Ingersoll-Rand 4MUC4518A10N0A, 4MUC4524A10NA, 4MUC4548A10N0A, 4MUC4530A10N0A, 4MUC4536A10N0A Installation Operation & Maintenance

Installation, Operation,
and Maintenance

C-Series

Cassette Indoor Units

Models: 4MUC4518A10N0A, 4MUC4524A10NA, 4MUC4530A10N0A, 4MUC4536A10N0A, 4MUC4542A10N0A,

4MUC4548A10N0A

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.

May 2015

SAFETY WARNING

MS-SVX039A-EN

DB68-05139A(1)

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.

The three types of advisories are defined as follows:

WARNI NG

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

CAUTIONs

NOTICE

Indicates a potentially hazardous
situation which, if not avoided, could
result in death or serious injury.

Indicates 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.

Indicates a situation that could result in
equipment or property-damage only.

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.

WARNI NG

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.

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.

2 MS-SVX039A-EN

Table of Contents

Model Number Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Preparing for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Location Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Service Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Mounting the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Purging the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Installing Refrigerant Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Leak Testing Pipe Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Installing the Drain System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Refrigerant Pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Centralized Drainage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Testing the Drainage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Drainage Hose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Wiring the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Communications Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Electrical Conduit Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Using the Technician Utilities Tool (TUT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Using the Wireless Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

The 2-Digit Segments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Installation Option #1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Operating Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Internal Protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Operating Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Cleaning the Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Cleaning the Grill and Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Periodic Maintenance Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Warranty For Trane C-Series Ductless Systems and Related Accessories . . . 31

MS-SVN045A-EN 3

Model Number Description

4MUC4518A10N0A

1234567891011121314

Digit 1: Refrigerant

4 = R-410A

Digit 2: Brand name

M = Mini-split indoor unit

Digit 3: System type

U = Universal match heat pump

Digit 4: Configuration type

C = 4-way cassette

Digit 5: Reserved for future use

4 = Standard model

Digit 6: Connection type

5 = Flare

Digit 7, 8: Nominal capacity (Btu/h x 1,000)

18 = 18,000 Btu/h 36 = 36,000 Btu/h
24 = 24,000 Btu/h 42 = 42,000 Btu/h
30 = 30,000 Btu/h 48 = 48,000 Btu/h

Digit 9: Major development sequence

A = First development sequence

Digit 10: Electric power supply characteristics

1 = 208–230/60/1

Digit 11: Reserved for future use

0 = Not currently used

Digit 12: Region of sale

N = North America (UL or ETL)

Digit 13: Reserved for future use

0 = Not currently used

Digit 14: Minor design sequence

A = First design sequence

4 MS-SVX039A-EN

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.

Template Insulation A Insulation B Insulation C

Note: The required panel is not included with the indoor unit. It must be ordered separately

(Model #TVEPANPC4NUSET).

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

• The air must circulate freely in

• Sufficient clearance must be m

• Condensate must be managed correctly and safety away from the

• 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
h as a laundry room).

(suc

• The unit must not be exposed to direct su

• The filter must be able to be removed and cleaned easily.

• The unit should be placed as far as possible from

subject to interference.

• Care should be taken to prevent harmonics generated

proximity to a running unit.

• The unit must not be installed in an area that is exposed to salt, machine oil, sulfide gas, or

rosive environmental conditions.

cor

Flexible hose

clamp Flexible hose Cable tie Conduit bracket

of the refrigerant tubing and wiring to the outdoor unit.

the area to be cooled/heated.

aintained around the unit.

unit.

nshine or to other direct heat sources.

fluorescent lights so the remote control is not

by loose or unsupported material in close

MS-SVX039A-EN 5

Preparing for Installation

37.4 (950)

28.94 (735) suspension position

35.04–35.83 (890–910) ceiling opening

37.4 (950)

35.04–35.83 (890–910) ceiling opening

28.94 (735) suspension position

1.77 (45)

4.72 (120)

3.78 (96)

8.5 (216)

6.46 (164)

3.39 (86)

B

A

33.07 (840)

2.17 (55) 2.17 (55)

33.07 (840)

2.17 (55)

14.57 (370)

13.6 (346)

7.28 (185)

13 (330) 9.5 (240)

10.6 (270)

11.8 (300)

Sub duct connection

Unit: inch (mm)

Unit Dimensions

6 MS-SVX039A-EN

Dimension/Weight/Diameter

A

B

Net dimension

Net weight

Liquid pipe connection

Gas pipe connection

Drain hose connection

Model

4MUC4518A10N0A 4MUC4524A10N0A

8 (204) 11.3 (288)

10 (253) 13.3 (337)

OD: 0.98 (25), ID: 0.79 (20)

33 x 8 x 33 (840 x 204 x 840) 33 x 11.3 x 33 (840 x 288 x 840)

34.2 lb (15.5 kg) 41.9 lb (19 kg)

1/4 (6.35) 1/4 (6.35) 3/8 (9.52)

1/2 (12.70) 5/8 (15.88) 5/8 (15.88)

4MUC4530A10N0A
4MUC4536A10N0A
4MUC4542A10N0A
4MUC4548A10N0A

Service Clearances

Obstruction

59 (1500) minimum

0.79 (20)

0.67 (17)

9

8

.

4

(

2

5

0

0

)

mi

n

.

C

Preparing for Installation

Model

4MUC4530A10N0A

Clearance

4MUC4518A10N0A
4MUC4524A10N0A

C

10 (253) 13.3 (337)

4MUC4536A10N0A
4MUC4542A10N0A
4MUC4548A10N0A

MS-SVX039A-EN 7

Installation

A

B

Ceiling support

Concrete

Pre-poured anchor

Drill hole for anchor

Field-supplied suspension
bolts (M10 or 3/8 in.)

Isolator

Bracket

Washers, isolators, or spacers

Threaded rod should not protrude more than

1.2 in (30 mm) below the top of the bracket

Review “Installation Considerations” before proceeding with installation.

Follow the procedures in these sections in the order given.

Mounting the Unit

If the ceiling is already constructed, piping must be laid into position before placing the unit inside
the ceiling.

Avoid equipment damage and personal injury!

Ensure that the ceiling is strong enough to support the weight of the indoor unit. Before
hanging the unit, test the strength of each of the attached suspension bolts.

To mount the unit:

1. Place the template on the spot where the unit is to be installed and mark the holes.

Note: The template may shrink or stretch slightly due to heat or humidity. Before drilling holes,

2. Determine the appropriate type of suspension bolts and anc

Insert bolt anchors into existing ceiling supports (A) or construct a suitable support (B).

CAUTION

verify proper dimensions between the marks. Refer to “Installing the Front Panel” for
final finishing clearances.

hors according to the ceiling type.

3. Install suspension bolts at all four locations.

4. Screw two nuts to each suspensio

Note: If the suspension bolts ar

isolators on the brackets to absorb vibrations.

5. Hang the unit by its support brac

6. If pad stoppers or isolators are used to absorb vibrations, place them on the brackets.

7. Tighten the nuts to suspend

8. Maintain proper spacing between

8 MS-SVX039A-EN

n bolt, leaving space between the nuts for hanging the unit.

e longer than 59 in. [1.5 m]) or vibrations are a concern, place

kets between the two nuts.

the unit following the guidelines in the figure below.

the unit and the ceiling; refer to the following figure.

9. Adjust the level of the unit with a leveler.

Indoor unit

Gauge

Ceiling

0.79 in. (20 mm)

0.67 in. (17 mm)

Gas refrigerant port

Liquid refrigerant port

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, unscrew the pinch pipes 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

Installation

remove the pinch pipes completely until you are ready to connect the piping.

MS-SVX039A-EN 9

Installation

Correct: 90º

Oblique

Rough

Burr

Length of pipe extending above flare bar

Pipe

Flaring

bar

Installing Refrigerant Piping

Connect field-supplied piping using flared connections (not supplied) or by brazing. The large unit
port is for gas refrigerant; the small one is for liquid refrigerant.

Cut or extend field-supplied piping as needed. Use the following procedures.

System Failure!

If brazing is used for pipe connections, a nitrogen purge is required to prevent the formation of
copper oxides inside the piping. Failure to follow this procedure could damage the system.

• Before connecting the pipes, make sure they are free of dirt and debris.

• Use insulated, unwelded, degreased,

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

ications is unsuitable.

appl

• For sizing and limits (height difference, line le

so on) see the outdoor unit installation manual.

• All refrigerant connections must be accessible f

Pipe Cutting

Required tools:

•Pipe cutter

•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.

NOTICE

and deoxidized copper pipe (Cu-DHP type according to

ngth, maximum bends, refrigerant charge, and

or servicing and maintenance.

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 h

pipe, determined by tool type (see table), extending above the flaring bar. Clamp it down.

10 MS-SVX039A-EN

ole on the flaring bar that fits the pipe, leaving a length of