38MG / 40MA / 40MB
Multi- Zone Ductless Split System
Size 18k, 27k, 36k and 48k
Product Data
INDUSTRY LEADING
FEATURES / BENEFITS
AN INEXPENSIVE AND CREATIVE
SOLUTION TO DESIGN PROBLEMS.
The 38MG / 40MA / 40MB ductless inverter driven multi- zone
system provides individual comfort control for up to 5 separate
zones. Two, three, four or five space-saving cassette, floor console,
high wall, or ducted fan coils can be matched with one outdoor
heat pump. The indoor fan coils are connected to the outdoor unit
by refrigerant tubing and wires.
The different styles of indoor units can be mounted in several
locations to accommodate the application. This selection of fan
coils permits inexpensive and creative solutions to design problems
such as:
SWhen adding air conditioning to spaces that are heated
by hydronic or electric heat and have no ductwork.
SHistorical renovations or any application where
preserving the look of the original structure is essential.
SCommercial add- on jobs where the existing air
conditioning system cannot be stretched.
These compact indoor fan coil units take up very little space in the
room and do not obstruct windows. The fan coils are attractively
styled to blend with most room decors.
Advanced system components incorporate innovative technology
to provide reliable cooling and heating performance at low sound
levels.
INVERTER TECHNOLOGY
The inverter driven compressor is designed to run at various input
power frequencies (Hz) which controls the motor speed of the
compressor.
Even Temperature – The control package, including the inverter,
monitors outdoor and indoor temperatures as they relate to the
selected indoor set point and adjusts the speed of the compressor to
match the load and keep the system operating continuously rather
than cycling and creating temperature swings. This translates to
higher comfort levels for the occupants.
Rapid Pull Down/Warm-Up – Comfort is increased by the
ability to the inverter system to ramp up the compressor speed
enabling the system to reach the user selected room temperature set
point quicker.
Humidity Control – Running the system for longer periods and
continuously varying the compressor speed will enhance the
humidity control.
INDIVIDUAL ROOM COMFORT
Maximum comfort is provided because each space can be
controlled individually based on the usage pattern. The air sweep
feature provided permits optimal room mixing to eliminate hot and
cold spots for the occupant comfort.
LOW SOUND LEVELS
When noise is a concern, ductless 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 38MG unit is the right choice. With the inverter
technology, these units run at lower speeds most of the time
resulting in reduced sound levels.
FAST INSTALLATION
This compact ductless split system is simple to install. A mounting
bracket is included with the indoor units and only wires and piping
need to be run between the indoor and outdoor units. These units
are fast and easy to install ensuring minimal disruption to
customers in homes or workplace. This makes the 38MG / 40MA /
40MB systems the equipment of choice for retrofit applications.
SIMPLE SERVICING AND
MAINTENANCE
Removing the top panel of the outdoor unit provides immediate
access to the control compartment, providing the service technician
access to the diagnostic LEDs to facilitate the troubleshooting
process. In addition, the draw- thru design of the outdoor unit
means that dirt accumulates on the outside surface of the coil. Coils
can be cleaned quickly from the inside using a pressure hose and
detergent.
On the indoor units, service and maintenance expense is reduced
due to the permanent easy to clean filters. Also, error codes are
displayed on the front panel to alert the user to certain system
malfunctions
BUILT- IN RELIABILITY
Ductless split system indoor and outdoor units are designed to
provide years of trouble- free operation.
Both the indoor and outdoor units are well protected. Wheneve r the
micr opr ocessor detects abnormal conditions, the unit will stop and an
error code is displa yed.
Inverter systems provide additional reliability due to soft start. This
refers to the ability of the inverter to start the compressor motor
using reduced voltage and reduced current. This feature is
beneficial from an electrical standpoint (eliminates current spikes)
as well as an overall reliability standpoint due to reduced stress on
all associated system components.
Ductless systems are inherently economical to operate. Individual
rooms are heated or cooled only when required, and since the air is
delivered directly to the space, there is no need to use additional
energy to move the air in the ductwork. This economical operation
is enhanced further when the inverter system output matches the
load resulting in a more efficient system.
EASY- TO-USE CONTROLS
The multi-zone systems have microprocessor-based controls to
provide the ultimate in comfort and efficiency. The user friendly
wired and wireless remote controls provide the interface between
the user and the unit.
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 or wall openings. In addition, since the 38MG
can be installed close to an outside wall, coils are protected from
vandals and severe weather.
CONDENSATE PUMP
A condensate pump accessory is available (High Wall and Floor
Console) to provide installation flexibility for those applications
where gravity cannot be used to dispose of the condensate.
Factory installed condensate pump on the Ducted and Cassette fan
coils provides installation flexibility.
AGENCY LISTINGS
All systems are listed with AHRI (Air conditioning, Heating, and
Refrigeration Institute) and are ETL certified per UL 1995
standard.
2
MODEL NUMBER NOMENCLATURE
40MB309
40 = FAN COIL UNIT
INDOOR UNIT
BQD
--
MA =HIGHWALL
MB = CASSET TE, DUCTED, FLOOR CONSOLE
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.
NOT USED
UNIT TYPE
- = OUTDOOR UNIT
3
STANDARD FEATURES AND ACCESSORIES
Ease of Installation
Mounting BracketS
Low Voltage ControlsS
Comfort Features
Microprocessor ControlS
Wired Remote Control for High Walls, Cassette and Floor ConsoleA
Wired Remote Control for DuctedS
Wireless Remote ControlS
Rapid Cooling and HeatingS
Automatic Air SweepS
Cold Blow PreventionS
Continuous FanS
Auto Restart FunctionS
Auto Ch angeoverS
Indoor Coil Freeze ProtectionS
3MinuteTimeDelayForCompressorS
High Compressor Discharge TemperatureS
Low Voltage ProtectionS
Compressor Overload ProtectionS
Compressor Over Current ProtectionS
IPM Modul e ProtectionS
Ease of Service
Cleanable FiltersS
DiagnosticS
Error Messages Displayed On Front PanelS
Application Flexibility
Condensate Pumps For High Walls and Floor ConsoleA
Condensate Pump For Cassette and DuctedS
Crankcase HeaterS
Legend
S Standard
A Accessory
INDOOR UNITS
On high wall and floor console fan coils, the condensate pump
accessory is recommended when adequate drain line pitch cannot
be provided, or when the condensate must move up to exit.
The pump has a lift capability of 12 ft (3.6 m) on the discharge side
if the pump is mounted in the fan coil or 6 ft (1.8 m) on the suction
side if the pump is remote mounted.
OUTDOOR UNITS
Standard on all unit sizes. Heater clamps around compressor oil
stump.
Fig. 1 – Condensate Pump Accessory
4
COMBINATION TABLE
Indoor UnitNominal Unit BtuhIndoor Model NumberOutdoor Model Number
High Wall
Cassette
Ducted
Floor Console
Indoor UnitNominal Unit BtuhIndoor Model NumberOutdoor Model Number
High Wall
Cassette
Ducted
Floor Console
Indoor UnitNominal Unit BtuhIndoor Model NumberOutdoor Model Number
Outdoor Model38MGQC18---338MGQD27---338MGQF36---338MGQF48---3
Max Number of Zones2345
Energy StarYESYESNOYES
Cooling Rated CapacityBtu/h18,00025,00036,00042,000
Cooling Cap. RangeMin - MaxBtu/h8,500~20,0009,000~30,0009,500~37,00010,000~50,000
SEER21221820
EER12.512.58.812.5
Heating RatedCapacityBtu/h18,50032,00036,00049,000
Heating Cap.Range Min - MaxBtu/h9,000~22,0009,500~32,00010,000~39,00010,500~55,000
HSPF9.69.610.010.0
Cooling Rated CapacityBtu/h17,50026,00035,00042,000
Cooling Cap. RangeMin - MaxBtu/h8,500~20,0009,000~30,0009,500~36,50010,000~50,000
SEER19.519.2516.519
EER12.5118.511.75
Heating RatedCapacityBtu/h18,25032,00036,00050,000
Heating Cap.Range Min - MaxBtu/h9,000~22,0009,500~32,00010,000~39,00010,500~55,000
HSPF9.19.29.79.8
Cooling Rated CapacityBtu/h17,00027,00034,00042,000
Cooling Cap. RangeMin - MaxBtu/h8,500~20,0009,000~30,0009,500~36,00010000~50000
SEER1816.51518
EER12.59.58.211
Heating RatedCapacityBtu/h18,00032,00036,00051,000
Heating Cap.Range Min - MaxBtu/h9000~220009500~3200010,000~39,00010,500~55,000
HSPF8.58.89.39.5
Cooling Outdoor DB Min - Max°F4~1224~1224~1224~122
Heating Outdoor DB Min - Max°F4~864~864~864~86
Total Piping LengthFt.98147196245
Piping to furthestFCUFt.98989898
Drop (OD above ID)Ft.32323232
Lift (OD below ID)Ft.32323232
Pipe ConnectionSize - LiquidIn.1/4*21/4*31/4*41/4*5
Pipe ConnectionSize - SuctionIn.3/8*23/8*31/2+3/8*31/2*2+3/8*3
Voltage, Phase,CycleV/Ph/Hz208/230-1-60208/230-1-60208/230-1-60208/230-1-60
Power SupplyIndoor unit powered from outdoor unit
MCAA.15182729
MOCP - Fuse RatingA.20304550
Unit WidthIn.33.337.237.236.9
Unit HeightIn.27.631.931.953.9
Unit DepthIn.12.615.615.615.4
Net WeightLbs.114.6154.8169.8255.5
AirflowCFM1,3902,1302,1303,500
Sound PressuredB(A)60636364
16
PHYSICAL DATA - INDOOR
Size9121824
Model40MAQB09B--340MAQB12B--340MAQB18B--340MAQB24B--3
Unit WidthIn.32.932.93946.7
Unit HeightIn.111112.413.4
Unit DepthIn.7.87.88.610.2
Net WeightLbs.19.219.226.540.1
High Wall
Indoor Unit
Cassette
Indoor Unit
Pipe ConnectionSize - LiquidIn.1/41/41/43/8
Pipe ConnectionSize - SuctionIn.3/81/21/25/8
Number of Fan Speeds4444
Airflow (lowest to highest)CFM210/290/360/380210/300/360/380310/450/650/680520/620/780/870
Sound Pressure (lowestto highest)dB(A)27/34/4227/34/4233/40/4639/45/50
Air throw DataFt.23233036
Wireless Remote Controller (°F/°CConvertible)Standard
Wired RemoteController (°F/°C Convertible)Optional
Size91218
Model40MBQB09C--340MBQB12C--340MBQB18C--3
Unit WidthIn.22.422.422.4
Unit HeightIn.10.210.210.2
Unit DepthIn.22.422.422.4
Net WeightLbs.35.335.339.7
Pipe ConnectionSize - LiquidIn.1/41/41/4
Pipe ConnectionSize - SuctionIn.3/81/21/2
Number of Fan Speeds333
Airflow (lowest to highest)CFM260/320/380280/340/400290/350/420
Sound Pressure (lowestto highest)dB(A)34/39/4436/39/4246/48/50
Wireless Remote Controller (°F/°CConvertible)Standard
Wired RemoteController (°F/°C Convertible)Optional
Ducted
Indoor Unit
Floor
Console
Indoor Unit
Size9121824
Model40MBQB09D--340MBQB12D--340MBQB18D--340MBQB24D--3
Unit WidthIn.27.627.636.236.2
Unit HeightIn.8.38.38.310.6
Unit DepthIn.25252525
Net WeightLbs.39.939.950.757.3
Pipe ConnectionSize - LiquidIn.1/41/41/43/8
Pipe ConnectionSize - SuctionIn.3/81/21/25/8
Number of Fan Speeds3333
Airflow (lowest to highest)CFM290/340/380290/340/380400/440/480590/650/810
Sound Pressure (lowestto highest)dB(A)30/33/3630/34/3834/37/3843/45/48
Max Static PressureIn.WG.0.18 0.18 0.40 0.400.18 0.18 0.40 0.400.18 0.18 0.40 0.400.18 0.18 0.40 0.40
Wireless Remote Controller (°F/°CConvertible)Standard
Wired RemoteController (°F/°C Convertible)Standard
Size912
Model40MBQB09F--340MBQB12F--3
Unit WidthIn.27.627.6
Unit HeightIn.8.38.3
Unit DepthIn.23.623.6
Net WeightLbs.32.432.4
Pipe ConnectionSize - LiquidIn.1/41/4
Pipe ConnectionSize - SuctionIn.3/81/2
Number of Fan Speeds33
Airflow (lowest to highest)CFM220/250/280220/250/280
Sound Pressure (lowestto highest)dB(A)37/38/4134/41/45
Wireless Remote Controller (°F/°CConvertible)Standard
Wired RemoteController (°F/°C Convertible)Optional
17
COOLING PERFORMANCE
CoolingOutdoor conditions (DB)
Model
18
27
36
48
Indoor Conditions DB
DBWB
69.8F(21C)59F(15C)
80.6F(27C)66.2F(19C)
69.8F(21C)59F(15C)
80.6F(27C)66.2F(19C)
69.8F(21C)59F(15C)
80.6F(27C)66.2F(19C)
69.8F(21C)59F(15C)
80.6F(27C)66.2F(19C)
75F(24C)85F(29.5C)95F(35C)105F(40.5C)
TC18.0718.7417.2213.28
SC15.0015.3714.6413.01
Input1.171.541.721.88
TC20.7521.4820.4316.42
SC15.9716.3315.9314.62
Input1.161.561.761.59
TC23.9927.2024.5519.31
SC22.6724.0822.5619.31
Input1.502.422.672.39
TC27.4031.7829.9023.85
SC23.7225.062.5122.94
Input1.512.522.832.51
TC28.8032.6930.2523.15
SC26.3228.1827.0223.15
Input2.173.453.812.99
TC33.4738.1136.6028.42
SC28.8330.5532.9426.99
Input2.213.573.943.25
TC44.0642.0438.9534.05
SC37.8936.5735.4433.37
Input3.323.784.194.45
TC46.8849.7445.9941.31
SC40.3243.2741.8540.07
Input2.643.904.334.61
LEGEND
DB --- Dr y Bulb
WB --- Wet Bulb
TC --- Total Net Cooling Capacity (1000 Btu/hour)
SC --- Sensible Capacity (1000 Btu/hour)
Input --- Total Power (kW)
HEATING PERFORMANCE
Model
18
27
36
48
LEGEND
DB --- Dr y Bulb
TH --- Total Net Heating Capacity (1000 Btu/hour)
Input --- Total Power (kW)
Min. Piping Lengthft (m)10 (3)10 (3)10 (3)10 (3)
Standard Piping Lengthft (m)25 (7.5)25 (7.5)25 (7.5)25 (7.5)
Max. outdoor-indoor height difference
(OU higher than IU)
Max. outdoor-indoor height difference
(IU higher than OU)
Max. Piping Length with no additional refrigerant
Piping
Refrigerant
charge
Max. Length for one indoor unitft (m)65.6(20)82(25)98(30)98(30)
Max. height different between indoor unitsft (m)32(10)32(10)32(10)32(10)
Total Maximum Piping LengthFt. (m)98(2*15=30)147(3*15=45)196(4*15=60)245(5*15=75)
Additional refrigerantcharge
(between Standard– Max piping length)
Gas Pipein3/8*23/8*31/2+3/8*31/2+3/8*3
Liquid Pipein1/4*21/4*31/4*41/4*5
Refrigerant TypeR410AR410AR410AR410A
Heat Pump Models Charge AmountLbs (kg)4.19 (1.9)6.17 (2.8)7.94 (3.6)10.14 (4.6)
APPLICATION DATA
UNIT SELECTION
When selecting a variable speed system match the system capacity
range to the anticipated load range. Since a variable speed system
can accommodate a wide range of loads it is important to
understand the percentage of time that the system will be required
to run at the both the maximum and the minimum load points. This
differential is most evident when a residential application is
compared with a commercial application.
ft (m)32(10)32(10)32(10)32(10)
ft (m)49(15)49(15)49(15)49(15)
ft (m)24.6(7.5)24.6(7.5)24.6(7.5)24.6(7.5)
Oz/ft (g/m)0.16(15)0.16(15)0.16(15)0.16(15)
Generally there will be more load diversification in the residential
application (shifting from low load to high load).
The commercial application will tend to be more steady during the
normal day time hours, and will go to low load levels after normal
business hours. If it is anticipated that the system will be required
to run at the maximum load point for the majority of the time, the
next larger system capacity should be selected.
The Application Table on page 20 is a guideline for selecting the
proper size for the application.
Mounting Bracket – The fan coil units are furnished with
mounting brackets or dedicated mounting holes to hang the unit.
Support – Adequate support must be provided to handle the
weight of all fan coils. Refer to the Physical Data section for
weights, and the base unit dimensional drawings.
Unit Leveling – For reliable operation, units should be level in all
planes.
Clearances – Minimum clearance as shown in Fig. 13- 14.
Unit location – Select a location which will provide the best air
circulation for the room. These units should be positioned as high
to have adequate air circulation. The unit return and discharge
should not be obstructed by furniture, curtains, or anything which
may cause the unit to short cycle or air to recycle.
UNIT MOUNTING (OUTDOOR)
Support – A location which can bear the weight of outdoor unit.
Refer to the Physical Data section for weights, and base
dimensional drawings.
Unit Leveling – For reliable operation, units should be level in all
planes.
Clearances – Minimum clearances, as shown in Fig. 14, must be
provided for airflow. The outdoor units are designed for free- blow
applications. Air inlets and outlets should not be restricted.
Unit location – A location which is convenient to installation and
not exposed to strong wind.
SYSTEM OPERATING CONDITIONS
Cooling operating range:
Operating Range
Min / Max °F (°C)
CoolingHeating
Outdoor DB4/ 122 (-20 / 50)4 / 86 (-20 / 30)
Indoor DB63 / 90 (17 / 32)32 / 86 (0 / 30)
Indoor WB59/ 84 (15 / 29)
Heating operating range:
Non-Operating Temperature Range
Min / Max °F (°C)
Indoor/Outdoor DB32 / 86 (0 / 30)
METERING DEVICES
The outdoor unit has multiple electronic expansion valves to
manage the refrigerant flow to the different indoor fan coils
connected to that unit.
REFRIGERANT LINES
General Guidelines:
1. The outdoor units are shipped with full charge of R- 410A
refrigerant. All charges, line sizing, and capacities are based
on runs of 25 ft (7.6 m). For runs over 25 ft (7.6m), consult
long- line section on this page for proper charge
adjustments.
2. Refrigerant line s should not be buried in the ground. If it is
necessary to bury the lines, not more than 36 inche s (914 mm)
should be buried. Provide a mini mum of 6 inch (152 mm)
vertical rise to se r vice valves to preve nt refrigerant migration.
3. Both lines must be insulated. Use a minimum of ½-inch
(12.7 mm) thick insulation. Closed-cell insulation is
recommended in all long - line applications.
4. 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.
Long Line Applications:
SNo change in line sizing is required.
Total Line Length
ftper indoor unit
Unit
Size
18
2782
48
MinMax
10
66
980.16
Additional Charge, oz/ft.
10 - 25
(3 - 8)
None0.16
ft (m)
>25 - 66
(8 - 20)
>66 - 82
(20 - 25)
0.1636
>82 - 98
(25 - 30)
DRAIN CONNECTIONS
Install drains to meet the local sanitation codes. If adequate gravity
drainage cannot be provided, a field installed condensate pump
accessory should be used. Refer to the Installation Instructions of
the condensate pump for detailed specifications. (Condensate
Pump built- in on Ducted and Cassette indoor units).
NOTE: The high wall fan coils have internal condensate trap.
An external trap is not required.
WIRING
The main power is supplied to the outdoor unit. Four field supplied
connecting cables from the outdoor unit to each of the indoor units
are: L1, L2, Ground, and S for communication between the
outdoor unit and each indoor unit.
CONTROL SYSTEM
The 38MG / 40MA / 40MB unit is equipped with a microprocessor
control to operate the system and give optimum levels of comfort
and operating efficiency.
There are microprocessor boards and thermistors located in both
the indoor and outdoor units. The thermistors monitor the system
operation and control the operating mode. The change in the
settings or the modes of operation, use the factory supplied
wireless remote control.
The 38MG / 40MA / 40MB unit has the following operating
modes:
S Fan Only
S Auto
S Heating (on Heat Pumps only)
S Cooling
S Dehumidification (Dry)
FAN O NLY - 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 - When in Cooling mode, the fan runs all the time and
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 place of a dehumidifier.
In addition to the above modes that are selected by using the
remote control, the unit can run in emergency mode by using a
manual button. This mode is used when the remote is misplaced or
the batteries in the remote have died. In this mode, the unit will run
in AUTO mode with a predetermined set point (76_F/24.4_C)
21
WIRELESS REMOTE CONTROL
1. A wireless remote control is supplied for system operation.
2. Each battery- operated wireless remote control may be used
to control more than one unit.
3. The wireless remote control has a range of 25 ft. (7.6 m).
Fig. 15 – Wireless remote control
WIRED REMOTE CONTROL (STANDARD
ON DUCTED UNITS)
1. Optional wired remote controller used for system operation
of all high- wall, cassette and floor console units.
2. Kit includes a wired remote controller and a connecting
cable.
3. Connect with wire terminal between remote controller and
indoor unit.
4. Display in _For_C and temperature increments every 1_F
or every 1_C.
Fig. 16 – Wired remote control
SEQUENCE OF OPERATION
Simultaneous heating and cooling is not allowed. At start- up, the
first indoor unit to call for operation (heating or cooling) will
control from the preset position, the mode of operation for the rest
of the indoor units connected to the same outdoor unit. If the other
units conflict in mode with the first unit an error message will be
displayed on those units.
When a unit is set to COOL, HEAT or DRY mode, the electronic
expansion valve is first initialized (closed) and then is opened to a
preset position.
Superheat heat for each fan coil (the ones that are energized) is
monitored and the position of the electronic expansion valve is
adjusted to ensure that each fan coil gets the appropriate amount of
refrigerant to maintain the requir ed superheat. Aft er the set point is
satisfied and the fan coil shuts off, the electroni c expansion valve stays
open for a specified time to ensure that system pressures equalize .
When the system is set for COOL, HEAT or DRY mode, the
compressor speed is varied by comparing the indoor air
temperature with the set point and continuously adjusting the
compressor speed (to keep the compressor running as long as
possible) in an effort to maintain the greatest comfort possible.
The indoor fan can be running in MANUAL or AUTO mode.
When the fan is running in AUTO mode, the speed is determined
by comparing the room temperature to the set point.
In COOLING mode, when the set point is satisfied, the fan will
continue running. In HEATING mode, when the set point is
satisfied, the fan speed will be reduced and then will run
continuously until the coil temperature drops to a point cold air is
blown on the occupants in the space, at which time the indoor fan
is de- energized.
When the unit goes through the defrost cycle, the indoor fans are
de- energized and the refrigerant is circulated through all the fan
coils (even if they were off or on standby before the defrost cycle)
to maximize the heat transfer surface area available for defrost
operation.
CN18/CN19/CN22Output:Pin5&6(12V) Pin1-Pin4:Pulse waveform,(0-12V)
CN17Input:Pin3~4 (5V) Pin2(0V),Pin1,Pin5(0-5V)
CN7Input:Pin1 (0-5V) Pin2(5V)
CN1~CN2,CN5~CN6Output: CN1~CN2,CN5~CN6(230VAC High voltage)
P1~P2Output: Connectionof the high voltage
CN3~CN4Input:230VAC High voltage
CN14Input:Pin1,Pin3(0V),Pin2,Pin4(0~5V)
P-1,P-2Connection to the earth
CN20,CN23,CN25Output: Pin1(Connection of the high voltage),Pin2~Pin3(230VAC High voltage)
CN15Input: Pin1,Pin3,Pin5(5V),Pin2,Pin4,Pin6(0~5V)
CN37Output: Pulse(0-320VDC) for DC FAN
CN38Input: Pin1~Pin2(17VDC)
N-OUT~L-OUTOutput: 230VAC High voltage
CN21input: Pin1~Pin3(12VDC),Pin2~Pin3(5VDC),Pin4~Pin3(0~5VDC),Pin5~Pin3(0~5VDC)
CN39Input: 270~370VDC High voltage
OUTDOOR UNIT IPM BOARD
CN4~CN5Output: 230VAC High voltage
CN2,CN3Connect to Reactor, (270~370VDC)
CN6Output: Pin1~Pin2(17VDC)
CN1Output: Pin1~Pin3(12VDC),Pin2~Pin3(5VDC),Pin4~Pin3(0~5VDC),Pin5~Pin3(0~5VDC),
CN11~CN12Output: 270~370VDC High voltage
U~V~WConnect to compressor voltage among phases 0~200VAC
27
Fig. 21 – Wiring Diagrams 27k
OUTDOOR UNIT CONTROL BOARD SIZE 27
CODEPARTNAME
CN18/CN19/CN22Output:Pin5&6(12V) Pin1-Pin4:Pulse waveform,(0-12V)
CN17Input:Pin3~4 (5V) Pin2(0V),Pin1,Pin5(0-5V)
CN7Input:Pin1 (0-5V) Pin2(5V)
CN1~CN2,CN5~CN6Output: CN1~CN2,CN5~CN6(230VAC High voltage)
P1~P2Output: Connectionof the high voltage
CN3~CN4Input:230VAC High voltage
CN14Input:Pin1,Pin3(0V),Pin2,Pin4(0~5V)
P-1,P-2Connection to the earth
CN20,CN23,CN25Output: Pin1(Connection of the high voltage),Pin2~Pin3(230VAC High voltage)
CN15Input: Pin1,Pin3,Pin5(5V),Pin2,Pin4,Pin6(0~5V)
CN37Output: Pulse(0-320VDC) for DC FAN
CN38Input: Pin1~Pin2(17VDC)
N-OUT~L-OUTOutput: 230VAC High voltage
CN21input: Pin1~Pin3(12VDC),Pin2~Pin3(5VDC),Pin4~Pin3(0~5VDC),Pin5~Pin3(0~5VDC)
CN39Input: 270~370VDC High voltage
OUTDOOR UNIT IPM BOARD
CN4~CN5Output: 230VAC High voltage
CN2,CN3Connect to Reactor, (270~370VDC)
CN6Output: Pin1~Pin2(17VDC)
CN1Output: Pin1~Pin3(12VDC),Pin2~Pin3(5VDC),Pin4~Pin3(0~5VDC),Pin5~Pin3(0~5VDC),
CN11~CN12Output: 270~370VDC High voltage
U~V~WConnect to compressor voltage among phases 0~200VAC
28
Fig. 22 – Wiring Diagram 36k
OUTDOOR UNIT CONTROL BOARD SIZE 36
CODEPARTNAME
CN17/CN18/CN19/CN20/CN21Output:Pin5&6(12V) Pin1-Pin4:Pulse waveform,(0-12V)
CN8Input:Pin3~4 (5V) Pin2(0V),Pin1,Pin5(0-5V)
CN33Input:Pin1 (0-5V) Pin2(5V)
CN4~CN40,CN10~CN44Output: CN4~CN40,CN10~CN44(230VAC High voltage)
CN3~CN22Output: High voltage for 4-way control
CN1~CN2Input:230VAC High voltage
CN9Input:Pin1,Pin3(0V),Pin2,Pin4(0~5V)
P-1Connection to the earth
CN27,CN28,CN29,CN30Output: Pin1(Connection of the high voltage),Pin2~Pin3(230VAC High voltage)
CN13Input: Pin1,Pin3,Pin5(5V),Pin2,Pi n4,Pin6(0~5V)
CN12Output: Pulse(0-200VAC)for DC FAN
CN11Output: Pulse(0-200VAC)for DC FAN
CN5~CN6Output: 230VAC High voltage
CN7
CN4~CN5Output: 230VAC High voltage
CN2,CN3Connect to Reactor, (270~370VDC)
CN6Output: Pin1~Pin2(17VDC)
CN1Output: Pin1~Pin3(12VDC),Pin2~Pin3(5VDC),Pin4~Pin3(0~5VDC),Pin5~Pin3(0~5VDC),
CN11~CN12Output: 270~370VDC High voltage
U~V~WConnect to compressorvoltage among phases 0~200VAC
CN1,CN3、P-1Power input: 230V AC
CN2,CN4Output: Power output for DRIVER BOARD (230V AC)
CN5Input: Communication Main board and IPM Board ,Pin1(5V DC )
CN6Input: DC FAN motor1 and DC FAN motor2 control, (Pin7 5V DC)
CN8,CN9Input: Temperature sensor(5V DC)
CN10Input: Pressure test (5V DC)
CN13Input: Indoor pipe Temperature sensor,Pin1&Pin3&Pin5&Pin7&Pin9&Pin11 (5V DC)
CN15,CN23,CN26, CN30,CN33Output: PMV control,Pin5(12V DC),Pin6(12V DC)
CN17,CN18Output: High voltage for 4-way(SV) control (230V AC)
CN19,CN20Output: High voltage for HEAT_D control (230V AC)
CN13,CN16,CN21, CN29,CN37Output: Communication to indoor unit,Pin2 and Pin3 (230V AC ),Pin1 (S, connection to high voltage)
CN24,CN25Output: High voltage for HEAT_Y control(230V AC)
CN27、CN32、CN34,
CN28、CN31、CN36
CN39Output: L2 forAC FAN、SV and HEAT ,High voltage (AC)
P-5,P-6Connection to the earth
UVWOutput: Pulse(0-380VDC) for COMPRESSOR
CN3
CN6 ,CN8Input: Power input for DRIVER BOARD (200-320V DC )
CN7,CN11Output: DC FAN motor1 and DC FAN motor2 control (Pin1 310V or 380V DC)
CN9Output: Communication Main board and IPM Board Pin7(5V DC )
CN55Output: Communication IPM Board and Main board Pin1(12V DC )
CN14、CN15-- CN39,Output: High DC voltage (310V or 380V DC)
Output: Power output for AC FANmotor1 and AC FAN motor2 (230V AC)
OUTDOOR UNIT IPM BOARD
Output: Connect PFC Inductance, high DC voltage
30
Size Range:1 1/2, 2 1/4, 3 and 4 Ton Nominal Cooling and Heating Capacity
PART1–GENERAL
1.01 System Description
A. Outdoor air- cooled split sys t em compressor se ctions suitabl e for
on- the- ground, rooftop, wall hung or balc ony mounting. Units
shall consist of a variable speed rotary compressor, an air- cooled
coil, propeller-t ype draw- through outdoor fan, reversing valve ,
accumulator , electronic expansion valves, multiple service valves,
and controls that allows multiple indoor unit s to be connected to
the outdoor unit. Units shall discha rge horizontal ly as shown on
the contract drawings. Units shall function as the outdoor
component of an air-t o-air hea t pump syste m .
B. Units shall be used in a refrigeration circuit matched to two,
three, four, or five multi style heat pump fan coil units.
1.02 Agency Listings
A. Unit construction shall comply with ANSI/ASHRAE 15, latest
revision, and with NEC.\
B. Units shall be evaluated in accordance with UL standard 1995.
C. Units shall be listed in 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 550 psig.
1.03 Delivery, Storage, And Handling
Units shall be shipped in one piece and shall be stored and handled
per manufacturer’s recommendations.
1.04 Warranty (For Inclusion By Specifying
Engineer)
PART 2 – PRODUCTS
2.01 Equipment
A. General:
Factory assembled, single piece, air-cooled outdoor unit. Contained
within the enclosure shall be all factory wiring, piping, controls,
and compressor.
B. Unit Cabinet:
1. Unit cabinet shall be constructed of galvanized steel,
bonderized and coated with baked-enamel finish on inside
and outside.
2. Unit access panel should 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.
C. Fans:
1. Outdoor fans shall be direct-drive propeller type, and shall
discharge air horizontally. Fan shall draw air through the
outdoor coil.
2. Outdoor fan motors shall be multi- speed, totally-enclosed,
single phase motors with permanently lubricated ball
bearings. Motor shall be protected by internal thermal
overload protection.
3. Shaft shall have inherent corrosion resistance.
4. Outdoor fan openings shall be equipped with metal/mesh
PVC coated protection grille over fan.
GUIDE SPECIFICATIONS
HORIZONTAL DISCHARGE OUTDOOR UNITS
Carrier Model Number: 38MG
D. Compressor
1. Compressor shall be fully hermetic variable speed rotary
type.
2. Compressor shall be single phase, inverter driven.
3. Compressor shall be equipped with oil system, operating oil
charge, and motor .
4. Motor shall be suitable for operation in refrigerant and oil
atmosphere.
5. Compressor assembly shall be installed on rubber vibration
isolators.
6. The inverter and compressor shall be protected against over
temperature and over current.
E. Outdoor Coil:
Coil shall be constructed of Aluminum fins mechanically bonded
to seamless copper tubes, which are cleaned, dehydrated and
sealed.
F. Refrigerant Components:
Refrigerant circuit components shall include multiple brass external
liquid line service valves with service gauge connection port,
multiple suction line service valves with service gage connection
port, accumulator, reversing valve, electronic expansion valves.
G. Safeties:
Operating safeties shall be factory selected, assembled, and tested.
The minimum functions shall include the following:
1. Compressor discharge over temperature protection.
2. System low voltage protection.
3. Compressor overload protection.
4. Compressor over current protection.
5. IPM module protection.
H. Electrical Requirements:
1. Units shall operate on single-phase, 60 Hz power at
208/230 v.
2. Unit electrical power shall be a single point connection.
3. All power and control wiring must be installed per NEC
and all local electrical codes.
4. Units shall have multiple terminal blocks to connect to
multiple indoor units.
31
PART1–GENERAL
1.01 System Description
Indoor, wall-mounted, direct expansion fan coils are matched with
heat pump outdoor units.
1.02 Agency Listings
Unit shall be rated per AHRI Standards 210/240 and listed in the
AHRI directory as a matched system.
1.03 Delivery, Storage, And Handling
Units shall be shipped in one piece and shall be stored and handled
per manufacturer’s recommendations.
1.04 Warranty (For Inclusion By Specifying
Engineer)
PART 2 – PRODUCTS
2.01 Equipment
A. General:
Indoor, direct-expansion, wall-mounted fan coil. Unit shall be
complete with cooling/heating coil, fan, fan motor, piping
connectors, electrical controls, microprocessor control system, and
integral temperature sensing. Unit shall be furnished with integral
wall mounting bracket and mounting hardware.
B. Unit Cabinet:
Cabinet discharge and inlet grilles shall be attractively styled,
high-impact polystyrene. Cabinet shall be fully insulated for
improved thermal / acoustic performance.
C. Fans:
1. Fan shall be tangential direct-drive blower type with air
intake at the top of the unit and discharge at the bottom
front. Automatic, motor-driven vertical air sweep shall be
provided standard.
2. Air sweep operation shall be useable selectable. The vertical
sweep may be adjusted (using the remote control) and the
horizontal air direction maybe be set manually.
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. A drip pan under the coil shall have a drain connection
for hose attachment to remove condensate. Condensate pan shall
have internal trap.
E. Motors:
Motors shall be totally enclosed, permanently lubricated ball
bearing with inherent overload protection. Fan motors shall be
3- speed.
F. Co nt rols:
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_Fto86_F(17_Cto30_C) in increments of 1_For
1_C, and have 46_F Heating Mode (Heating Setback). The
wireless remote controller shall have the ability to act as the
temperature sensing location for room comfort.
GUIDE SPECIFICATIONS
INDOOR WALL-MOUNTED DUCTLESS UNITS
Size Range: 3/4 to 2 Ton Nominal Cooling and Heating Capacity
Carrier Model Number: 40MAQ
The unit shall have the following functions as a minimum:
SAn automatic restart after power failure at the same
operating conditions as at failure.
SA timer function to provide a minimum 24 - hour timer
cycle for system Auto Start/Stop.
STemperature- sensing controls shall sense return air
temperature.
SIndoor coil freeze protection.
SWireless infrared remote control to enter set points and
operating conditions.
SAutomatic air sweep control to provide on or off
activation of air sweep louvers.
SDehumidification mode shall provide increased latent
removal capability by modulating system operation and
set point temperature.
SFan- only operation to provide room air circulation when
no cooling is required.
SDiagnostics shall provide continuous checks of unit
operation and warn of possible malfunctions. Error
messages shall be displayed at the unit.
SFan speed control shall be user- selectable: turbo, high,
medium, low, or microprocessor controlled automatic
operation during all operating modes.
SAutomatic heating- to- cooling changeover in heat pump
mode. Control shall include deadband to prevent rapid
mode cycling between heating and cooling.
SIndoor coil high temperature protection shall be provided
to detect excessive indoor discharge temperature when
unit is in heat pump mode.
G. Filters:
Units shall have filter track with factory-supplied cleanable filters.
H. Electrical Requirements:
Indoor fan motor to operate on 208- 230V. Power is supplied from
the outdoor unit.
I. Operating Characteristics:
The system shall have a minimum SEER (Seasonal Energy
Efficiency Ratio) and HSPF at AHRI conditions, as listed on the
specifications table.
J. Refrigerant Lines:
All units should have refrigerant lines that can be oriented to
connect from the left, right or back of unit. Both refrigerant lines
need to be insulated.
K. Special Features (Field Installed):
1. Condensate Pump:
The condensate pump shall remove condensate from the
drain pan when gravity drainage cannot be used. Pump shall
be designed for quiet operation. Pump shall consist of two
parts: an internal reservoir/sensor assembly, and a remote
sound- shielded pump assembly. A liquid level sensor in the
reservoir shall stop cooling operation if the liquid level in
the reservoir is unacceptable.
32
PART 1 - GENERAL
1.01 System Description
Indoor, in- ceiling, direct-expansion fan coils are matched with
heat pump outdoor unit .
1.02 Agency Listings
Unit shall be rated per AHRI Standards 210/240 and listed in the
AHRI directory as a matched system.
1.03 Delivery, Storage, And Handling
Units shall be stored and handled per unit manufacturer’s
recommendations.
1.04 Warranty (For Inclusion By Specifying
Engineer)
PART 2 - PRODUCTS
2.01 Equipment
General:
Indoor, direct- expansion, in-ceiling cassette fan coil. Unit shall be
complete with cooling/heating coil, fan, fan motor, piping
connectors, electrical controls, microprocessor control system, and
integral temperature sensing.
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.
Fans:
Fan shall be centrifugal direct- - drive blower type with
S
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.
SAir sweep operation shall be user selectable.
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.
Motors:
Motors shall be open drip- proof, permanently lubricated ball
bearing with inherent overload protection. Fan motors shall be
4- speed.
Controls:
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_Fto86_F(17_Cto30_C) in increments of 1_For
1_C, and have 46_F Heating Mode (Heating Setback). The
wireless remote controller, shall have the ability to act as the
temperature sensing location for room comfort.
GUIDE SPECIFICATIONS
INDOOR CASSETTE DUCTLESS UNITS
Size Range: 3/4 to 1 1/2 Ton Nominal Cooling and Heating Capacity
Carrier Model Number: 40MB*C
The unit shall have the following functions as a minimum:
SAn automatic restart after power failure at the same
operating conditions as at failure.
SA timer function to provide a minimum 24 - hour timer
cycle for system Auto Start/Stop.
STemperature- sensing controls shall sense return air
temperature.
SIndoor coil freeze protection.
SWireless infrared remote control to enter set points and
operating conditions.
SAutomatic air sweep control to provide on or off
activation of air sweep louvers.
SDehumidification mode shall provide increased latent
removal capability by modulating system operation and
set point temperature.
SFan- only operation to provide room air circulation when
no cooling is required.
SDiagnostics shall provide continuous checks of unit
operation and warn of possible malfunctions. Error
messages shall be displayed at the unit.
SFan speed control shall be user- selectable: high,
medium, low, or microprocessor controlled automatic
operation during all operating modes.
SAutomatic heating- to- cooling changeover in heat pump
mode. Control shall include deadband to prevent rapid
mode cycling between heating and cooling.
SIndoor coil high temperature protection shall be provided
to detect excessive indoor discharge temperature when
unit is in heat pump mode.
Filters:
Unit shall have filter track with factory- supplied cleanable filters.
Electrical
Indoor fan motor to operate on 208- 230V. Power is supplied from
the outdoor unit.
Operating
The system shall have a minimum SEER (Seasonal Energy
Efficiency Ratio) and HSPF at AHRI conditions, as listed on the
specifications table.
Refrigerant
All units should have refrigerant lines that can be oriented to
connect from the left, right or back of unit. Both refrigerant lines
need to be insulated.
Requirements:
Characteristics:
Lines:
33
PART 1 - GENERAL
1.01 System Description
Indoor, ceiling- mounted, direct-expansion fan coils are matched
with a heat pump outdoor unit.
1.02 Agency Listings
Unit shall be rated per AHRI Standards 210/240 and listed in the
AHRI directory as a matched system.
1.03 Delivery, Storage, And Handling
Units shall be stored and handled per unit manufacturer’s
recommendations.
1.04 Warranty (For Inclusion By Specifying
Engineer)
PART 2 - PRODUCTS
2.01 Equipment
General:
A.
Indoor, direct- expansion, ceiling- mounted fan coil. Unit shall be
complete with cooling/heating coil, fan, fan motor, piping
connectors, electrical controls, microprocessor control system, and
integral temperature sensing.
B, Unit Cabinet:
Unit cabinet shall be constructed of galvanized steel. Cabinet shall
be fully insulated for improved thermal and acoustic performance.
C. Fans:
Fan shall be tangential direct- drive blower type with air intake at
the rear or bottom of the unit and discharge at the front.
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. 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. Controls:
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_Fto86_F(17_Cto30_C) in increments of 1_For
1_C, and have 46_F Heating Mode (Heating Setback). The
wireless remote controller shall have the ability to act as the
temperature sensing location for room comfort.
GUIDE SPECIFICATIONS
INDOOR DUCTED UNITS
Size Range: 3/4 to 2 Ton Nominal Cooling and Heating Capacity
Carrier Model Number: 40MB*D
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. Wireless infrared remote control to enter set points and operating
conditions.
6. De-humidification 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.
G. Electrical Requirements:
Indoor fan motor to operate on 208- 230V. Power is supplied from
the outdoor unit.
H. Operating Characteristics:
The system shall have a minimum SEER (Seasonal Energy
Efficiency Ratio) and HSPF at AHRI conditions, as listed on the
specifications table.
I. Refrigerant Lines:
All units should have refrigerant lines that can be oriented to
connect from the side of the unit. Both refrigerant lines need to be
insulated.
34
PART 1 - GENERAL
1.01 System Description
Indoor, wall-mounted, direct-expansion fan coils are matched with
a heat pump outdoor unit.
1.02 Agency Listings
Unit shall be rated per AHRI Standards 210/240 and listed in the
AHRI directory as a matched system.
1.03 Delivery, Storage, And Handling
Units shall be stored and handled per unit manufacturer’s
recommendations.
1.04 Warranty (For Inclusion By Specifying
Engineer)
PART 2 - PRODUCTS
2.01 Equipment
A. General:
Indoor, direct-expansion, floor-mounted fan coil. Unit shall be
complete with cooling/heating coil, fan, fan motor, piping
connectors, electrical controls, microprocessor control system, and
integral temperature sensing. Unit shall be furnished with integral
mounting bracket and mounting hardware.
B. Unit Cabinet:
Cabinet discharge and inlet grilles shall be attractively styled,
high- impact polystyrene. Cabinet shall be fully insulated for
improved thermal and acoustic performance.
CFans:
1. Fan shall be tangentia l direct- drive blower type wit h ai r intake in
the center of the unit and discharge at the top and bottom front.
Automat ic, motor- driven vertical air sweep shall be provided standard.
2. Air sweep operation shall be user selectable. The vertical sweep
may be adjusted (using the remote control) and the horizontal air
direction may be set manually.
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. A drip pan under the coil shall have a drain connection
for hose attachment to remove condensate. Condensate pan shall
have internal trap.
E. Motors:
Motors shall be open drip- proof, permanently lubricated ball
bearing with inherent overload protection. Fan motors shall be
3- speed.
F Controls:
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_Fto86_F(17_Cto30_C) in increments of 1_For
1_C, and have 46_F Heating Mode (Heating Setback). The
wireless remote controller shall have the ability to act as the
temperature sensing location for room comfort.
GUIDE SPECIFICATIONS
INDOOR FLOOR CONSOLE DUCTLESS UNITS
Size Range: 3/4 to 1 Ton Nominal Cooling and Heating Capacity
Carrier Model Number: 40MB*F
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.Wireless infrared remote control to enter set points and operating
conditions.
6. Automatic air sweep control to provide on or off activation of air
sweep louvers.
7. De humidification mode shall provide increased latent removal
capability by modulating system operation and set point
temperature.
8. Fan- only operation to provide room air circulation when no
cooling is required.
9. Diagnostics shall provide continuous checks of unit operation
and warn of possible malfunctions. Error messages shall be
displayed at the unit.
10. Fan speed control shall be user- selectable: high, medium, low,
or microprocessor controlled automatic operation during all
operating modes.
11. Automatic heating- to- cooling changeover in heat pump mode.
Control shall include deadband to prevent rapid mode cycling
between heating and cooling.
12. Indoor coil high temperature protection shall be provided to
detect excessive indoor discharge temperature when unit is in heat
pump mode.
G. Filters: Unit shall have filter track with factory- supplied
cleanable filters.
H. Electrical Requirements: Indoor fan motor to operate on
208- 230V as specified. Power is supplied from the outdoor unit.
I. Operating Characteristics: The system shall have a minimum
SEER (Seasonal Energy Efficiency Ratio) and HSPF at AHRI
conditions, as listed on the specifications table.
J. Refrigerant Lines:
All units should have refrigerant lines that can be oriented to
connect from the left, right or back of unit. Both refrigerant lines
need to be insulated.
K. Special Features (Field Installed):
1. Condensate Pump: The condensate pump shall remove
condensate from the drain pan when gravity drainage cannot be
used. Pump shall be designed for quiet operation. Pump shall
consist of two parts: an internal reservoir/sensor assembly, and a
remote sound- shielded pump assembly. A liquid level sensor in
the reservoir shall stop cooling operation if the liquid level in the
reservoir is unacceptable.
35
Copyright 2015 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231
Manufacturer r eserves the right to change, at any time, specifications and designs without notice and without obligations.
Edition Date: 05/15
36
Catalog No. 38MG - 02PD
Replaces: 38MG- 01PD
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