,500 13.37
230 3,400 11,600 14.78
277 3,600 12,300 13.00
4
208 4,090 14,000 19.66
230 5,000 17,100 21.74
277 5,000 17,100 18.05
B
208 2,045 7,000 9.83
230 2,500 8,500 10.87
277 2,500 8,500 9.03
C
208 2,945 10,100 14.16
230 3,600 12,300 15.65
277 3,600 12,300 13.00
L
208 5,890 20,100 28.31
230 7,200 24,600 31.30
277 7,200 24,600 25.99
M
208 8,180 27,900 39.32
230 10,000 34,100 43.48
277 10,000 34,100 36.10

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Model Nomenclature
Please review the nomenclature/model number break-
down below for the EZ Series VR options.
Voltage options are: 208/230 Vac or 277 Vac
EZ Series VR Data
Control choices include multiple-wired, wall
mounted heating/cooling thermostats and a wireless
wall thermostat, with occupancy sensor control.
FEATURES: ACCESSORIES: LEED* POINTS ACHIEVED:
•Up to 55 CFM Continuous
Conditioned make up air
•Motion sensor/door switch capable
•Superior temperature control
•Dehumidication of room air
•Compressor freeze protection
•Front desk control capable
•On-board diagnostics
•Random Auto Re-start
•Compressor time delay
•Room side freeze protection
•Power service switch
•High pressure cut-out
•Wall Plenum, 18 gauge
•Architectural Louver
•Access Panel (interior)
•Return Air Grille
•Wired remote thermostat
•Wireless remote thermostat
•Energy Management ermostat
•I.R. motion sensor
•Door switch
•Air Discharge Plenum Kit
•Plenum Adapter/Drain Pan Kit
OPTIONS:
•Electric heat add-on for the
DR.VTAC make up air system for
cold climates (40° and below)
1. Energy Ecient Design and compliance with ASHRAE
62.1 and ASHRAE 90.1
2. Indoor Environmental Quality with improved indoor air
quality (IAQ) through make up air
3. Innovation in design through the use of a “Make Up Air
VTAC”
4. Regional Design through the use of DR. VTAC in high-
humidity climates
5. Recycling/reusing DR.VTAC in secondary market where
the “rst costs” are prohibitive to owners
* LEADERSHIP IN ENERGY AND ENVIRONMENTAL
DESIGN (LEED)
MODEL TYPE
VR - DR. VTAC
EZ VR 12 A 2 3 1 N 4 7 A B
EZ - Cooling Chassis
COMPONENT
COOLING CAPACITY
A - Std. Chassis R410A
B - Heat Pump R410A
SYSTEM TYPE
VOLTAGE / LINE CORD
HEATING OPTIONS
1 - None
HYDRONIC OPTIONS ROOM CONTROLS
IDENTITY CODE
4 - Front Ret./Top Dis.
RETURN DISCHARGE OPTIONS
A - None
C - Energy Mgt. N/O
D - Energy Mgt. N/C
POWER
MANAGEMENT OPTIONS
POWER
MANAGEMENT CODES
FUNCTIONAL OPTIONS
A - None
B - 250W Dehum-heater
C - 400W Dehum-heater
A - A
P - C
T - D
0 - Special
7 - Standard
E - Wireless Thermostat (type must be
specied when placing order)
N - Wall Thermostat Interface, Std.
Elect. Cntrls
2 - 230v, 20 Amps
3 - 230v, 30 Amps
4 - 230v, Hard Wire
8 - 277v, Hard Wire
9 - 230v, 15 Amps
Units are available in ve cooling BTU/h capacities:
9,500; 12,000; 15,000; 18,000, 24,000
09 - 9,500 BTU
12 - 12,000 BTU
15 - 15,000 BTU
18 - 18,000 BTU
24 - 24,000 BTU
3 - Dual Stage 3.4 kW Electric
4 - Dual Stage 5.0 kW Electric
A - None Cooling Only
B - 2.5 kW Elec. Heat (208v - 277v)
C - 3.4 kW Elec. Heat (208v - 277v)
L - 7.2 kW Elec. Heat (208v - 277v)
M - 10.0 kW Elec. Heat (208v - 277v)

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EZ Series VR Data (Cont.)
Performance Data for EZ Series VR*
Heating capacities specied in accordance with ANSI/AHRI standard 390 at conditions of 47 °F DB/43 °F WB outdoor and 70 °F DB/60 °F WB indoor. Wattage, Amperage, COP, EER listings include compressor,
evaporator motor and condenser fan motor. Cooling capacities specied in accordance with ANSI/AHRI standard 390 at conditions of 95 °F DB/75 °F WB outdoor and 80 °F DB/67 °F WB indoor.
*Performance Testing is performed with Drain Plug installed (provided in Unit Accessories Bag).
Heating options
(1) Voltage is 60Hz, Single Phase, Alternating Current and R.M.S.
(2) Amp values are for heating element only.
electrical EZVR
LINE VOLTAGE 208/230 208/230 208/230 277 277
MAXIMUM AMPERAGE 12 16 24 16 24
WALL SOCKET CONFIGURATION
RECEPTACLE NUMBER NEMA 6-15R NEMA 6-20R NEMA 6-30R NEMA 7-20R NEMA 7-30R
ELECTRICAL HEAT OPTIONS 2.5 3.6 4.2 - 5.0 2.5 - 4.2 5.0
EZ09 EZ12 EZ15 EZ18 EZ24
VOLTS 230 208 277 230 208 277 230 208 277 230 208 277 230 208
BTUH COOL 9,300 9,100 9,100 11,500 11,500 11,300 16,600 16,600 16,600 18,400 18,200 18,200 23,000 22,800
AMPS COOL 3.67 3.97 2.90 4.54 5.02 3.90 6.57 7.26 5.45 7.28 7.96 5.97 9.09 9.98
WATTS COOL 845 825 825 1,045 1,045 1,025 1,510 1,510 1,510 1,675 1,655 1,655 2,090 2,075
EER 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0
CFM HIGH (SP 0.1”) 353 353 353 430 430 430 436 436 436 565 565 565 700 700
CFM LOW (SP 0.1”) 259 259 259 347 347 347 353 353 353 525 525 525 610 610
BTUH HEATING 8,500 8,300 8,500 10,500 10,300 10,500 15,700 15,500 15,500 15,500 15,500 15,500 20,000 20,000
AMPS HEATING 3.28 3.29 2.70 4.04 4.40 3.30 6.07 6.61 4.96 5.98 6.61 4.96 7.72 8.53
WATTS HEATING 755 685 755 930 915 930 1,395 1,375 1,375 1,375 1,375 1,375 1,775 1,775
C.O.P. 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.33.3 3.3 3.3 3.3
Heating Option Voltage (I) Wattage BTU/h Amps (2)
3
208 2,780 9,500 13.37
230 3,400 11,600 14.78
277 3,600 12,300 13.00
4
208 4,090 14,000 19.66
230 5,000 17,100 21.74
277 5,000 17,100 18.05
B
208 2,045 7,000 9.83
230 2,500 8,500 10.87
277 2,500 8,500 9.03
C
208 2,945 10,100 14.16
230 3,600 12,300 15.65
277 3,600 12,300 13.00
L
208 5,890 20,100 28.31
230 7,200 24,600 31.30
277 7,200 24,600 25.99
M
208 8,180 27,900 39.32
230 10,000 34,100 43.48
277 10,000 34,100 36.10
DR.VTAC SPECIFICATIONS
COMPRESSOR (AMPS) 1.02
COMPRESSOR (WATTS) 225
FAN (AMPS) 0.11
DEHUMIDIFICATION @60%RH
(LITERS/DAY) 7.9
DEHUMIDIFICATION @82%RH
(LITERS/DAY) 17.05
HEATER (WATTS) 250/400
HEATER (AMPS) 1.1/1.7
CONTROL TYPE Automatic
DEHUMIDIFIER CAPABILITIES
Outdoor
% RH
Outdoor
Temp
(°F)
H2O
Removal
(L/Day)
60 80 7.9
60 90 7.8
62 84 9.6
70 81 11.18
85 90 14.4
82 82 17.05

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Product Information
e DR. VTAC is an add on component to our standard VTAC unit that provides continuous conditioned make up
air into a space through the VTAC unit. e DR. VTAC provides up to 55 CFM of outdoor air 24/7 by forced fan and
cycling dehumidier compressor based on outdoor relative humidity levels.
DR. VTAC was created to solve issues with dehumidication in rooms and to introduce make up air due to deciencies
of oxygen levels. DR. VTAC is not only a VTAC, it is also a Conditioned Make Up Air unit. New ASHRAE studies show
that many illnesses in hotel rooms can be attributed to an oxygen-decient atmosphere. DR. VTAC solves this issue by
introducing conditioned make up air that satises both humidity level introduction and supplied oxygen.
DR. VTAC is a two-stage system. e primary unit is responsible for control of Sensible Heat that is introduced into
the room via make up air temperature and thermal load of the occupants. e secondary unit is primarily a dehumidi-
cation unit that provides up to 55 CFM of continuous conditioned make up air into the room. e correction of the
Sensible Temperature comes from the main VTAC system, which provides additional dehumidication with temperature
correction. Overall unit eciency, as compared with standard VTAC’s, is approximately 3% improvement. e compres-
sor/dehumidication process is controlled by a humidistat (factory set at 50% RH) that monitors the outdoor relative
humidity level and is adjustable by a qualied service person. Below 50% RH, compressor operation and dehumidica-
tion is stopped. However, fan operation continues to provide up to 55 CFM of outdoor air into the room.
e dehumidication system has a temperature switch that monitors both the refrigeration and the outdoor air tempera-
tures. If the outdoor air falls below 38 °F, the compressor is disabled with fan operation continuing to provide outdoor air
into the space. All dehumidier controls and safeties are automatically reset. An optional air tempering heater is avail-
able for the make up air system for applications where outdoor temperature is 40° or lower. Condensate from the dehu-
midier drains into the VTAC drain pan, where it is slung onto the condenser coil for re-evaporation outside when the
A/C runs. Excess condensate is collected in the drain pan, which can then either drain to the outside through the louver
OR be piped to a eld-supplied drainage system.
ADVANTAGES AND PROBLEM SOLVING BENEFITS OF THE DR.VTAC SYSTEM:
1. 100% Continuously Conditioned Make up air
2. Reduced Microbial Growth
3. Mildew control
4. Odor reduction
5. Solves air quality issues
6. Lower installation/renovation costs than typical DOAS*
7. Decrease inconvenience to customer due to construction/installation of a DOAS* system
8. Precise humidity control in a room as compared to a simple VTAC vent or power vent system
9. Allows conditioned make up air to travel entirely across sleeping and living areas of a room, exiting through an
exhaust.
*DOAS = Dedicated Outdoor Air System

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Reversing Valve:
e reversing valve controls the direction of refrigerant
ow for both heating and cooling functions and remains
energized as long as the controls are in the heat position.
When the cooling controls are activated, the valve auto-
matically reverses to the cooling position.
NOTE: Be sure to connect reversing valve wiring to the
B (blue wire) connection of the thermostat for heat pump
applications.
Heat Pump Features
Heat pump models oer substantial savings over models
with conventional electric resistance heaters.
When the outdoor coil temperature is above 27 °F
(approximately 35 °F outdoor-air temperature), the heat
pump draws heat from outdoor air and uses it to heat
indoor air. Since the heat supplied to the room is the
result of reversing the refrigeration cycle, the heat pump
uses less power than a conventional heating system,
therefore reducing energy costs.
Outdoor ermostat:
During the heating cycle, the outdoor thermostat senses
outdoor coil temperature. If the outdoor coil tempera-
ture falls below 20 °F (approximately 35 °F outdoor-air
temperature), the unit automatically switches to a backup
electric heater. e compressor stops and a blower circu-
lates warm air produced by the heater.
e thermostat automatically switches the unit back to
heat pump operation when the outdoor coil tempera-
ture rises above 40 °F, which is enough to provide heat
to meet demand. e entire operation is completely
automatic.
Product Information (Cont.)

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Dimensional Drawings
Units must be installed in accordance with all applicable codes. Ensure adequate clearance is provided for proper opera-
tion and additional space is provided for the service technician to work on the unit. A minimum clearance of 18 inches
in front of the air return is required. Ensure that drapes, beds, bedspreads, furniture, etc., DO NOT block either the
return or discharge air openings.
Airow should be balanced based on many factors, such as available ESP, room CFM, and duct work. Consult an HVAC
engineer for proper applications. Higher CFMs tend to increase sensible capacity, enhance room circulation and increase
duct noise, while lower CFMs tend to increase latent capacity and reduce noise.
Install the unit in the utility closet large enough to provide the following clearances between it and the interior surface of
the walls/door/panel:
• If VTAC unit is to be installed through the front of closet: 4” minimum clearance from the front of the platform to
inside of the closet door, 3” minimum clearance from each side of the unit.
• If VTAC unit is to be installed through the side of closet: 5” minimum (7” recommended) clearance from the front
of the unit, 3” minimum clearance from each side.
Outdoor Clearances
e following minimum outside clearance from rear grille must be maintained:
• Rear of unit to nearest obstruction - 36”
• Side of unit to nearest obstruction - 0”
Bottom of unit to obstruction and/or ground: is requirement is determined by local climate and environmental condi-
tions. e unit must be above ground and high enough o of the ground to prevent snow, water, leaves or any other
obstruction from blocking rear of unit.
DIMENSIONS TABLE
DIM. FRONT INSTALL. SIDE INSTALL.
A
C
B
D (DOOR)
D (STD. ACCESS PANEL)
SEE NOTES
3” MIN.
4” MIN.
33”
30”
SEE NOTES
-
5” MIN.
33”
30”
Important Notes
‘A’dimension determined by wall thickness and plenum
size selected
‘B’ dimension minimum 4” min. for front installation,
5” min. (7“ min. recommended) side installation
‘C’ dimensions minimum 4” for front installation
‘D’ dimension minimum for 28” door - 33”
‘D’ dimension minimum for Islandaire Access Panel - 30”
NOTE: When determining the closet depth, consideration
must be given to the fact that the plenum will protrude into
the closet because the plenum will be thicker than the
exterior wall.
WALL PLENUM
2.25”
23.0”
DEPTH
1.0”
“A”
23.0”
WIDTH
“B”
“C”
“C”
Figure 1 Dimensional Drawings (Unit Top Down View)

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Dimensional Drawings (Cont.)
29 1/4”
23”
9k thru 15k Unit Dimensions:
24 1/4”
32”
24 1/4”
22 3/4”
2”
VARIOUS
DEPTHS
AVAILABLE
Figure 1A Dimensional Drawings
22 15/16”
22 13/16”
48”
21 1/8”
18k and 24k Unit Dimensions:

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Installation - Overview
UNIT INSTALLED THROUGH FRONT OF
CLOSET (RECOMMENDED)UNIT INSTALLED THROUGH SIDE OF CLOSET
Top Vie w Top Vie w
ARCHITECTURAL LOUVER ARCHITECTURAL LOUVER
RTS
CONNECTIO N
~2 1/4”
3” MIN.
DOOR/ACCESS
PANEL
~1”
3” MIN.
10”
DUCT
ELECTRICAL
CONNECTION
19-7/8”
4” MIN.
UNIT FRONT
~2 1/4”
3” MIN.
3” MIN.
7” RECOMMENDED,
5” MIN.
DOOR/ACCESS
PANEL
ELECTRICAL
CONNECTION
RTS
CONNECTIO N
~1”
19-7/8”
PLENUM CUTOUT
32-1/4”H x 20-1/8”W
OUTSIDE WALL
WALL PLENUM - EXTEND
1/4” FOR CAULKING
EXTERIOR/OUTSIDE
EXTERNAL
DRAIN LINE
Side View
INSIDE WALL
8” MIN. FOR
DRAIN ACCESS
•4” MI N. FR OM FRONT OF CHASSIS - UNIT
INSTAL LED THR OUGH FR O NT OF CLOSET
•
•3” MI N. FR OM TWO SIDES OF CLOSET
2-INCH (MIN.)
10-INCH (MAX.)
FOR OPTIMAL SERVICEABILITY AND UNIT ACCESSIBILITY,
THE FOLLOWING MINIMUM ACCESS OPENING SIZE IS
REQUIRED:
OPENING WIDTH = 28” MIN.
OPENING HEIGHT= 48” MIN.
Refer to “Interior Return Air Grille” installation instructions for standard factory access door
cut out (rough opening) dimensions.
10”
DUCT
UNIT FRONT
5” MI N. (7” RECOMMENDED) FR OM
FR ONT OF CHASSIS - UNIT INSTAL LED
THROUGH SIDE OF CLOSET
FILTER
BRACKET
WALL PLENUM
BOTTOM OF CHASSIS
APPROX. 2.5” ABOVE
BOTTOM OF PLENUM
OUTSIDE WALL FIELD SUPPLIED
OUTER FLASHING
Figure 2 Dimensional Drawings (Chassis)

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Installation - Wall Plenum
Overview
CAUTION! To prevent damage, this unit should NOT be operated to provide supplementary heat-
ing and cooling during the construction period. e unit is designed for operation in a normal indoor envi-
ronment. Operating this unit in an unenclosed space or exposure to construction environment may result in
permanent equipment damage.
e following is the sequence of steps for installing the Islandaire VTAC unit:
1 Install Wall Plenum Assembly 6 Attach Discharge Plenum to Top of Chassis
2 Level Drain Pan - Cut legs to proper height
and level Drain Pan using Leveling Screws
7Install exible duct to Discharge Plenum
3Install Exterior Louver 8 Make unit power connections
4 Install Condensate Piping 9 Make thermostat connections
5 Place Chassis on Drain Pan, slide in and
secure to Wall Plenum (using latches)
10 Install Interior Access Panel/Grille
EXTERIOR
LOUVER
WALL
PLENUM
ASSEMBLY
CHASSIS
DRAW
LATCH (3X) DETAIL A
SEE
DETAIL A

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Installation - Wall Plenum (Cont.)
Wall Plenum
e Wall Plenum Assembly incorporates a Wall Plenum, Plenum-to-Chassis Adapter, and Drain Pan all in one
easy-to-install assembly. e Drain Pan is designed to pivot down 90° from the Plenum and includes a height-
adjustable Drain Pan Support Bracket with leveling screws at the front side. Draw Latches provided on the Wall
Plenum Adapter and Drain Pan enable quick and secure connection to the Chassis. is design eliminates the
need for a separately supplied Base Platform, greatly reducing installation time, labor and cost.
Since the VTAC unit itself does not install in the wall opening, the use of a wall plenum is necessary to contain and
separate the outdoor air paths to prevent the discharge air from being drawn back into the unit. e plenum must
be able to hold water in the bottom without leaking into the wall cavity. e installation of ashing, with a 45°
drip-lip, is recommended below the plenum.
e plenum is not load bearing, so a proper header needs to be installed above the plenum just as over any win-
dow opening in the wall. If the building construction is brick, concrete block, or other non self-supporting mate-
rial, a lintel must be installed over the plenum opening.
e plenum is to be installed square and level in the opening and secured to the wall construction with screws or
nails in the sides located a minimum of 2” from the bottom of the plenum. No nails or screws may be used in the
bottom or top of the plenum to ensure against water entering the wall cavity. e plenum must be caulked (on all
four sides) along the outdoor wall face and along the interior wall to prevent air inltration and water intrusion.
e wall opening location for the plenum must extend 1” below the top of the Installation Platform. Since the
platform must be a minimum of 8” o the oor, the cutout for the plenum must be a minimum of 7” plus the
thickness of the platform base (Drain Pan), o the interior nished oor.
Islandaire oers ve plenum depths (see Figure 3); the choice of the correct plenum size is determined by the
thickness of the building’s exterior wall. Each plenum is 19 7/8” wide by 32” high and requires a 20 1/8” wide by
32 1/4” high cutout in the wall.
Prepare the closet duct work for later connection to the chassis. e plenum duct should be insulated to prevent
condensation and to reduce air noise.
ARCHITECTURAL
LOUVER
EXTERIOR/OUTSIDE WALL
WALL PLENUM ASSEMBLY*
P/N 4091635: 6”D x 19 7/8”W x 32”H
P/N 4091651: 8”D x 19 7/8”W x 32”H
P/N 4091652: 10”D x 19 7/8”W x 32”H
P/N 4091653: 12”D x 19 7/8”W x 32”H
P/N 4091654: 15”D x 19 7/8”W x 32”H
WALL PLENUM
PLENUM ADAPTER
DRAIN PAN
ADJUSTABLE SUPPORT
BRACKET
*Note: For use of new the Wall Plenum, Drain Pan
& Platform Assemlby with an existing (old
style) Wall Plenum, use P/N 4091649 Assembly.
Figure 3 Wall Plenum Assembly