Section 238126.13 – Mini-Split Systems

HVAC Guide Specifications
Ductless Mini-Splits MSZ-GE
Section 238126.13 – Mini-Split Systems
Capacity Range: 0.75 to 2.0 Ton Nominal
Mitsubishi Model Number: MSZ-GE (wall-mount) inverter heat pump series.
Part 1 – General
1.01 System Description
A. The heat pump air conditioning system shall be a Mitsubishi Electric MSZ-GE split
system series. The system shall consist of a slim silhouette, compact, wall mounted indoor
fan coil section with wireless remote controller and a slim silhouette horizontal discharge
outdoor unit which shall be of an inverter driven heat pump design.
B. Indoor unit model numbers may be MSZ-GE09NA-8, MSZ-GE12NA-8, MSZ-GE15NA8, MSZ-GE18NA-8 and MSZ-GE24NA. Outdoor unit model numbers may be MUZGE09NA, MUZ-GE12NA, MUZ-GE15NA-1, MUZ-GE18NA-1 and MUZ-GE24NA for
single-zone (1:1) systems
1.02 Quality Assurance
A. The units shall be tested by a Nationally Recognized Testing Laboratory (NRTL) and
shall bear the ETL label.
B. All wiring shall be in accordance with the National Electrical Code (N.E.C.).
C. The units shall be rated in accordance with Air-conditioning, Heating, and Refrigeration
Institute’s (AHRI) Standard 240 and bear the AHRI Certification label.
D. The units shall be manufactured in a facility registered to ISO 9001 and ISO 14001,
which is a set of standards applying to environmental protection set by the International
Standard Organization (ISO).
E. A dry air holding charge shall be provided in the indoor section.
F. System efficiency shall meet or exceed 19 SEER when part of a 1:1 (indoor/outdoor)
system.
G. Delivery, Storage and Handling
1. Unit shall be stored and handled according to the manufacturer’s recommendations.
2. The hand held wireless controller shall be shipped inside the carton with the indoor
unit and able to withstand 105°F storage temperatures and 95% relative humidity
without adverse effect.
Part 2 – Warranty
2.01 The units shall have a manufacturer’s parts and defects warranty for a period five (5) years
from date of installation. The compressor shall have a warranty of seven (7) years from the
same date of installation. If, during this period, any part should fail to function properly due
to defects in workmanship or material, it shall be replaced or repaired at the discretion of
the manufacturer. This warranty does not include labor.
2.02 Manufacturer shall have over 30 years of continuous experience in the U.S. market.
Part 3 – Performance
3.01 Each system shall perform in accordance with the ratings shown in the table below.
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3.02 Cooling performance shall be based on 80°F DB, 67°F WB (27°C DB, 19°C WB) for the
indoor unit and 95°F DB, 75°F WB (35°C DB, 23.9°C WB) for the outdoor unit.
3.03 Heating performance shall be based on 70ºF DB, 60 ºF WB (21ºC DB, 16ºC WB) for the
indoor unit and 47 º F DB, 43º F WB (8 º C DB, 6º C WB) for the outdoor unit.
3.04 Single-Zone One-to-One Product Table – Heat Pump
Outdoor / Indoor Model
Numbers
TC Cooling*
BTU/h
TC Heating*
BTU/h
TPW
Cooling*
TPW
Heating*
SEER
HSPF
MUZ-GE09NA /
MSZ-GE09NA-8
MUZ-GE12NA /
MSZ-GE12NA-8
MUZ-GE15NA-1 /
MSZ-GE15NA-8
MUZ-GE18NA-1 /
MSZ-GE18NA-8
MUZ-GE24NA /
MSZ-GE24NA
3,80012,200
3,80013,600
3,10018,200
3,70018,700
8,20031,400
4,500-14,100
205-1,200
255-1,200
21.0
10
5,500-18,100
205-1,300
340-1,660
20.5
10
4,800-20,900
160-2,000
270-2,010
21.0
10
3,500-25,200
240-2,070
230-2,680
19.2
10
7,500-36,900
570-3,580
320-3,650
19.0
10
*TC = Total Capacity, TPW = Total Power Watts
Operating Range
Cooling Maximum
Minimum
Heating Maximum
Minimum
*AHRI 210/240 testing conditions
Indoor Air Intake Temperature
D.B. 90°F (32.2°C) W.B. 73°F (22.7°C)
D.B. 67°F (19.4°C) W.B. 57°F (13.8°C)
D.B. 80°F (27°C) W.B. 67°F (19°C)
D.B. 70°F (21°C) W.B. 60°F (16°C)
Outdoor Air Intake Temperature
D.B. 115°F (46.1°C)
D.B. 14°F (-10°C)
D.B. 75°F (24°C) W.B. 65°F (18°C)
D.B. -4°F (-20°C) W.B. -5°F (-21°C)
Part 4 – Products
4.01: Indoor Unit
A. General:
The indoor unit shall be factory assembled, wired and run tested. Contained within the
unit shall be all factory wiring, piping, control circuit board, fan and fan motor. The unit
shall have a self-diagnostic function, 3-minute time delay mechanism, and an auto restart
function after power interruption. Indoor unit shall be purged with dry air before
shipment from factory.
B. Unit Cabinet:
1. The casing shall have a smooth front, white finish – Munsell 1.0Y 9.2/0.2.
2. Multi directional drain connection and refrigerant piping, offering three (3) direction
pipe alignments for all refrigerant piping and two (2) direction pipe alignments for
condensate draining shall be standard.
3. There shall be a separate, metal installation-plate that secures the indoor unit firmly to
the wall. The installation-plate shall be securely attached to the wall using appropriate
anchor method. Installing contractor shall determine the best method and be responsible
for proper mounting of the installation plate to the wall.
C. Fan:
1. The indoor unit fan shall be an assembly with a line-flow fan direct driven by a single
motor.
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2. The fan shall be statically and dynamically balanced and be powered by a motor with
permanently lubricated bearing.
3. A manual adjustable guide vanes shall be provided with the ability to change the
airflow from side to side (left to right).
4. An integral, motorized, multi-position, horizontal air sweep flow louver shall provide
for uniform air distribution, up and down. Five (5) positions plus Auto and Swing
shall be provided, controlled from the remote controller.
5. The indoor fan shall operate at one of five (5) speeds: Super High, High, Medium,
Low, and Quiet plus Auto Fan Mode for models up to 18,000 BTU/h, and four (4)
speeds: Powerful, High, Medium and Low plus Auto Fan Mode for the 24,000 BTU/h
model. All speeds shall be selected from the remote controller.
Indoor unit sound level shall not exceed:
Super
Model / Speed
High
Medium
Low
Quiet
High
Cooling dB(A)
43
37
30
22
19
MSZ-GE09NA-8
Heating dB(A)
43
37
30
22
19
Cooling dB(A)
45
37
30
22
19
MSZ-GE12NA-8
Heating dB(A)
43
37
30
22
19
Cooling dB(A)
49
44
38
32
26
MSZ-GE15NA-8
Heating dB(A)
46
40
35
30
26
Cooling dB(A)
49
44
38
33
28
MSZ-GE18NA-8
Heating dB(A)
49
43
38
33
28
Model / Speed
Cooling dB(A)
MSZ-GE24NA
Heating dB(A)
Powerful
53
52
High
49
49
Medium
41
41
Low
34
32
D. Filter:
1. Return air shall be filtered by means of easily removed, washable, Catechin,
Antioxidant Pre-filter and an Anti-allergy enzyme filter – blue, pleated type.
E. Coil:
1. The indoor unit coil shall be of nonferrous construction with smooth plate fins on
copper tubing.
2. The tubing shall have inner groves for high efficiency heat exchange.
3. All tube joints shall be brazed with phoscopper or silver alloy.
4. The coils shall be pressure tested at the factory.
5. A sloped, corrosion resistant condensate pan with drain shall be provided under the
coil.
6. An optional drain pan level switch (DPLS1), designed to connect to the control board,
shall be provided if required, and installed on the condensate pan to prevent
condensate from overflowing.
F. Electrical:
1. The unit electrical power shall be 208-230 volts, 1-phase, 60 hertz.
2. The system shall be equipped with A-Control – a system directing that the indoor unit
be powered directly from the outdoor unit using a 3-wire, 14 gauge AWG connection
plus ground.
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3. The indoor unit shall not have any supplemental electrical heat elements.
4.02: Control
A. . General:
1. The unit shall have a wireless hand held remote controller to perform input functions
necessary to operate the system.
2. The wireless hand held controller shall have a Power On/Off switch, Mode Selector –
Auto, Cool, Heat, Dry Modes - Temperature Setting, Timer Control with Clock, Fan
Speed Select and Vane / Airflow Direction selector. Controller shall have a
programmable Smart Set button for pre-selected Temperature, Fan Speed, and Vane
position settings.
3. The indoor unit shall perform Self-diagnostic Function and Check Mode switching.
4. Temperature changes shall be by 1ºF increments with a range of 61 - 88ºF (16-31ºC).
5. The microprocessor located in the indoor unit shall have the capability of sensing
return air temperature and indoor coil temperature, receiving and processing
commands from the wireless or a wired controller, providing emergency operation
and controlling the outdoor unit.
6. The system shall be capable of automatically restarting and operating at the
previously selected conditions when the power is restored after power interruption.
7. Control system shall control the continued operation of the air sweep louvers, as well
as provide On/Off, System/Mode function.
8. The indoor unit shall have the option of either a wireless or wired wall mounted
remote controller to be ordered separately:
a. Wireless, wall mounted remote controller kit (MHK1)
The Wireless, wall mounted remote controller kit (MHK1) shall consist of a
wireless, wall mounted controller (MRCH1), a wireless receiver (MIFH1) and a
cable (MRC1) to connect the receiver to the indoor unit. The controller shall be
white in color with a light-green LCD display and a backlight feature. The
MRCH1 shall consist of four Function buttons below the display, and
Increase/Decrease Set Temperature buttons and a Hold button to the right of the
display. The controller shall have a built-in temperature sensor and a battery
holder, using two AA alkaline batteries. Temperature shall be displayed in either
Fahrenheit (°F) or Celsius (°C), and temperature changes shall be by increments
of 1°F (0.5°C).
The MHK1 uses Honeywell RedLINKTM technology, and the wireless receiver is
specially designed for Mitsubishi units. Linking to the wireless network shall be
done from the receiver and from the remote controller. There shall not be any
interference with other wireless devices or neighboring RedLINKTM products.
Communication shall be automatically restored after power resumes and after
batteries are replaced.
The basic functions are:
Wireless, Wall Mounted Remote Controller Kit (MHK1)
Item
Description
Number of Units Controllable 1 unit
ON/OFF
Run and stop operation
Operation Mode
Switches between Cool/Drying/Auto/Fan/Heat.
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Mr. Slim MSZ-GE Series Guide Specification, Rev 07/11 © 2009, 2011 Mitsubishi Electric / HVAC
Wireless, Wall Mounted Remote Controller Kit (MHK1)
Item
Description
Temperature Setting
Controller general setpoint temperature range:
(Range and modes depend
Cool/Dry: 50°F-99°F
on connected unit model)
Heat: 40°F-90°F
Auto: 50°F-90°F
Controller temperature range when connected to the
MSZ-GE/MUZ-GE system:
Cool/Dry: 61°F-88°F
Heat: 61°F-88°F
Auto: 61°F-88°F
Fan Speed Setting
(Range and modes depend
on connected unit model)
Air Flow Direction Setting
(Air flow direction settings
depend on the unit model)
Dual Setpoint Control
Hi/Mid-2/Mid-1/Low/Auto
Air flow direction angles 100%-80%-60%-40%, Swing.
Separate heating and cooling setpoints. Adjustable
deadband from 2ºF to 8ºF. Automatically adjusts
setpoints to ensure deadband.
System changeover with dual setpoints.
Scheduling
5-2 and 5-1-1 schedules
Separate Heat/Cool schedules
Allows operation in AUTO with Scheduling setbacks
and dual setpoint
Simple temperature setting can be done up to 4 times
per day in the week. The time can be set by the 15minute interval.
Remote controller shall be programmable as either a
residential controller, which will offer residential
scheduling options only; or as a commercial controller,
which will offer commercial scheduling options only.
Optimal Start
Set occupied time and desired set temperature
Remote controller learns when to start warm up or
cool down so that space is at set temperature at start
of occupied time
Operating Conditions Display
Setpoint and room temperature. Default sensing is at
the remote controller. Installer setting to select at
return air sensor. Automatically switches to return air
sensor if communication to remote controller is lost
Outdoor temperature and humidity (Requires optional
air sensor MOS1)
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Wireless, Wall Mounted Remote Controller Kit (MHK1)
Item
Description
Additional Functions
Hold Function
Temporary Schedule Override
Reset to factory default
Error
When an error is currently occurring on an air
conditioner unit, the afflicted unit and the error code
are displayed
Auto Lock Out Function
Setting/releasing of simplified locking for remote
control settings can be performed.






Locking of all settings
Locking of ON/OFF setting
Locking of system setting (Heat, Cool, Off,
Auto, etc.)
Locking of fan setting
Locking of temperature setting
Locking of Clock/Day/Schedule
Two optional devices can be used with the MHK1 controller kit. These are, an
outdoor air sensor (MOS1), which allows the display of the outdoor temperature
and humidity, and a portable central controller (MCCH1), which can control up to
16 zones with On/Off, set temperature, heat/cool mode selection and auto-off
timer.
b. Wired Remote Controller (PAR-21MAA)
The Wired Remote Controller PAR-21MAA shall require a MAC-397IF-E MA
Series Terminal Interface for communications. Interface will be mounted at the
indoor unit. A two (2) conductor, stranded, 22 AWG twisted pair, jacketed, cable
shall connect the MAC-397IF-E to the PAR-21MAA wall controller. Connection
shall not be polarity sensitive and controller wire shall not exceed thirty-three (33)
feet (10m) length.
The wired remote controller shall be approximately 5” x 5” in size and white in
color with a light-green LCD display. The PAR-21MAA shall support a selection
from multiple languages (Spanish, German, Japanese, Chinese, English, Russian,
Italian, or French) for display information. There shall be a built-in weekly timer
with up to 8 pattern settings per day. The controller shall consist of an On/Off
button, Increase/Decrease Set Temperature buttons, a Cool/Auto/Fan/Dry mode
selector, a Timer Menu button, a Timer On/Off button, Set Time buttons, a Fan
Speed selector, a Ventilation button, a Test Run button, and a Check Mode button.
The controller shall have a built-in temperature sensor. Temperature shall be
displayed in either Fahrenheit (°F) or Celsius (°C), and Temperature changes shall
be by increments of 1°F (0.5°C). The PAR-21MAA shall have the capability of
controlling up to a maximum of 16 systems, as a group with the same mode and
set-point for all, at a maximum developed control cable distance of 1,500 feet
(500 meters).
The basic functions are:
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Wired Remote Controller (PAR-21MAA)
Item
Description
Number of Units Controllable 16 units as 1 group
ON/OFF
Run and stop operation
Operation Mode
Switches between Cool/Dry/Auto/Fan/Heat.
Temperature Setting
(Range and modes depend
on connected unit model)
Sets the setpoint temperature in the following range
Cool/Dry: 67°F-87°F
Heat: 63°F-83°F
Auto: 67°F-83°F
Fan Speed Setting
(Range and modes depend
on connected unit model)
Air Flow Direction Setting
(Air flow direction settings
depend on the unit model)
Weekly Scheduler
Operating Conditions Display
Hi/Mid-2/Mid-1/Low/Auto
Air flow direction angles 100%-80%-60%-40%, Swing.
ON/OFF/Temperature setting can be done up to 8
times one day in the week. The time can be set by the
1-minute interval.
Setpoint and room temperature. Sensing can be done
at the remote controller or the indoor unit depending
on the indoor unit dipswitch setting
Liquid, discharge, indoor and outdoor pipe
temperatures
LEV opening pulses, sub cooling and discharge super
heat
Compressor Operating Conditions: Running current,
frequency, input voltage, On/Off status and operating
time
Error
When an error is currently occurring on an air
conditioner unit, the afflicted unit and the error code
are displayed
Ventilation Equipment
Up to 16 indoor units can be connected to an
interlocked system that has one LOSSNAY unit.
LOSSNAY items that can be set are “Hi”, “Low”, and
“Stop”. Ventilation mode switching is not available.
Auto Lock Out Function
Setting/releasing of simplified locking for remote
control buttons can be performed.


Locking of all buttons
Locking of all buttons except ON/OFF button
9. The indoor units shall be capable of working with single-zone or multi-zone outdoor
units
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4.03: Outdoor Units
General:
The MUZ Series outdoor units are specifically designed to work with the MSZ indoor
units. The outdoor units must have a thermally fused powder coated finish. The outdoor
unit shall be completely factory assembled, piped and wired. Each unit shall be run tested
at the factory.
A. Unit Cabinet:
1. The casing shall be fabricated of galvanized steel, bonderized, finished with an
electrostatically applied, thermally fused acrylic or polyester powder coating for
corrosion protection. Assembly hardware shall be cadmium plated for weather
resistance.
2. Cabinet color shall be Munsell 3Y 7.8/1.1.
3. Two (2) mild steel mounting feet, traverse mounted across the cabinet base pan,
welded mount, providing four (4) slotted mounting holes shall be furnished. Assembly
shall withstand lateral wind gust up to 155 MPH to meet applicable weather codes.
B. Fan:
1. The unit shall be furnished with a direct drive propeller type fan.
2. The outdoor unit fan motor shall be a direct current (DC) motor and have
permanently lubricated bearings.
3. The fan motor shall be mounted for quiet operation.
4. The fan shall be provided with a raised guard to prevent contact with moving parts.
5. The outdoor unit shall have horizontal discharge airflow.
6. Outdoor unit sound level shall not exceed:
Model
Cooling
Heating
MSZ-GE09NA-8
46 dB(A)
50 dB(A)
MSZ-GE12NA-8
49 dB(A)
51 dB(A)
MSZ-GE15NA-8
49 dB(A)
51 dB(A)
MSZ-GE18NA-8
54 dB(A)
56 dB(A)
MSZ-GE24NA
55 dB(A)
55 dB(A)
C. Coil:
1. The outdoor unit coil shall be of nonferrous construction with lanced or corrugated
plate fins on copper tubing.
2. The coil shall be protected with an integral metal guard.
3. Refrigerant flow from the outdoor unit shall be regulated by means of an
electronically controlled, precision, linear expansion valve.
4. Outdoor unit shall be pre-charged with sufficient R-410a refrigerant for up to
twenty five (25) feet of refrigerant piping for capacities up to 18,000 BTU/h, and up to
thirty three (33) feet of refrigerant piping for capacities above 18,000 BTU/h.
5. All refrigerant lines between outdoor and indoor units shall be of annealed,
refrigeration grade copper tubing, ARC Type, meeting ASTM B280 requirements,
individually insulated in twin-tube, flexible, closed-cell, CFC-free (ozone depletion
potential of zero), elastomeric material for the insulation of refrigerant pipes and tubes
with thermal conductivity equal to or better than 0.27 BTU-inch/hour per Sq Ft / °F, a
water vapor transmission equal to or better than 0.08 Perm-inch and superior fire
ratings such that insulation will not contribute significantly to fire and up to 1” thick
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insulation shall have a Flame-Spread Index of less than 25 and a Smoke-development
Index of less than 50 as tested by ASTM E 84 and CAN / ULC S-102.
6. All refrigerant connections between outdoor and indoor units shall be flare type.
D. Compressor:
1. The compressor shall be a high performance, hermetic, inverter driven, variable
speed, dual rotary type manufactured by Mitsubishi Electric Corporation.
2. The compressor motor shall be direct current (DC) type equipped with a factory
supplied and installed inverter drive package.
3. The outdoor unit shall be equipped with an accumulator.
4. The compressor will be equipped with internal thermal overload protection.
5. The outdoor unit must have the ability to operate over the full capacity range with a
maximum height difference of 40 feet and have refrigerant tubing length of 65 feet for
capacities up to 15,000 BTU/h and a maximum height difference of 50 feet and have
refrigerant tubing length of 100 feet for capacities above 15,000 BTU/h between indoor
and outdoor units.
6. There shall be no need for line size changes. Filters, sight glasses, and traps shall
not be used, and no additional refrigerant oil shall be required.
7. The compressor shall be mounted so as to avoid the transmission of vibration.
E. Electrical:
1. The outdoor unit electrical power supply shall be 208/230 volts, 1-phase, 60 hertz.
2. The unit shall be capable of satisfactory operation within voltage limits of 187 volts
to 253 volts.
3. The outdoor unit shall be controlled by microprocessors located in the indoor
unit and outdoor unit. A 12 to 24 volt DC data stream shall communicate between the
units providing all necessary information for full function control.
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