Trane 4TVB0009B100NB, 4TVB0012B100NB, 4TVB0018B100NB, 4TVB0020B100NB Installation and Maintenance Manual
Installation, Operation,
and Maintenance
Variable Refrigerant Flow System
Mini 4-Way Cassette Indoor Unit Series
Models: 4TVB0009B100NB, 4TVB0012B100NB, 4TVB0018B100NB, 4TVB0020B100NB
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.
February 2013 |
VRF-SVX28A-EN |
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:
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 refrigerantsincluding 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.
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.
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.
© 2013 Trane All rights reserved |
VRF-SVX28A-EN |
Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Warnings, Cautions, and Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Important Environmental Concerns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Important Responsible Refrigerant Practices . . . . . . . . . . . . . . . . . . . . . . . 2
Model Number Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Preparing for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Location Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Service Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Mounting the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Purging the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Installing Refrigerant Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Leak Testing Pipe Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Installing the Drain System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Centralized Drainage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Testing the Drainage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Refrigerant Pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Drainage Hose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Wiring the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Electronic Expansion Valve (EEV) Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Electrical Conduit Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Using the VRF Wireless Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 The 2-Digit Segments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Configuration Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Mode 2: Option Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Mode 5: Option Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Mode A: Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Mode d: Specific Digit Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Operating Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Internal Protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
VRF-SVX28A-EN |
3 |
Operating Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
32 |
Operating Mode for Heat Pump Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
32 |
Cleaning the Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
32 |
Cleaning the Grill and Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
32 |
Periodic Maintenance Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
33 |
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
. . . 38
Basic Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Exclusions and Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
4 |
VRF-SVX28A-EN |
Model Number Description
4 |
T |
V |
D |
0 |
0 |
1 |
8 |
A |
1 |
0 |
0 |
N |
A |
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Digit 1: Refrigerant
4 = R410A
Digit 2: Brand name
T = Trane
Digit 3: System type
V = Variable Refrigerant Flow
Digit 4: Configuration Type (also see separate tab)
B= mini 4-way cassette
C= 4-way cassette
D= MSP duct type (mid-pressure)
E= 1-way cassette
L = Slim duct type (low pressure) A = HSP duct type high pressure) X = Ceiling
W = High-wall
Digit 5: Reserved for future use
0 = Not currently used
Digit 6, 7, 8: Nominal capacity (Btu/h x 1,000)
006 = 6,000 Btu/h |
020 = 20,000 Btu/h |
060 = 60,000 Btu/h |
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007 |
= 7,000 Btu/h |
024 = 24,000 Btu/h |
068 = 68,000 Btu/h |
009 = 9,000 Btu/h |
030 = 30,000 Btu/h |
076 = 76,000 Btu/h |
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012 |
= 12,000 Btu/h |
036 = 36,000 Btu/h |
096 = 96,000 Btu/h |
018 |
= 18,000 Btu/h |
048 = 48,000 Btu/h |
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Digit 9: Major development sequence
B = Second development sequence
Digit 10: Electric power supply characteristics
1 = 220/60/1
B = 220–240/50/1
Digit 11: Reserved for future use
0 = Not currently used
Digit 12: Controller
0 = None
R = Remote control standard
W = Wired control standard
Digit 13: Region of sale
N = North America (UL or ETL)
Digit 14: Minor design sequence
A = First design sequence
B = Second design sequence
VRF-SVX28A-EN |
5 |
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.
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Flexible hose |
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Template |
Insulation A |
Insulation B |
Insulation C |
clamp |
Flexible hose |
Cable tie |
Conduit bracket |
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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.
6 |
VRF-SVX28A-EN |
Preparing for Installation
Unit Dimensions
Unit: inch (mm)
26.38 (670) |
26.38 (670)
22.03–24.80 (585–630) ceiling opening |
19.69 (500) suspension position |
(24.80) ceiling opening |
(500) suspension position |
22.03 |
19.69 |
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1.87(47.5) |
22.64(575) |
1.87(47.5) |
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11.81(300) |
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7.87(200) |
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11.61 (295) |
9.84 (250) |
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4.72(120) |
Sub duct connection
1.87(47.5) |
22.64(575) |
1.87(47.5) |
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1.7(43) |
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6.5(165) |
2.72(69) |
6.3(160) |
8.07(205) |
8.82(224) |
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9.8(249) |
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10.6(269) |
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11.8 (300) |
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Net dimension |
22.64 x 8.94 x |
22.64 (575 x 250 x 575) |
Net weight |
24.46 lb (12.0 kg) |
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Liquid pipe connection |
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1/4 (6.35) |
Gas pipe connection |
1/2 (12.70) |
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Drain hose connection |
OD: 1.25 |
(32), ID: 0.98 (25) |
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VRF-SVX28A-EN |
7 |
Preparing for Installation
Service Clearances
11.7 (297)
0.67 (17)
. n mi
) 0 0 5 1 (
9 5
Obstruction
59 (1500) minimum
0.79 (20)
8 |
VRF-SVX28A-EN |
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
If the ceiling is already constructed, piping must be laid into position before placing the unit inside the ceiling.
CAUTION
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, verify proper dimensions between the marks. Refer to “Installing the Front Panel” for final finishing clearances.
2.Determine the appropriate type of suspension bolts and anchors according to the ceiling type. Insert bolt anchors into existing ceiling supports (A) or construct a suitable support (B).
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A |
B |
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Concrete |
Ceiling support |
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Drill hole for |
Pre-poured |
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anchor |
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anchor |
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Field-supplied suspension |
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bolts (M10 or 3/8 in.) |
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Isolator |
Bracket |
3. |
Install suspension bolts at all four locations. |
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4. |
Screw two nuts to each suspension bolt, leaving space between the nuts for hanging the unit. |
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Note: If the suspension bolts are longer than 59 in. [1.5 m]) or vibrations are a concern, place |
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isolators on the brackets to absorb vibrations. |
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5. |
Hang the unit by its support brackets between the two nuts. |
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6. |
If pad stoppers or isolators are used to absorb vibrations, place them on the brackets. |
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VRF-SVX28A-EN |
9 |
Installation
7.Tighten the nuts to suspend the unit following the guidelines in the figure below.
Threaded rod should not protrude more than 1.2 in (30 mm) below the top of the bracket
Washers, isolators, or spacers
8. Maintain proper spacing between the unit and the ceiling; refer to the following figure.
Indoor unit |
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0.79 in. (20 mm) |
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Ceiling 0.67 in. (17 mm)
Gauge
9. Adjust the level of the unit with a leveler.
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 remove the pinch pipes completely until you are ready to connect the piping.
Liquid refrigerant port
Gas refrigerant port
10 |
VRF-SVX28A-EN |
Installation
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.
NOTICE
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, 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) see the outdoor unit installation manual.
•All refrigerant connections must be accessible for servicing and maintenance.
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.
Correct: 90º
Oblique |
Rough |
Burr |
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.
Length of pipe extending above flare bar |
Flaring
bar
Pipe
VRF-SVX28A-EN |
11 |
Installation
R-410A clutch type |
Conventional flare tool |
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Clutch type |
Wing nut type |
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0–0.020 in. |
0.04–0.06 in. |
0.06–0.08 in. |
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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.
Yoke
Flaring bar
Copper pipe
Flare nut
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.
Correct |
Inclined |
Damaged Cracked |
Uneven |
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surface |
thickness |
6.Align the pipes and tighten the flare nuts manually and then with a spanner torque wrench, applying the torque according to pipe dimensions:
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Flare |
Outer diameter |
Connection |
dimension |
(in. [mm]) |
torque (ft·lb) |
(in.) |
1/4 (6.35) |
10.3–13.3 ft·lb |
0.34–0.36 |
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3/8 (9.52) |
25.1–31.0 ft·lb |
0.50–0.52 |
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1/2 (12.70) |
36.1–45.0 ft·lb |
0.64–0.65 |
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5/8 (15.88) |
50.2–60.5 ft·lb |
0.76–0.78 |
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Flare shape (in.)
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R.016–.031 |
90°±2° |
45°±2° |
12 |
VRF-SVX28A-EN |
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