40QAC / 38HDR
40QAQ / 38QRR
Ceiling---Suspended Duct Free S plit System
Sizes 018 to 060
Product Data
INDUSTRY LEADING
FEATURES / BENEFITS
AN INEXPENSIVE AND CREATIVE
SOLUTION TO DESIGN PROBLEMS.
The 38HDR(QRR)/40QAC(QAQ) series duct--free split systems
are a matched combination of an outdoor condensing unit and an
indoor fan coil unit connected only by refrigerant tubing and wires.
The ceiling--suspended fan coils are ideal for retrofit and
modernization projects where it is impractical or prohibitively
expensive to run ductwork and where there are no false ceilings or
wall space available.This selection of fan coils permits
inexpensive and creative solutions to design problems such as:
the environmentally sound refrigerant
The ideal compliment to your ducted system when it is impractical
or prohibitively expensive to use ductwork.
SSpecial space requirements such as garages.
SWhen changes in the load cannot be handled by the
existing system like restaurants.
SWhen adding air conditioning to spaces that are heated
by hydronic or electric heat and have no ductwork like
schools.
SHistorical renovations or any application where
preserving the look of the original structure is essential
like churches.
These compact indoor fan coil units blend nicely with most
ceilings and protrude less than 10 inches (254 mm) from the
ceiling.Advanced system components incorporate innovative
technology to provide reliable cooling performance at low sound
levels.
LOW SOUND LEVELS
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When noise is a concern, ceiling--suspended duct--free split systems
are the answer. The indoor units are whisper quiet. There are no
compressors indoors, either in the conditioned space or directly
over it, and there is none of the noise usually generated by air
being forced through ductwork.
When sound ordinances and proximity to neighbors demand quiet
operation, the 38HDR/QRR unit is the right choice: The advanced,
blow--through horizontal airflow design distributes air more evenly
over the coil.
BUILT--IN RELIABILITY
Duct--free split system indoor and outdoor units are designed to
provide years of trouble--free operation.
The high wall indoor units include protection against freeze--up.
The condensing units and heat pumps are also protected. There is
a three minute time delay before the compressor will start.
An oversized accumulator on heat pumps, high and low pressure
switches ( loss of pressure switch on heat pumps), and compressor
internal overload protection will ensure a robust system that is ideal
for light commercial applications.
SECURE OPERATION
If security is an issue, outdoor and indoor units are connected only
by refrigerant piping and wiring to prevent intruders from crawling
through ductwork. In addition, since 38HDR/QRR units can be
installed close to an outside wall, coils are protected from vandals
and severe weather.
FAST INSTALLATION
The small footprint of the outdoor units provide additional
benefits.Because they require minimal service and airflow
clearances, the outdoor units can be located virtually anywhere -on the ground, roof, balcony, under a deck, or even mounted to an
outside wall.
The ceiling--suspended unit has its own mounting bracket for
easier installation. Since there is no need to run ductwork and only
piping and wiring is required between the indoor and outdoor
units, there is minimal disruption to customers in the workplace,
making this system ideal for retrofit applications.
40QAC/38HDR -- 40QAQ/38QR
SIMPLE SERVICING AND
MAINTENANCE
Saving time and money was a big consideration when designing
these systems.
On all indoor units, service and maintenance expense is reduced
due to easy--to--use cleanable filters and the ability to service the
unit from the bottom by removing the filter tracks.
On the outdoor units, a single panel provides immediate access to
the isolated compressor and control compartment, allowing a
service technician easy access to check the unit operation without a
loss of condenser airflow. In addition, the blow--through design of
the outdoor section means that dirt accumulates on the inside
surface of the coil. Coils can be cleaned from the outside using a
pressure hose and mild detergent without removing grilles or using
fin combs.
INDIVIDUAL ROOM COMFORT
Maximum comfort is provided because each space can be
controlledindividuallybasedonusagepattern.The
ceiling--suspended units are equipped with motorized louvers
which permits optimal room air mixing to eliminate hot and cold
spots for occupant comfort. In addition, year--round comfort can be
provided with heat pumps.
ECONOMICAL OPERATION
The duct--free split system design allows individual room heating
or cooling when required. There is no need to run large supply--air
fans or chilled water pumps to handle a few spaces with unique
load patterns. In addition, because air is moved only in the space
required, no energy is wasted moving air through ducts.
EASY--TO--USE CONTROLS
The ceiling--suspended units have electro--mechanical controls and
can be controlled by one of three user friendly thermostats that
mount on the wall.
FLEXIBILITY
A variety of accessories simplify the installation process and help
meet system requirements and weather considerations. Available
accessories are listed in the Standard Features and Accessories
section of this document.
AGENCY LISTINGS
All systems are listed with AHRI (Air Conditioning &
Refrigeration Institute), and UL.
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MODEL NUMBER NOMENCLATURE
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INDOOR UNIT
40QAC3---01
018
---
Fan Coil Unit
Unit Type
QAC --- C o o l i n g O n l y
QAQ --- H e a t P u m p
Nominal Capacity*
024 --- 2 To n
036 --- 3 To n
048 --- 4 To n
060 --- 5 To n s
Volt age
3 --- 208/230 ---1 ---60
OUTDOOR UNIT
38HDR3--- 01
Air--- Cooled Condenser
Unit Type
HDR --- C o o l i n g Only
QRR --- H e a t P u m p
* For nominal size 018 and 030, the indoor unit sizes 024 and 036 are matched with outdoor unit sizes 018 and 030 respectively.
** On sizes 036, 048 and 060
018
Nominal Capacity
018 --- 1 --- 1 / 2 T o n
024 --- 2 To n
030 --- 2 --- 1 / 2 T o n
036 --- 3 To n s
048 --- 4 To n s
060 --- 5 To n s
---
Volt age
3--- 208/230--- 1---60
5--- 208/230--- 3---60**
6--- 4 6 0 --- 3 --- 6 0 * *
40QAC/38HDR -- 40QAQ/38QR
Use of the AHRI Certified
TM Mark indicates a
manufacturer’s
participation in the
program For verification
of certification for individual
products, go to
www.ahridirectory.org.
®
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STANDARD FEATURES AND ACCESSORIES
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Ease Of Installation
Compact SizeS
Hanging Bracket For Indoor UnitS
Stacking KitA
Wall Mounting KitA
Condensate PumpA
Comfort Features
Automatic Air SweepS
Auto Restart FunctionS
Auto Changeover On Heat PumpsS
Energy Saving Features
Stop/Start TimerS
Safety And Reliability
3MinuteTimeDelayForCompressorS
Over Current Protection For CompressorS
High and Low Pressure Switches on Cooling Only U nitsS
High Pressure Switch and Loss Of Charge Switch On HPS
Indoor Coil Freeze ProtectionS
Factory Supplied Filter Dryer For Field InstallationS
Accumulator On Heat Pumps UnitsS
Ease Of Service And Maintenance
Control Box Accessible From Bottom Of UnitS
Cleanable FiltersS
Liquid Line Pressure TabsS
Suction And Discharge Pressure TabsS
Application Flexibility
208/230 and 460 3 Phase on size 036, 048, and 060S
Electric Heat On 40QAQ Un itsS
Long lines up to 200 Ft (accessories required)A
Outside Air Intake KitA
Power Ventilation KitA
Low Ambient Controls ( --- 20° F)A
40QAC/38HDR -- 40QAQ/38QR
Knock Out For Outside Air IntakeS
Wind BafflesA
Wall Mounted ThermostatsA
Warranty
5--- Year Compressor WarrantyS
1--- Year Parts WarrantyS
Compressor Extended Warranty Years 6 Thru 10O
All Parts And Labor Years 2 Thru 5O
All Parts And Labor Years 2 Thru 5, Compressor Years 6 Thru 10O
Legend
SStandard
A Accessory
OOptional
OUTDOOR UNITS
LOW AMBIENT KIT
The kit controls condenser fan cycling using a pressure switch. It is
specifically designed to control fan--motor cycles in response to
saturated condensing pressure. This device maintains a constant
saturated condensing temperature of 100 _F ± 10 _F (37.78_C ±
--12.22 _C) at outdoor--air temperatures between 55 _F and --20 _F
(12.78_C ± --12.22_C), and can be used on all outdoor units
without changing the outdoor fan motor.
WINTER START CONTROL
The Winter Start Control is a SPST delay relay. the control
bypasses the low pressure switch for approximately 3 minutes to
permit start--up for cooling operation under low load conditions at
low ambient temperatures. This relay is recommended on all
systems that have the accessory Low Ambient Kit. Winter Start
Control can also be used to provide low ambient cooling at
outdoor ambient temperatures between 55_F and 40_F (12.8_C
and 4.4_C).
ISOLATION RELAY
To be used when Low Ambient Kit is used with heat pumps. This
will ensure that the pressure switch is bypassed if unit is running in
heat pump mode.
LIQUID LINE SOLENOID VALVE
The Liquid Line Solenoid Valve is an electronically operated
shutoff valve that is installed at the outdoor unit to stop and start
refrigerant flow in response to compressor operation. The valve
maintains a column of refrigerant in the liquid line between
compressor operating cycles and is required for certain long--line
applications and to improve system performance.
CRANKCASE HEATER
The Crankcase Heater is available for units with scroll compressors
and clamps onto the compressor oil sump. It is recommended for
low ambient and long line applications.
WIND BAFFLES
The Wind Baffle is an accessory sheet metal wrapper used to
provide improved unit operation during high winds and is
recommended whenever the Low Ambient Kit is used.
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STANDARD FEATURES AND ACCESSORIES CONTINUED
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INDOOR UNITS
CONDENSATE PUMP
(part # 53DS--900------081)
For those applications where the ceiling--suspended unit is not
installed close to an outside wall, and an adequate pitch cannot be
provided, the pump mounts inside the unit with quick plug--in
connections and provide a maximum lift capability of 20 inches
(508 mm).
Fig. 1 – Condensate Pump
A08572
FRESH AIR INTAKE KIT
(Part # 53DS--900------006)
When the ceiling--suspended unit is installed against an outside
wall, the Fresh Air Intake Kit provides variable (up to 30%) fresh
air capability. The kit has a filter that mounts at the fan coil unit
and provides filtering of the outside air before it enters the unit.
POWER VENTILATION KIT
(Part # 53DS--900------066)
The Power Ventilation Kit is used in conjunction with the Fresh
Air Intake Kit and is used when the unit is not installed against an
outside wall and where static pressure needs to be overcome.
REAR OF INDOOR
UNIT
INDOOR UNIT
(TOP)
COVER
ADJUSTABLE
VENTILATION
AIR DAMPER
AIR FILTER
Fig. 2 – Fresh Air Intake Kit
40QAC/38HDR -- 40QAQ/38QR
A08573
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WIRED CONTROLLER
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HW Thermostat (Part # 53DFS250--HW)
A specially designed thermostat for ceiling--suspended systems that
incorporate 3--speed fan control. These can be used on both
cooling--only and heat pump systems.
SLarge, Clear DisplaywithBacklighting—current
temperature, set temperature and time are easy--to--read
and all are displayed on the main screen.
SMenu Driven Programming -- Provides guidance
through the scheduling process, showing only necessary
information and choices on each screen.
SAbility to Select Multiple Days -- allows easy
customizing for unique schedules.
SReal--Time Clock -- keeps time during power failure;
automatically updates for daylight saving time.
SPrecise Temperature Control (±1_F)--reliable,
consistent comfort.
SMultiple OVERRIDE options -- can modify schedule for
a specific period of time (up to 365 days).
SSpeedy same--schedule programming -- no need to copy
mulitple days.
SProgrammable or non--programmable modes.
SRemote setback input for occupancy sensors or
timeclocks.
SVersaSpeedt fan ramping algorithm and fan reset
algorithm
40QAC/38HDR -- 40QAQ/38QR
Fig. 3 – 53DFS250--HW Thermostat
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AHRI* CAPACITY RATINGS
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System
Ty pe
*Air Conditioning, Heating & Refrigeration Institute
Legend
HSPF --- Heating Seasonal Performance Factor
EER --- Energy Efficiency Rating
SEER --- Seasonal Energy Efficiency Ratio
NOTES:
1. Ratings are net values reflecting the effects of circulating fan heat. Ratings are based on: Cooling Standard: 80_F (26.67_C) db, 67_F (19.44_C) wb air
entering indoor unit and 95_F(35_C) db air entering outdoor unit. High Temperature Heating Standard: 70_F (21.11_C) db air entering indoor unit and 47_F
(8.33_C) db, 43_F (6.11_C) wb air entering outdoor unit.
2. Ratings are based on 25 ft. (7.62 m) of interconnecting refrigerant lines.
3. All system ratings are based on fan coil un its operating at high fan speed. Consult Physical Data tables f or airflows at all available fan speeds.
Outdoor SectionIndoor Section
3 8 H D R018 --- --- --- 34 0 QAC 0 2 4 --- --- --- 3172048018,0001311.5N/AN/A
3 8 H D R024 --- --- --- 34 0 QAC 0 2 4 --- --- --- 3172055023,0001311.5N/AN/A
3 8 H D R030 --- --- --- 34 0 QAC 0 3 6 --- --- --- 3390084029,0001312.0N/AN/A
3 8 H D R036 --- --- --- 34 0 QAC 0 3 6 --- --- --- 3390084033,0001311.4N/AN/A
3 8 H D R036 --- --- --- 54 0 QAC 0 3 6 --- --- --- 3390084033,0001311.4N/AN/A
3 8 H D R036 --- --- --- 64 0 QAC 0 3 6 --- --- --- 3390084033,0001311.4N/AN/A
3 8 H D R048 --- --- --- 34 0 QAC 0 4 8 --- --- --- 33900113046,0001311.5N/AN/A
Cooling
3 8 H D R048 --- --- --- 54 0 QAC 0 4 8 --- --- --- 33900113046,0001311.5N/AN/A
3 8 H D R048 --- --- --- 64 0 QAC 0 4 8 --- --- --- 33900113046,0001311.5N/AN/A
3 8 H D R060 --- --- --- 34 0 QAC 0 6 0 --- --- --- 33900160057,0001311.4N/AN/A
3 8 H D R060 --- --- --- 54 0 QAC 0 6 0 --- --- --- 33900160057,0001311.4N/AN/A
3 8 H D R060 --- --- --- 64 0 QAC 0 6 0 --- --- --- 33900160057,0001311.4N/AN/A