Gree MULTI18HP230V1AO User manual

Technical Product Guide
MULTI OUTDOOR UNITS
Models:
MULTI18HP230V1AO
MULTI24HP230V1AO
MULTI30HP230V1AO
MULTI36HP230V1AO
MULTI42HP230V1AO

Table of Contents
Product Overview .................................2-3
Features and Benefits ..............................4-5
Product Nomenclature/AHRI Certification .............. 6
Product Performance Data ......................... 7-11
Dimensional Specifications........................12-14
Clearance Specifications.............................15
Electrical Wiring................................. 16-17
Condensate Removal ................................17
Indoor Unit Combinations.........................18-26
Extended Performance Ratings ....................27-31
Limited Warranty Statement ......................32-33

Height Dierence
Between Indoor Units:
50ft
PRODUCT OVERVIEW
SUPERIOR DESIGNS PROVIDE EASY SOLUTIONS TO COMPLEX PROBLEMS
GREE Ductless Multi Zone systems provide quiet comfort and energy ecient heating and cooling in up to
five dierent rooms – without ductwork. For most residential and light commercial applications, this is the ideal
solution to balance comfort, eciency and ease of installation. This Inverter-driven system oers Seasonal
Energy Eciency Ratings (SEER) up to 16. With individual room control and variable speed compressor
operation, comfort is boosted throughout your home or oce, while utility bills are held in check.
Gree’s exclusive G-10 Inverter technology powers the twin rotary compressor inside the Multi Zone
outdoor compressor section. The G-10 Inverter constantly adjusts the compressor speed to maintain
a comfortable room temperature. This saves energy, reduces outdoor noise and maintains a steady
room temperature by eliminating the harsh starts and stops of conventional systems.
When laying out a new project, you’ll appreciate the flexibility of Gree’s Multi Zone Systems. A single outdoor unit
can simultaneously power up to five indoor units while eliminating expensive ductwork. Without those ducts, your
installation is simpler, faster and more cost-eective. And the flexibility doesn’t stop there, as you can also mix
and match your choice of Wall Mount, Ceiling Cassette, Concealed Duct, Universal Floor/Ceiling and Mini Floor
Console indoor units to create a unique heating and cooling system to perfectly fit any project.
2
No pipe sweating
No sweating is needed for the pipe connection
between the indoor and outdoor units. All
piping connections are flared to simplify and
ease the piping installation.
Simple Wiring
No special or hard-to-find communication
wire is needed between the indoor and
outdoor units. The system uses common
14-4 AWG stranded copper THHN 600V
wire. The system’s communication is ready
as soon as the electrical wiring between the
indoor and outdoor units is complete.
High Lift Design
Gree’s High Lift design allows for extended
piping length, up to 262 feet total, as well as
50 feet of vertical lift from the condensing
units. This allows for greater flexibility in the
layout of the system.
Allows up to 262 feet of pipe length
Outdoor Unit
Indoor Unit
Power
Supply
Transmission System
Energy Saving
Multi Zone systems allow each room to be individually controlled. Only those rooms requiring air
conditioning (or heating) are cooled (or heated), and all of it is accomplished without ductwork.
In addition, Gree’s G-10 inverter technology reduces energy waste, maximizes eciency and
achieves up to 16 SEER.
1st Branching
Section
Height Dierence
Between Indoor Unit
and Outdoor Unit:
50ft
82ft
From Outdoor Unit to
the Indoor Unit:
82ft

PRODUCT OVERVIEW
3
Self-Diagnostics System
Each indoor and outdoor unit continuously runs
a series of multi-point diagnostic tests on the
system, to automatically scan for unacceptable
operating conditions or malfunctions. If such
conditions occur, the system takes corrective
action or stops. The fault code will be shown
on the indoor, outdoor and wired controller displays.
Problems and system status are displayed with
comprehensive diagnostic codes to simplify system
troubleshooting and shorten repair times.
Flexible Design
Gree’s Multi Zone systems have many advantages
for both the property owner and the installer.
Up to five indoor units, powered by a single
outdoor unit, results in flexible zoning solutions
for almost any application. Various styles of
indoor units may be mixed and matched in any
combination to create a unique, multiple zone
heating and cooling system. Choose from Wall
Mount, Ceiling Cassette, Slim Duct, Universal
Floor/Ceiling and Mini Floor Console indoor units.
All are lightweight and compact enough to be
installed on the wall or in any ceiling space.
Intelligent Control
Gree’s Multi Zone components use state-of-the
art intelligent controls to generate the ultimate
in room comfort. G-10 Inverter technology
delivers the exact level of required capacity (from
10% to 100%) to maintain room temperature and
humidity in the comfort range. The optimized PID
controls maintain the room temperature within
less than ±1.0°F of the room setpoint temperature.
The result is a virtually constant room temperature
without the typical fluctuations that occur with a
conventional fixed speed ON/OFF system.
Ductless Saves Money
Realize energy savings by eliminating heat loss
from inecient and leaky ductwork. The average
ducted air distribution system could reduce
overall system eciency by up to 30 percent.
Eliminating ductwork allows you to downsize
equipment while upsizing performance.
Diagnostic
Code
E1
E2
E3
E4
E5
E6
E7
E9
F4
Malfunction
Compressor High Pressure Protection
Indoor Coil Anti-Freeze Protection
Low Pressure Protection
High Discharge Temperature Protection
Compressor High Temperature Protection
Indoor/Outdoor Communication Failure
Heating & Cooling Modes Conflict
Condensate Water Too High
Outdoor Coil Sensor Failure
Cooling
Gree Inverter Control System
Room temp.
Conventional Fixed Speed System
One outdoor unit
can power up to
5 indoor units.

High Eciency G-10 Inverter
The G-10 Inverter uses a broad range of variable frequencies to drive the compressor, marking the
highest level of inverter control technology available today. Unlike conventional technology that
generally regulates room temperature by running at maximum capacity and then shutting o
completely, G-10 Inverter technology eliminates these harsh starts/stops. This cutting edge functionality
results in quicker arrival at desired temperatures and superior maintenance of consistent comfort
levels. Higher eciency and significant energy savings? Yes, it yields those too.
Heat Pump Advantage
Multi Zone heat pumps, powered by the G-10 Inverter, provide the same heating capacity as electric
heat, while using as little as 1/3 the electricity.
Intelligent Defrost
The Intelligent Defrost function increases room comfort and saves energy by eliminating unnecessary
defrost cycles. In heating mode, the control system monitors the outdoor coil for frost buildup,
and the system switches to defrost mode only when frost buildup is actually detected. This avoids
unnecessary and wasteful defrosts.
Time Guard
Among the system’s many safeties is a Time Guard function to prevent rapid cycling of the compressor.
A protective three-minute time delay restricts compressor restarts after shuto.
Gold Fin Condenser
The system’s corrosion-resistant Gold Fin condenser coating (1500hr salt spray rating) is made with
a gold-colored anti-corrosion epoxy. This technology maintains excellent heat transfer properties
while extending coil life against damage from salt air and salt water in seacoast installations.
+Multi Outdoor Units
Each +Multi heat pump is powered by Gree’s energy ecient G-10 Inverter and a variable speed compressor. These units can
heat and cool up to five zones without distribution boxes, and all oer the G-10 advantages of energy savings, noise reduction
and room temperature consistency. Each outdoor coil also features a corrosion-resistant Gold Fin coating to withstand corrosive
environments and to further promote energy eciency.
FEATURES AND BENEFITS
4

FEATURES AND BENEFITS
5
Low Voltage Start Up
Having stable electrical power is not always an option. The Gree Multi Zone units will operate from
170v to 265v which is suitable for unstable power supply areas.
Self-Diagnosis
With an on-board computer using real-time diagnostics, the Gree Multi Zone system helps to
prolong its own life. The automatic diagnosis feature continuously scans for unacceptable operating
conditions or malfunctions. If such conditions occur, the system takes corrective action or stops.
Fault codes are shown on the unit display to facilitate easy troubleshooting and repair.
Agency Listings
All systems are listed with AHRI (Air conditioning, Heating, and Refrigeration Institute) and are
ETL Certified per standards.
7/5 Year Limited Warranty
Enjoy one of the most comprehensive warranties in the industry. Seven (7) years
on compressor and Five (5) years on all parts.

NOMENCLATURE
6
AHRI CERTIFICATION
MODEL NUMBER BRAND AHRI CERTIFICATION
MULTI18HP230V1AO GREE 7084754
MULTI24HP230V1AO GREE 7084908
MULTI30HP230V1AO GREE 7084759
MULTI36HP230V1AO GREE 7084898
MULTI42HP230V1AO GREE 7084899
MULTI48HP230V1AO GREE 7117354
MULTI56HP230V1AO GREE 7117355
+Multi Outdoor Units
MULTI 42 1 A O
Series Designation
MULTI - Multi Zone
Product Type
S - System
O - Outdoor Units
H - Indoor High Wall
D - Indoor Duct
C - Indoor Cassette
F - Indoor Floor/Ceiling
Revision Level
Style/Color Designation
Electrical Rating
230V - 208/230V 60Hz 1PH
115V - 115V 60Hz 1PH
HP 230V
Cooling Capacity
18 - 18,000 BtuH
24 - 24,000 BtuH
30 - 30,000 BtuH
36 - 36,000 BtuH
42 - 42,000 BtuH
Model Type
AC - Cooling Only
HP - Heat Pump
HC - Heat/Cool

PERFORMANCE SPECIFICATIONS
7
Heating
MULTI18HP230V1A 8.2 19,000 (8,530-22,600) 5 °F 80 °F
MULTI24HP230V1A 8.2 29,000 (7,500-35,000) 5 °F 80 °F
MULTI30HP230V1A 8.2 30,500 (7,500-36,000) 5 °F 80 °F
MULTI36HP230V1A 8.2 35,800 (10,663-40,944) 5 °F 80 °F
MULTI42HP230V1A 8.2 44,500 (10,663-47,768) 5 °F 80 °F
MODEL NUMBER HSPF
HEATING CAPACITY
RATED
(BtuH) MIN
RANGE
(BtuH) MAX
OUTDOOR TEMP
OPERATING RANGE
Cooling
MULTI18HP230V1A 16 10.2 18,000 (7,000-21,000) 23 °F 118 °F
MULTI24HP230V1A 16 8.2 26,000 (7,500-33,000) 23 °F 118 °F
MULTI30HP230V1A 16 7.3 29,000 (7,500-34,000) 23 °F 118 °F
MULTI36HP230V1A 16 8.0 34,000 (8,530-34,120) 23 °F 118 °F
MULTI42HP230V1A 16 9.3 41,000 (8,530-46,403) 23 °F 118 °F
MODEL NUMBER SEER EER
COOLING CAPACITY
RATED
(BtuH) MIN
RANGE
(BtuH) MAX
OUTDOOR TEMP
OPERATING RANGE
Notes:
1. Ratings are based on: Cooling Standard: 80°F (26.7°C) db, 67°F (19.4°C) wb air entering indoor unit and 95°F (35°C) db air entering
outdoor unit. Heating Standard: 70°F (21.1°C) db air entering indoor unit and 47°F (8.3°C) db, 43°F (6.1°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 air flows at selected fan speeds.
Legend:
EER - Energy Eciency Ratio
HSPF - Heating Seasonal Performance Ratio
SEER - Seasonal Energy Eciency Ratio
MODEL NUMBER BRAND
MULTI18HP230V1AO EXV 2
MULTI24HP230V1AO EXV 3
MULTI30HP230V1AO EXV 4
MULTI36HP230V1AO EXV 4
MULTI42HP230V1AO EXV 5
NUMBER OF PORTS
FOR INDOOR UNITS

+Multi Outdoor Units
AIR FLOW DATA
SOUND DATA
PRODUCT WEIGHT
MODEL NUMBER
MULTI18HP230V1A 1,530
MULTI24HP230V1A 1,530
MULTI30HP230V1A 1,530
MULTI36HP230V1A 2,177
MULTI42HP230V1A 3,237
AIR FLOW (CFM)
Outdoor Unit
MODEL NUMBER SOUND POWER SOUND PRESSURE
MULTI18HP230V1A 66 dBA 56 dBA
MULTI24HP230V1A 66 dBA 56 dBA
MULTI30HP230V1A 66 dBA 56 dBA
MULTI36HP230V1A 69 dBA 59 dBA
MULTI42HP230V1A 68 dBA 58 dBA
Outdoor Unit
MODEL NUMBER NET OPERATING GROSS SHIPPING
MULTI18HP230V1A 95 lbs. 106 lbs.
MULTI24HP230V1A 135 lbs. 146 lbs.
MULTI30HP230V1A 153 lbs. 165 lbs.
MULTI36HP230V1A 161 lbs. 172 lbs
MULTI42HP230V1A 225 lbs. 247 lbs.
Note:
1. Sound pressure ratings are estimated sound pressure measurements, 3 feet from unit.
2. Sound power ratings are per AHRI 270 and AHRI 350.
PRODUCT WEIGHT
8

REFRIGERATION SPECIFICATIONS & DATA
9
PIPING LENGTH REQUIREMENTS
L=L1
LTOTAL=L1 +L2 +......L
n
L2
+ + +
L
S
...Ln
Refrigerant Charge
Refrigerant Piping Lengths
MULTI18HP230V1A R-410A 48 oz. 33 ft. 0.2 oz./ft.
MULTI24HP230V1A R-410A 78 oz. 98 ft. 0.2 oz./ft.
MULTI30HP230V1A R-410A 78 oz. 131 ft. 0.2 oz./ft.
MULTI36HP230V1A R-410A 102 oz. 131 ft. 0.2 oz./ft.
MULTI42HP230V1A R-410A 169 oz. 164 ft. 0.2 oz./ft.
MULTI18HP230V1A 10 ft. 33 ft. 66 ft.
MULTI24HP230V1A 10 ft. 66 ft. 230 ft.
MULTI30HP230V1A 10 ft. 66 ft. 230 ft.
MULTI36HP230V1A 10 ft. 82 ft. 230 ft.
MULTI42HP230V1A 10 ft. 82 ft. 262 ft.
MODEL NUMBER
MODEL NUMBER
MAX TOTAL PIPE
LENGTH W/O ADDING
REFRIGERANT
FACTORY
SYSTEM
CHARGE
MAX PIPE
LENGTH PER
INDOOR UNIT (Ln)
MAX PIPE
LENGTH PER
INDOOR UNIT (Ln)
MAX TOTAL PIPE
LENGTH PER
INDOOR UNIT (LTOTAL)
REFRIGERANT
TYPE
ADDITIONAL
CHARGE
LEVEL