Seabreeze HIGH EFFICIENCY Series User manual

950-0261revA January 3, 2019
HIGH EFFICIENCY SERIES
MINI-SPLIT
DUAL / TRIPLE / QUAD ZONE / FIVE PORT
INSTALLATION MANUAL
SMZ18H422ZOGB Condenser
SMZ24H421ZOGB Condenser
SMZ30H421ZOGB Condenser
SMZ42H421ZOGB Condenser
SHE9H4ZIGB Evaporator
SHE12H4ZIGB Evaporator
SHE18H4ZIGB Evaporator
SHE24H4ZIGB Evaporator

950-0261revA - 2 - January 3, 2019
CONTENTS
INSTALLATION STEPS.........................................................................................................................................3
NOTES TO INSTALLER......................................................................................................................................... 3
PARTS INCLUDED WITH UNIT.............................................................................................................................4
Wall Bracket....................................................................................................................................................4
Drain Fitting.....................................................................................................................................................4
Remote Control...............................................................................................................................................4
Installation Manual..........................................................................................................................................4
Batteries for Remote Control (2 AAA)............................................................................................................. 4
Terminal Label ................................................................................................................................................4
Remote Control Holder................................................................................................................................... 4
Operation Manual ...........................................................................................................................................4
Drain Tubing 6 ft. ............................................................................................................................................4
INSTALLER SUPPLIED Parts................................................................................................................................ 4
Decorative Channel............................................................................................................................................ 5
Wall Bracket........................................................................................................................................................ 5
INSTALLATION CONSIDERATIONS .................................................................................................................... 5
General Information............................................................................................................................................ 5
System Configuration Options.......................................................................................................................... 6
Selecting locations for the Indoor unit (Wall-mounted)................................................................................. 7
Selecting location for Outdoor unit................................................................................................................... 7
Line set length..................................................................................................................................................... 8
INDOOR UNIT (EVAPORATOR) INSTALLATION ................................................................................................9
OUTDOOR UNIT (CONDENSER) INSTALLATION.............................................................................................11
Maximum Line length and height.....................................................................................................13
CONNECTING LINE SET ....................................................................................................................................14
ELECTRICAL CONNECTION..............................................................................................................................16
Connect the Cable to the Outdoor Unit............................................................................................16
TYPICAL ELECTRICAL WIRING CONNECTIONS.............................................................................................17
Electrical connection of the indoor unit (Wall-mounted)....................................................................18
TYPICAL OUTDOOR INSTALLATION ................................................................................................................19
TUBING CONNECTION.......................................................................................................................................20
System structure............................................................................................................................................... 20
Tubing Connection Size .................................................................................................................................. 20
EVACUATION OF THE REFRIGERATION TUBES AND INDOOR UNIT...........................................................21
Leak Testing...................................................................................................................................................... 21
Vacuum Purge.................................................................................................................................................. 21
START UP TESTING...........................................................................................................................................23
Preparation........................................................................................................................................................ 23
Operational Test............................................................................................................................................... 23
To adjust the differential (temperature between ON and OFF):................................................................ 24
Technical Specifications for DUAL ZONE Outdoor Unit ......................................................................................25
Technical Specifications for TRIPLE ZONE Outdoor Unit ...................................................................................26
Technical Specifications for QUAD ZONE Outdoor Unit......................................................................................27
Technical Specifications for Five Port Outdoor Unit.............................................................................................28
Technical Specifications for WALL MOUNTED Indoor Units...............................................................................29
Technical Specifications for CONSOLE Indoor Units ..........................................................................................30
Technical Specifications for CASSETTE Indoor Units.........................................................................................31
Technical Specifications for FLOOR / CEILING Indoor Units ..............................................................................32
Technical Specifications for DUCTED Indoor Units (9K, 12K, 18K) ....................................................................33
Technical Specifications for DUCTED Indoor Units (21K, 24K)...........................................................................34
TROUBLESHOOTING .........................................................................................................................................35
INDOOR UNIT ERROR CODES..........................................................................................................................36
TERMINAL READINGS ON INDOOR UNIT ........................................................................................................37
OUTDOOR ELECTRICAL SCHEMATICS...........................................................................................................37
FLASH CODES / ERROR CODES ON OUTDOOR PC BOARD ........................................................................40
WARRANTY.........................................................................................................................................................43
Do not dispose this product as unsorted municipal waste. Collection of such waste for special
treatment is necessary.

950-0261revA - 3 - January 3, 2019
INSTALLATION STEPS
•Select the location for the indoor and outdoor unit. (page 7)
•Mount the indoor wall brackets. (page 9)
•Drill wall penetration holes. (page 9)
•Hang the indoor units. (page 10)
•Locate and mount the outdoor unit. (page 13)
•Connect and route line set. (page 14–15)
•Connect the wiring from the indoor unit to the outdoor unit. (Page 16–18)
•Leak test & Evacuate unit. (page 21-22)
•Operational Test of system. (page 23)
NOTES TO INSTALLER
This manual is to aid the qualified HVAC contractor in the installation of this Mini Split system.
Report all shipping damage to the carrier IMMEDIATELY. Check units and box exterior for damage.
Please read and understand these instructions prior to installing the unit, failure to comply with these
instructions may result in improper installation, operation and maintenance, possibly resulting in fire, electrical
shock, property damage, personal injury or death.
CAUTION! Do not use old refrigerant lines with new installation:
For connecting pipes use new and clean piping materials with high pressure fittings made for R410A only. This
air conditioner adopts the new HFC refrigerant (R410A) which does not destroy ozone layer. R410A refrigerant
operates at approximately 1.6 times the pressure of refrigerant R22. Accompanied with the adoption of the new
refrigerant, the refrigeration lubricating oil has also been changed. During installation be sure that water, dust or
foreign material does not enter into the new system. The system must not be left open to the atmosphere for
any reason for any period of time as the systems oil quickly absorbs moisture and will contaminate and damage
the system. To prevent mixing of refrigerant or refrigeration lubricating oil, the sizes of connecting sections of
charging port on main unit and installation tools are different from those used for the conventional refrigerant
units. Accordingly, special tools are required for the new refrigerant (R410A) units. The best and recommended
solution is - do not use the existing line sets because there may be some problems with pressure fittings and
possible impurities in the existing piping.
When installing this unit, an electrical surge suppressor is recommended.
Installers please pass this manual and warranty registration to end user. If technical assistance is required
during installation or start up, please call 704-504-8590 (M-F 8:00 am to 4:30 pm ET) to speak to a Technical
Service Engineer. Before calling please have the Model and Serial numbers available.
Safety Instructions:
1. Carefully read all instructions prior to installation.
2. Check Rating Plate for correct system voltage before installing the unit. Installing and operating a
unit with the incorrect voltage may result in malfunction or other issues and will void the warranty.
3. Units must be connected to a correctly grounded electrical supply.
4. Do not use the units if they have been dropped or otherwise damaged or installed incorrectly.
The manufacturer of the unit will not be liable for any damages caused by failure to comply with the installation
and operating instructions in this manual.
The unit rating plate contains pertinent information for unit operation; please refer to it as required.
Inspect all parts for damage prior to installation and start up. Units must be installed by a qualified HVAC
contractor.

950-0261revA - 4 - January 3, 2019
PARTS INCLUDED WITH UNIT
Wall-mounted Indoor unit
Outdoor Unit
Wall Bracket
Drain Fitting
Remote Control
Installation Manual
Batteries for Remote Control (2 AAA)
Terminal Label
Remote Control Holder
Adapter:
1/2"F to 3/8”M (9510198) with 9K indoor and
12K unit.
3/8”F to 1/2"M (9510197) with 18K indoor unit.
Adapter (for 42K unit only):
1/4"F to 3/8”M (951-0517) –2 pcs,
3/8"F to 5/8”M (951-0516) –3 pcs,
3/8"F to 1/2”M (951-0515) –4 pcs
Operation Manual
Drain Tubing 6 ft.
Note: The outdoor unit can also be connected to different types of indoor units as followings:
Console: 9K - SMZC9H4ZIGX; 12K - SMZC12H4ZIGX, 18K - SMZC18H4ZIGX.
Cassette: 12K - SMZCA12H4ZIGX, 18K - SMZCA18H4ZIGX, 24K –SMZCA24H4ZIGX
Floor / Ceiling: 9K - SMZFC9H4ZIGX; 12K - SMZFC12H4ZIGX, 18K - SMZFC18H4ZIGX,
24K - SMZFC24H4ZIGX.
Ducted: 9K - SMZD9H4ZIGX; 12K - SMZD12H4ZIGX, 18K - SMZD18H4ZIG, 21K –SMZD21H4ZIG,
24K –SMZD24H4ZIG.
For the detail information about the included parts and connecting for above indoor units, please refer to the
manual to be included with each indoor unit.
INSTALLER SUPPLIED PARTS
The following additional Items are required for proper installation.
•Refrigerant line set: Insulated copper tubing:
o9K Indoor –1/4” (liquid line) and 3/8” (suction line).
o12K Indoor –1/4” (liquid line) and 3/8” (suction line)
o18K Indoor –1/4” (liquid line) and 1/2” (suction line).
o24K Indoor –1/4” (liquid line) and 5/8” (suction line).
•Flare nuts 2 ea. required per line, see above (line set) for size.
•Vinyl UV resistant tape.
•Supply Power:
Dual Zone SMZ18H422ZOGB
o25 amp circuit breaker
Triple Zone SMZ24H421ZOGB
o30 amp circuit breaker
Quad Zone SMZ30H421ZOGB
o30 amp circuit breaker
Five Port SMZ42H421ZOGB
o40 amp circuit breaker
•Interconnect wire cable for all units
o4C 14 AWG stranded (Recommended) 16 AWG stranded 4C (min)per indoor unit.
•Refrigerant - R410A required for additional line set charge.
•Sealing putty.
•1/4” to 5/16” access fitting adaptor (PN: QC-S5)
•Mounting hardware - Wall anchors, condenser pad etc.
•Surge protector (highly recommended)

950-0261revA - 5 - January 3, 2019
Note: Condensate pump cannot be powered from the indoor unit. Power connections must be made at outdoor
unit supply power.
Main system breaker or disconnect sized per unit requirements should be mounted adjacent to outdoor unit.
Decorative Channel
Route the bundled piping and wiring to the outdoor unit and connect per the OUTDOOR UNIT installation
instructions. Our Plastic-Duct piping and wiring duct work provides a convenient and professional looking
system to route and protect the pipes and wires. Please see the illustrations below:
Wall Bracket
The outdoor unit may be mounted using a wall bracket (optional) (Our Catalog # BR-440L for up to 440 lbs), or
located in a freestanding position on the floor or pad (preferably slightly elevated).
INSTALLATION CONSIDERATIONS
General Information
Application
Check the application of the unit prior to installation. Certain applications require additional components or
installation parameters.
Computer or Data Server Rooms
These require approximately 12,000 BTU/H capacities per 250 ft²of room size (Based on 8’ ceiling height). Low
ambient controller included.
Offices and Commercial Spaces, Churches etc.
These require approximately 12,000 BTU/H capacity per 400 ft²of room size (Based on 8’ ceiling height).
Residential, Bedrooms, Family Rooms etc.
These require approximately 12,000 BTU/H capacity per 600 ft²of room size (Based on 8’ ceiling height).
Note: This system does not contain a back-up heat source and is NOT recommended as a primary
source of heat.

950-0261revA - 6 - January 3, 2019
System Configuration Options
Dual Zone
SMZ18H422ZOGX (2 indoor units)
Note: Do not mismatch or connect to an outdoor unit other than the designed matched system.
Triple Zone
SMZ24H421ZOGB (2 to 3 indoor units)
Note: 1. Do not mismatch or connect to an outdoor unit other than the designed matched system.
2. This system must be used with a minimum of two indoor units (evaporators).
Quad Zone
SMZ30H421ZOGB (2 to 4 indoor units)
Note: 1. Do not mismatch or connect to an outdoor unit other than the designed matched system.
2. This system must be used with a minimum of two indoor units (evaporators).
SMZ42H421ZOGB (2 to 5 indoor units)
Note: 1. Do not mismatch or connect to an outdoor unit other than the designed matched system.
2. This system must be used with a minimum of two indoor units (evaporators).
ONE INDOOR UNIT
TWO INDOOR UNITS
9K
9K + 9K
12K
9K + 12k
2 INDOOR UNITS
3 INDOOR UNITS
9K + 9K / 9K + 12K / 9K + 18K
12K + 12K / 12K + 18K
9K + 9K + 9K / 9K + 9K + 12K
9K + 12K + 12K
2 INDOOR UNITS
3 INDOOR UNITS
4 INDOOR UNITS
9K + 9K / 9K + 12K
9K + 18K / 12K + 12K
12K + 18K / 18K + 18K
9K + 9K + 9K / 9K + 9K + 12K
9K + 9K + 18K / 9K + 12K + 12K
12K + 12K + 12K
9K + 9K + 9K + 9K
The system matches below are not recommended if all indoor units may require simultaneous continuous duty at full efficiency.
18K + 18K
9K + 12K + 18K
12K + 12K + 18K
9K + 9K + 9K + 12K
9K + 9K + 12K + 12K
2 INDOOR UNITS
3 INDOOR UNITS
4 INDOOR UNITS
5 INDOOR UNITS
9K + 9K
9K + 12K
9K + 18K
12K + 12K
12K + 18K
18K + 18K
12K + 21K
12K + 24K
18K + 21K
18K + 24K
21K + 21K
21K + 24K
9K + 9K + 9K
9K + 9K + 12K
9K + 9K + 18K
9K + 12K + 12K
9K + 12K + 18K
9K + 18K + 18K
12K + 12K + 12K
12K + 12K + 18K
12K + 18K + 18K
9K + 9K + 21K
9K + 9K + 24K
9K + 18K + 21K
9K + 12K + 21K
9K + 12K + 24K
12K + 12K + 21K
9K + 9K + 9K + 9K
9K + 9K + 9K + 12K
9K + 9K + 9K + 18K
9K + 9K + 12K + 12K
9K + 9K + 12K + 18K
9K + 12K + 12K + 12K
9K + 9K + 9K + 9K +9K
The system matches below are not recommended if all indoor units may require simultaneous continuous duty at full efficiency.
24K + 24K
18K + 18K + 18K
9K + 18K + 24K
9K + 21K + 21K
9K + 21K + 24K
12K + 18K + 21K
12K + 18K + 24K
12K + 21K + 21K
12K + 12K + 24K
9K + 9K + 18K + 18K
9K + 12K + 12K + 18K
9K + 12K + 12K + 21K
12K + 12K + 12K + 18K
9K + 9K + 9K + 24K
9K + 9K + 12K + 21K
9K + 9K + 12K + 24K
12K + 12K + 12K + 12K
9K + 9K + 9K + 21K
9K + 9K + 9K + 9K + 18K
9K + 9K + 9K + 12K + 12K
9K+ 9K + 12K + 12K + 12K
9K + 9K + 9K + 9K + 12K

950-0261revA - 7 - January 3, 2019
Spacetothe ceiling
Spacetothe wall
Spacetothe wall
Air outlet side Spacetothe floor
Above Above
6" Above
6"
Above
6" Above
120" 78"
Indoor Models Available:
Indoor Unit Type
Catalog Number
Outline
Remark
Wall-mounted Indoor Unit
SHE9H4ZIGB
SHE12H4ZIGB
SHE18H4ZIGB
SHE24H4ZIGB
Console Indoor Unit
SMZC9H4ZIGX
SMZC12H4ZIGX
SMZC18H4ZIGX
For the detail information about
connecting, please refer to the
specific manual included with
each indoor unit.
Cassette Indoor Unit
SMZCA12H4ZIGX
SMZCA18H4ZIGX
SMZCA24H4ZIGX
Floor / Ceiling Indoor Unit
SMZFC9H4ZIGX
SMZFC12H4ZIGX
SMZFC18H4ZIGX
SMZFC24H4ZIGX
Ducted Indoor Unit
SMZD9H4ZIGX
SMZD12H4ZIGX
SMZD18H4ZIGX
SMZD21H4ZIGX
SMZD24H4ZIGX
Selecting locations for the Indoor unit (Wall-mounted)
1. Determine the best location for mounting the
Indoor unit. Ensure the dimensions requirement
indicated be the arrows are followed.
2. Paying close attention to the air circulation in the
room, these units throw air approximately 15ft.
Ensure that no obstacles impede airflow.
3. Do not mount this unit close to a heat source or a
doorway.
Note：For the detailed information about other types
of indoor units, please refer to the manual to be
included with each indoor unit.
Selecting location for Outdoor unit
1. Determine the best location for mounting the
outdoor unit. Ensure the dimension requirements
indicated by the arrows are followed.
2. Do not mount this unit close to combustibles or
heat sources.
3. Although this unit is fairly quiet when in operation,
do not mount where noise issues could be a
problem.

950-0261revA - 8 - January 3, 2019
Line set length
Locate the Indoor and Outdoor units as close together as possible. Line set height and length cannot exceed
specifications.
Installation Notes:
DUAL ZONE –SMZ18H422ZOGB
1. The maximum total line set length must not exceed 65.6 feet for all units attached to the 18K condenser.
2. Dual Zone model SMZ18H422ZOGB is designed to operate with 1 or 2 indoor units.
3. The Dual Zone design length is 32.8 ft. for each indoor unit. The maximum total line set length for all
units is 65.6 ft. Refrigerant must be added (0.215 oz./ft.) when line set total length exceeds 32.8 ft.
TRIPLE ZONE –SMZ24H421ZOGB
1. The maximum total line set length must not exceed 196.85 feet for all units using the 24K condenser.
2. TRIPLE ZONE model SMZ24H421ZOGB is designed to operate two to three indoor units. DO NOT use
this system with one indoor unit.
3. The TRIPLE Zone design length is 65.6 ft. for each indoor unit. The maximum total line set length for all
units is 196.85 ft. Refrigerant must be added (0.215 oz./ft.) when line set length exceeds 98.4 ft. total.
QUAD ZONE –SMZ30H421ZOGB
1. The maximum total line set length must not exceed 229.7 feet for all units using the 30K condenser.
2. Quad Zone model SMZ30H421ZOGB is designed to operate two to four indoor units. DO NOT use this
system with one indoor unit.
3. The Quad Zone design length is 82 ft. for each indoor unit. The maximum total line set length for all
units is 229.7 ft. Refrigerant must be added (0.215 oz./ft.) when line set length exceeds 131.2 ft. total.
FIVE PORT –SMZ42H421ZOGB
1. The maximum total line set length must not exceed 246.1 feet for all units using the 42K condenser.
2. Five Port model SMZ42H421ZOGB is designed to operate two to five indoor units. DO NOT use this
system with one indoor unit.
3. The Five Port design length is 82 ft. for each indoor unit. The maximum total line set length for all units
is 246.1 ft. Refrigerant must be added (0.215 oz./ft.) when line set length exceeds 131.2 ft. total.
NOTE: An oil trap is recommended if the indoor unit is over 15 feet in height from the outdoor unit.

950-0261revA - 9 - January 3, 2019
INDOOR UNIT (EVAPORATOR) INSTALLATION
1. Clearances and Mounting requirements (Wall-mounted Indoor Unit)
Enough space should be left around the unit to facilitate maintenance. Please view Figure. 1 for recommended
dimensions:
Minimum clearances as noted above. Mount indoor unit with a minimum 6” to ceiling. Indoor unit should
have approximately 16 feet of unobstructed area directly in front for proper air flow for the 9K and 12K indoor
units. The 18K should have approximately 25 feet of unobstructed area directly in front. Line set can exit at the
right or left rear or ends of the indoor unit.
Be sure that the indoor unit is mounted firmly to the wall, and that the wall structure will support the weight of
the unit.
Be sure that the air inlet and outlets are unobstructed.
Be sure that all clearances are as noted in the above Figure 1.
This unit is not designed to be connected to a plug-in outlet.
Do not install this unit near a heat source, direct sunlight, near hazardous chemicals or combustible gases.
2. Mounting the Wall Plate
After determining an acceptable location for the indoor unit,
fasten the wall bracket securely to the wall using the proper
anchors (installer supplied). Be sure the wall bracket is level and
firm to the wall using a minimum of 4 screws or wall anchors.
Failure to mount the wall bracket level can result in improper
condensation drainage.
3. Wall Penetration
Using the measurements in Figure 1, determine the exit point of
the line set. For best results, the right rear is preferred. Left rear
exit of the line set requires that the line set be connected to the
indoor unit prior to mounting it to the wall plate. If desired the line
set may run along the inside wall by removing the cutouts along
the back edge of the case. Line sets mounted along the inside
wall may be covered with Plastic-Duct line set covering (See
page 5).
Cut a 2-5/8” hole slanted downward towards the outside.
Hole diameter is based on wall sleeve made from 2-1/2” PVC
pipe. Wall penetration should be slanted slightly downward to
the outside a minimum of 3/8" to provide proper condensation drainage.
Inside Outside
Wrap with
tape
Figure 1
Figure 2

950-0261revA - 10 - January 3, 2019
Wall sleeve can now be inserted into the hole.
Insert sleeve from the inside to the outside. The
sleeve should be approximately 3/16” longer than
the wall thickness.
4. Identify Line Sets
Mark the line sets as necessary to prevent
crossed connections. Crossed line sets will
prevent proper operation.
5. Identify Interconnect cables
Connect interconnect cable and identify cable at
both ends using labels supplied with outdoor units.
Cable routed to terminal from rear of indoor unit.
6. Mounting the Indoor Unit
If right rear exit of line set is used the indoor
unit can now be mounted. Remove retaining
clips from back of unit to allow access to the line
set stubs. Gently form the line set stubs straight
outward. Use caution when forming the line set;
being careful not to kink the copper lines. See
Figure 3.
7. Connecting Line Set
If installer determines the line set should be
connected at this time, see page 12 for torque
standards.
8. Hang the Indoor Units
Once lines are straight, carefully slide the ends of line set out through the wall sleeve. Hook the indoor unit onto
the top clips of the wall plate. Carefully lower the bottom portion of the indoor unit towards the wall, snapping it
into the clips at the bottom of the unit. See Figure 4.
If using the left rear exit run lines from outside to indoor unit. Form line set to mate to indoor unit stubs and
connect prior to mounting to indoor unit. If necessary run lines along inside wall and carefully remove the proper
cut out from the indoor unit housing. Line sets may be covered with Plastic-Duct for a more professional job
(see page 5).
9. Inspect the Installation
Ensure that the hooks at the top and bottom of the inside
unit are firmly locked in place.
10. Verify the Indoor Unit is Properly Leveled.
Accurate leveling is critical to prevent water damage
during operation.
11. Check the Drain Hose
Observe that the condensate drain pipe does not curve
upward and is in the lower part of the pipe bundle. See
Figure 5.
12. Seal the Hole
Fill the gap between the wall sleeve and the line set with
sealing putty (installer provided) to prevent outside air and
moisture from entering room (see Figure 6).
Note：For the detail information about other types of
indoor unit, please refer to the manual to be included with
each Indoor unit.
Inside Outside
Seal Putty
Drain hose
Curve upward
Figure 5
Pipelines of indoor unit
Drain pipe Rear pipe
Figure 4
Figure 6
Figure 3
See page 15,
Figure 13

950-0261revA - 11 - January 3, 2019
OUTDOOR UNIT (CONDENSER) INSTALLATION
Outdoor unit dimension
SMZ18H422ZOGB –Dual Zone
SMZ24H421ZOGB –Triple Zone / SMZ30H421ZOGB –Quad Zone

950-0261revA - 12 - January 3, 2019
SMZ42H421ZOGB –Five Port
Outdoor unit location
The location must allow easy servicing and provide good air circulation as shown in the illustration below:
20"
40"
79"
20"
20"20"
79"
Figure 7
Top View
Side View

950-0261revA - 13 - January 3, 2019
Mounting the Outdoor (condenser) Unit
Follow the clearance guidelines in the diagram above.
Clearance distances are minimums. Minimum
clearance above unit is 12" to allow for servicing.
Install drain plug as in Figure 8 (included). Drain hose
not included.
Do not mount this unit close to combustibles or heat
sources.
Although this unit is fairly quiet when in operation, do
not mount this unit where noise issues could be a
problem.
Mount unit on an equipment pad or solid surface, install drain plug and tube as necessary. If wall mounting is
necessary a wall mount bracket may be purchased (BR-440L) for this purpose. Follow mounting instructions for
bracket to ensure safe installation.
Anchor bolts of the proper size and type (Installer provided) must be used.
For best results mount this unit as close as possible to the evaporators. Check maximum line length
specifications before mounting.
Maximum Line length and height
ba
e
d
c
L4L3L2 L5L1
Outdoorunit
Height difference between indoor unit and outdoor unit H1
Height difference between indoor units H2
Indoor unit
Indoor unit
Equivalent length of the farthest fitting pipe Lx
Connection Length
SMZ18H422ZOGB
DUAL ZONE
SMZ24H421ZOGB
TRIPLE ZONE
SMZ30H421ZOGB
QUAD ZONE
SMZ42H421ZOGB
FIVE PORT
Total Length
L1+L2 ≤ 65.6 ft.
L1+L2+L3 ≤ 196.85 ft.
L1+L2+L3+L4 ≤ 229.7 ft.
L1+L2+L3+L4+L5 ≤ 246.1 ft.
Lx - Max. Length for any
indoor unit
32.8 ft.
65.6 ft.
82 ft.
82 ft.
H1 - Max. Height between
each indoor and the outdoor
unit
32.8 ft.
32.8 ft.
49.2 ft.
49.2 ft.
H2 - Max. Height difference
between indoor units
32.8 ft.
32.8 ft.
24.6 ft.
24.6 ft.
MAXIMUM LINE LENGTH AND / OR HEIGHT MUST NOT BE EXCEEDED!
Figure 8
Figure 9

950-0261revA - 14 - January 3, 2019
CONNECTING LINE SET
CAUTION! IMPROPER CONNECTION OF THE LINE SETS WILL RESULT IN IMPROPER OPERATION OF
THE SYSTEM. MARK EACH LINE SET AND WIRING FOR IDENTIFICATION. IDENTIFICATION LABELS
ARE INCLUDED WITH EACH OUTDOOR UNIT. ENSURE THAT THE WIRING AND THE LINE SETS ARE
ROUTED TO THE PROPER INDOOR ZONE.
INDOOR UNITS
Indoor Unit Type
Capacity
Liquid Line
Suction Line
Adapter
Wall Mounted
9K, 12K
1/4”
3/8”
1/2” F to 3/8” M adapter included
18K
1/4”
1/2”
3/8” F to 1/2” M adapter included
24K
1/4”
5/8”
N/A
Console, Cassette
Floor / Ceiling,
Ducted
9K, 12K
1/4”
3/8”
1/2” F to 3/8” M adapter included
18K
1/4”
1/2”
3/8” F to 1/2” M adapter included
21K, 24K
3/8”
5/8”
N/A
OUTDOOR UNITS
Refrigerant Tubing
1. After the outside unit is secured to the mounting location (Pad, Wall Brackets, etc.), route the line set(s)
from the Indoor unit to the outdoor unit, and secure with clamps or Plastic-Duct as required.
Installation Notes:
The SMZ18H422ZOGB Dual Zone unit is designed to run one or two indoor units. (See page 6)
The SMZ24H421ZOGB Quad Zone unit is designed to run two or three units. DO NOT use this system
with one indoor unit. (See page 6)
The SMZ30H421ZOGB Quad Zone unit is designed to run two, three, or four indoor units. DO NOT
use this system with one indoor unit. (See page 6)
The SMZ42H421ZOGB Five Port unit is designed to run two, three, four or five indoor units. DO NOT
use this system with one indoor unit. (See page 6)
The outdoor unit is supplied with a sufficient refrigerant charge of R410A for a maximum Design
Length, no extra refrigerant required. Beyond this length additional refrigerant is required and must be
weighted in. (see specifications)
Indoor unit contains a small quantity of nitrogen. DO NOT remove the caps until the tubing is ready to be
installed.
NOTE: An oil trap is recommended to be installed if the indoor unit is over 15 feet in height from the outdoor
unit. To prevent kinking, bend tubes using a tubing tool.
CAUTION! WHEN REMOVING THE VALVE CAPS, DO NOT STAND IN FRONT OF VALVES, AS THE
SYSTEM IS UNDER HIGH PRESSURE.
CAUTION! DO NOT BRAZE TUBING OR USE THREAD SEALANT. USE FLARE CONNECTIONS ONLY.
Outdoor Unit Type
Port A
liquid-suction
Port B
liquid-suction
Port C
liquid-suction
Port D
liquid-suction
Port E
Liquid-suction
18K Dual Zone
1/4”-3/8”
1/4”-3/8”
N/A
N/A
N/A
24K Triple Zone
1/4”-3/8”
1/4”-3/8”
1/4”-3/8”
N/A
N/A
30K Quad Zone
1/4”-3/8”
1/4”-3/8”
1/4”-3/8”
1/4”-3/8”
N/A
42K Five Port
(adapters included)
1/4”-3/8”
1/4”-3/8”
1/4”-3/8”
1/4”-3/8”
1/4”-3/8”
Adapter may be
bent up to a 90
degree angle if
necessary.
Figure 10
Adaptor

950-0261revA - 15 - January 3, 2019
2. Line set can now be cut (if necessary), to the proper length. Cut the tubing a little longer than measured
distance. Completely remove all burrs from the cross cut section of tubing. Do not allow debris to fall into
copper tube. It is extremely important to clean the copper tubing prior to connecting to system.
3. Install flare nuts and follow standard flaring procedures. Use proper flaring tools for a leak proof connection.
If a flared section is defective, cut it off and follow standard flaring procedures again.
4. After cutting to length, creating the flares and before connecting the line set, clear all foreign materials by
blowing nitrogen through copper tubing. Align the center of the tubing flare with its mating connector. Screw
on the flare nut by hand and tighten the nut with a spanner and torque wrench. See Figure 11.
Note: Exceeding the tightening torque will damage the flare surface.
Tightening Torque Table:
1/4”
11 –22
lbs ft.
3/8”
23 –29
lbs ft.
1/2”
33 –37
lbs ft.
5/8”
44 –48
lbs ft.
5. Verify that the proper line set is being connected to
the intended port of the outdoor unit. Connect the
line sets to their appropriate fittings on the outside
unit, and torque the flare fittings per the table above.
6. Bundle all lines, control cables and condensation
drain together. Be sure to leave ample length on
control cable to allow for termination. Bundle can be
secured together using vinyl tape.
Note: Condensation drain MUST be placed at the
bottom of the bundle as shown in the Figure 13.
Failure to do so may cause evaporator to drain
improperly.
7. Line sets must have each tube insulated separately,
including their unions with at least 1/4” thick
insulation. Wrap the refrigeration tubing, drain hose,
and electrical cables with a UV protected vinyl tape.
Overlap insulation at all refrigeration joints per
Figure 14.
Note: Completely wrap line set with insulation.
Insulation joints may overlap if desired.
CAUTION! Failure to completely wrap both lines with insulation may result in damage from condensation
forming on lines, and dripping onto walls, ceilings, etc.
Vinyl tape
Connectionpipe
(h ea t insu la tio n)
Indoor unitpiping
Bindthe s tog ether
sotha tthe re is no gap
pipe .
Overla pthe insulation
Torquewrench
Spanner
Flarenut
Joint Connectionpipe
Suction Line
Liquid Line
Condensation Drain
Control cable
Figure 12
DO NOT CROSS WIRES OR CROSS
CONNECT SYSTEMS TO OUTDOOR
UNIT.
Figure 11
Figure 13
Figure 14

950-0261revA - 16 - January 3, 2019
ELECTRICAL CONNECTION
WARNING! Improper wiring between the inside units and the outside unit can cause serious damage to
the system, and the risk of personal injury or fire. Use caution when connecting the wiring
to ensure that the wires are connected properly.
DO NOT USE THERMOSTAT WIRE TO CONNECT OUTDOOR TO INDOOR UNIT!
NOTES:
- Electrical wiring and connections should be made by qualified electricians in accordance with National and
Local electrical codes and regulations.
- Proper grounding is a must.
- Voltage should not vary beyond +/- 10% of the rated voltage.
- See the specifications page for proper wire sizes and circuit breaker sizes.
- Connect the control cables according to the diagrams on page 17.
- Make power connections per diagram on page 17.
- Remove the handle on the right side of the outdoor unit.
- Remove panel on the right front.
- Remove the cable clamp and connect the power connection cable to the terminal.
- Wiring should be terminal to terminal and to correct indoor unit. Do not cross wires!
- Reattach the cable clamp.
- Reinstall the handle.
Connect the Cable to the Outdoor Unit
For models: SMZ18H422ZOGB, SMZ24H421ZOGB, SMZ30H421ZOGB and SMZ42H421ZOGB.
1. Remove cable knock-outs (A water tight cable strain relief or conduit is recommended here).
2. Remove screws to take off side panel.
3. Feed cable wire through knock-out holes.
4. Connect the wires to the terminals. (See wiring diagram Figure 17).
5. Replace side panel with the screws.
6. Secure wire cables.
If a condensate pump is needed it should be connected to the supply power at the Outdoor Unit

950-0261revA - 17 - January 3, 2019
TYPICAL ELECTRICAL WIRING CONNECTIONS
Typical electrical wiring for the Dual and Quad Zone units. (Dual Zone units use “A” and “B” connections, Triple
Zone units use “A”, “B”, “C” connections, Quad Zone unit use “A”, “B”, “C” and “D” connections, Five Port unit
use “A”, “B”, “C”, “D” and “E”).
Wiring identification labels are supplied with each outdoor unit.
The SMZ30H421ZOGX Quad Zone unit is designed to run two, three, or four indoor units. DO NOT
use this system with one indoor unit. (See page 6)
The SMZ42H421ZOGX Five Port unit is designed to run two, three, four or five indoor units. DO NOT
use this system with one indoor unit. (See page 6)
Figure 15

950-0261revA - 18 - January 3, 2019
Figure 17
Electrical connection of the indoor unit (Wall-mounted)
Open the front cover by pressing inward on the sides of the cover near the bottom to release, then pull bottom
of cover outwards.
Feed the cable wire in from the rear of unit.
Open the electric box cover; connect the wires to the terminal strip individually according to the wiring diagram
above. Ensure that the colors of the wires and terminal No. are the same as the wiring diagram. Tighten
terminal screws for safe connections.
DO NOT CROSS WIRES
DO NOT CONNECT CONDENSATE PUMP TO THE INDOOR UNIT
After wiring, replace the electric box cover, and then close the front panel by pressing the corners inward to
latch.
Note：For detailed information about other types of indoor units, please refer to the manual packed with each
indoor unit.
Screws
ConnectingCable
FrontPanel
TerminalBoard
ElectricBox
Cover
Cabletobefed
fromrearof unit
Figure 16
Will vary by Model.
Identify each end of the interconnect cable and each of the
conductor using the labels provided. Units A, B, C, D and E.

950-0261revA - 19 - January 3, 2019
TYPICAL OUTDOOR INSTALLATION

950-0261revA - 20 - January 3, 2019
TUBING CONNECTION
System structure
For these multi-zone air conditioning system, the outdoor units are able to operate up to five indoor units which
can be different types as shown above. The console indoor unit can be controlled only by the remote control.
The other indoor units can be controlled by either the remote control or the wall control. The outdoor unit will run
if any of the indoor units sends a request for heating or cooling. All indoor units will stop once the outdoor unit is
turned off.
Tubing Connection Size
INDOOR unit copper tubing
1/4"
3/8"
1/2"
5/8"
Adapter Included
Adapter Size
Wall-Mounted
Indoor Unit
9K / 12K
x
x
Yes
1/2" F to 3/8" M
18K
x
x
Yes
3/8" F to 1/2" M
24K
x
x
No
Cassette,
Floor/ceiling,
Console, Ducted
Indoor Unit
9K
x
x
Yes
1/2" F to 3/8" M
12K
x
x
Yes
1/2" F to 3/8" M
18K
x
x
Yes
3/8" F to 1/2" M
21K
x
x
No
24K
x
x
No
OUTDOOR unit connection sizes
Terminal
A
Terminal
B
Terminal
C
Terminal
D
Terminal
E
Adapter Included
18K (Dual Zone)
2 - 1/4", 3/8"
x
x
24K (Triple Zone)
3 - 1/4", 3/8"
x
x
x
30K (Quad Zone)
4 - 1/4", 3/8"
x
x
x
x
42K (Five Port)
5 - 1/4", 3/8"
x
x
x
x
x
3/8"F to 1/2”M -4 pcs,
3/8"F to 5/8”M -3 pcs,
1/4"F to 3/8”M -2 pcs,
Figure 19
Wall Mounted
Indoor Unit
Cassette
Indoor Unit
Ducted
Indoor Unit
Outdoor Unit
Floor Ceiling/
Indoor Unit
Console
Indoor Unit