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.
Page 2
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
Page 3
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
Page 4
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
Page 5
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
Page 6
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
Page 10
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).
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)
---
13
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).
Rating condition
Not recommended for long ---term operation.
635 / 0.05720 / 0.05875 / 0.05
COOLING CAPACITIES
Air Entering Evaporator --- Cfm/BF
72
(22.2)57(13.9)62(16.7)67(19.4)
Air Entering Evaporator --- Ewb ° F (° C)
72
(22.2)57(13.9)
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)
---
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).
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)
---
15
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).
Rating condition
Not recommended for long ---term operation.
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/hour)
TCG --- Gross Cooling Capacity (1000 Btu/hour )
445 / 0.05530 / 0.05680 / 0.05
COOLING CAPACITIES
HEAT / COOL 38HDF018 WITH 40KMQ01824
Air Entering Evaporator --- Cfm/BF
72
(22.2)57(13.9)62(16.7)67(19.4)
Air Entering Evaporator --- Ewb ° F (° C)
(22.2)57(13.9)
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).
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/hour)
TCG --- Gross Cooling Capacity (1000 Btu/hour )
445 / 0.05530 / 0.05680 / 0.05
72
(22.2)57(13.9)62(16.7)67(19.4)
COOLING CAPACITIES
Air Entering Evaporator --- Cfm/BF
Air Entering Evaporator --- Ewb ° F (° C)
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).
Rating condition
Not recommended for long ---term operation.
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/hour)
TCG --- Gross Cooling Capacity (1000 Btu/hour )
635 / 0.05720 / 0.05875 / 0.05
COOLING CAPACITIES
HEAT / COOL 38HDF030 WITH 40KMQ03036
Air Entering Evaporator --- Cfm/BF
72
(22.2)57(13.9)62(16.7)67(19.4)
Air Entering Evaporator --- Ewb ° F (° C)
(22.2)57(13.9)
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).
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/hour)
TCG --- Gross Cooling Capacity (1000 Btu/hour )
635 / 0.05720 / 0.05875 / 0.05
72
(22.2)57(13.9)62(16.7)67(19.4)
COOLING CAPACITIES
Air Entering Evaporator --- Cfm/BF
Air Entering Evaporator --- Ewb ° F (° C)
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).
Rating condition
Not recommended for long ---term operation.
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/hour)
TCG --- Gross Cooling Capacity (1000 Btu/hour )
445 / 0.05530 / 0.05680 / 0.05
COOLING CAPACITIES
HEAT PUMP 38QRF018 WITH 40KMQ01824
Air Entering Evaporator --- Cfm/BF
Air Entering Evaporator --- Ewb ° F (° C)
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).
Rating condition
Not recommended for long ---term operation.
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/hour)
TCG --- Gross Cooling Capacity (1000 Btu/hour )
445 / 0.05530 / 0.05680 / 0.05
72
(22.2)57(13.9)62(16.7)67(19.4)
COOLING CAPACITIES
Air Entering Evaporator --- Cfm/BF
Air Entering Evaporator --- Ewb ° F (° C)
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).
Rating condition
Not recommended for long ---term operation.
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/hour)
TCG --- Gross Cooling Capacity (1000 Btu/hour )
635 / 0.05720/0.05875/0.05
COOLING CAPACITIES
HEAT PUMP 38QRF030 WITH 40KMQ03036
Air Entering Evaporator --- Cfm/BF
72
(22.2)57(13.9)62(16.7)67(19.4)
Air Entering Evaporator --- Ewb ° F (° C)
(22.2)57(13.9)
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).
Rating condition
Not recommended for long ---term operation.
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/hour)
TCG --- Gross Cooling Capacity (1000 Btu/hour )
635 / 0.05720/0.05875/0.05
72
(22.2)57(13.9)62(16.7)67(19.4)
COOLING CAPACITIES
Air Entering Evaporator --- Cfm/BF
Air Entering Evaporator --- Ewb (° F)
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).
kW ---Total Power Input, includes compressor motor power input, outdoor fan motor power input, and indoor fan motor power input
Cap ---Heating Capacity (100 Btuh), Includes indoor fan motor heat
Unit ° F (° C)
Entering Indoor
PERFORMANCE DATA (CONT.)
Air T emperature
55 (12.8)
60 (15.6)
65 (18.3)
70 (21.1)
75 (23.9)
80 (26.7)
Note: Integrated Capacity is maximum (instantaneous ) capacity less the effect of frost on the outdoor coil and the heat to defrost it.
27
Page 28
APPLICATION DATA
UNIT SELECTION
The in--ceiling cassette units are available as cooling only, cooling
only with electric heat, or heat pumps with electric heat. For most
applications, the cooling load dictates the size selection. Select
equipment to either match or be slightly less than anticipated peak
load. This provides better humidity control, fewer unit cycles, and
better low load performance.
For units used in spaces with high sensible loads, base equipment
selection on unit sensible load, not on total anticipated load to
avoid oversizing the equipment.
UNIT MOUNTING (INDOOR)
Unit leveling -- For reliable operation, units should be level in all
planes.Align and level the unit by adjusting the nuts and
lock--nuts on the threaded hangers.
Clearance -- A minimum of 12 inches (304.8 mm) of clearance is
required in the false ceiling.
Unit location -- Placing the unit in the center of the room will
provide the best air circulation and comfort.
The unit return and discharge should not be obstructed by anything
which may cause unit short cycling or air recirculation.
Support -- Threaded hangers should be used to install the unit and
the structure should provide adequate support for the weight of the
unit.
Installation Template -- Fan coil units are supplied with a
4QKMC, KMQ / 38HDF, QRF
cardboard template to help match the position of the hangers,
refrigerant lines, condensate drain pipe and power supply cable.
UNIT MOUNTING (OUTDOOR)
Unit leveling -- For reliable operation, units should be level in all
planes.
Clearance -- Minimum clearance, as shown in Fig. 7, must be
provided for airflow. The condensing units are designed for
free--blow application. Air inlets and outlets should not be
restricted.
Unit location -- A location which is convenient to installation and
not exposed to strong wind. If unit is exposed to strong winds it is
recommended that a wind baffle accessory be used.
A location which can bear the weight of outdoor unit and where
the outdoor unit can be mounted in a level position.
Mounting Pad -- The minimum mounting pad dimensions are
listed in the following table:
UNIT MODEL
38HDF018, 024, 030
38QRF018, 024
38HDF036
38QRF030, 036
SYSTEMS OPERATING CONDITIONS
Cooling Operating Range
Outdoor
Unit
Indoor
Unit
DB ° F (° C)WB ° F (° C)DB ° F (° C)WB ° F (°C)
125 (51.7)--- ---55 (12.8)--- ---
90 (32.2)74 (23.3)62 (17.0)56 (13)
MAXIMUM MOUNTING PAD DIMENSIONS
f t --- i n . ( m m )
1’--- 11” X 3’ --- 6”
(584.2 X 1066.8)
2 ’ --- 0 ” X 4’ --- 2 ”
(609.6 X 1270)
MaximumMinimum
Heating Operating Range
MaximumMinimum
Outdoor
Unit
Indoor
Unit
DB ° F (° C)WB ° F (° C)DB ° F (° C)WB ° F (°C)
75 (23.9)67 (19.4)17 (---8.3)--- ---
81 (27.2)--- ---62 (17.0)--- ---
Low Ambient Operation
Both cooling only and heat pumps will operate in cooling down to
55_F (12.8_C).
When equipped with a Low Ambient Controller, the unit will
operate down to --20_F (--28.9_C).
For proper operation of cooling only units, a Winter Start Kit
(bypasses the Low Pressure Switch), a Crankcase Heater (prevents
refrigerant migration during compressor--off cycle), and a Wind
Baffle should also be installed.
On heat pumps, a Winter Start Kit will not be required. An
Isolation Relay to bypass the Low Ambient Controller when unit is
in heating mode will be required.
Metering Devices
An Accurator installed at the outdoor unit is used as a metering
device. This requires that both refrigerant lines be insulated. (A
heat pump unit has 2 AccuRater.)
Drain Connections
The in--ceiling cassette is supplied with a pump that is capable of
lifting the water 7.8” (200 mm) above the top of the unit. A
downward sloped condensate drain pipe can be used to dispose of
water.
REFRIGERANT LINES
General refrigerant line sizing:
1. Refrigerant lines should not be buried in the ground. If it is
necessary to bury the lines, not more than 36--in (914 mm)
should be buried. Provide a minimum 6--in (152 mm)
vertical rise to the service valves to prevent refrigerant
migration.
2. Both lines must be insulated. Use a minimum of 1/2--in.
(12.7 mm) thick insulation. Closed--cell insulation is
recommended in all long--line applications.
3. Special consideration should be given to isolating
interconnecting tubing from the building structure. Isolate
the tubing so that vibration or noise is not transmitted into
the structure.
NOTE: Since the same outdoor unit can be matched with
different types of indoor units, it may not have enough
refrigerant charge.Refer to the Physical Data tables to
determine if additional charge is required.
Long Line Applications
The following table indicates the maximum line lengths that can be
used with the high wall systems.
ITEM
Total Piping200 (61)
Max Lift (Fan Coil above)65 (20)
Max Drop (Fan Coil below)200 (61)
For line lengths over 25 ft (7.6 m), .3 oz (.009 kg) of charge should
be added for each additional foot up to the maximum allowed.
For line lengths over 80 ft (24.4 m), certain accessories and
adjustments to the piston sizes are also required.
Refer to the Duct--Free Split Systems Long Line Guide for
additional information.
MAX LENGTH ALLOWED
ft (m)
28
Page 29
CONTROL SYSTEM
The 40KMC,KMQ unit is equipped with a microprocessor controls
to operate the system and provide optimum levels of comfort and
operating efficiency.
The main microprocessor is located in the control box of the fan
coil unit with thermistors located in the fan coil inlet and on the
indoor coil. These thermistors monitor the system operation and
control the operating mode. To change the settings or the modes of
operation, use an accessory wireless remote control, an accessory
wired controller, or an accessory Zone Manager.
The 40KMC,KMQ unit has 5 operating modes:
S Fan Only
S Auto (heat pump models only)
S Heating (heat pump models only)
S Cooling
S Dehumidification (Dry)
FAN ON LY -- In Fan Only mode, the system filters and circulates
the room air without changing the room air temperature.
AUTO -- In Auto mode, the system will automatically select one of
the following operating modes: cooling, heating or fan only based
on the difference between the room temperature and the set point
temperature.
HEATING -- In the Heating mode, the system heats and filters
room air.
COOLING -- In Cooling mode, the system cools, dries and filters
room air.
DEHUMIDIFICATION (DRY) -- in Dehumidification (Dry)
mode, the system dries, filters and slightly cools room temperature.
This mode does not take the place of a dehumidifier.
In addition to the above modes that are selected by using the user
interface accessories, the unit can run in two other modes selected
by the manual button:
S EMERGENCY RUN
S TEST MODE
EMERGENCY mode --is used when the remote control is
misplaced or the batteries in the remote control have expired.
Pushing the EMERGENCY switch under the grille will put the
unit in Auto mode with a predetermined set point (73.4_F/ 23_C) .
TEST mode -- is used when a technician needs to diagnose the
unit for a malfunction. The unit can be set into TEST mode using
either the remote control or sliding the TEST switch under the
grille to the appropriate location. When in TEST mode, the unit
will run in cooling for 30 minutes regardless of the set point.
The microprocessor controls offer additional comfort and economy
features like SLEEP mode, TIMER and AUTO SWEEP. Refer to
the Owner’s Manual for additional details on these features.
USER INTERFACE
Depending on the application, a wired or wireless controller can be
selected to run the unit.
The wireless remote has a range of 26 ft (8 m) when pointed
toward the unit.
For applications that have multiple units, these controls offer
additional flexibility
Two Units In the Same Room Controlled by a
Wireless
If the two units are working independently, the two remotes can be
configured differently so that the signal from one remote does not
interfere with the operation of the other units.
Multiple Units Controlled by One Wired
Controller
When there is an application where all units require the same
setting, up to 6 units can be daisy--chained and controlled by one
wired remote control. Total length of connecting wire can be up to
500 ft (152.4 m).
Zoning
For applications that require zoning, the Zone Manager is offered
as an accessory. This will allow up to 32 units to be connected in
up to 8 zones. Each zone can be programmed for 7 days with each
dayhaving4periods.
Electric Heat
The 40KMQ has a 3 Kw electric heater factory installed. when the
40KMQ is matched with a heat pump outdoor unit, the electric
heater is supplementary.
When the heat generated from the heat pump cannot meet the
demands of the load, the electric heater is activated until the set
point is satisfied.
When the 40KMQ is matched with a cooling only outdoor unit the
electric heater is activated when the system is in heating mode.
Air Distribution
The in--ceiling cassette units are very versatile with many features
that make them very flexible.
Cooling an adjacent room -- The 40KMC and 40KMQ units are
supplied with pre--punched knockouts that can be used to cool and
heat an adjacent room. The amount of CFM that can be channeled
to an adjacent room is dependent on the amount of static in the
field supplied ductwork. Use the chart in Fig. 9 to determine the
CFM.
Remote
Supply air duct to adjacent room
4QKMC, KMQ / 38HDF, QRF
0.18
0.16
erusserp citats lanretxE
0.14
(in.wg)
0.12
0.1
0.08
0.06
0.04
0.02
NOTE: When two louvers are closed, the fresh airflow towards the adjacent room
is 50% higher than when one louver is closed (with equal static external pressure).
0
0
40KMC018,024
40KMQ01824
50
Fig. 9 – Pressure Drop for Conditioned Air Supply to an Adjacent Room: One Louver Closed
40KMC,KMQ 03036
100
Airflow (cfm)
150200
29
250
A07178
Page 30
Outside Air -- Up to 20% outside air can be introduced to the
40KMC or 40KMQ through pre--punched knockouts.
If the 40KMC or 40KMQ is installed close to an outside wall,
some outside air can be introduced by running field supplied
ductwork to the unit. the amount of outside air that can be
introduced is determined by using the chart in Fig. 9.
If the cassette is installed in the middle of a room and is not close to
an outside wall, a power ventilation kit can be used to overcome
the static pressure in the ductwork and allow the needed CFM.
For applications that are very sound sensitive, it is recommended to
limit the fresh air intake to 10% when using a power ventilation
kit.
Air Discharge -- The 40KMC and 40KMQ units have four
discharge outlets that are equipped with motorized louvers for
better comfort. The user has three operating choices with the
louvers
1. AUTO -- The position of the louver is determined by the
mode in which the unit is running.
2. CONTINUOUS -- Louvers move continuously
3. STATIONARY -- Louver position is determined by the
user.
Air can be discharged from 4, 3, or 2 louvers. An accessory kit is
required to block the discharge from each louver.
Air Throw Data -- The following table shows the air throw data of
the 40KMC and 40KMQ units. The numbers shown indicate the
maximum distances reached by the airflow with a speed equal to or
greater than .66 ft/sec (0.2 m/sec) with louvers in the cooling
position.
AIR THROW DATA*
Model
4 0 K M C 0 1 8 --- --- --- 315.75 (4.8)17.4 (5.3)19.0 (5.8)
4 0 K M C 0 2 4 --- --- --- 39.8 (3.0)11.5 (3.5)13.0 (4.0)
NOTES: Te s t e d i n a c c o r da n c e w i t h AR I S t a n da r d 2 7 0 --- --- --- 9 5 a n d A R I 3 5 0 ( n o l i s te d i n A R I ) .
Sound Power
dBA
HighMediumLow
Sound Pressure
dBA
Sound Power
dBA
Sound Pressure
dBA
Sound Power
dBA
Sound Pressure
dBA
30
Page 31
WIRING
The indoor and outdoor units have their own power supply (single point connection on units with electric heat). Low voltage wires run
between the indoor and outdoor units. Two wires are required for cooling only systems and seven wires are required for heat pumps.
*Permissible limits of the voltage r ange at which unit will operate satisfactorily.
FLA--- Fu l l L o a d Amp s
MCA--- Minimum Cir cuit Amps per NEC Section 430 ---24
NEC--- National Electrical Code
RLA--- RatedLoadAmps(Compressor)
V --- PH --- H z
LEGEND
Range
Min.MaxFLA
FAN
Motor
Power
(Watts)
Condensate
Pump FLA
1. In compliance with NEC requirements for multi--- motor and combination
load equipment (refer to NEC Articles 430 and 440), the over --- current
protective device for the unit s hall be fuse or equipped with a breaker.
2. Motor RLA values are established in accordance with UL (Underwriters
Laboratories) Standard 465.
Louver
Motor
FLA
Electric
Heaters
kWFLA
NOTES:
®
AMPS
MIN
CKT
Power
FUSE/
CKT
BKR
AMPS
31
Page 32
4QKMC, KMQ / 38HDF, QRF
3. Compressor and fan motors are protected by internal thermal overloads.
Fig. 10 – 40KMC / 38HDF Cooling Only System Wiring Diagram
50057
32
Page 33
4QKMC, KMQ / 38HDF, QRF
Fig. 11 – 40KMQ / 38HDF Heat/Cool System Wiring Diagram with Electric Heaters
3. Compressor and fan motors are protected by internal thermal overloads.
50058
33
Page 34
4QKMC, KMQ / 38HDF, QRF
3. Compressor and fan motors are protected by internal thermal overloads.
Fig. 12 – 40KMQ / 38QRF Heat Pump System Wiring Diagram with Electric Heaters
50059
34
Page 35
GUIDE SPECIFICATIONS
IN--CEILING CASSETTE
DUCT--FREE UNITS
Carrier Model Number: 40KMC/40KMQ
Size Range: 1--1/2 to 3 Ton Nominal Cooling Capacity
1--1/2 to 3 Ton Nominal Heating Capacity
PART 1 -- GENERAL
1.01 System Description
Indoor, in--ceiling mounted, direct--expansion fan coils are matched
with cooling only or heat pump outdoor unit .
1.02 Agency Listings
Unit shall be rated per ARI Standards 210/240 and listed in the
ARI directory as a matched system. Units shall be certified by UL
and CSA.
1.03 Delivery, Storage, And Handling
Units shall be stored and handled per unit manufacturer’s
recommendations.
1.04 Warranty
1--year parts limited warranty.
PART 2 -- PRODUCTS
2.01 Equipment
A. General:
Indoor, direct--expansion, low profile (12 in./ 304.8 mm) in--ceiling
fan coil. Unit shall be complete with cooling/heating (heat pump
systems only) coil, fan, fan motor, piping connectors, condensate
pump, and hanging brackets.
B. Unit Cabinet:
Cabinet shall be constructed of zinc--coated steel. Fully insulated
discharge and inlet grilles shall be attractively styled, high--impact
polystyrene.
Grille shall have hinges and can be opened to obtain access to the
cleanable filters, indoor fan motor and control box. Adjacent room
cooling as well as fresh air intake shall be provided by simple
knock--outs in a cabinet side panel.
C. Fans:
1. Fan shall be centrifugal direct--drive blower type with air
intake in the center of the unit and discharge at the
perimeter. Automatic, motor--driven vertical air sweep shall
be provided standard.Automatic motor--driven louvers
shall be provided standard and shall be adjustable for 2, 3 or
4--way discharge.
2. Air sweep operation shall be user selectable.
D. Coil:
Coil shall be copper tube with aluminum fins and galvanized steel
tube sheets. Fins shall be bonded to the tubes by mechanical
expansion and specially coated for enhanced wet--ability. A drip
pan under the coil shall have a factory installed condensate pump
and drain connection for hose attachment to remove condensate.
E. Motors:
Motors shall be open drip--proof, permanently lubricated ball
bearing with inherent overload protection. Fan motors shall be
3--speed.
F. C on tro ls:
Controls shall consist of a microprocessor--based control system
which shall control space temperature, determine optimum fan
speed, and run self diagnostics. the temperature control range shall
be from 62_Fto84_F (16.67_C to 28.89_C).
User interface with the unit shall be accomplished through an
accessory wireless remote control (can be configured for _For_C),
or an accessory wired controller or an accessory Zone Manager.
User interface with unit shall be accomplished through either a
wireless remote control or a wired control or zone manager.
The unit shall have the following functions as a minimum:
1. An automatic restart after power failure at the same
operating conditions as at failure.
2. A timer function to provide a minimum 24--hour timer
cycle for system Auto Start/Stop.
3. Temperature--sensing controls shall sense return air
temperature.
4. Indoor coil freeze protection.
5. Automatic air sweep control to provide on or off activation
of air sweep louvers.
6. Dehumidification mode shall provide increased latent
removal capability by modulating system operation and set
point temperature.
7. Fan--only operation to provide room air circulation when no
cooling is required.
8. Diagnostics shall provide continuous checks of unit
operation and warn of possible malfunctions. Error
messages shall be displayed at the unit.
9. Fan speed control shall be user--selectable: high, medium,
low, or microprocessor controlled automatic operation
during all operating modes.
10. Automatic heating--to--cooling changeover in heat pump
mode. Control shall include deadband to prevent rapid
mode cycling between heating and cooling.
11. Indoor coil high temperature protection shall be provided to
detect excessive indoor discharge temperature when unit is
in heat pump mode.
12. Cold blow prevention on heat pump units.
13. Automatic compensation for air stratification on heat pump
units.
G. Filters:
Unit shall have filter track with factory--supplied cleanable filters.
H. Electric Heat
40KMQ units shall have 3kw electric heaters factory installed to
supplement the heating capacity by heat pump when required
I. Electrical Requirements:
Indoor units shall be 208/230--1--60 and require their own power
supply. Units with electric heat shall be single power supply. Only
control wiring shall run between the indoor and outdoor units.
J. Operating Characteristics:
The 40KMC/KMQ, when matched with the appropriate outdoor
section, shall have a minimum listed SEER (seasonal energy
efficiency ratio) of 13 at ARI conditions, and a minimum HSPF of
7.7.
K. Special Features (Accessories):
1. User Interface can be accomplished with:
-- Wireless controller
-- Wired control shall be capable of controlling one unit or
up to six units daisy--chained together.
-- Zone controller
The zone control can provide the capability of connectingupto32
units into one or up to 8 independent zones. Each zone can be
programmed for 7 days with each day having up to 4 periods.
2. Power ventilation kit shall be available to allow up to 20%
outside air to be provided.
4QKMC, KMQ / 38HDF, QRF
35
Page 36
GUIDE SPECIFICATIONS
HORIZ. DISCHARGE OUTDOOR UNITS
Carrier Model Number: 38HDF/38QRF
Size Range: 1--1/2 to 3 Ton Nominal Cooling Capacity /1--1/2 to
3 Ton Nominal Heating Capacity
PART 1 -- GENERAL
1.01 System Description
A. Outdoor air--cooled split system compressor sections suitable
for on--the--ground, rooftop, wall hung or balcony mounting.
Units shall consist of a scroll compressor, an air--cooled coil,
propeller--type blow--through outdoor fan, reversing valve
(HP), accumulator, Accurator metering device(s), and control
box. Units shall discharge air horizontally as shown on the
contract drawings. Units shall function as the outdoor
component of an air--to--air cooling only, or heat pump system.
B. Units shall be used in a refrigeration circuit matched to
duct--free cooling only or heat pump fan coil units.
1.02 Agency Listings
A. Unit construction shall comply with ANSI/ASHRAE 15, latest
revision, and with the NEC.
B. Units shall be evaluated in accordance with UL standard 1995.
C. Units shall be listed in the CEC directory.
D. Unit cabinet shall be capable of withstanding 500--hour salt
spray test per Federal Test Standard No. 141 (method 6061).
E. Air--cooled condenser coils shall be leak tested at 573 psig.
1.03 Delivery, Storage, And Handling
4QKMC, KMQ / 38HDF, QRF
Units shall be shipped in one piece and shall be stored and handled
per unit manufacturer’s recommendations.
Factory assembled, single piece, air--cooled outdoor unit.
Contained within the unit enclosure shall be all factory wiring,
piping, controls, and the compressor.
B. Unit Cabinet:
1. Unit cabinet shall be constructed of galvanized steel,
bonderized and coated with a baked--enamel finish on
inside and outside.
2. Unit access panels shall be removable with minimal screws
and shall provide full access to the compressor, fan, and
control components.
3. Outdoor compartment shall be isolated and have an acoustic
lining to assure quiet operation.
4. Compressor compartment shall be isolated to allow
performing diagnostics while the system is running.
C. Fans:
1. Outdoor fans shall be direct--drive propeller type, and shall
discharge air horizontally. Fans shall blow air through the
outdoor coil.
2. Outdoor fan motors shall be totally--enclosed, single phase
motors with class B insulation and permanently--lubricated
bearings. Motor shall be protected by internal thermal
overload protection.
3. Shaft shall have inherent corrosion resistance.
4. Fan blades shall be metallic and shall be statically and
dynamically balanced.
5. Outdoor fan openings shall be equipped with PVC coated
metal protective grille over fan.
D. Compressor:
1. Compressor shall be fully hermetic scroll type.
2. Compressor shall be equipped with oil system, operating oil
charge, and motor. Internal overloads shall protect the
compressor from over--temperature and over--current.
3. Motor shall be NEMA rated class F, suitable for operation
in a refrigerant atmosphere.
4. Compressor assembly shall be installed on rubber vibration
isolators.
5. Compressors shall be available in single--phase (sizes
018--036) and three--phase (sizes 035 and 036).
E. Outdoor Coil:
Coil shall be constructed of aluminum fins mechanically bonded to
seamless copper tubes, which are cleaned, dehydrated, and sealed.
F. Refrigeration Components:
Refrigerant circuit components shall include brass external liquid
line service valve with service gage port connections, suction line
service valve with service gage connection port, service gage port
connections on compressor suction and discharge lines with
Schrader type fittings with brass caps, accumulator, reversing
valve.
G. Controls and Safeties:
Operating controls and safeties shall be factory selected, assembled,
and tested. The minimum control functions shall include the
following:
1. Controls:
a. A time delay control sequenceis provided standardthrough
the fan coil board.
b. Automatic outdoor--fan motor protection.
2. Safeties:
a. Diagnostics provided by matched indoor unit.
b. Compressor motor current and temperature overload
protection.
c. Outdoor fan failure protection (High Pressure Switch).
d. Low pressure protection.
e. Fusible plug to vent refrigerant safely in case of a fire.
H. Electrical Requirements:
1. All sizes shall operate on single--phase, 60 Hz power at
208/230V or on three--phase, 60 Hz power at either
208/230 or 460 (for size 035 and 036 units).
2. Unit control voltage to the indoor fan coil shall be 24 volts
AC.
3. All power and control wiring must be installed per NEC
and all local electrical codes.
I. Refrigerant Line Lengths:
1. The unit shall be capable of 200 ft (61 m) maximum piping,
a maximum lift (fan coil above) of 65 ft (19.8 m) and a
maximum drop (fan coil below) of 200 ft (61 m).
Accessories will be required to achieve these lengths.
J. Special Features (Field Installed):
1. Low--Ambient Kit: Control shall regulate fan--motor cycles
in response to saturated condensing temperature of the unit.
The control shall be capable of maintaining a condensing
temperature of 100_F ± 10_F (37.78_C ± 5.5_C) with
outdoor temperatures to --20_F (--28.9_C). Installation of kit
shall not require changing the outdoor fan motor.