Ingersoll-Rand 4TVW0007B100NC Installation and operating instructions

SAFETY WARNING
Only qualified personnel should install and service the equipment. The installation, starting up, and
servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific
knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person could
result in death or serious injury. When working on the equipment, observe all precautions in the literature
and on the tags, stickers, and labels that are attached to the equipment.
November 2014
Installation, Operation,
and Maintenance
Variable Refrigerant Flow System
High-Wall Indoor Unit Series
(with Factory-Installed EEV)
Models: 4TVW0007B100NC, 4TVW0009B100NC, 4TVW0012B100NC,
4TVW0018B100NC, 4TVW0020B100NC, 4TVW0024B100NC
VRF-SVX30C-EN

2
Introduction
Read this manual thoroughly before operating or servicing
this unit.
Warnings, Cautions, and Notices
Safety advisories appear throughout this manual as
required. Your personal safety and the proper operation of
this machine depend upon the strict observance of these
precautions.
Important Environmental Concerns
Scientific research has shown that certain man-made
chemicals can affect the earth’s naturally occurring
stratospheric ozone layer when released to the
atmosphere. In particular, several of the identified
chemicals that may affect the ozone layer are refrigerants
that contain Chlorine, Fluorine and Carbon (CFCs) and
those containing Hydrogen, Chlorine, Fluorine and Carbon
(HCFCs). Not all refrigerants containing these compounds
have the same potential impact to the environment. Trane
advocates the responsible handling of all refrigerants-
including industry replacements for CFCs such as HCFCs
and HFCs.
Important Responsible Refrigerant Practices
Trane believes that responsible refrigerant practices are
important to the environment, our customers, and the air
conditioning industry. All technicians who handle
refrigerants must be certified. The Federal Clean Air Act
(Section 608) sets forth the requirements for handling,
reclaiming, recovering and recycling of certain refrigerants
and the equipment that is used in these service procedures.
In addition, some states or municipalities may have
additional requirements that must also be adhered to for
responsible management of refrigerants. Know the
applicable laws and follow them.
Copyright
This document and the information in it are the property of
Trane and may not be used or reproduced in whole or in
part, without the written permission of Trane. Trane
reserves the right to revise this publication at any time and
to make changes to its content without obligation to notify
any person of such revision or change.
Trademarks
All trademarks referenced in this document are the
trademarks of their respective owners.
The three types of advisories are defined as follows:
WARNING Indicates a potentially hazardous
situation which, if not avoided, could
result in death or serious injury.
CAUTIONsIndicates a potentially hazardous
situation which, if not avoided, could
result in minor or moderate injury. It
could also be used to alert against
unsafe practices.
NOTICE Indicates a situation that could result in
equipment or property-damage only.
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or serious
injury. All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements for
field wiring installation and grounding as described in
NEC and your local/state electrical codes.
WARNING
Personal Protective Equipment (PPE)
Required!
Failure to wear proper PPE for the job being undertaken
could result in death or serious injury. Technicians, in
order to protect themselves from potential electrical,
mechanical, and chemical hazards, MUST follow
precautions in this manual and on the tags, stickers,
and labels, as well as the instructions below:
• Before installing/servicing this unit, technicians
MUST put on all PPE recommended for the work
being undertaken. ALWAYS refer to appropriate
MSDS sheets and OSHA guidelines for proper PPE.
• When working with or around hazardous chemicals,
ALWAYS refer to the appropriate MSDS sheets and
OSHA guidelines for information on allowable
personal exposure levels, proper respiratory
protection, and handling recommendations.
• If there is a risk of arc or flash, technicians MUST put
on all PPE in accordance with NFPA 70E or other
country-specific requirements for arc flash
protection, PRIOR to servicing the unit.
VRF-SVX30C-EN

VRF-SVX30C-EN 3
Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Warnings, Cautions, and Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Important Environmental Concerns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Important Responsible Refrigerant Practices . . . . . . . . . . . . . . . . . . . . . . . 2
Copyright . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Model Number Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Preparing for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Location Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Service Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Mounting the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Purging the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Installing Refrigerant Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Pipe Cutting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Nitrogen Flushing While Brazing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Flared Pipe Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Leak Testing Pipe Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Installing the Drain System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Refrigerant Pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Drainage Hose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Wiring the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Communication Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Using the VRF Wireless Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
The 2-Digit Segments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Configuration Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Mode 2: Option Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Mode 5: Option Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Mode A: Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Mode d: Specific Digit Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

4VRF-SVX30C-EN
Table of Contents
Operating Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Internal Protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Operating Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Operating Mode for Heat Pump Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Cleaning the Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Cleaning the Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Periodic Maintenance Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Warranty for VRF Systems and Related Accessories . . . . . . . . . . . . . . . . . . . . 33
Basic Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Exclusions and Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

VRF-SVX30C-EN 5
Model Number Description
Digit 1: Refrigerant
Digit 2: Brand name
Digit 3: System type
Digit 4: Configuration Type
Digit 5: Reserved for future use
Digit 6, 7, 8: Nominal capacity (Btu/h x 1,000)
Digit 9: Major development sequence
Digit 10: Electric power supply characteristics
Digit 11, 12: Reserved for future use
Digit 13: Region of sale
Digit 14: Minor design sequence
4TVW0018B100NC
1234567891011121314
4 = R410A
T = Trane
V = Variable Refrigerant Flow
W = High Wall Type
0 = Not currently used
007 = 7,000 Btu/h 020 = 20,000 Btu/h
009 = 9,000 Btu/h 024 = 24,000 Btu/h
012 = 12,000 Btu/h
018 = 18,000 Btu/h
B = Second development sequence
1 = 208–230/60/1
0 = Not currently used
N = North America (UL or ETL)
B = Second design sequence
C = Third design sequence

6VRF-SVX30C-EN
Preparing for Installation
Preparing for Installation
Accessories
In addition to product literature, the following accessories are supplied with this unit. The type and
quantity may differ, depending on the model.
Location Considerations
When deciding on a location for the indoor unit, the following factors must be considered:
• The air inlet and outlet must be unobstructed.
• The wall or ceiling must support the weight of the unit.
• The wall or ceiling must not be subject to vibration.
• Pre-plan for easy and short routing of the refrigerant tubing and wiring to the outdoor unit.
• The air must circulate freely in the area to be cooled/heated.
• Sufficient clearance must be maintained around the unit.
• Condensate must be managed correctly and safety away from the unit.
• The unit should be installed in a way that prevents unauthorized access.
• The unit must not be installed in an area that is damp or could come into contact with water
(such as a laundry room).
• The unit must not be exposed to direct sunshine or to other direct heat sources.
• The filter must be able to be removed and cleaned easily.
• The unit should be placed as far as possible from fluorescent lights so the remote control is not
subject to interference.
• Care should be taken to prevent harmonics generated by loose or unsupported material in close
proximity to a running unit.
• The unit must not be installed in an area that is exposed to salt, machine oil, sulfide gas, or
corrosive environmental conditions.
Service Clearances
Installation plate
11.81 in. (300 mm)
4.9 in. (125 mm)
4.9 in. (125 mm)

VRF-SVX30C-EN 7
Installation
Installation
Review “Installation Considerations” before proceeding with installation.
Follow the procedures in these sections in the order given.
Note: Install the Y-joint before installing the indoor unit.
Mounting the Unit
The wiring, piping, and drain hose can be connected to run from the indoor unit in one of the
following directions:
•Right(A)
• Left (B)
• Underside (C)
• Rear (right or left)
1. Determine the position of the piping and drain hose and drill a 2.56 in. (65 mm) hole that slants
slightly upward.
2. Attach the installation plate to a wall or a window frame, considering the weight of the unit.
Refer to the following dimensional diagrams.
•If you are mounting the installation plate to a concrete wall, use anchor bolts making sure
they do not project more than 0.8 in. (20 mm).
•For an existing structure, attach the installation plate to wall studs or take other necessary
precautions for supporting the unit.
•For mounting on a window frame, install wood mounting supports for the unit. Attach the
installation plate to the wooden uprights using tapping screws.
3. Install the unit on the plate.
5.51
(140)
2.56 (65)
1.34 (34)
1.34 (34)
2.68
(68)
Pipe hole:
Pipe hole:
4.72
(120)
1.06 (27)
1.06 (27)
2.68
(68)
2.56 (65)
Pipe hole:
4TVW0007B100NC
4TVW0009B100NC
4TVW0012B100NC
4TVW0018B100NC
4TVW0020B100NC
4TVW0024B100NC

8VRF-SVX30C-EN
Installation
Purging the Unit
The unit is shipped from the factory with a holding charge of nitrogen. All of this gas must be
purged from the unit.
To purge the unit, remove the caps from the ends of both gas and liquid refrigerant pipes. Make
sure all gas has escaped before connecting the piping.
Note: To prevent dirt or foreign objects from getting into the pipes during installation, do not
remove the caps completely until you are ready to connect the piping.
Installing Refrigerant Piping
Overview
• Use insulated, unwelded, degreased, and deoxidized copper pipe (Cu-DHP type according to
ISO 1337 or UNI EN 12735-1) suitable for an operating pressure of at least 609.15 psi (4200 kPa)
and a burst pressure of at least 3002.28 psi (20,700 kPa). Copper pipe for hydro-sanitary
applications is unsuitable.
• For sizing and limits (height difference, line length, maximum bends, refrigerant charge, and
so on) refer to the outdoor unit installation manual (VRF-SVN34).
Liquid refrigerant port
Gas refrigerant port
WARNING
Hazard of Explosion and Deadly Gases!
Failure to follow all proper safe refrigerant handling practices could result in death or serious
injury. Never solder, braze or weld on refrigerant lines or any unit components that are above
atmospheric pressure or where refrigerant may be present. Always remove refrigerant by
following the guidelines established by the EPA Federal Clean Air Act or other state or local
codes as appropriate. After refrigerant removal, use dry nitrogen to bring system back to
atmospheric pressure before opening system for repairs. Mixtures of refrigerants and air under
pressure may become combustible in the presence of an ignition source leading to an
explosion. Excessive heat from soldering, brazing or welding with refrigerant vapors present
can form highly toxic gases and extremely corrosive acids.
NOTICE:
System Component Damage!
Do not remove the seal caps from refrigerant connections, or open the service valves until
prepared to braze refrigerant lines to the connections. Excessive exposure to atmosphere (> 5
min.) may allow moisture or dirt to contaminate the system, damaging valve seals and causing
ice formation in system components.

VRF-SVX30C-EN 9
Installation
• All refrigerant connections must be accessible for servicing and maintenance.
To install refrigerant pipes:
1. Cut or extend field-supplied piping as needed. To extend pipes, braze or using flared pipe
connections (not supplied). Refer to “Pipe Cutting” p. 9, “Nitrogen Flushing While Brazing”
p. 9, and “Flared Pipe Connections” p. 10.)
2. Make sure that pipes are free of dirt, debris, and moisture, and do not leak. Refer to leak testing
pipe connections in the outdoor unit installation manual (VRF-SVN34).
3. Braze or use flared pipe connections to install piping.
Pipe Cutting
Required tools:
•Pipecutter
•Reamer
• Pipe holder
1. Using a pipe cutter, cut the pipe so that the cut edge is at 90° to the side of the pipe.
2. Use a reamer to remove all burrs at the cut edge.
See examples of correctly and incorrectly cut pipes.
Nitrogen Flushing While Brazing
While brazing refrigerant pipes, flush them with nitrogen gas. Use a pressure regulator to maintain
a flow rate of 1.76 ft3/h (0.05 m3/h) or more.
Figure 1. Nitrogen flushing while brazing refrigerant pipes
Correct: 90º Oblique Rough Burr
NOTICE
Avoid Unit Damage!
Never braze pipe connections without performing nitrogen flushing. Failure to perform this
procedure will damage the unit, resulting in capacity loss and reduced long-term reliability.
Flowmeter
Pressure regulator Stop valve
Nitrogen
Nitrogen

10 VRF-SVX30C-EN
Installation
Flared Pipe Connections
Clutch type and wing nut type flare tools are available for flared pipe connections.
1. Slide the flare nut over the pipe to be flared.
2. Slide the end of the pipe into the hole on the flaring bar that fits the pipe, leaving a length of
pipe, determined by tool type (see table), extending above the flaring bar. Clamp it down.
3. Attach the yoke to the flaring bar, centering the conical part over the end of the pipe that is
extending above the flaring bar.
4. Tighten the yoke securely to flare the end of the pipe.
5. Remove the pipe. The end of the pipe that you flared should look like the end of a trumpet. See
examples of correctly and incorrectly flared pipes.
R-410A clutch type Conventional flare tool
Clutch type Wing nut type
0–0.020 in. 0.04–0.06 in. 0.06–0.08 in.
Length of pipe extending above flare bar
Pipe
Flaring
bar
Yoke
Flaring bar
Copper pipe
Flare nut
Inclined Damaged
surface Uneven
thickness
Correct Cracked

VRF-SVX30C-EN 11
Installation
6. Align the pipes and tighten the flare nuts manually and then with a spanner torque wrench,
applying the torque according to pipe dimensions:
Leak Testing Pipe Connections
Notes:
• All required piping pressure tests must be completed in accordance with national and/or
local codes.
• When leak-testing refrigerant systems, observe all safety precautions.
• Leak test only one circuit at a time to minimize system exposure to potentially harmful
moisture in the air.
• Use R-410A refrigerant gas as a tracer for leak detection and use oil-pumped dry nitrogen
to develop required test pressures.
1. Close liquid line angle valve.
2. Connect R-410A refrigerant cylinder to high side charging port (at condenser or field supplied
discharge line access port). Add refrigerant to reach pressure of 12 to 15 psig.
Outer diameter
(in. [mm])
Connection
torque (ft·lb)
Flare
dimension
(in.) Flare shape (in.)
1/4 (6.35) 10.3–13.3 ft·lb 0.34–0.36
3/8 (9.52) 25.1–31.0 ft·lb 0.50–0.52
1/2 (12.70) 36.1–45.0 ft·lb 0.64–0.65
5/8 (15.88) 50.2–60.5 ft·lb 0.76–0.78
R.016–.031
45°±2°
90°±2°
WARNING
Confined Space Hazards!
Do not work in confined spaces where refrigerant or other hazardous, toxic or flammable gas
may be leaking. Refrigerant or other gases could displace available oxygen to breathe, causing
possible asphyxiation or other serious health risks. Some gases may be flammable and or
explosive. If a leak in such spaces is detected, evacuate the area immediately and contact the
proper rescue or response authority. Failure to take appropriate precautions or to react properly
to such potential hazards could result in death or serious injury.
WARNING
Explosion Hazard!
Never use an open flame to detect gas leaks. It could result in an explosion. Use a leak test
solution for leak testing. Failure to follow recommended safe leak test procedures could result
in death or serious injury or equipment or property-only-damage.
Use only dry nitrogen with a pressure regulator for pressurizing unit. Do not use acetylene,
oxygen or compressed air or mixtures containing them for pressure testing. Do not use
mixtures of a hydrogen containing refrigerant and air above atmospheric pressure for pressure
testing as they may become flammable and could result in an explosion. Refrigerant, when
used as a trace gas should only be mixed with dry nitrogen for pressurizing units. Failure to
follow these recommendations could result in death or serious injury or equipment or
property-only damage.
Do not exceed unit nameplate design pressures when leak testing system. Failure to follow
these instructions could result in an explosion causing death or serious injury.

12 VRF-SVX30C-EN
Installation
3. Disconnect refrigerant cylinder. Connect dry nitrogen cylinder to high side charging port and
increase pressure to 150 psig. Do not exceed high side (discharge) unit nameplate design
pressure. Do not subject low side (suction) components to high side pressure.
4. Check all piping joints, valves, etc. for leaks. Recommend using electronic detector capable of
measuring 0.1 oz/year leak rate.
5. If a leak is located, use proper procedures to remove the refrigerant/nitrogen mixture, break
connections and make repairs. Retest for leaks.
6. Make sure all service valves are open.
Installing the Drain System
Follow these precautions and recommendations when installing the drain hose to the indoor unit:
• The hose must have a downward slope.
• The end of the hose must not be in standing water or in a hollow spot that can collect water.
• Maintain a clearance of at least 2 in. (5 cm) between the end of the hose and the ground.
• An extension can be added to the drain hose if necessary. See figure below.
1. Select the drain hole to be used based on how the unit will be installed. If a rubber stopper is
installed in the hole to be used, remove it with a pliers.
2. Insert the drain hose into the hole until it is secured by the groove on the end of the hose. Then
insert and tighten the screw.
At least 2 in. (5 cm) between end
of hose and ground

VRF-SVX30C-EN 13
Installation
3. If it is not already blocked, insert the rubber stopper into the drain hole that is not used, turning
it to the right with a screwdriver until it is secure.
4. If necessary, connect the 6.6 ft (2 m) extension to the drain hose. Insulate the inside of the
extension with a shield.
5. Pass the drain hose under the refrigerant pipe and through the hole in the wall. Keep the hose
tight and make sure it slants downward.
Note: Make sure the drain hose connection is accessible after installation is complete.
Changing the Drain Hose Discharge Location
If it is necessary to change the drain hose discharge location:
1. Detach the rubber cap from the drain hole with pliers.
2. Detach the drain hose by turning it to the left while pulling it.
3. Insert the drain hose into the other hole until it is secured by the groove on the end of the hose.
Then insert and tighten the screw (see procedure for drain installation, above).
4. Insert the rubber stopper into the drain hole that is not used, turning it to the right with a
screwdriver until it is secure.
Drain pan outlet
Rubber cap

14 VRF-SVX30C-EN
Insulation
Insulation
After determining that there are no leaks in the refrigerant pipes or drainage hose, insulate them
as described in these sections.
Refrigerant Pipes
1. Use the table below to select the insulation type for each pipe size.
2. Wrap insulation around the entire surface of each pipe, from the indoor unit to the outdoor unit,
overlapping insulation to avoid gaps. Clamp insulation tightly to pipe.
•Do not wrap the gas and liquid refrigerant pipes together.
•Avoid compressing the insulation as much as possible.
•Be sure there are no cracks or deformities in the insulation at bends in pipes.
•If necessary double the insulation to prevent condensation from forming in warm or humid
areas.
•Cut off excess insulation.
Drainage Hose
Insulate (field supplied) the entire surface of the drain pipe that is inside the building, including the
connection between the drain hose and drain stub. Clamp tightly.
Pipe
Pipe size
(in. [mm])
Insulation Type
Standard conditions
(86°F [30°C], 85%)
High humidity conditions(a)
(86°F [30°C], over 85%)
EPDM or NBR
Liquid pipe 1/4 (6.35) – 3/8 (9.52) 3/8 (9) 3/8 (9)
1/2 (12.70) – 2 (50.80) 1/2 (13) 1/2 (13)
Gas pipe(b)
1/4 (6.35) 1/2 (13) 3/4 (19)
3/8 (9.52) – 1 (25.40) 3/4 (19) 1.0 (25)
1-1/8 (28.58) – 1-3/4 (44.45) 1-1/4 (32)
2 (50.80) 1.0 (25) 1-1/2 (38)
(a)When installing insulation in any of the following environments, use insulation required for high humidity conditions: Buildings with close proximity to
bodies of water or hot springs or on the side of a hill in which the building is partly covered by earth; ceilings frequently exposed to moisture such as
in restaurants, saunas, swimming pools, and corridors of dormitories or studios near a frequently-used outdoor exit; buildings with no ventilation system.
(b) Internal temperature of gas pipe is higher than 248°F (120°C).

VRF-SVX30C-EN 15
Wiring the Unit
Wiring the Unit
Observe the following precautions when making electrical connections.
• Make all electrical connections in accordance with electrical codes and ordinances.
• Select the power cable in accordance with relevant local and national regulations.
• Wire size must comply with local and national code.
• Use grade H07RN-F or H05RN-F power cable.
• Connect the power cable into the power cable terminal and fasten it with a clamp.
• Unbalanced power must be maintained within 10% of supply rating among whole indoor units.
• Significantly unbalanced power may shorten the life of the system. If the unbalanced power is
greater than 10% of supply rating, the unit will stop and an error code will be generated.
• Connect the power cable to the auxiliary circuit breaker. An all-pole disconnection from the
power supply must be incorporated in the field wiring (1/8 in. [3 mm]).
• All wiring must be protected from weather and damage.
• Maintain a distance of 2 in. (50 mm) or more between power and communications cables to
prevent interference.
• Maintain a voltage drop of less than 10% between the power source and the unit(s).
• Use an appropriate screwdriver for tightening the terminal screws. A screwdriver with a small
head will strip the head and make proper tightening impossible.
• Over-tightening the terminal screws may break them.
Tightening torque for M4 screws: 0.86–1.06 lbf·ft (12.0–14.7 kgf·cm).
• After making a knockout hole, apply rust-preventive paint to the bare metal around the hole.
• Secure the cable conduit to the outdoor knockout using the proper connector and bushing.
Power Wiring
Connect the power cable to terminals 1(L) and 2(N) on each indoor unit. Refer to Figure 2 or
Figure 3, p. 16.
Communications Wiring
Use 18 AWG, 25 pF/ft nom., 60.7 impedance, braid or foil shielded, twisted pair wire for
communications wiring. Wire the devices as shown in Figure 2 or Figure 3, p. 16.
To connect a wired remote control to a high-wall indoor unit, as shown in Figure 3, remove the
small white plug at the end of the red and blue wires on the wiring harness. Connect the red and
blue wires to F3 and F4 on the wired remote control.
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote disconnects before servicing. Follow proper
lockout/tagout procedures to ensure the power can not be inadvertently energized. Failure to
disconnect power before servicing could result in death or serious injury.
NOTICE
Use Copper Conductors Only!
Unit terminals are not designed to accept other types of conductors. Failure to use copper
conductors could result in equipment damage.

16 VRF-SVX30C-EN
Wiring the Unit
Figure 2. Wiring diagram for individual control
Figure 3. Wiring diagram for group control
1(L) 2(N) F2 F1 1(L)
1(L) 2(N)
2(N) F1F1 F2
F2
208–230 V
F1 F2
Outdoor unit
Indoor unit 1 Indoor unit 2 Indoor unit 3
Wireless remote controls
1(L) 2(N) F2 F1 1(L)
1(L) 2(N)
2(N) F1F1 F2
F2
208–230 V
F1 F2
12
F3 F4
12 12
Wired
remote
control
Outdoor unit
Indoor unit
1Indoor unit
2Indoor unit
3
Note: To connect a wired remote control to a
high-wall indoor unit, remove the small
white plug at the end of the red and
blue wires on the wiring harness.
Connect the red and blue wires to F3
and F4 on the wired remote control.

VRF-SVX30C-EN 17
Configuration
Configuration
All VRF indoor units are factory configured. If modifications are required, one of the following
control devices can be used:
• VRF Wireless Remote Control (instructions follow)
• VRF Wired Remote Control
• VRF System Controller
• VRF Enterprise Management Software
Using the VRF Wireless Remote Control
To change configurations of the VRF system using the VRF Wireless Remote Control, follow this
procedure:
1. Remove the batteries from the remote control, and re-insert them while pressing the Temp+ and
Temp- buttons simultaneously (refer to Figure 4, p. 18).
The first 2-digit segment of a 24-digit sequence will appear on the wireless remote control
display, as shown:
2. To advance to the next 2-digit segment, press the Mode button (Figure 4, p. 18). Continue
pressing the Mode button until the 2-digit segment appears that corresponds to the option
setting that you want to view or change.
Each 2-digit segment is differentiated from the others by a combination of operation mode
(Auto/Cool/Dry...) and ON/OFF icons, as shown below. (See “The 2-Digit Segments,” for more
detailed information.)
3. To change the value of the left digit on the display, press the Fan down button.
To change the value of the right digit on the display, press the Fan up button.
Note: Values and their corresponding settings are listed in the following pages of this section
of the manual.
4. To save the setting, press the Power button twice.
5. To restore the wireless remote control to normal operating mode, remove the batteries from
the remote control. Then re-insert them.
Digits 2 and 3 Digits 4 and 5 Digits 6 and 8 ...and so on,
through digits 23
and 24.
Note: Digits 1, 7, 13, and 19 do not appear and are not used for configuration.

18 VRF-SVX30C-EN
Configuration
Figure 4. VRF Wireless Remote Control
Mode button
Fan up
Temp up
Temp down Fan down
Power button
2-digit segment

VRF-SVX30C-EN 19
Configuration
The 2-Digit Segments
Each 2-digit segment is differentiated from the others by a combination of operation mode and
timer on/off icons. See Figure 5.
Figure 5. Two-digit segments in the 24-digit sequence
Notes to Figure 4:
• Digits 1, 7, 13, and 19 (shown in green) are factory set and cannot be changed. They do not
appear on the display.
• Digit 2 (shown in red) is used to change the configuration mode (see “Configuration
Modes” for details).
• The digit numbers shown in gray above each digit (D2, D3, etc.) do not appear on the
display.
Configuration Modes
Digit 2 (shown in red in Figure 5) is used to set the configuration mode. The four modes are shown
in Figure 6.
Figure 6. The four configuration modes
Mode “2”: Option setting Mode “5”: Option setting Mode “A”: Addressing Mode “d”: Specific digit changing

20 VRF-SVX30C-EN
Configuration
Mode 2: Option Setting
When digit 2 is set to a value of “2,” the options shown in Table 1 can be set to the values in the
right column.
Table 1. Option setting mode: Digit 2 = 2
Display
screen
(mode and
On/Off)
Digit
Option description Set digit to...
N/A 1 Factory set to 0. Cannot be changed. Not seen in configuration mode.
2 Option setting mode 2
3 Not available. Factory set to 0.
4Remote temperature sensor/ minimizingfanoperationwhen
thermostat is Off
5 Central control 0: Disabled
1: Enabled
6RPMup 0: Disabled
1: Enabled
N/A 7 Factory set to 1. Cannot be changed. Not seen in configuration mode.
8Drainpump 0: Disabled 1: Enabled (no delay)
2: Enabled (3-min delay)
9 Not available. Factory set to 0.
10 Not available. Factory set to 0.
11 EEV position when heating is
satisfied 0: EEV step is minimum (default)
1: Reduced noise setting
12 Master/Slave is automatically designated by wired remote
control.(a)
0: Slave
1: Master
Remote temperature sensor Minimizing fan operation when
thermostat is Off
0: Disable Disable
1: Enable Disable
2: Disable Enable (a)
3: Enable Enable (a)
(a) Minimizes fan operation when thermostat is turned Off. Fan
operates for 20 seconds at an interval of 5minutes in Heat mode.
D11 D12