40KMC / 38HDF
40KMQ / 38QRF
I n --- C e i l i n g C a s s e t t e D u c t --- F r e e Sp l i t Syst e m
Sizes 018 to 036
Product Data
INDUSTRY LEADING
FEATURES / BENEFITS
AN INEXPENSIVE AND CREATIVE
SOLUTION TO DESIGN PROBLEMS.
The 38HDF(QRF) / 40KMC (KMQ) 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 in--ceiling cassette fan coils are ideal for retrofit or
modernization projects where a false ceiling is available. This
selection of fan coils permits inexpensive and creative solutions to
design problems such as:
The ideal compliment to your ducted system when it is impractical
or prohibitively expensive to use ductwork.
SAdd--ons to current space where the existing system
cannot handle the load.
SSpecial space requirements. like a conference room,
where the load varies.
These compact in--ceiling cassette units require less than 12 inches
(304.8 mm) of false ceiling space and the only part that is seen is
an aesthetically pleasing grille that blends with most decor.
LOW SOUND LEVELS
For applications like conference rooms or libraries where noise is a
concern, the in--ceiling cassette is 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 38HDF/QRF unit is the right choice: The advanced,
horizontal blow--through airflow design distributes air more evenly
over the coil.
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 38HDF/QRF 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 unit provides 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 on an
outside wall.
The compact in--ceiling cassette requires less than 12 inches (304.8
40KMC, KMQ / 38HDF,QRF
mm) of false ceiling and the 40KMC018 unit fits into a 2’ X 2’
(0.6 m X 0.6 m) false ceiling.
These units are fast and easy to install ensuring minimal disruption
to customers in the workplace and making them ideal for retrofit
applications.
SIMPLE SERVICING AND
MAINTENANCE
Saving time and money was a big consideration when designing
these systems.
On the indoor unit, opening the grille will allow a service
technician access to the control box and to remove the cleanable
filters. There is even a plug to drain water from the condensate pan
if it is ever required.
On the outdoor unit, a single panel provides immediate access to
the isolated compressor and control compartment, allowing a
service technician 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 detergent without removing grilles or using fin combs.
BUILT--IN RELIABILITY
Duct--free split system indoor and outdoor units are designed to
provide years of trouble--free operation.
The in--ceiling cassette units include protection against freeze--up
and high evaporator temperatures on heat pumps.
The condensing units and heat pumps are also protected. There is
a 3--minute time delay before the compressor will re--start. An
oversized accumulator, high and low pressure switches (or liquid
line pressure switch on the heat pump), and compressor internal
overload protection will ensure a reliable system that is ideal for
light commercial applications.
INDIVIDUAL ROOM COMFORT
Maximum occupant comfort was key in the design of the
in--ceiling cassette units.
For instance, the indoor unit is equipped with a motorized louver
system that provides optimum air distribution into the conditioned
room. The user can select eight different louver operating modes
to adjust the airflow according to their specific needs.
The air can be distributed from four sides of the unit. This allows
the unit to be installed in the center of the room. For applications
where the unit has to be installed near a wall or in a corner, a
special kit is available to close one or two outlets.
On heat pumps, the controls have built--in features to automatically
compensate for air stratification and avoid cold blow on start--up or
during defrost.
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 in--ceiling cassette units have microprocessor--based controls
to provided the ultimate in comfort and efficiency. Either a user
friendly wireless remote control or a wired controller provides the
interface between user and the unit.
FLEXIBILITY
A variety of accessories simplify the installation process and help
meet system requirements and weather conditions. See table of
available accessories on page 4.
AGENCY LISTINGS
All systems are listed with AHRI (Air Conditioning, Heating &
Refrigeration Institute), and UL.
2
MODEL NUMBER NOMENCLATURE
INDOOR UNIT
Fan Coil U nit
Air--- Cooled Condenser
40KMC3---01
Unit Type
KMC --- C o o l in g On l y
KMQ --- H e a t P u m p
018
Nominal Capacity
018 --- 1 --- 1 / 2 To n s
024 --- 2 To n s
030 --- 2 --- 1 / 2 To n s
036 --- 3 To n s
---
OUTDOOR UNIT
38HDF3---01
Unit Type
HDF --- C o o l i n g O n l y
QRF --- He a t P u m p
018
Nominal Capacity
018 --- 1 --- 1 / 2 To n s
024 --- 2 To n s
030 --- 2 --- 1 / 2 To n s
035 or 036 --- 3 To n s
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.
®
AHRI* CAPACITY RATINGS
System TypeOutdoor SectionIndoor Section
3 8 H D F0 1 8 --- --- --- 34 0 K M C 0 1 8 --- --- --- 3172047017,0001310.9N/AN/A
3 8 H D F0 2 4 --- --- --- 34 0 K M C 0 2 4 --- --- --- 3172069023,6001311.5N/AN/A
Cooling
Cooling with
Electric Heat
Heat Pump
*Air Conditioning, Heating & Refrigeration Institute
Legend
HSPF --- Heating Seasonal Performance Factor
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 units operating at high fan speed. Consult Physical Data tables for airflows at all available fan speeds.
3 8 H D F0 3 0 --- --- --- 340KMC03036 --- --- ---3172091029,0001311.5N/AN/A
3 8 H D F0 3 6 --- --- --- 340KMC03036 --- --- ---3390091036,4001311.0N/AN/A
3 8 H D F0 3 6 --- --- --- 540KMC03036 --- --- ---3390091036,4001311.0N/AN/A
3 8 H D F0 3 6 --- --- --- 640KMC03036 --- --- ---3390091036,4001311.0N/AN/A
3 8 H D F0 1 8 --- --- --- 340KMQ01824 --- ------3172069017,0001311.0N/AN/A
3 8 H D F0 2 4 --- --- --- 340KMQ01824 --- ------3172069022,6001311.0N/AN/A
3 8 H D F0 3 0 --- --- --- 340KMQ03036 --- ------3172091029,0001311.0N/AN/A
3 8 H D F0 3 6 --- --- --- 340KMQ03036 --- ------3390091036,0001311.0N/AN/A
3 8 H D F0 3 6 --- --- --- 540KMQ03036 --- ------3390091036,0001311.0N/AN/A
3 8 H D F0 3 6 --- --- --- 640KMQ03036 --- ------3390091036,0001311.0N/AN/A
3 8 Q R F 0 18 --- --- ---340KMQ01824 ---------3172069017,9001311.016,8007.7
3 8 Q R F 0 24 --- --- ---340KMQ01824 ---------3172069022,6001311.020,8007.7
3 8 Q R F 0 30 --- --- ---340KMQ03036 ---------3390091029,2001311.027,4007.7
3 8 Q R F 0 35 --- --- ---340KMQ03036 ---------3390091033,4001311.032,4007.7
3 8 Q R F 0 35 --- --- ---540KMQ03036 ---------3390091033,4001311.032,4007.7
3 8 Q R F 0 35 --- --- ---640KMQ03036 ---------3390091033,4001311.032,4007.7
Standard CFM
OutdoorIndoorBTUHHSPF
Net
Cooling
BTUH
SEEREER
High Heat
3
STANDARD FEATURES AND ACCESSORIES
Ease Of Installation
Indoor and Outdoor Compact SizeS
Outdoor Unit Wall Mounting KitA
Outdoor Unit Stacking KitA
Built --- in Condensate PumpS
Comfort Features
Microprocessor ControlsS
Automatic Air SweepS
Air Direction ControlS
Auto Restart FunctionS
Cold Blow Protection On Heat PumpsS
Air Stratification CompensationS
Emergency Run ModeS
Auto Changeover on Heat PumpsS
Energy Saving Features
Sleep ModeS
Stop/Start TimerS
Safety And Reliability
3MinuteTimeDelayForCompressorS
Over Current Protection For CompressorS
Crankcase Heater (standard on 38QRF --- 030,035)A
High and Low P ressure Switches on Cooling Only UnitsS
High Pressure Switch and Loss of Charge Switch on Heat
Pump
Indoor Coil Freeze ProtectionS
Indoor Coil High Temperature Protection On Heat PumpsS
40KMC, KMQ / 38HDF,QRF
Condenser High Temperature Protection On Heat PumpsS
Accumulator On Cooling Only and Heat PumpsS
Ease Of Service And Maintenance
Control Box Accessible From Bottom of UnitS
Cleanable FiltersS
DiagnosticsS
Te st ModeS
Liquid Line Pressure TapsS
Suction And Discharge Pressure T apsS
Application Flexibility
208/230 and 460 3 Phase on Size 035 and 036S
Long Lines up to 200 feet (61 m) (accessories required)A
Power Ventilation KitA
Low Ambient Controls ( ---20° F / ---28.9° C)A
Knock--- out to run a duct from an adjacent roomA
Wind BafflesA
Wired or Wireless ControlsA
Zone ManagerA
Warranty
5 ---Year Compressor WarrantyS
1 --- Ye a r P a r t s W a r r a n t yS
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 10
Legend
SStandard
A Accessory
OOptional
INDOOR UNIT ACCESSORIES
Grille
To maximize shipping efficiency, the grille for the in--ceiling
cassette is set up as an accessory.
Air Supply Outlet Obstruction Kit
This kit can be used when up to two discharge outlets need to be
blocked in applications where the unit is installed close to a wall or
a corner.
S
O
Power Ventilation Kit
This kit will allow up to 20% of outside air to be introduced into
the conditioned space.
4" FLEX DUCT
AIRFLOW
INSULATED
LIQUID LINE
INSULATED
SUCTION LINE
WEATHERPROOF
FUSED DISCONNECT
PER NEC
4" FLEX DUCT
POWER
VENTILATION
ACCESSORY
POWER
VENTILATION
A07268
Fig. 1 – Power Ventilation Kit
Remote Control (33MC--UMC)
To provide added flexibility of choosing the user interface method
with the unit, a remote control or wired controller can be ordered.
Remote Control Locking Mount Kit
This kit can be used where there is a concern that the remote
control can be misplaced. This accessory locks the remote in place.
Wired Controller (33MC--URC)
For applications where the use of a wireless remote control is not
desired, the 40KMC/KMQ units can be controlled by means of a
wired , wall--mounted control with an LCD display.
A08432
Fig. 2 – Wall Mounted Control with LCD Display
Room Control Wiring Kit (33MC9005)
Up to six units can be daisy--chained together and controlled by
one wired remote controller. A room control wiring kit is required
for each slave unit.
Zone Manager (33MC--UZM)
For applications where more sophisticated controls are required, a
Zone Manager that permits the connection of up to 32 different
indoor units, divided into a maximum of eight different zones, can
be used. Zone Manager Wiring Kit (33MC9004) is required to
connect different units to the zone manager.
Zone Manager
ZONE 1
ZONE ..
Remote Control
ZONE 8
A08443
Fig. 3 – Zone Manager Connection
4
OUTDOOR UNIT ACCESSORIES
Low Ambient Kit
The kit controls condenser fan cycling using a pressure switch. It is
specifically designed to cycle the outdoor fan--motor in response to
saturated condensing pressure. This device maintains a constant
saturated condensing temperature of 100 _F ± 10 _F (37.78_C ±
5.6_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 cooling
only systems that have the accessory Low Ambient Kit.
Isolation Relay
The Isolation Relay must be used when Low Ambient Kit is used
with heat pumps to ensure the pressure switch is bypassed when
unit is running in heat pump mode.
Liquid Line Solenoid Valve
The Liquid Line Solenoid Valve is an electrically operated shut--off
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 applications. The Crankcase Heater is standard on
38QRF030.
Wind Baffles
The Wind Baffle is a sheet metal shield used to provide improved
unit operation during high winds and is recommended whenever
the low ambient accessory is used.
Stacking Kit
Stacking Kits allow stacking of equally sized units or permit
smaller units to be stacked on top of larger units.
NOTE:THIS KIT CANNOT BE USED WITH HEAT
PUMPS.
TWO UNITS MOUNTED
(IDENTICAL SIZES)
TWO UNITS MOUNTED
(UNEQUAL SIZES)
A06417
Fig.4–StackingKit
Wall Mounting Kit
Wall mount brackets are mounted on the outside of the structure to
raise the unit from ground level, or to mount the unit on a wall
adjacent to a sloping roof. Wall mounts are also useful in areas of
heavy snowfall or where space is at a premium.
40KMC, KMQ / 38HDF,QRF
NOTE: Unit must be at least 6 in. (152.4 mm) from wall.
Fig. 5 – Wall Mounting Kit
D06006
5
DIMENSIONS -- OUTDOOR
FEMALE SWEAT CONN.*
(FIELD PROVIDED AND INSTALLED)
40KMC, KMQ / 38HDF,QRF
UNIT MODELS
38HDF
Unit Size
018018
024,0300240.6
036030,0351.0
NOTE: Dimensions shown in feet-inches. Dimensions in ( ) are millimeters.
Rpm/CFM840/1720840/1720840/1720850/1720850/1720850/1720
Diameter (in) .. No. of Blades18…318…318…324…324…324…3
Motor HP1/81/81/81/41/41/4
Outdoor Coil
Face Area ( sq. ft)5.827.277.2712.112.112.1
No. Rows233222
Fins per inch202020202020
Circuits233666
0KMC, KMQ / 38HDF, QR
High Pre ssure Switch
C u t --- I n ( p s i g )420±25
C u t --- O u t ( p s i g )650±10
Low Pressure Switch
C u t --- I n ( p s i g )45±25
C u t --- O u t ( p s i g )20±5
Fusi ble Plug ° F (° C)210 (99)
Refrigerant Lines
Connection TypeMixed Phase/Suction --- Sweat
Suction /Vapor (in) OD5/83/4
Mixed Phase * (in) OD3/8
Maximum Length** ft (m)200 (61)
MaxLift(FanCoilAbove)ft(m)65 (20)
Max Drop (Fan Coil Below) f t (m)200 (61)
Controls
Control Voltage24 vac
External FinishGray
* Mixed phase line needs to be insulated
** Long Line accessories required beyond 80 ft (24.4 m). Refer to Duct --- Free Split System Long Line Guide for additional information.
Rpm/CFM840/1720840/1720850/3900850/3900850/3900850/3900
Diameter (in) .. No. of Blades18…318…324…324…324…324…3
Motor HP1/81/81/41/41/41/4
Outdoor Coil
Face Area ( sq. ft)5.827.2712.112.112.112.1
No. Rows232222
Fins per inch202020202020
Circuits336666
High Pre ssure Switch
C u t --- I n ( p s i g )420±25
C u t --- O u t ( p s i g )650±10
Low Pressure Switch
C u t --- I n ( p s i g )45±25
C u t --- O u t ( p s i g )20±5
Fusi ble Plug ° F (° C)210 (99)
Refrigerant Lines
Connection TypeM i x e d P h a se --- F l a r e / S u ctio n --- S w ea t
Suction /Vapor (in) OD5/83/4
Mixed Phase * (in) OD3/8
Maximum Length** ft (m)200 (61)
MaxLift(FanCoilAbove)ft(m)65 (20)
Max Drop (Fan Coil Below) f t (m)200 (61)
Controls
Control Voltage24 vac
External FinishGray
* Mixed phase line needs to be insulated
** Long Line accessories required beyond 80 ft (24.4 m). Refer to Duct --- Free Split System Long Line Guide for additional information.
0KMC, KMQ / 38HDF, QR
9
PHYSICAL DATA (CONT.) -- INDOOR UNIT 40KMC
F
Indoor Unit 40KMC018024030036
System Voltage208/230 ---1 ---60208/230---1 --- 60208/230 ---1---60
Rating condition
Not recommended for long ---term operation.
57
(13.9)62(16.7)67(19.4)
COOLING CAPACITIES
COOLING ONLY 38HDF018 WITH 40KMC018
330 / 0.04400 / 0.04450 / 0.04
72
(22.2)57(13.9)62(16.7)67(19.4)
Air Entering Evaporator --- Cfm/BF
Air Entering Evaporator --- Ewb ° F (° C)
(22.2)57(13.9)
72
62
(16.7)67(19.4)72(22.2)
LEGEND
BF--- Bypass Factor
CMP --- Compressor
Edb --- Entering Dry Bulb
Ewb --- Entering Wet Bulb
k W --- T o t a l P o w e r
LDB --- Leaving Dry Bulb
L W B --- L e av i n g We t Bu l b
SHG --- Gross Sensible Capacity (1000 Btu/hour)
TC --- Total Net Cooling Capacity (1000 Btu/h o ur)
TCG --- Gross Cooling Capacity (1000 Btu/hour )
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The SHG is based on 80_F (26.67_C) edb temperature of air
entering indoor coil .
Below 80_F (26.67_C) edb, subtract (corr factor x cfm) from
SHG.
Above 80_F (26.67_C) edb, add (corr factor x cfm) to SHG.
Correction Factor = 1.10 x (1 --- BF) x (edb --- 80).
12
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