Islandaire EZ Series Installation and operation manual

EZ Series VP & EZ Series VR (DR. VTAC option)
Perfect t for Replacing Existing GE 8500 & 7500 Series
Friedrich Vertical and for New Construction Projects
Engineering Manual
MANUFACTURER OF QUALITY AIR CONDITIONING AND HEATING PRODUCTS
6140278 Rev. J 03/19/18

Manufacturer of Quality Air Conditioning and Heating Products • www.islandaire.com • [email protected] • (800)-886-2759
2
Table of Contents
Islandaire reserves the right to make changes in design and construction at any time without notice.
INSTALLATION INSTRUCTIONS  CASE
& CHASSIS .................................................................... 21
Unit including case and chassis..................................... 21
INSTALLATION INSTRUCTIONS  DRAINS.............22
Drain Connection(s) ..................................................... 22
INSTALLATION INSTRUCTIONS POWER
CORD, DUCT..............................................................23
Unit Power Connection.................................................23
Voltage Measurements................................................... 23
Connect the Top Duct ...................................................23
INSTALLATION INSTRUCTIONS  THERMOSTAT . 24
Remote Wall Mounted ermostat...............................24
Wireless Wall Mounted ermostat.............................. 24
Remote ermostat Interface........................................ 25
INSTALLATION INSTRUCTIONS  INTERIOR
GRILLE..........................................................................26
Interior Return Air Grille.............................................. 26
WIRING DIAGRAMS .................................................... 27
SYSTEM CONTROLS AND MANAGEMENT..............29
USER INTERFACES...................................................... 29
Wall ermostats........................................................... 29
Front Desk Control........................................................ 29
Controls Logic ............................................................... 30
Room Freeze Prevention ...............................................30
High Temperature Compressor Protection ..................30
Low Temperature Compressor Protection.................... 30
Diagnostic Soware....................................................... 30
Custom Operation and Continual Room
Temperature Monitoring.............................................. 30
Operating Guidelines ....................................................31
MAIN CONTROL BOARD .......................................... 32
PERFORMANCE SPECIFICATIONS ........................... 33
Vertical Packaged Terminal Cooling Unit With
Heat Pump Or Electric Heating ...................................33
TYPICAL WARRANTY ................................................. 36
EZ REPLACEMENT GUIDE.......................................... 37
INTRODUCTION .......................................................... 3
Our Company ................................................................3
e Perfect Fit................................................................ 3
APPLICATIONS ............................................................. 4
New Construction..........................................................4
Advantages For New Construction ............................... 4
Retrot/Replacement .................................................... 4
Application Considerations ..........................................5
Undersizing.................................................................... 5
Oversizing...................................................................... 5
Air Inltration............................................................... 5
Guaranteed Quality ....................................................... 5
Indoor Air Quality - DR.VTAC..................................... 5
PRODUCT OVERVIEW ................................................ 6
Quiet Operation ............................................................ 6
Durable Construction ...................................................6
Corrosion Protection..................................................... 6
CHASSIS FEATURES AND BENEFITS ........................7
Slide Out Chassis – ........................................................7
Wall Plenum –................................................................ 7
Exterior Louver/Grilles – .............................................. 7
Removable Access Panel – .............................................7
Slinger Fan – ..................................................................7
Venturi Shroud – ........................................................... 7
EZ SERIES VP DATA...................................................... 8
Model Nomenclature .....................................................8
Performance Data for EZ Series VP ..............................9
Heating options ............................................................. 9
Electrical ........................................................................ 9
EZ SERIES VR DATA...................................................... 10
Model Nomenclature .....................................................10
Performance Data for EZ Series VR.............................. 11
Heating options ............................................................. 11
Electrical ........................................................................ 11
PRODUCT INFORMATION ......................................... 12
Heat Pump Features ......................................................13
DIMENSIONAL DRAWINGS........................................ 14
INSTALLATION INSTRUCTIONS  WALL PLENUM 17
Wall Plenum...................................................................17
INSTALLATION INSTRUCTIONS  EXTERIOR
GRILLE.......................................................................... 18
Standard exterior (Rear) Grille .....................................18
Architectural Exterior (Rear) Grille ............................. 19
INSTALLATION INSTRUCTIONS  BASE
PLATFORM................................................................... 20
Base Platform Construction.......................................... 20

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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, water source heat
pumps, and gas units in East Setauket, New York. Each model ts per-
fectly into the existing original wall case assembly, thereby saving both
time and money during 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
Introduction

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Applications
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 equip-
ment
• 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 electronic logic. Separate indoor and
outdoor fans provide lower operating costs. Energy
management capability is built into the unit’s stan-
dard digital controls.
ese units may also qualify for electrical power
company rebates. Consult your local utility provider
for rebate opportunities.
Retrofit/
Replacement
Islandaire VTAC units are engineered to t per-
fectly within existing GE wall cases, thereby reduc-
ing installation 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 Quick slide-out chassis eases installation
into the wall case. Rapid servicing reduces down-
time; the complete chassis can be replaced in min-
utes without disrupting other occupants.
e EZVP and EZVR Series vertical terminal air
conditioning (VTAC) units are designed and manu-
factured for new construction or the replacement of
units in an existing building. Our VTAC units pro-
vide year-round comfort control for hotels, motels,
apartments, dormitories, shops, nursing homes,
assisted living centers, satellite oces, room addi-
tions and other applications that require economical
heating and cooling.
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 con-
struction 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 ex-
ibility 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 building, 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 installation, Islandaire’s expert support network
will assist in all applicable aspects of the construc-
tion project, from preparing a budget to start-up.

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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
construction 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 accept-
able air quality levels. e secondary stage brings in
conditioned outside air at a rate of up to 75 CFM, to
compensate for toilet exhaust and room occupancy,
and continuously pressurizes the room. e sec-
ondary 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 recom-
mended maximum 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 75 CFM
(leaving coil CFM) to enter the room. e unit is
manufactured in accordance to AHRI, UL, CSA
standards for the primary side and AHAM and UL
standards for the secondary side.
Application
Considerations
It is important for air conditioning systems to
be properly sized for each application in order to
achieve desired temperature and humidity levels. It
is strongly recommended that a professional engi-
neer match the VTAC units with the building struc-
ture and regional climate.
e following application considerations are all
important in choosing the proper VTAC system for
the building structure.
UNDERSIZING
If a VTAC unit is undersized (cooling capacity is
less than required capacity for the specic applica-
tion), 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 appli-
cation), 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
associated with undersizing or oversizing a VTAC
unit. is can be the cause of insucient cooling,
dehumidication, or heating. Sources of air inltra-
tion include vents, gaps around windows and doors,
and improperly sealed oors, ceiling or wall joints.

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Product Overview
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 com-
ponents that feature corrosion protection:
• Wall Case - e entire wall case is constructed
of 18-gauge galvanized steel.
• Base Pan - e base pan 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.
• Compressor - Protectively-coated exterior to
enhance equipment life and performance.
• Outdoor Louver - Made of aluminum, etched
and anodized for maximum corrosion protec-
tion. Available in various architectural styles.
Can be painted in a wide choice of colors.
Quiet Operation
e VTAC unit provides whisper quiet operation
while delivering maximum airow required for
proper air circulation. Separate indoor and out-
door fan motors further reduce operating sound
levels and costs.
e heavy gauge construction of the chassis and
cabinet minimizes vibration for quieter operation.
Vibration isolators on the rotary compressor keep
it running smoothly and quietly. e unit bulk-
head 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.
• Our wall cases are constructed of 18-gauge
thick galvanized steel for maximum durability.
• 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 per-
manently 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.

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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 21 for chassis installation instructions
Wall Plenum –
• Heavy 18 gauge steel with powder paint coating for maximum
scratch, dent and corrosion resistance
• Optional wall depths of 6”, 8”, 10”, 12”, and 15” available
See page 17 for wall plenum installation instructions
Exterior Louver/Grilles –
• Architectural extruded aluminum grille
• Custom colors available (Ask for our color chart sheet)
• Recessed available
See page 18 for exterior grille installation instructions
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
• 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
Chassis Features and Benefits

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EZ Series VP Data
ModelNomenclature
Please review the nomenclature/model number
breakdown below for the EZ Series VP options.
Units are available in four cooling BTUh capaci-
ties: 9,000; 12,000; 15,000; 18,000
Voltage options are: 208/230V or 277V
Control choices include multiple-wired, wall-
mounted heating/cooling thermostats and a wireless
wall thermostat, with occupancy sensor control.
FEATURES: ACCESSORIES:
•18 gauge galvanized, powder-coat
painted wall plenum
•Motion sensor/door switch
capable
•Superior temperature control
•Dehumidication of room air
•Wall thermostat required
•Compressor freeze protection
•Self diagnosis
•Random Auto Re-start
•Compressor time delay
•Front desk control capable
•Room side freeze protection
•Motorized fresh air damper
•Power disconnect
•High pressure cutout
•Wired remote thermostat
•Wireless remote thermostat
•Energy Management ermostat
•I.R. motion sensor
•Door switch
•Access Panel (louvered, non-
louvered, and sound-reduction
types)
•Return Air Grille
OPTIONS:
•Architectural Louver
COMPONENT
EZ - Cooling Chassis
MODEL TYPE
VP - Islandaire Vertical Unit
COOLING CAPACITY
09 - 9,000 BTU
12 - 12,000 BTU
15 - 15,000 BTU
18 - 18,000 BTU
VOLTAGE / LINE CORD
2 - 230V 20 Amps
3 - 230V 30 Amps
4 - 230V Junction Box
7 - 277 V 20 Amps
8 - 277 V Junction Box
9 - 230V 15 Amps
F - 277V 30 Amps
HEATING OPTIONS
A - None, Cooling Only
B - 2.5 KW Electric Heat
C - 3.6 KW Electric Heat
E - 5.0 KW Electric Heat*
*5.0 KW heat available on
15 & 18 kBTU units only
ROOM CONTROLS
1- None N - Standard Electronic Control Remote
Thermostat
FUNCTIONAL OPTIONS
B- Motorized Fresh Air Damper
POWER MANAGEMENT OPTIONS
A- None
C- Energy Mgt. N/O
D- Energy Mgt. N/C
IDENTITY CODE
0 - Special
5 - Standard
RETURN DISCHARGE OPTIONS
4 - Front Return/Top Discharge
EZ VP 12 A 2 C 1 N 4 5 A B
HYDRONIC OPTIONS
SYSTEM TYPE
A - Standard Chassis (R410A)
B - Heat Pump (R410A)

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EZ Series VP Data (Cont.)
Performance Data for EZ Series VP
EZ09 EZ12 EZ15 EZ18
VOLTS 208-230 265-277 208-230 265-277 208-230 265-277 208-230 265-277
COOLING BTUH 8900 8900 11700 11700 14800 14800 17500 17500
COOLING LATENT BTUH 2225 2225 2925 2925 3700 3700 4375 4375
COOLING SENSIBLE BTUH 6675 6675 8775 8775 11100 11100 13125 13125
AMPS 3.87 3.21 5.09 4.22 6.43 5.34 7.61 6.32
COOLING WATTS 890 890 1170 1170 1480 1480 1750 1750
EER 10 10 10 10 10 10 10 10
CFM HIGH SP 0.1” 424 424 482 482 532 532 565 565
CFM LOW SP 0.1” 370 370 421 421 475 475 525 525
HEATING BTUH 8400 8400 10900 10900 13400 13400 15500 15500
HEATING WATTS 820 820 1065 1065 1309 1309 1514 1514
COP 33333333
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.
HEATING OPTIONS
Heating
Option Voltage (1) Wattage B.T.U.s (2) Amps (3) MCA (4) MOP (Amps) Power Cord
B
208
230
277
2,050
2,500
2,500
7,000
8,535
8,535
10.46
11.47
9.63
13.1
14.3
12.0
15
15
15
6-15
6-15
7-20
C208
230
277
2,950
3,600
3,600
10,070
12,290
12,290
14.78
16.25
13.60
18.5
20.3
17.0
20
20
20
6-20
6-20
7-20
E208
230
277
4,100
5,000
5,000
14,000
17,070
17,070
20.31
22.34
18.65
25.4
27.9
23.3
30
30
30
6-30
6-30
7-30
(1) Voltage is 60Hz, Single Phase, Alternating Current and R.M.S. (2) Heating Capacity (B.T.U./Hr.) based on indoor
blower motor and heating elements. (3) Amp values are a combination of indoor blower motor and heating elements.
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 2.5 - 3.6 4.2 - 5.0 2.5 - 4.2 2.5 - 4.2
* All data is subject to change

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ModelNomenclature
Please review the nomenclature/model number
breakdown below for the EZ Series VR options.
Units are available in four cooling BTUH capaci-
ties: 9,000; 12,000; 15,000; 18,000
EZ Series VR Data
Voltage options are: 208/230V or 277V
Control choices include multiple-wired, wall
mounted heating/cooling thermostats and a wireless
wall thermostat, with occupancy sensor control
HYDRONIC OPTIONS
MODEL TYPE
VR - DR. VTAC
VOLTAGE / LINE CORD
2 - 230V 20 Amps
3 - 230V 30 Amps
4 - 230V Junction Box
7 - 277 V 20 Amps
8 - 277 V Junction Box
9 - 230V 15 Amps
F - 277V 30 Amps
COMPONENT
EZ - Cooling Chassis
COOLING CAPACITY
09 - 9,000 BTU
12 - 12,000 BTU
15 - 15,000 BTU
18 - 18,000 BTU
SYSTEM TYPE
A- Standard Chassis (R410A)
B - Heat Pump (R410A)
HEATING OPTIONS
A - None, Cooling Only
B - 2.5 KW Electric Heat
C - 3.6 KW Electric Heat
E - 5.0 KW Electric Heat *
*5.0 KW heat available on
15 & 18 kBTU units only
ROOM CONTROLS
1- None N - Standard Electronic Control
Remote Thermostat
FUNCTIONAL OPTIONS
A - None
B - Dehum-heater 250w
C - Dehum-heater 400w
POWER MANAGEMENT OPTIONS
A - None
P - Energy Mgt. N/O
T - Energy Mgt. N/C
IDENTITY CODE
0 - Special
5 - Standard
RETURN DISCHARGE OPTIONS
4 - Front Return/Top Discharge
EZ VR 12 A 2 C 1 N 4 5 A B
FEATURES: ACCESSORIES: LEED* POINTS ACHIEVED:
•18 gauge galvanized, powder-coat painted
wall plenum
•Up to 75 CFM Continuous
Conditioned fresh air
•Motion sensor/door switch capable
•Superior temperature control
•Dehumidication of room air
•Wall thermostat required
•Compressor freeze protection
•Self diagnosis
•Random Auto Re-start
•Compressor time delay
•Front desk control capable
•Room side freeze protection
•Power disconnect
•High pressure cutout
•Wired remote thermostat
•Wireless remote thermostat
•Energy Management ermostat
•I.R. motion sensor
•Door switch
•Access Panel (louvered, non-
louvered, and sound-reduction
types)
•Return Air Grille
OPTIONS:
•Electric heat add-on for the
DR.VTAC fresh air system for cold
climates
•Architectural Louver
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)

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EZ Series VR Data (Cont.)
Performance Data for EZ Series VR
EZ09 EZ12 EZ15 EZ18
VOLTS 208-230 265-277 208-230 265-277 208-230 265-277 208-230 265-277
COOLING BTUH 8900 8900 11700 11700 14800 14800 17500 17500
COOLING LATENT BTUH 2225 2225 2925 2925 3700 3700 4375 4375
COOLING SENSIBLE BTUH 6675 6675 8775 8775 11100 11100 13125 13125
AMPS 3.87 3.21 5.09 4.22 6.43 5.34 7.61 6.32
COOLING WATTS 890 890 1170 1170 1480 1480 1750 1750
EER 10 10 10 10 10 10 10 10
CFM HIGH SP 0.1” 424 424 482 482 532 532 565 565
CFM LOW SP 0.1” 370 370 421 421 475 475 525 525
CONDITIONED MAKE UP AIR (CFM) 55 55 55 55 55 55 55 55
HEATING BTUH 8400 8400 10900 10900 13400 13400 15500 15500
HEATING WATTS 820 820 1065 1065 1309 1309 1514 1514
COP 33333333
DEHUMIDIFIER 250W HEATER AMPS (OPT) 1.09 0.90 1.09 0.90 1.09 0.90 1.09 0.90
DEHUMIDIFIER 400W HEATER AMPS (OPT) 1.74 1.44 1.74 1.44 1.74 1.44 1.74 1.44
DEHUMIDIFIER AMPS 1.13 0.90 1.13 0.90 1.13 0.90 1.13 0.90
DEHUMIDIFIER WATTS 260 207 260 207 260 207 260 207
DEHUMIDIFIER LITERS/DAY* 7.90 7.90 7.90 7.90 7.90 7.90 7.90 7.90
DEHUMIDIFIER CFM 55 55 55 55 55 55 55 55
DEHUMIDIFIER CONTROL Automatic Automatic Automatic Automatic Automatic Automatic Automatic Automatic
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.
*AHAM condition 60% RH, 80 °F DB
HEATING OPTIONS
Heating
Option Voltage (1) Wattage B.T.U.s (2) Amps (3) MCA (4) MOP (Amps) Power Cord
B
208
230
277
2,050
2,500
2,500
7,000
8,535
8,535
10.46
11.47
9.63
13.1
14.3
12.0
15
15
15
6-15
6-15
7-20
C208
230
277
2,950
3,600
3,600
10,070
12,290
12,290
14.78
16.25
13.60
18.5
20.3
17.0
20
20
20
6-20
6-20
7-20
E208
230
277
4,100
5,000
5,000
14,000
17,070
17,070
20.31
22.34
18.65
25.4
27.9
23.3
30
30
30
6-30
6-30
7-30
(1) Voltage is 60Hz, Single Phase, Alternating Current and R.M.S. (2) Heating Capacity (B.T.U./Hr.) based on indoor
blower motor and heating elements. (3) Amp values are a combination of indoor blower motor and heating elements.
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 2.5 - 3.6 4.2 - 5.0 2.5 - 4.2 2.5 - 4.2
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 17.02

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12
Product Information
e Dr. VTAC system is an add on system to our standard VTAC unit to provide conditioned make up air into
a space through the VTAC unit by providing up to 75 CFM of outdoor air 24/7 by forced fan and cycling dehu-
midier compressor based on outdoor relative humidity levels.
Dr. VTAC was created to solve issues with dehumidication in rooms and to introduce fresh 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 introduc-
tion 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 primar-
ily a dehumidication unit that provides up to 75 CFM of outside fresh 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 compressor/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cation is stopped. However, fan operation continues to provide up
to 75 CFM of outdoor air into the room.
e dehumidication system has a temperature switch that monitors both the refrigeration and the outdoor air
temperatures. 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 available for the fresh air system for applications where operation in cold winter cli-
mates is required. Condensate from the dehumidi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 drained into the wall
case which can then either drain to the outside through the louver OR be piped to a eld-supplied drainage
system.
ADVANTAGES OF THE DR. VTAC SYSTEM:
1. Lower installation/renovation costs than typical DOAS*
2. Decrease inconvenience to customer due to construction/installation of a DOAS* system
3. Precise humidity control in a room as compared to a simple VTAC vent or power vent system
4. Allows fresh make up air to travel entirely across sleeping and living areas of a room, exiting through a duct
or under the door.
*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 posi-
tion. When the cooling controls are activated, the valve
automatically 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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14
Dimensional Drawings
Units must be installed in accordance with all applicable codes. Ensure that there is adequate clearance for ser-
vicing and proper operation. A minimum clearance of 18 inches in front of the air return is required. Provide
additional space for the service technician to work on the unit. Ensure that drapes, beds, bedspreads, furniture,
etc., DO NOT block either the return or discharge air openings.
Your airow should be balanced based on many factors, such as available ESP, room CFM, and ductwork.
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.
Important Notes
‘A’ dimension determined by wall thickness and plenum size selected
‘B’ dimension minimum 4” for front installation,
‘B’ dimension minimum 5” for side installation (7” recommended)
‘C’ and ‘D’ dimensions minimum 3” for front installation
‘C’ and ‘D’ dimensions minimum 3” for side installation
‘E’ dimension minimum for 28” door - 33”
‘E’ dimension minimum for Islandaire Access Panel - 30”
Figure 1 Dimensional Drawings (Unit Top Down View)
2 1/4”
OUTDOOR GRILLE
PLENUM 1”
PLENUM
A
OUTDOOR WALL
23 1/8”
WIDE
VP/VR CHASSIS CASE
23 1/8”
DEEP
E
D
B
C
E
CLOSET WALL

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Dimensional Drawings (Cont.)
See page 16
REMOVE HEX
SCREW
REMOVE TOP AND
SIDE SCREWS,
ROTATE OUTWARDS
FULLY
REMOVE
SIDE
PANEL
SCREWS
PULL UNIT FORWARD SLIGHTLY,
THEN SLIDE OUT OF CASE
SIDE-MOUNTED CHASSIS REMOVAL:
Figure 1-A Dimensional Drawings (Unit and Platform)
23 1/8”
23 1/8”
31”
23 1/4” 23 1/4”

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Dimensional Drawings (Cont.)
Side View
UNIT INSTALLED THROUGH FRONT OF
CASE (RECOMMENDED) UNIT INSTALLED THROUGH SIDE OF CASE
FILTER
BRACKET
FEMALE DRAIN
FITTING 3/4”
PLENUM CUTOUT
32-1/4”H x 20-1/8”W
INSIDE WALL OUTSIDE WALL
RIGID
DUCTWORK
FLEXIBLE OR
RIGID DUCT
UNIT/CASE
WALL PLENUM - EXTEND
1/4” FOR CAULKING
EXTERIOR/OUTSIDE
EXTERNAL DRAIN LINE
BOTTOM OF CASE APPROX. 2”
ABOVE BOTTOM OF PLENUM
WALL PLENUM
BOTTOM OF CASE
APPROX. 2” ABOVE
BOTTOM OF PLENUM
PLATFORM
PLATFORM: 23-1/4” x 23-1/4”
SQUARE
MIN. LOAD CAPACITY: 230 LBS.
8” MIN. FOR
DRAIN ACCESS
• 4” MIN. FROM FRONT OF CASE - UNIT
INSTALLED THROUGH FRONT OF CASE
• 5” MIN. FROM FRONT OF CASE - UNIT
INSTALLED THROUGH SIDE OF CASE
• 3” MIN. FROM TWO SIDES OF CASE
OUTSIDE WALL FIELD SUPPLIED
OUTER FLASHING
A
B
A: MINIMUM RECOMMENDED ACCESS DOOR WIDTH 30”
B: MINIMUM RECOMMENDED ACCESS DOOR HEIGHT 50”
Top View Top View
RTS CONNECTION
REMOVE FRONT
COVER TO GAIN
ACCESS
~2 1/4”
3” MIN.
4” MIN.
UNIT
FRONT DOOR/ACCESS PANEL
~1”
3” MIN.
10-1/2”
10”
DUCT
11-3/4”
ELECTRICAL
CONNECTION
ARCHITECTURAL LOUVER
19-7/8”
AIR DISCHARGE
OUTLET
2-INCH (MIN.)
10-INCH (MAX.)
~2 1/4”
3” MIN.
3” MIN.
7” RECOMMENDED,
5” MIN.
UNIT
FRONT
DOOR/ACCESS
PANEL
~1”
11-3/4”
10”
DUCT
10-1/2”
ARCHITECTURAL LOUVER
ELECTRICAL
CONNECTION
19-7/8”
RTS CONNECTION
REMOVE FRONT COVER
TO GAIN ACCESS
Figure 1-C Dimensional Drawings (Chassis)

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Installation Instructions - Wall Plenum
Wall Plenum
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 ple-
num 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
window opening in the wall. If the building construction is brick, concrete block, or other non self-supporting
material, 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, o the interior nished oor.
Islandaire oers ve plenums; the choice of the correct plenum is determined by the thickness of the building’s
exterior wall (see below). 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 ductwork for later connection to the case. Plenum duct should be insulated to prevent con-
densation and to reduce air noise.
PROPERLY LEVEL AND
SQUARE PLATFORM
ARCHITECTURAL LOUVER
EXTERIOR/OUTSIDE WALL
WALL PLENUM
CASE
Type 1: 6”D x 19 7/8”W x 32”H
Type 2: 8”D x 19 7/8”W x 32”H
Type 3: 10”D x 19 7/8”W x 32”H
Type 4: 12”D x 19 7/8”W x 32”H
Type 5: 15”D x 19 7/8”W x 32”H

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Installation Instructions - Exterior Grille
Standard exterior
(Rear) Grille
e standard exterior grille (louver) is mounted to the
exterior ange of the plenum and held in place with four
screws inserted from inside the enclosure closet. e
grille is designed specically for use with the VTAC unit
and the use of any other grille must be approved by Islan-
daire Air Conditioning Applications Engineering.
1. Prepare the grille for installation by installing the ve
plastic fasteners supplied through the holes in the
grille.
2. Guide the alignment pins, located on the lower right
and lower le hand corners of the grille into their
corresponding holes on the rear outside edge of the
plenum.
3. If installing the grille from inside the room, use a plas-
tic wire zip-tie or tie a short length of string or insu-
lated wire around several louvers as a holding device
in order to keep a rm grasp on the grille. Angle the
grille through the opening at the rear of the plenum,
then pull the grille back to the plenum and align the
screw heads to the hole. Be sure to keep a rm grip
on the grille to prevent it from dropping and/or caus-
ing possible injury and/or property damage.
4. Secure the grille to the plenum by installing screws
into the plastic fasteners. Be careful not to damage
fasteners by overtightening. Remove the holding
device (plastic wire zip-tie, etc.) when installation is
complete.
PLASTIC
FASTENER
Figure 2 Standard Grille Fastener
INSIDE
WALL
Figure 3 Standard Grille Installation
STANDARD
GRILLE
ANGLE THE GRILLE
THROUGH THE OPENING
AT BACK OF PLENUM
PULL FORWARD
TO INSERT SCREW
HEADS INTO
KEYHOLE SLOTS
HOLES
SECURE THE GRILLE TO THE
PLENUM BY TIGHTENING
SCREW HEADS IN HOLES.
DO NOT OVERTIGHTEN
Figure 4 Standard Grille Installation

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Installation Instructions - Exterior Grille
Architectural
Exterior (Rear) Grille
e architectural rear grille directs condenser airow
and provides a protective barrier for the outdoor coil.
Either the approved Standard or Architectural grille must
be installed before installing the chassis.
1. Install the four threaded studs into the threaded
openings on the inside face of the grille. Install a
washer and one hex nut to the end of each stud.
2. Manipulate the grille out through the rear ple-
num opening. Be sure to keep a rm grip on the
grille to prevent it from dropping and/or causing
possible injury or property damage.
3. Attach the grille to the plenum by aligning and
inserting the hex nut threaded onto the studs
through the holes in the plenum.
4. Secure the grille to the plenum by tightening the
hex nut and adding and tightening an additional
hex nut.
Architectural Rear Grille, 4 Studs, 4 Washers,
(8) Hex Nuts
Figure 5 Architectural Rear Grille Parts
STUD HEX NUT
WASHER
INSTALL THE FOUR THREADED STUDS INTO THE THREADED
OPENINGS ON THE INSIDE FACE OF THE GRILLE. INSTALL
WASHERS AND HEX NUTS TO THE END OF EACH STUD.
Figure 6 Threaded Stud Installation
ARCHITECTURAL-
GRILLE
INSIDE
WALL
ANGLE THE GRILLE THROUGH
THE OPENING AT BACK OF
PLENUM
PLENUM
ARCHITECTURAL
GRILLE
PULL FORWARD TO GUIDE HEX NUTS
THROUGH HOLES IN PLENUM, THEN
TIGHTEN HEX NUTS. SECURE WITH AN
ADDITIONAL HEX NUT.
Figure 7 Arch. Rear Grille Installation
1
2
2
ARCHITECTURAL
GRILLE

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Installation Instructions - Base Platform
Base Platform Construction
e VTAC unit requires a eld-supplied base platform (having a load-bearing capacity of 230 lbs. mini-
mum). For warranty purposes, the base platform must be constructed to ensure the unit chassis can be
removed through the access panel. Proceed as follows:
1. Construct a 23 1/4” min. x 23 1/4” min. square platform with legs to raise platform a minimum of 8”
(12” recommended), see diagram above.
2. Make the drain hole cutout(s) as follows
• Primary Drain - Centerline of drain is approximately 4.695” from le platform edge and 8.875”
from back platform edge.
• Secondary Drain - Centerline of drain is approximately 6.625” from le platform edge and 5.625”
from back platform edge.
3. Place the platform in the utility closet large enough to provide the following clearances between it and
the interior surface of the walls/door/panel:
NOTE: When determining the closet depth, consideration must be given to the fact that the ple-
num will protrude into the closet because the plenum will be thicker than the exterior wall.
• If VTAC unit is to be installed through the front of case: 4” minimum clearance from the front of
the platform to inside of the closet door, 3” minimum clearance from each side of the case.
• If VTAC unit is to be installed through the side of case: 5” minimum clearance from the front of the
case, 5” minimum clearance from each side.
4. e platform legs must be positioned so access to the unit drain connections are not blocked. Align
the platform with the opening of the wall plenum and secure to the oor using appropriate brackets
and screws.
PLATFORM
6.0
6.2
4.62
8.7
LEFT SIDE OF PLATFORM
23.25” MIN
8” MIN FOR
DRAIN ACCESS
BACK SIDE OF PLATFORM
23.25” MIN
CUTOUT FOR DRAIN
CONNECTION(S) (SEE
NOTE BELOW)
NOTE: Specic cutout size and locations for drain con-
nections must be conrmed by the installer for the given
installation.