Seabreeze SMZ18H46ZOGX User manual

950-0195revJ December 3, 2015
HIGH EFFICIENCY SERIES
MINI-SPLIT
DUAL / TRIPLE / QUAD ZONE
INSTALLATION MANUAL
SMZ18H46ZOGX Condenser
SMZ24H46ZOGX Condenser
SMZ30H46ZOGX Condenser
SHE9H4ZIGX Evaporator
SHE12H4ZIGX Evaporator
SHE18H4ZIGX Evaporator
SHE9H4ZIGB Evaporator
SHE12H4ZIGB Evaporator
SHE18H4ZIGB Evaporator

950-0195revJ - 2 - December 3, 2015
TABLE OF CONTENTS
Installation Steps
3
Notes to Installer
3
Parts Included with Indoor Unit
4
Installer Supplied Parts
4
Condensate Pump
4
Decorative Channel
5
Wall Brackets
5
Installation Considerations
5
General Information
5
System Configuration Options
6
Select Locations for Indoor Unit
7
Select Locations for Outdoor Unit
7
Line Set Length
7
Indoor Unit (Evaporator) installation
8
Outdoor Unit (Condenser) installation
10
Connecting Line Set
11
Electrical Connection –Notes
13
Connect the Cable to the Outdoor Unit –Notes
13
Typical Electrical Wiring Connections
14
Connect the Cable to the Indoor Unit –Diagram
15
Typical Outdoor Installation (Adaptor Explanation)
16
Evacuation of the Refrigeration Tubes and Indoor Unit
17
Leak Testing
17
Vacuum Purge
17
Suction Port Connections
18
Start Up Testing
19
Preparation
19
Operational Test
19
Adjust Differential
20
Outdoor Unit Specifications (Dual Zone)
21
Outdoor Unit Specifications (Triple Zone)
22
Outdoor Unit Specifications (Quad Zone)
23
Indoor Unit Specifications (Wall Mounted)
24
Indoor Unit Specifications (Wall Mounted)
25
Indoor Unit Specifications (Console)
26
Indoor Unit Specifications (Cassette)
27
Indoor Unit Specifications (Floor / Ceiling)
28
Indoor Unit Specifications (Ducted)
29
Troubleshooting
30
Error Codes
31
Outdoor Electrical Diagram (Dual)
32
Outdoor Electrical Diagram (Triple)
33
Outdoor Electrical Diagram (Quad)
33
Flash Codes on Outdoor PC Board
34
Tubing Connection Diagram
37
Warranty and Technical Support
38
Do not dispose this product as unsorted municipal waste. Collection of such waste for special
treatment is necessary.

950-0195revJ - 3 - December 3, 2015
Installation Steps:
Select the location for the indoor and outdoor unit. (page 7)
Mount the indoor wall brackets. (page 8)
Drill wall penetration holes. (page 8)
Hang the indoor units. (page 9)
Locate and mount the outdoor unit. (page 10)
Connect and route line set. (page 11 –12)
Connect the wiring from the indoor unit to the outdoor unit. (Page 13 –16)
Evacuate line set. (page 17-18)
Operational Test of system. (page 19)
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.

950-0195revJ - 4 - December 3, 2015
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 - Dual Zone requires 1/2"F to 3/8”M
(9510198) with 9K and/or 12K indoor unit(s).
Quad Zone requires 3/8”F to 1/2"M (9510197)
with 18K and/or 12K indoor unit(s).
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.
Floor / Ceiling: 9K - SMZFC9H4ZIGX; 12K - SMZFC12H4ZIGX; 18K - SMZFC18H4ZIGX.
Ducted: 9K - SMZD9H4ZIGX; 12K - SMZD12H4ZIGX; 18K - SMZD18H4ZIG.
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 1/2” (suction line) for SHE12H4ZIGX;
1/4” (liquid line) and 3/8” (suction line) for SHE12H4ZIGB
o18K Indoor –1/4” (liquid line) and 1/2” (suction line).
Flare nuts 2 ea. required per line, see above (line set) for size.
Vinyl UV resistant tape.
Supply Power:
Dual Zone SMZ18H46ZOGX
o20 amp circuit breaker
Triple Zone SMZ24H46ZOGX
o30 amp circuit breaker
Quad Zone SMZ30H46ZOGX
o45 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)
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.

950-0195revJ - 5 - December 3, 2015
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.

950-0195revJ - 6 - December 3, 2015
System Configuration Options
Dual Zone
SMZ18H46ZOGX (2 indoor units)
Note: Do not mismatch or connect to an outdoor unit other than the designed matched system.
Triple Zone
SMZ24H46ZOGX (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
SMZ30H46ZOGX (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).
Indoor Models Available:
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
Indoor Unit Type
Catalog Number
Outline
Remark
Wall-mounted Indoor Unit A
SHE9H4ZIGX
SHE12H4ZIGX
SHE18H4ZIGX
Wall-mounted Indoor Unit B
SHE9H4ZIGB
SHE12H4ZIGB
SHE18H4ZIGB
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
Floor / Ceiling Indoor Unit
SMZFC9H4ZIGX
SMZFC12H4ZIGX
SMZFC18H4ZIGX
Ducted Indoor Unit
SMZD9H4ZIGX
SMZD12H4ZIGX
SMZD18H4ZIGX

950-0195revJ - 7 - December 3, 2015
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.
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 –SMZ18H46ZOGX
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 SMZ18H46ZOGX is designed to operate with 1 or 2 indoor units.
3. The Dual Zone max design length is 49.2 ft. for the total of all indoor units. The maximum total line set
length for all units is 65.6 ft. Refrigerant must be added (0.22 oz/ft.) when line set total length exceeds 49.2
ft.
TRIPLE ZONE –SMZ24H46ZOGX
1. The maximum total line set length must not exceed 229.7 feet for all units using the 24K condenser.
2. TRIPLE ZONE model SMZ24H46ZOGX is designed to operate two to three indoor units. DO NOT use
this system with one indoor unit.
3. The TRIPLE Zone max design length is 65.6 ft. for each indoor unit. The maximum total line set length
for all units is 229.7 ft. Refrigerant must be added (0.22 oz/ft.) when line set length exceeds 98 ft total.
QUAD ZONE –SMZ30H46ZOGX
4. The maximum total line set length must not exceed 229.7 feet for all units using the 30K condenser.
5. Quad Zone model SMZ30H46ZOGX is designed to operate two to four indoor units. DO NOT use this
system with one indoor unit.
6. The Quad Zone max design length is 65.6 ft. for each indoor unit. The maximum total line set length for
all units is 229.7 ft. Refrigerant must be added (0.22 oz/ft.) when line set length exceeds 98 ft total.
NOTE: An oil trap is mandatory if the indoor unit is over 15 feet in height from the outdoor unit.

950-0195revJ - 8 - December 3, 2015
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
Figure 1

950-0195revJ - 9 - December 3, 2015
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. 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 units.
Inside Outside
Seal Putty
Inside Outside
Seal Putty
Drain hose
Curve upward
Figure 5
Pipelines of indoor unit
Drain pipe Rear pipe
Figure 4
Figure 6
Figure 3

950-0195revJ - 10 - December 3, 2015
OUTDOOR UNIT (CONDENSER) INSTALLATION
The location must allow easy servicing and provide good air circulation as shown in the illustration below:
12" or above
Space to the wall
12" or above
20" or above
79" or above
(Air inlet side)
(Air outlet side)
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 7a
(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 / OR HEIGHT MUST NOT BE EXCEEDED!
Figure 7
Figure 7a

950-0195revJ - 11 - December 3, 2015
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
* USED ONLY ON 42,000 BTU OUTDOOR UNIT
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 SMZ18H46ZOGX Dual Zone unit is designed to run one or two indoor units. (See page 6)
The SMZ24H46ZOGX Quad Zone unit is designed to run two or three units. DO NOT use this system
with one indoor unit. (See page 6)
The SMZ30H46ZOGX 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 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.
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.
INDOOR unit copper tubing
1/4"
3/8"
1/2"
Adapter Included
Adapter Size
Wall-Mounted Indoor
Unit A
9K
x
x
Yes
1/2" F to 3/8" M*
12K
x
x
Yes
3/8" F to 1/2" M
18K
x
x
Yes
3/8" F to 1/2" M
Wall-Mounted Indoor
Unit B
Console, Cassette,
Floor/Ceiling, Ducted
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
Outdoor Unit
Type
Port A
liquid-suction
Port B
liquid-suction
Port C
liquid-suction
Port D
liquid-suction
18K Dual Zone
1/4”-3/8”
1/4”-3/8”
N/A
N/A
24K Triple Zone
1/4”-3/8”
1/4”-3/8”
1/4”-3/8”
N/A
30K Quad Zone
1/4”-3/8”
1/4”-3/8”
1/4”-3/8”
1/4”-3/8”
Figure 8
Adaptor
Adaptor may be
bent up to a 90
degree angle if
necessary.

950-0195revJ - 12 - December 3, 2015
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 10.
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. 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 12.
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 13.
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
(heat insulation)
Indoor unitpiping
Bind the s tog ether
sotha t th ere is n oga p
pipe .
Overlapthe insulation
Torquewrench
Spanner
Flarenut
Joint Connectionpipe
Figure 11
Figure 12
Suction Line
Liquid Line
Condensation Drain
Control cable
Figure 13
Figure 10
DO NOT CROSS WIRES OR CROSS
CONNECT SYSTEMS TO OUTDOOR
UNIT.
Figure 9

950-0195revJ - 13 - December 3, 2015
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 insure 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 14.
- Make power connections per diagram on page 14.
- 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: SMZ18H46ZOGX, SMZ24H46ZOCX and SMZ30H46ZOCX.
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 15).
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

950-0195revJ - 14 - December 3, 2015
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 units use “A”, “B”, “C” and “D” connections).
Wiring identification labels are supplied with each outdoor unit.
The SMZ30H46ZOGX 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)
Figure 15

950-0195revJ - 15 - December 3, 2015
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, and D.

950-0195revJ - 16 - December 3, 2015

950-0195revJ - 17 - December 3, 2015
(Included with indoor unit.)
(Included with indoor unit.)

950-0195revJ - 18 - December 3, 2015
EVACUATION OF THE REFRIGERATION TUBES AND INDOOR UNIT
After connecting the indoor and outdoor units, evacuate the air from the line set and the indoor unit as follows:
Leak Testing - Indoor units are nitrogen pre-charged, however they should be pressure tested before
installation.
1. Connect the charging hoses to the low side of the manifold and the service port of the suction valve (See
figure 20b).
2. Connect the center hose of the manifold valve to a nitrogen source.
NOTE: The nitrogen gas cylinder is used in a vertical standing position.
3. Charge system with nitrogen to 150 PSI and check for leaks,
using standard industry leak detection methods.
4. Pay attention to possible evaporator leaks that may have occurred
during shipping or installation.
5. Remove the nitrogen by opening the manifold valves.
Perform previous steps 1 to 4 on all indoor units. (See figure 20)
Vacuum Purge
1. Connect the center hose of the manifold valves to a vacuum pump, and open fully the low and high pressure
sides of the manifold valves.
DO NOT OPEN SERVICE PORT VALVES
2. Turn on the vacuum pump. Evacuate system for about 30 minutes and confirm that the vacuum reading is
500 microns.
3. Close all manifold valves and turn off the vacuum pump. After waiting for 30 minutes, confirm that the
vacuum reading of the manifold has not changed. If the vacuum reading has changed, there is a leak that must
be found and repaired before continuing.
Perform previous steps 1 to 3 on all indoor units. Then proceed with the next step (4).
4. Remove the valve caps from all valves. Slowly open each liquid line fully using a hexagonal Allen wrench.
Use the same procedure on the suction valve. Open all valves to the full back seat position.
5. Securely tighten the caps back onto liquid and suction the valves.
6. Check for gas leaks from all connections. Test with an electronic leak detector, or with soapy water and
check for bubbles. Be sure to wipe off the soap with a clean cloth after leakage test.
Shut-off Valve
Flare Nut
Nut
Service Port Valve Core
Fig. 19

950-0195revJ - 19 - December 3, 2015
SUCTION PORT CONNECTIONS

950-0195revJ - 20 - December 3, 2015
START UP TESTING
Preparation
1. Double check that all wiring has been properly connected.
2. Check that tubing has been properly connected and ensure the suction and liquid side service valves are
fully open.
3. Review remote control functions in the Operators manual.
Note: A wall control is optional MSWCH (243-7002). For the details of installation and operation, please refer
to the manual to be placed with the wall control.
Operational Test
Note: The cooling test may be performed if the outdoor temperature is between 14 ºF to 118 ºF.
The heating test may be performed if the outdoor temperature is between 5 ºF to 81 ºF.
1) With the unit turned on, press the mode button and select “COOL” mode for all indoor units (see Note
above). Allow 3 minutes for compressor delay timer to expire.
2) Press the “–” button until it reads 61 ºF on all indoor units.
3) Operate indoor units for no less than 15 minutes in the cooling mode.
4) Press the “FAN” button to select high fan speed on all units.
5) After operating for several minutes, check for cool air flow. Outlet temperature should be 20 to 24 ºF lower
than ambient temperature. (If outlet temperature is out of range contact technical support).
6) If cooling mode is operating properly, check for proper heat operation.
7) Press the mode button to select “HEAT” (see Note above).
8) Press the “+” button until it reads 86 ºF.
9) Allow approximately 5 minutes for compressor delay timer to expire before unit will operate.
10) The indoor fan will turn on and heat should be present.
11) If unit(s) does not perform as described, see the troubleshooting section.
12) All functions should be tested for operation, see Operation manual. Review remote control functions with
owner.
13) Emergency operation button –test to confirm proper operation (see Operators manual).
Notes:
1. Indoor fan will not turn off in the cooling mode.
2. Indoor fan will turn off in heating mode shortly after the set point has been satisfied.
3. Unit may require several minutes to confirm the condition of temperature set point and system functions.