Trane VCCF04 - 24, VCEF04 - 24, VCWF04 - 24 Installation and Maintenance Manual

Installation, Operation,
and Maintenance

VariTrane™
Single-Duct and Fan-Powered Units

All VariTrane VAV models with pneumatic, electronic, DDC controls, and diffusers.

VCCF04 - 24
VCEF04 - 24
VCWF04 - 24

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.

September 2014

VAV-SVX08E-EN

Introduction

Read this manual thoroughly before operating or servici ng
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

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
accidents.

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.

WARNING

Personal Protective Equipment (PPE)
Required!

Installing/servicing this unit could result in exposure to
electrical, mechanical and chemical hazards.

• Before installing/servicing this unit, technicians
MUST put on all PPE required for the work being
undertaken (Examples; cut resistant gloves/sleeves,
butyl gloves, safety glasses, hard hat/bump cap, fall
protection, electrical PPE and arc flash clothing).
ALWAYS refer to appropriate Material Safety Data
Sheets (MSDS)/Safety Data Sheets (SDS) and OSHA
guidelines for proper PPE.

• When working with or around hazardous chemicals,
ALWAYS refer to the appropriate MSDS/SDS and
OSHA/GHS (Global Harmonized System of
Classification and Labelling of Chemicals) guidelines
for information on allowable personal exposure
levels, proper respiratory protection and handling
instructions.

• If there is a risk of energized electrical contact, arc, or
flash, technicians MUST put on all PPE in accordance
with OSHA, NFPA 70E, or other country-specific
requirements for arc flash protection, PRIOR to
servicing the unit. NEVER PERFORM ANY
SWITCHING, DISCONNECTING, OR VOLTAGE
TESTING WITHOUT PROPER ELECTRICAL PPE AND
ARC FLASH CLOTHING. ENSURE ELECTRICAL
METERS AND EQUIPMENT ARE PROPERLY RATED
FOR INTENDED VOLTAGE.

Failure to follow instructions could result in death or
serious injury.

© 2014 Trane All rights reserved VAV-SVX08E-EN

WARNING

Fiberglass Wool!

Product contains fiberglass wool. Disturbing the
insulation in this product during installation,
maintenance or repair will expose you to airborne
particles of glass wool fibers and ceramic fibers known
to the state of California to cause cancer through
inhalation. Glass wool fibers could result in respiratory,
skin or eye irritation.

Introduction

This manual describes the installation of VariTrane™ VAV
units with recommended wiring, piping, and mounting of
single-duct, dual-duct, fan-powered, low-height terminal
units, and diffusers.

See also the following reference documents:

• BAS-SVX40A-EN —Wireless Comm IOM

• BAS-SVX55A-EN — Wireless Comm Network Design
Best Practices Guide

Receiving and Handling

VariTrane units are shipped completely assembled with
the exceptions of optional attenuators for fan-powered
units and accessories.

Upon receiving the equipment, complete the following:

• Locate the nameplate and refer to the model and sales
order number and check that the correct units have
been delivered.

• Inspect the control enclosures and air valve casing for
dents or punctures.

• Verify that all options have been included, such as
filters, controls, heating coils, water valves, etc. Also
check that the unit voltages agree with the building
parameters.

• Manually rotate fan (if applicable) to assure that there
are no obstructions within the housing.

• Claims for in-transit damage must be filed
immediately with the delivery carrier.

• For hot water re-heat units, check the coil fins and make
sure that coils are not damaged.

• Locate and verify that the correct zone sensors are with
the order. These will be marked with an orange
“Accessories Enclosed” label. Store in a secure
location until needed. Accessories lost at the job site
are NOT covered by Trane’s warranty.

• If a discrepancy occurs between what was ordered and
what is received, contact you local Trane
representative immediately.

• Read appropriate section in this manual for installation
procedures prior to starting equipment.

Introduction

Upon receiving the equipment, please inspect each unit
and components for external or internal damage. Refer to
the bill of lading to insure all equipment and accessories
have been received. Contact your local Trane sales
representative and notify the trucking company
immediately of any short ship or damaged equipment.

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 written permission. 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

Trane, VariTrane and the Trane logo are trademarks or
registered trademarks of Trane in the United States and
other countries. Trane is a business of Ingersoll Rand. All
trademarks referenced in this document are the
trademarks of their respective owners.

LonTalk is a registered trademarks of Echelon Corporation.

Revision History

VAV-SVX08E-EN (16 Sep 2014)

Updated for universal mount project.

VAV-SVX08D-EN (11 Jul 2013)

Updated model number for Sinro valve.

VAV-SVX08D-EN (27 Jun 2013)

Added Bottom Access with Cam Lock configuration and
stand alone control information for UCM 4.2, VV550
LonTalk, UC400, UC210 and WCI.

VAV-SVX08E-EN 3

Table of Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Warnings, Cautions, and Notices . . . . . . . . 2

Important Environmental Concerns . . . . . 2

Important Responsible Refrigerant

Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Receiving and Handling . . . . . . . . . . . . . . . 3

Model Number Descriptions . . . . . . . . . . . . . . 5

Single-Duct Units . . . . . . . . . . . . . . . . . . . . . . 5

Dual-Duct Units . . . . . . . . . . . . . . . . . . . . . . . 8

Fan-Powered Units . . . . . . . . . . . . . . . . . . . . 9

Unit Information . . . . . . . . . . . . . . . . . . . . . . . . 11

Single-Duct Units . . . . . . . . . . . . . . . . . . . 11

Dual-Duct Units . . . . . . . . . . . . . . . . . . . . 11

Fan-Powered and Fan-Powered

Low-Height Units . . . . . . . . . . . . . . . . . . . 12

Unit Installation . . . . . . . . . . . . . . . . . . . . . . . . 13

Unit Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

(SCR) Motor Speed Control Adjustment

Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . 28

Electrically Commutated Motor (ECM) . . 28

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . 42

Heaters with Contactors . . . . . . . . . . . . . . . 42

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Installation of Diffusers . . . . . . . . . . . . . . . . . . 53

General . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

T-Bar Ceiling . . . . . . . . . . . . . . . . . . . . . . . 53

Concealed Spline Ceiling . . . . . . . . . . . . . 53

Drywall/Plaster Ceiling . . . . . . . . . . . . . . . 54

4 VAV-SVX08E-EN

Model Number Descriptions

Single-Duct Units

Digit 1, 2 — Unit Type

VC = VariTrane Single Duct

Digit 3—Reheat

C = Cooling Only
E = Electric Heat
W = Hot Water Heat

Digit 4—Development Sequence

F= Sixth

Digit 5, 6—Primary Air Valve

04 = 4" inlet (225 cfm)
05 = 5" inlet (350 cfm)
06 = 6" inlet (500 cfm)
08 = 8" inlet (900 cfm)
10 = 10" in le t (140 0 cfm )
12 = 12" inlet (20 00 cfm)
14 = 14" inlet (300 0 cfm)
16 = 16" inlet (40 00 cfm)
24 = 24" x 16" inlet (8000 cfm)

Digit 7, 8, 9—Not Used

000= N/A

Digit 10, 11—Design Sequence

** = Factory Assigned

Digit 12, 13, 14, 15—Controls

DD00 Trane Actuator Only and

Enclosure
DD01= UCM4 Cooling Only Control
DD02= UCM4 N.C. On/Off Hot Water
DD03= UCM4 Prop. Hot Water
DD04= UCM4 Staged On/Off E-Heat
DD05= UCM4 Pulse Width MOD E-Heat
DD07= UCM4 N.O. On/Off Hot Water
DD11= VV550 DDC Controller - Cooling

Only
DD12= VV550 DDC Ctrl to operate N.C.

On/Off water valve
DD13= VV550 DDC Ctrl to operate Prop

water valve
DD14= VV550 DDC Ctrl - On/Off Electric

Heat
DD15= VV550 DDC Ctrl w/Pulse Width

Modulation
DD16= VV550 DDC Controller -

Ventilation Flow
DD17= VV550 DDC Ctrl to operate N.O.

On/Off Water Valve
DD19= VV550 DDC Controller with Flow

Trac ki ng
DD20= VV550 DDC Vent Flow cntrl to

operate N.C. water valve
DD21= VV550 DDC - Vent Flow w/ On/Off

Elec Heat
DD22= VV550 DDC Vent Flow cntrl to

operate prop water valve
DD23= VV550 DDC- Basic plus- Local

(Electric heat- PWM) Remote

(Staged EH)
DD24= VV550 DDC-Basic plus- Local

(Water heat- Modulating)

Remote (Water- N.C. 2 position)
DD25= VV550 DDC-Basic plus- Local

(Water heat- Modulating)

Remote (Water- N.O. 2 position)
DD26= VV550 DDC-Basic plus- Local

VAV-SVX08E-EN 5

DD27= VV550 DDC-Basic plus- Local

DD28= VV550 DDC-Basic plus- Local

DD29= VV550 DDC-Basic plus- Local

DD30= VV550 DDC-Basic plus- Local

DD31= VV550 DDC-Basic plus- Local

DD32= VV550 DDC-Basic plus- Local

DD33= VV550 DDC Vent Flow cntrl to

DD41= UC400 DDC-Basic (No water or

DD42= UC400 DDC-Basic (Water heat-

DD43= UC400 DDC-Basic (Water heat-

DD44= UC400 DDC-Basic (Electric heat-

DD45= UC400 DDC-Basic (Electric heat-

DD46= UC400 DDC Ventilation flow-

DD47= UC400 DDC-Basic (Water heat-

DD49= UC400 DDC-Flow Tracking

DD50= UC400 DDC-Ventilation Flow

DD51= UC400 DDC-Ventilation Flow

DD52= UC400 DDC-Ventilation Flow

DD53= UC400 DDC-Basic plus- Local

DD54= UC400 DDC-Basic plus- Local

DD55= UC400 DDC-Basic plus- Local

DD56= UC400 DDC-Basic plus- Local

DD57= UC400 DDC-Basic plus- Local

DD58= UC400 DDC-Basic plus- Local

DD59= UC400 DDC-Basic plus- Local

DD60= UC400 DDC-Basic plus- Local

DD61= UC400 DDC-Basic plus- Local

(Water heat- N.O. 2-position)
Remote (Water- Modulating)

(Water heat- N.C. 2-position)
Remote (Water- Modulating)

(Water heat- N.O. 2-position)
Remote (Water- N.O. 2-position)

(Water heat- N.C. 2-position)
Remote (Water- NC 2-position)

(Water heat- N.O. 2-position)
Remote (Water- N.C. 2-position)

(Water heat- N.C. 2-position)
Remote (Water- N.O. 2-position)

(Electric heat- Staged) Remote
(Staged EH)

operate N.O. On/Off water valve

electric heat)

N.C.- 2 position)

Modulating)

staged)

PWM)

cooling only

N.O.- 2 position)

(Cooling only)

(Water heat- N. C.- 2 position)

(Electric heat- staged)

(Water heat- Modulating)

(Electric heat- PWM) Remote
(Staged EH)

(Water heat- Modulating)
Remote (Water- N.C. 2 position)

(Water heat- Modulating)
Remote (Water- N.O. 2 position)

(Water heat- N.O. 2-position)
Remote (Water- Modulating)

(Water heat- N.C. 2-position)
Remote (Water- Modulating)

(Water heat- N.O. 2-position)
Remote (Water- N.O. 2-position)

(Water heat- N.C. 2-position)
Remote (Water- N.C. 2-position)

(Water heat- N.O. 2-position)
Remote (Water- N.C. 2-position)

(Water heat- N.C. 2-position)

DD62= UC400 DDC-Basic plus- Local

DD63= UC400 DDC-Ventilation Flow

DD65= UC400 Basic

DD66= UC400 Basic plus-Local

DD67= UC400 Ventilation Flow

DD71= UC210 DDC-Basic (No water or

DD72= UC210 DDC-Basic (Water heat-

DD73= UC400 DDC-Basic (Water heat-

DD74= UC210 DDC-Basic (Electric heat-

DD75= UC210 DDC-Basic (Electric heat-

DD76= UC210 DDC Ventilation flow-

DD77= UC210 DDC-Basic (Water heat-

DD79= UC210 DDC-Flow Tracking

DD80= UC210 DDC-Ventilation Flow

DD81= UC210 DDC-Ventilation Flow

DD82= UC210 DDC-Ventilation Flow

DD83= UC210 DDC-Basic plus- Local

DD84= UC210 DDC-Basic plus- Local

DD85= UC210 DDC-Basic plus- Local

DD86= UC210 DDC-Basic plus- Local

DD87= UC210 DDC-Basic plus- Local

DD88= UC210 DDC-Basic plus- Local

DD89= UC210 DDC-Basic plus- Local

DD90= UC210 DDC-Basic plus- Local

DD91= UC210 DDC-Basic plus- Local

DD92= UC210 DDC-Basic plus- Local

DD93= UC210 Ventilation Flow

DD95= UC210 Basic

DD96= UC210 Basic plus-Local

Remote (Water- N.O. 2-position)

(Electric heat- Staged) Remote
(Staged EH)

(Water heat- N.O. 2-position)

(Electric HeatModulating SCR)

(Electric heat-Modulating SCR)
Remote (Staged EH)

(Electric heat-Modulating SCR)

electric heat)

N.C.- 2 position)

Modulating)

staged)

PWM)

cooling only

N.O.- 2 position)

(Cooling only)

(Water heat- N. C.- 2 position)

(Electric heat- staged)

(Water heat- Modulating)

(Electric heat- PWM) Remote
(Staged EH)

(Water heat- Modulating)
Remote (Water- N.C. 2 position)

(Water heat- Modulating)
Remote (Water- N.O. 2 position)

(Water heat- N.O. 2-position)
Remote (Water- Modulating)

(Water heat- N.C. 2-position)
Remote (Water- Modulating)

(Water heat- N.O. 2-position)
Remote (Water- N.O. 2-position)

(Water heat- N.C. 2-position)
Remote (Water- N.C. 2-position)

(Water heat- N.O. 2-position)
Remote (Water- N.C. 2-position)

(Water heat- N.C. 2-position)
Remote (Water- N.O. 2-position)

(Electric heat- Staged) Remote
(Staged EH)

(Water heat- N.O. 2-position)

(Electric HeatModulating SCR)

Model Number Descriptions

(Electric heat-Modulating SCR)

DD97= UC210 Ventilation Flow

ENCL= Shaft Only in Enclosure
ENON= Shaft Out Side for Electric Units
FM00= Other Actuator and Control
FM01= Trane Supplied Actuator, Other

PC00= N.C. Actuator and Linkage Only
PC04= N.C. with DA Stat, 3000 Series
PC05= N.C. with RA STAT, 3000 Series
PCSS= Normally Closed Special
PN00= N.O. Actuator and Linkage Only
PN04= N.O. 3000 Series, DA STAT
PN05= N.O. 3000 Series, RA STAT
PN11= Auto Dual Min.
PN32= N.O. PNEU Constant Vol.
PN34= N.O. 3000 Series Constant

PNON= Shaft Out Side for Pneumatic

PNSS= Normally Open Special
N.C .= Normally-closed
N.O. = Normally-opened

DA Stat = Direct-acting pneumatic t-stat

RA Stat = Reverse-acting pneumatic

PN = Pneumatic
FM = Factory installation of customer-

PVR = Pneumatic Volume Regulator

Remote (Staged EH)

(Electric heat-Modulating SCR)

Ctrl

Vol.,RA STAT

Units

(by others)

t-stat (by others)

supplied controller

Digit 16—Insulation

A = 1/2" Matte-faced
B = 1" Matte-faced
D = 1" Foil-faced
F = 1" Double-wall
G = 3/8" Closed-cell

Digit 17 & 18—Not Used

00 = N/A

Digit 19—Outlet Plenum

(Connection is Slip & Drive)

0= None
A= 1 Outlet RH
B= 1 Outlet END
C = 1 Outlet LH
D = 2 Outlets, 1 RH, 1 END
E = 2 Outlets, 1 LH, 1 END
F = 2 Outlets, 1 RH, 1 LH
H = 3 Outlets, 1 LH, 1 RH, 1 END
J = 4 Outlets, 1 LH, 1 RH, 2 END

Note: See unit drawings for outlet sizes/

damper information.

Digit 20—Not Used

0= N/A

Digit 21—Water Coil

0= None
1= 1-Row
2= 2-Row
3= 3-Row
4= 4-Row
A= 1-Row Premium
B = 2-Row Premium
C = 3-Row Premium
D = 4-Row Premium

Digit 22—Electrical Connections

F = Flippable (can be flipped in the

field for LH or RH connections

- VCEF only)

L = Left (Airflow hitting you in the

face)

R = Right (Airflow hitting you in the

face)

0 = Opposite side connection – coil

and control (VCWF only)

Note: VCCF, VCWF can be flipped in field

for opposite-hand connection

Digit 23—Transformer

0= None
1 = 120/24 volt (50 VA)
2 = 208/24 volt (50 VA)
3 = 240/24 volt (50 VA)
4 = 277/24 volt (50 VA)
5 = 480/24 volt (50 VA)
6 = 347/24 Volt (50 VA)
7 = 380/24 Volt (50 VA)
8 = 575/24 Volt (50 VA)

Note: For VCEF units with transformers

the VA depends on the staging,
control, and contactor type
(ranges are 50 VA to 75 VA, for 1
and 3 phase)

Digit 24—Disconnect Switch

0= None
W= With

Note: VCCF, VCWF – Toggle Disconnect;

VCEF – Door Interlocking Power
Disconnect

Digit 25—Power Fuse

0= None
W= With

Digit 26—Electric Heat Voltage

0= None
A = 208/60/1
B = 208/60/3
C = 240/60/1
D = 277/60/1
E = 480/60/1
F = 480/60/3
G = 347/60/1
H = 575/60/3
J = 380/50/3
K = 120/60/1

Digit 27 - 29—Electric Heat kW

000= None
010 = 1.0 kW
015 = 1.5 kW
460 = 46.0 kW

Note: 0.5 to 8.0 kW – ½ kW increments

8.0 to 18.0 kW – 1 kW increments

18.0 to 46.0 kW – 2 kW increments

Digit 30—Electric Heat Stages

0= None
1 = 1 Stage
2 = 2 Stages Equal
3 = 3 Stages Equal

Digit 31—Electrical Heat

Contactors

0= None
1 = 24-volt magnetic
2 = 24-volt mercury
3 = PE with magnetic
4 = PE with mercury
5 = SCR heat UC400/UC210
6 = SCR heat FMTD/ENCL/DD00
A = 24-volt mercury (left hand)
B = 24-volt mercury (right hand)
C = PE with mercury (left hand)
D = PE with mercury (right hand)

Digit 32 & 33—Not Used

00 = N/A

Digit 34—Actuator

0= Standard
A = Spring Return (Normally Open)
B = Spring Return (Normally Closed)
C = Belimo Actuator

Digit 35—Sensor Options

0 = Standard (Wired)
1 = Factory Mounted Wireless

Receiver (Sensor Accessory)

2 = Wireless Comm Interface

Modular FM

Digit 36—Pre-Wired Factory
Solutions

0= None
1 = Factory Mounted DTS
2 = HW Valve Harness
3 = Both DTS & HW Valve Harness
4 = Averaging DTS factory installed

in unit (Required for
UC210/UC400 with SCR heat)

Digit 37—Bottom Access with
Cam Locks

0= None
1 = Access Left Side Terminal Unit
2 = Access Right Side Terminal Unit
3 = Access Left Side Terminal Unit

with Water Connection on Right

4 = Access Right Side Terminal Unit

with Water Coil Connection on
Left

6 VAV-SVX08E-EN

Model Number Descriptions

Digit 38—Piping Package

0= None
A = 2-way Automatic Balancing)
B = 3-way Automatic Balancing

Digit 39—Water Valve

0= None
1 = Proportional, HW Valve, 0.7 Cv
2 = Proportional, HW Valve, 2.7 Cv
3 = Proportional, HW Valve, 6.6 Cv
4 = Proportional, HW Valve, 8.0Cv

Digit 40—Flow Rate

00 = None
A = 0.5 gpm (0.03 l/s)
B = 1.0 gpm (0.06 l/s)
C = 1.5 gpm (0.09 l/s)
D = 2.0 gpm (0.13 l/s)
E = 2.5 gpm (0.16 l/s)
F = 3.0 gpm (0.19 l/s)
G = 3.5 gpm (0.22 l/s)
H = 4.0 gpm (0.25 l/s)
J = 4.5 gpm (0.28 l/s)
K = 5.0 gpm (0.31 l/s)
L = 5.5 gpm (0.35 l/s)
M = 6.0 gpm (0.38 l/s)
N = 6.5 gpm (0.41 l/s)
P = 7.0 gpm (0.44 l/s)
Q = 7.5 gpm (0.47 l/s)
R = 8.0 gpm (0.50 l/s)
S = 9.0 gpm (0.57 l/s)
T = 10.0 gpm (0.63 l/s)
U = 11.0 gpm (0.69 l/s)
V = 12.0 gpm (0.76 l/s)
W = 13.0 gpm (0.82 l/s)
X = 14.0 gpm (0.88 l/s)
Y = 15.0 gpm (0.95 l/s)
Z = 16.0 gpm (1.01 l/s)
1 = 17.0 gpm (1.07 l/s)
2 = 18.0 gpm (1.14 l/s)
3 = 19.0 gpm (1.20 l/s)
4 = 20.0 gpm (1.26 l/s)
5 = 21.0 gpm (1.32 l/s)
6 = 22.0 gpm (1.39 l/s)
7 = 23.0 gpm (1.45 l/s)

VAV-SVX08E-EN 7

Model Number Descriptions

Dual-Duct Units

Digit 1, 2, 3—Unit Type

VDD= VariTrane dual-duct

Digit 4—Development Sequence

F= Sixth

Digit 5, 6—Primary Air Valve

05 = 5" inlet (350 cfm)
06 = 6" inlet (500 cfm)
08 = 6" inlet (900 cfm)
10 = 10" in le t (140 0 cfm )
12 = 12" inlet (20 00 cfm)
14 = 14" inlet (300 0 cfm)
16 = 16" inlet (40 00 cfm)

Digit 7, 8—Secondary Air Valve

05 = 5" inlet (350 cfm)
06 = 6" inlet (500 cfm)
08 = 8" inlet (900 cfm)
10 = 10" in le t (140 0 cfm )
12 = 12" inlet (20 00 cfm)
14 = 14" inlet (300 0 cfm)
16 = 16" inlet (40 00 cfm)

Digit 9—Not Used

0= N/A

Digit 10, 11—Design Sequence

** = Factory Assigned

Digit 12, 13, 14, 15—Controls

DD00= Trane Actuator Only
DD01= UCM4 Cooling Only Control
DD08= UCM4 Dual Duct

Constant Volume
DD11= VV550 DDC Controller -

Cooling Only
DD18= VV550 DDC Controller w

Constant Volume
DD41= UC400 DDC-Basic (No water or

electric heat)
DD48= UC400 DDC-Basic (Constant

Vol ume)
DDSS= Digital Special
ENON= Shaft Out Side for Electric

Units
FM00= Other Actuator and Control
FM01= Trane Supplied Actuator, Other

Ctrl
PC03= NC Heating Valve, N.O. Cooling

Val ve
PCSS= Normally Closed Special
PN08= N.O. Heat/Cool Actuators &

Linkage Only
PN09= N.O. Heating, N.O. Cooling,

w/PVR’s
PN10= N.O. Heating, N.O. Cooling,

w/PVR’s (CV DISCH)
PNON= Shaft Out Side for Pneumatic

Units
PNSS= Normally Open Special

Notes:

N.C. = Normally-closed
N.O. = Normally-opened
DA Stat = Direct-acting pneumatic t-stat
(by others)
RA Stat = Reverse-acting pneumatic t­stat (by others)
PN = Pneumatic
FM = Factory installation of customer-

supplied controller
PVR = Pneumatic Volume Regulator

Digit 16—Insulation

A = 1/2" Matte-faced
B = 1" Matte-faced
D = 1" Foil-faced
F = 1" Double-wall
G = 3/8" Closed-cell

Digit 17—Not Used

0= N/A

Digit 18—Not Used

0= N/A

Digit 19—Outlet Plenum
(Connection is slip & drive)

0 = none
A = 1 outlet–RH
B = 1 outlet–END
C = 1 outlet–LH
D = 2 outlets–1 RH, 1 END
E = 2 outlets–1 LH, 1 END
F = 2 outlets–1 RH, 1 LH
G = 2 outlets - END
H = 3 outlets–1 LH, 1 RH, 1 END
J = 4 outlets–1 LH, 1 RH, 2 END

Note: See unit drawings for outlet sizes/

damper information.

Digit 20—Not Used

0= N/A

Digit 21—Not Used

0= N/A

Digit 22—Not Used

0= N/A

Digit 23—Transformer

0= None
1 = 120/24 volt (50 VA)
2 = 208/24 volt (50 VA)
3 = 240/24 volt (50 VA)
4 = 277/24 volt (50VA)
5 = 480/24 volt (50 VA)
6 = 347/24 volt (50 VA)
7 = 575/24 volt (50 VA)

Digit 24—Disconnect Switch

0= None
W = With Toggle

Digit 25—Power Fuse

0= None
W= With

Digit 26—Not Used

0= N/A

Digit 27—Not Used

0= N/A

Digit 28—Not Used

0= N/A

Digit 29—Not Used

0= N/A

Digit 30—Not Used

0= N/A

Digit 31—Not Used

0= N/A

Digit 32—Not Used

0= N/A

Digit 33—Special Options

0= None
X = Varies - Factory Assigned

Digit 34—Actuator

A = Belimo Actuator

Digit 35—Wireless Sensor

0 = Sensor/Receiver Standard
1 = Wireless Sensor/Receiver

Mounted

Note: All sensors selected in

accessories

Digit 36—Duct Temp Sensor

0= None
1 = With Duct Temp Sensor

8 VAV-SVX08E-EN

Model Number Descriptions

Fan-Powered Units

Digit 1, 2—Unit Type

VP = VariTrane Fan-Powered Parallel
VS = VariTrane Fan-Powered Series
LP = VariTrane Fan-Powered

Low-Height Parallel
LS = VariTrane Fan-Powered

Low-Height Series

Digit 3—Reheat

C = Cooling Only
E = Electric Heat
W = Hot Water Heat

Digit 4—Development Sequence

F= Sixth

Digit 5, 6—Primary Air Valve

05 = 5" inlet (350 max cfm)
06 = 6" inlet (500 max cfm)
08 = 8" inlet (900 max cfm)
10 = 10" in le t (140 0 max cf m)
12 = 12" inlet (2000 max cfm)
14 = 14" inlet (3000 max cfm)
16 = 16" inlet (4000 max cfm)
RT = 8" x 14" inlet (1800 max CFM)

Note: 10, 12, 14, 16 Not Available on

Low-Height

Digit 7, 8—Secondary Air Valve

00 = N/A

Digit 9—Fan

P = 02SQ fan (500 nominal cfm)
Q = 03SQ fan (1100 nominal cfm)
R = 04SQ fan (1350 nominal cfm)
S = 05SQ fan (1550 nominal cfm)
T = 06SQ fan (1850 nominal cfm)
U = 07SQ fan (2000 nominal cfm)
V = 08SQ Fan (500 nominal cfm)
W = 09SQ Fan (900 nominal cfm)
X = 10SQ Fan (1800 nominal cfm)

Digit 10, 11—Design Sequence

** = Factory assigned

Digit 12, 13, 14, 15—Controls

DD01= Cooling Only Control
DD02= N.C. On/Off Hot Water
DD03= Prop. Hot Water
DD04= Staged On/Off E-Heat
DD05= Pulse Width Mod of E-Heat
DD07= N.O. On/Off Hot Water
DD11= VV550 DDC Controller - Cooling

Only
DD12= VV550 DDC Ctrl w/N.C. On/Off

HW Valve
DD13= VV550 DDC Ctrl w/Prop. HW

Valve
DD14= VV550 DDC Ctrl - On/Off

Electric Heat
DD15= VV550 DDC Ctrl w/Pulse Width

Modulation
DD17= VV550 DDC Ctrl w/N.O. On/Off

HW Valve
DD23= VV550 DDC- Basic plus- Local

(Electric heat- PWM) Remote

(Staged EH)
DD28= VV550 DDC-Basic plus- Local

(Water heat- N.O. 2-position)

Remote (Water- N.O. 2-position)

DD29= VV550 DDC-Basic plus- Local

(Water heat- N.C. 2-position)
Remote (Water- N.C. 2-position)

DD30= VV550 DDC-Basic plus- Local

(Water heat- N.O. 2-position)
Remote (Water- N.C. 2-position)

DD31= VV550 DDC-Basic plus- Local

(Water heat- N.C. 2-position)
Remote (Water- N.O. 2-position)

DD32= VV550 DDC-Basic plus- Local

(Electric heat- Staged) Remote
(Staged EH)

DD41= UC400 DDC-Basic (No water or

electric heat)

DD42= UC400 DDC-Basic (Water heat-

Normally Closed- 2 position)

DD43= UC400 DDC-Basic (Water heat-

Modulating)

DD44= UC400 DDC-Basic (Electric heat-

staged)

DD45= UC400 DDC-Basic (Electric heat-

PWM)

DD47= UC400 DDC-Basic (Water heat-

Normally Opened- 2 position)

DD53= UC400 DDC-Basic plus- Local

(Electric heat- PWM) Remote
(Staged EH)

DD58= UC400 DDC-Basic plus- Local

(Water heat- N.O. 2-position)
Remote (Water- N.O. 2-position)

DD59= UC400 DDC-Basic plus- Local

(Water heat- N.C. 2-position)
Remote (Water- N.C. 2-position)

DD60= UC400 DDC-Basic plus- Local

(Water heat- N.O. 2-position)
Remote (Water- N.C. 2-position)

DD61= UC400 DDC-Basic plus- Local

(Water heat- N.C. 2-position)
Remote (Water- N.O. 2-position)

DD62= UC400 DDC-Basic plus- Local

(Electric heat- Staged) Remote
(Staged EH)

DD65= Basic (Electric Heat- Modulating

SCR)

DD66= Basic plus – Local (Electric heat –

Modulating SCR) Remote
(Staged EH)

DD71= UC210 DDC-Basic

(Cooling only)

DD72= UC210 DDC-Basic

(Water heat-nc 2pos)

DD73= UC210 DDC-Basic

(Water heat-Modulating)

DD74= UC210 DDC-Basic

(Electric heat-staged)
DD75= UC210 DDC-Basic
(Electric heat-pwm)
DD77= UC210 DDC-Basic

(Water heat-NO 2pos)
DD83= UC210 DDC-Basic+ Local

(Electric heat-pwm)

Remote (Staged)
DD84= UC210 DDC-Basic+ Local

(Water heat Modulating)

Remote (Water-NC 2pos)
DD85= UC210 DDC-Basic+ Local

(Water heat Modulating)

Remote (Water-NO 2pos)

DD86= UC210 DDC-Basic+ Local

(Water heat NO 2pos)

Remote (Water-Modulating)

DD87= UC210 DDC-Basic+ Local

(Water heat NC 2pos)
Remote (Water-Modulating)

DD88= UC210 DDC-Basic+ Local

(Water heat NO 2pos)
Remote (Water-NO 2pos)

DD89= UC210 DDC-Basic+ Local

(Water heat NC 2pos)
Remote (Water-NC 2pos)

DD90= UC210 DDC-Basic+ Local

(Water heat NO 2pos)
Remote (Water-NC 2pos)

DD91= UC210 DDC-Basic+ Local

(Water heat NC 2pos)
Remote (Water-NO 2pos)

DD92= UC210 DDC-Basic+ Local

(Electric heat-staged)
Remote (Staged)

DD95= UC210 DDC-Ctrl w/Modulating

SCR

DD96= UC210 DDC-Space Temp Ctrl w/

Local SCR & Remote Stge Elec

Heat
DD00= Trane Actuator Only
ENCL= Shaft Only in Enclosure
ENON= Shaft Out Side for Electric Units
FM00= Other Actuator and Control
FM01= Trane supplied actuator,

other control
PN00= N.O. Actuator and Linkage Only
PN05= N.O. 3000 Series, RA Stat
PN51= Pneumatic normally open

w/3011,DPS fan
PN52= Pneumatic normally open

w/3011, DPM fan
PNON= Shaft Out Side for Pneumatic

Units

Notes:

N.C. = Normally-closed
N.O. = Normally-opened
DA Stat = Direct-acting pneumatic t-stat

(by others)

RA Stat = Reverse-acting pneumatic

t-stat (by others)
PN = Pneumatic
FM = Factory installation of customer-

supplied controller
PVR = Pneumatic Volume Regulator

Digit 16—Insulation

A = 1/2” Matte-faced
B = 1" Matte-faced
D = 1" Foil-faced
F = 1" Double-wall
G = 3/8” Closed-cell

Digit 17—Motor Type

D = PSC Motor
E = High-efficiency motor (ECM)

Digit 18—Motor Voltage

1 = 115/60/1
2 = 277/60/1
3 = 347/60/1
4 = 208/60/1
5 = 230/50/1

VAV-SVX08E-EN 9

Model Number Descriptions

Digit 19—Outlet Connection

1 = Flanged
2 = Slip & Drive

Digit 20—Attenuator

0 = No Attenuator
W = With Attenuator

Digit 21—Water Coil

0= None
1 = 1-Row–Plenum inlet installed RH
2 = 2-Row–Plenum inlet installed RH
3 = 1-Row–Discharge installed, LH
4 = 1-Row–Discharge installed, RH
5 = 2-Row–Discharge installed, LH
6 = 2-Row–Discharge installed, RH1
A = 1-Row–Premium water coil inlet
B = 2-Row–Premium water coil inlet
C = 1-Row–Premium hot coil

on discharge, LH

D = 1-Row–Premium hot coil

on discharge, RH

E = 2-Row–Premium hot coil

on discharge, LH

F = 2-Row–Premium hot coil

on discharge, RH

Note: 1- and 2-row not available with

Low-Height

Digit 22—Electrical Connections

L = Left (Airflow hitting you in the

face)

R = Right (Airflow hitting you in the

face)

W = Narrow Corridor LH, Hi-Volt Inlet

Facing

X = Narrow Corridor RH, Hi-Volt Inlet

Facing

Note: (W & X) Fan Powered Series Only

Digit 23—Transformer

0 = N/A (provided as standard)

Digit 24—Disconnect Switch

0= None
W= With
Electric Reheat w/ door interlocking
power disconnect, Cooling Only and
Water Reheat w/ toggle disconnect

Digit 25—Power Fuse

0= None
W= With

Digit 26—Electric Heat Voltage

0= None
A = 208/60/1
B = 208/60/3
C = 240/60/1
D = 277/60/1
E = 480/60/1
F = 480/60/3
G = 347/60/1
H = 575/60/3
J = 380/50/3
K = 120/60/1

Note: K not available with Low Height

Digit 27, 28, 29—Electric Heat
kW

000= None
050 = 0.5 kW
010 = 1.0 kW
015 = 1.5 kW
260 = 26.0 kW

Note: Electric Heat Voltage -

0.5 to 8.0 kW–½ kW increments

8.0 to 18.0 kW –1 kW increments

18.0 to 46.0 kW–2 kW increments

Digit 30—Electric Heat Stages

0= None
1 = 1 Stage
2 = 2 Stages Equal
3 = 3 Stages Equal

Note: 3 not available with Low Height

Digit 31—Contactors

0= None
1 = 24-volt magnetic
2 = 24-volt mercury
3 = PE with magnetic
4 = PE with mercury
5 = SCR heat UC400
6 = SCR heat FMTD/ENCL/DD00

Note: SCR cannot be selected with the

following configuration:

• KW > 10, 208 volt 3 phase, Low

Height

• KW > 22, 480 volt 3 phase, Low

Height

• Voltage = 575 volt

Digit 32—Airflow Switch

0= None
W= With

Digit 33—Not Used

0= N/A

Digit 34—Actuator

0 = Standard
A = Belimo actuator

Digit 35—Wireless Sensors

0= None
1 = Factory Mounted Wireless

Receiver (Sensor Assembly)

2 = Wireless Comm Interface

Modular FM

Note: All sensors selected in

accessories

Digit 36—Pre-Wired Factory
Solutions

0= None
1 = Factory Mounted DTS
2 = HW Valve Harness
3 = Both DTS & HW Valve Harness

Digit 37—Bottom Access

0= None
W = Access Left Side of Terminal Unit

Digit 38—Piping Package

0= None
A = 2-way Automatic Balancing)
B = 3-way Automatic Balancing

Digit 39—Water Valve

0= None
1 = Proportional, HW Valve, 0.7 Cv
2 = Proportional, HW Valve, 2.7 Cv
3 = Proportional, HW Valve, 6.6 Cv
4 = Proportional, HW Valve, 8.0Cv

Digit 40—Flow Rate

0= None
A = 0.5 gpm (0.03 l/s)
B = 1.0 gpm (0.06 l/s)
C = 1.5 gpm (0.09 l/s)
D = 2.0 gpm (0.13 l/s)
E = 2.5 gpm (0.16 l/s)
F = 3.0 gpm (0.19 l/s)
G = 3.5 gpm (0.22 l/s)
H = 4.0 gpm (0.25 l/s)
J = 4.5 gpm (0.28 l/s)
K = 5.0 gpm (0.31 l/s)
L = 5.5 gpm (0.35 l/s)
M = 6.0 gpm (0.38 l/s)
N = 6.5 gpm (0.41 l/s)
P = 7.0 gpm (0.44 l/s)
Q = 7.5 gpm (0.47 l/s)
R = 8.0 gpm (0.50 l/s)
S = 9.0 gpm (0.57 l/s)
T = 10.0 gpm (0.63 l/s)
U = 11.0 gpm (0.69 l/s)
V = 12.0 gpm (0.76 l/s)
W = 13.0 gpm (0.82 l/s)

10 VAV-SVX08E-EN

Unit Information

Single-Duct Units

The basic unit consists of a sheet metal casing with an air
valve, which is used to modulate the air being delivered
into the occupied zone. The unit is designed to modulate
either cooling or heating air between the temperatures of
40°F and 140°F. Air enters the air valve through the round
or rectangular inlet and exits into the sheet metal casing to
be distributed to the zone either through integral round
outlets in the casing or through rectangular duct attached
to the discharge of the unit.

The basic unit can also be ordered with factory-mounted
electric or hot water heating coils attached to the
discharge. See Figure 2, p. 11.

These re-heat units are used primarily to reheat air-to-zone
temperature when the load in the occupied space is low.

Primary air is modulated through the VariTrane air valve by
rotating the damper blade. All air valves have a round/
rectangular inlet for easy fit-up with incoming duct work.

Typical Single-Duct Units

Figure 1. Typical single duct unit — VCCF

Figure 2. Typical single duct unit — VCWF

Figure 3. Typical single duct unit — VCEF

Dual-Duct Units

Dual-duct units provide two air valves: one as heating
primary air and the other as cooling primary air. Both
discharge into the common outlet, which leads to the zone
being controlled. See Figure 4, p. 11.

Units are provided with a slip and drive rectangular duct
connection or can be ordered with integral outlet plenum.

Sequencing of hot and cold air valve is dependent on job
requirements. One typical control is valves working in
conjunction to respond to zone temperature.

When the cooling valve becomes fully closed or reaches a
specified minimum, the heating valve will begin to
modulate or vice versa. The typical result is that air flowing
to the zone varies from maximum down to a minimum and
back up to maximum as load varies and controls would
cause one air valve to close and the other to open.

Another typical application is when the unit provides a
constant volume to the zone. When the zone sensor is tied
directly to the heating valve, it will modulate the heating
valve according to the zone temperature.

When the heating valve is fully closed or there is a call for
cooling in the zone, the cooling valve will be at constant
supply. As the space becomes too cool, the heating valve
will modulate open, decreasing the cooling valve flow. The
typical result is that the air flowing into the zone stays at a
constant flow whether the unit is heating or cooling.

Figure 4. Typical dual-duct unit: VDDF

VAV-SVX08E-EN 11

Unit Information

Fan-Powered and Fan-Powered Low­Height Units

VariTrane fan-powered and low-height fan-powered units
can be either parallel or series, with or without re-heat.
(SeeFigure 5, p. 12 thru Figure 8, p. 12.)

Typical Fan-Powered Units

Figure 5. Parallel fan-powered terminal unit (top) &

series fan-powered terminal units (bottom)

Figure 6. Low height series: LSCF (top) & low height

series: LSWF (bottom)

Figure 7. Low height series: LSEF (top) & low height

parallel: LPCF (bottom)

Figure 8. Low height parallel: LPWF (top) & low height

parallel: LPEF (bottom)

The fan on a series unit runs continuously whenever the
main air handler unit is in operation. There are various
options for starting the fan. The fan can be started three
ways: 1) remotely, 2) by a duct pressure switch, or 3) by a
combination of both. The particular fan control method
may vary from unit to unit, depending upon job needs.

Typically, heater is off while air valve modulates primary
air and responds to zone temperature. If zone temperature
decreases to the point where a decrease in primary air will
not maintain the desired temperature, the re-heat will be
activated to increase the temperature of the discharge air.

On a parallel unit, the VariTrane air valve delivers primary
cooling air to the unit outlet. When the space temperature
decreases beyond air valve control, the fan is turned on as
the first stage of heat. The fan delivers plenum air from
above the occupied space to the unit outlet, which is mixed
with primary air and delivered to the occupied space.

Note: Either the fan, the air valve, or both can deliver

airflow into the occupied space. In order to prevent
primary airflow from exiting through the fan when
the fan is not running on a parallel unit, a back draft
damper is provided. When the fan is not running,
the efficiency of this system is the same as a
standard single-duct VAV unit.

Typically, the control systems applied to parallel units
cause the air valve to close to zero or a minimum flow
before the fan is activated. After the fan is activated, the
optional heat will be activated upon further reduction in
zone temperature. Therefore, minimal primary air is mixed
with the heated air.

VariTrane fan-powered unit fan sizes 02SQ–05SQ and
08SQ–10SQ were performance tested at .12 in. w.g. and
sizes 06SQ and 07SQ were tested at .15 in. w.g. Units are
not designed to operate unducted and below these tested
static pressures.

Note: Fan-powered units are available with rectangular

discharge connection only. The optional heater is
mounted on the discharge of the unit. Hot water
coils are connected to either the plenum inlet or on
the discharge on parallel units, and to the discharge
of series units.

12 VAV-SVX08E-EN

Unit Installation

Inlet Size

B C A

1.376" (35 mm)

25.154" (639 mm) 1.376" (35 mm)

37.25" (946 mm)

25.25" (641 mm) 23.154" (588 mm)

12" thru 16"

5" thru 10"

AIR

VALVE

AIR

VALVE

COOLING

HEATING

C

A

B

TOP VIEW

WARNING

Proper Structural Support Required!

Ceiling structure must be strong enough to support the
weight of the unit. If unsure, check with a structural
engineer. Refer toTable 1, p. 24 thruTable 6, p. 26 for unit
weights. Failure to ensure proper structural ceiling
support could result in unit failing from its location
which could result in death or serious injury.

Due to their weight, the VAV terminal units should be
suspended from the uppermost ceiling, independent of
the false ceiling grid. Suspension devices are to be
supplied by the installer. Units must be installed level and
upright. Failure to level the unit properly may prevent
proper operation of the controls and/or terminal unit.
Units are not designed to be installed vertically.
Consequently, this will also void the UL ratings and any
warranty on the unit.

Single-Duct

Figure 9. Single-duct hanging recommendations

.

Figure 10. Dual-duct hanger bracket locations

Fan-Powered (Standard and Low-Height)

Fan-powered units should be supported by either hanger
straps or by using a threaded rod in conjunction with the
hanger brackets that are provided on the unit. Care should
be exercised to insure that the hanging straps do not block
the side access panel. See Figure 11, p. 16 thru Figure 18,

p. 22.

Depending upon the size and weight of the single-duct
unit, it may be capable of being supported by the ductwork
that is connected to it. No hanger brackets are provided on
these units since the unit should be supported by means
of a hanger strap. The hanger strap should be secured
directly to the unit casing as shown in Figure 9, p. 13.

For cooling only single-duct units or single-duct units with
hot water coil, the unit may be rotated 180° for opposite
side connections.

For units with electric heat, the unit can be flipped to either
RH or LH connection orientation if model number digit 22
Electrical Connections = F.

Dual-Duct

Dual-duct units should be supported by either hanger
straps or by using a threaded rod in conjunction with the
hanger brackets that are provided on the unit. See

Figure 10, p. 13.

Duct Connections

All VariTrane units should be provided with a minimum of

1.5-duct diameters of straight duct prior to the inlet of the
unit. It is recommended that at least 48 inches of straight
duct be provided from the discharge of the units prior to
any take-offs or transitions.

Important: This is a requirement for electric heat fan-

powered units used in applications with
100% downward discharge.

Note: In order to maintain good air distribution over the

elements and not create turbulence which could
cause a limit cutout there should be four feet of
ductwork, consistent of the discharge dimensions
of the heater. downstream of the reheat coil prior to
any diffuser takeoffs for VariTrane™ electric coils.

1. After all connections are made, check that the entire
ductwork system is airtight. In some high-pressure
systems, duct sealer may be necessary.

Note: All inlet duct on the VAV boxes are sized

approximately 1/8" smaller in diameter than the
nominal size in order to allow the incoming duct
to slide over the inlet of the VAV box.

2. Provide insulation around the entire inlet collar (all the
way to the unit casing).

VAV-SVX08E-EN 13

Unit Installation

Note: Use caution not to damage the flow tubes when

making ductwork connections or insulating.

3. Cut “slits” in the insulation for the flow tubes and
secure with duct tape.

4. If the unit is to be installed in a location with high
humidity, external insulation around the heating coil
should be installed as required.

Water Coil Connections

Note: The following coils have 3/8” OD water coil piping

connections.

• Single Duct 1-row coils (inlet sizes 05, 05, 06, 08
or 10 only)

• Low Height Parallel Inlet 1-row

• Low Height Parallel Discharge 1-row

All others require a 7/8” OD water coil piping connections.

Note:

1. If necessary, you can change the coil connection from
left-handed to right-handed (and vice-versa) by
disconnecting the coil from the unit and rotating the
coil “like a steering wheel” 180°.

Note: Exception - Coil connection cannot be changed

on parallel fan powered unit with hot water coil
on plenum inlet.

2. Use port at the bottom for inlet and top for outlet on
single row coils. For multirow coils, always plumb in
counter flow orientation.

• Water inlet is always on the airflow downstream

side of the hot water coil.

• Water outlet is always on the upstream side of the

hot water coil.

3. Care should be taken to properly support the water coil
piping connections while connecting the adjoining
pipe.

4. It is recommended that piping to the water coil should
be done after field-mounted controls, external
insulation, and ductwork connections have been
completed.

Important: Do not connect water valve or pipe

extensions to the water coil connections
unless supported.

Unit Accessibility

• Single-duct and dual-duct units provided with hot
water reheat have an access panel located on the side
of the water coil. All other single-duct and dual-duct
units are provided without access, as all functioning
components are external to the unit.

• Fan-powered terminals are provided with a sliding side
access.

• Low-height terminal units have a removable bottom
panel.

Clearances

For proper service, it is recommended that at least 36” of
side clearance be provided to service and access single­duct and dual-duct terminals units.

• Fan-powered VAV units have a plenum inlet that must
be clear of obstructions. Allow at least 36” of clearance
in front of the side access and plenum opening.

• Low-height fan-powered terminals require the same
plenum clearance requirement that applies to the
standard fan-powered units. However the access to the
internal components is located on the bottom of the
unit.

It is also recommended that 6” of clearance be provided to
the top and bottom of all the units.

Note: The minimum clearance for controls and heater

controls should be 36” for all models except units
with 575-volt electric heaters, which require 48” of
clearance. NEC and/or local codes override all
clearance requirements.

Actuator Mounting

Important: When installing or replacing the actuator

tighten the actuator set screw per the
manufacturer’s instructions. Failure to
follow the manufacturer’s specifications
may result in unit malfunction.

Trane offers a factory-mounted actuator with a 90-second
drive time. The actuator drives 1 degree per second. A
field-installed actuator may be used if desired. The
actuator shaft has a ½-inch diameter and is designed to
travel clockwise to close the damper and counter­clockwise to open the damper. There is an indicator on the
end of the actuator shaft that can be used to determine the
position of the damper.

Stand Alone UCM 4.2

When there is no communication to the UCM control and
the unit is in the stand alone mode the control action is
determined by the auxiliary temperature sensor located
on TB3-5 and TB3-6 terminals on the UCM board. In order
for the auxiliary sensor to determine the control action
(heat, cool) it must be located in the supply duct. The
auxiliary temperature is then compared to the zone
temperature. If the supply air temperature is 10 degrees
above the zone temperature, then the control action will be
heat. If the supply air temperature is less than or equal to
the zone temperature, then the control action will be cool.
If the supply air temperature is between the zone
temperature and the zone temperature + 10ºF (5.5°C)(zone
temperature < supply air temperature < zone temperature
+ 10ºF) (5.5°C), the control action remains the same and the
UCM controls to the minimum flow set point. If an
auxiliary sensor is not installed the UCM will retain the last
control action in effect

.

14 VAV-SVX08E-EN

Stand Alone VV550 LonTalk™ Control

When there is no communication to the VV550 control and
the unit is in the stand alone mode the control action is
determined by the auxiliary temperature sensor located
on TB3-5 and TB3-6 terminals on the VV550 board. The
control must also be configured through the “Inputs Tab”
of Analog Input 4 as “Primary Supply Air Sensor”. In order
for the auxiliary sensor to determine the control action
(heat, cool) it must be located in the supply inlet of the
duct. The auxiliary temperature is then compared to the
zone temperature. If the supply air temperature is 10
degrees above the zone temperature, then the control
action will be heat. If the supply air temperature is less
than or equal to the zone temperature, then the control
action will be cool. If the supply air temperature is between
the zone temperature and the zone temperature + 10ºF
(5.5°C)(zone temperature < supply air temperature < zone
temperature + 10ºF) (5.5°C), the control action remains the
same and the UCM controls to the minimum flow set
point. If an auxiliary sensor is not installed the UCM will
retain the last control action in effect.

Stand Alone UC400

When there is no communication to the UC400 control and
the unit is in the stand alone mode the control action is
determined by the auxiliary temperature sensor located
on AI5 terminals on the UC400 control. This input may
have to be changed from AI4 (Discharge Air Input) as wired
from the factory. In order for the auxiliary sensor to
determine the control action (heat, cool) it must be located
in the supply inlet of the duct. The auxiliary temperature is
then compared to the zone temperature. If the supply air
temperature is 10 degrees above the zone temperature,
then the control action will be heat. If the supply air
temperature is less than or equal to the zone temperature,
then the control action will be cool. If the supply air
temperature is between the zone temperature and the
zone temperature + 10ºF (5.5°C)(zone temperature <
supply air temperature < zone temperature + 10ºF) (5.5°C),
the control action remains the same and the UCM controls
to the minimum flow set point. If an auxiliary sensor is not
installed the UCM will retain the last control action in
effect.

Unit Installation

VAV-SVX08E-EN 15

Unit Installation

Water

Coil

Airflow

Plenum Inlet

Optional Attenuator

Field Installed

Primary

Airflow

TOP VIEW

Parallel Cooling & Hot Water

Flow Ring

Tubing

Air

Valve

Airflow

Discharge Outlet

A

B

C

D

EF

ADE

F

B

C

FAN SIZE

02SQ

03SQ, 04SQ, 05SQ

06SQ, 07SQ

26.75" (679 mm)

26.75" (679 mm)

26.75" (679 mm)

26.75" (679 mm)

29.75" (756 mm)

36.75" (933 mm)

41.154" (1041 mm)

41.154" (1041 mm)

41.154" (1041 mm)

3.25" (83 mm)

3.25" (83 mm)

3.25" (83 mm)

20.00" (508 mm)

20.00" (508 mm)

20.00" (508 mm)

38.95" (989 mm)

38.95" (989 mm)

38.95" (989 mm)

Airflow

Plenum Inlet

Optional Attenuator

Field Installed

Primary

Airflow

TOP VIEW

Parallel Electric Heat

Flow Ring

Tubing

Air

Val ve

Airflow

Discharge Outlet

A

D

EF

B

C

Heater

Terminal Box

43.546

(1106 mm)

Figure 11. Parallel hanger bracket locations sizes

16 VAV-SVX08E-EN

Figure 12. Series hanger bracket locations

Water

Coil

Airflow

Plenum Inlet

Optional Attenuator

Field Installed

TOP VIEW

Series Cooling & Hot Water

Flow Ring

Tubing

Air

Valve

A

D

B

C

TOP VIEW

Series Electric Heat

1.

1.

2.

1.625"

(41 mm)

All attenuators are the same length and width.

Sizes 01 and 02 units are smaller than attenuators.

Airflow

Plenum Inlet

Optional Attenuator

Field Installed

Flow Ring

Tubing

Air

Valve

A B

Electric

Heater

D

G

F

C

B

B

C

A D E

FAN SIZE

(Elec. Heat Only)

3.25" (83 mm)

3.25" (83 mm)

3.25" (83 mm)

3.25" (83 mm)

41.154" (1041 mm)

41.154" (1041 mm)

41.154" (1041 mm)

41.154" (1041 mm)

41.154" (1041 mm)

41.154" (1041 mm)

41.154" (1041 mm)

26.75" (679 mm)

26.75" (679 mm)

26.75" (679 mm)

26.75" (679 mm) 02SQ

06SQ, 07SQ

03SQ, 04SQ

05SQ 26.75" (679 mm)

20.75" (527 mm)

18.75" (476 mm)

27.25" (692 mm)

35.154 (740 mm)

23.875 (606 mm)

29.875" (759 mm)

28.966" (736 mm)

20.132" (511 mm)

Fan Inlet w/o

Attenuator

Fan Inlet w/o

Attenuator

F

C

E

2.

J

(Elec. Heat Only)

59.750” (1517 mm)

58.250" (1479 mm)

59.750" (1517 mm)

53.750" (1365 mm)

G

(Elec. Heat Only)

19.00" (483 mm)

17.50" (445 mm)

19.00" (483 mm)

19.00" (483 mm)

J

Unit Installation

VAV-SVX08E-EN 17

Unit Installation

31.65"

(804 mm)

23.90"

(607 mm)

13.00"

(330 mm)

19.86"

(504 mm)

Airflow

Plenum Inlet

Optional Attenuator

Field Installed

24.30"

(617 mm)

Primary

Airflow

Airflow

Discharge Outlet

13.80"

(350 mm)

4.00"

(102 mm)

23.10"

(587 mm)

3.35"

(85 mm)

TOP VIEW

TOP VIEW

3.35"

(85 mm)

Airflow

Discharge Outlet

31.65"

(804 mm)

23.90"

(607 mm)

13.00"

(330 mm)

19.86"

(504 mm)

Airflow

Plenum Inlet

Optional Attenuator

Field Installed

24.30"

(617 mm)

Primary

Airflow

13.80"

(350 mm)

4.00"

(102 mm)

23.10"

(587 mm)

3.00"

(76 mm)

Heater

Terminal Box

Figure 13. Low-height parallel 08SQ/09SQ w/hot water or electric heat

18 VAV-SVX08E-EN

Figure 14. Low-height parallel 10SQ

Primary

Airflow

Air

Valve

38.95"

(989 mm)

1.625"

(41 mm)

Flow Ring

Tubing

5.625"

(143 mm)

41.137"

(1045 mm)

Airflow

Discharge Outlet

Optional Heater

Terminal Box

5.625"

(143 mm)

TOP VIEW

38.75"

(984 mm)

Plenum

Inlet

Unit Installation

VAV-SVX08E-EN 19

Unit Installation

g

19.86"

(504 mm)

3.35"

(85 mm)

31.65"

(804 mm)

12.85"

(326 mm)

10.13"

(257 mm)

4.00"

(102 mm)

34.30"

(871 mm)

10.13"

(257 mm)

3.35"

(85 mm)

4.00"

(102 mm)

27.00"

(686 mm)

20.00"

(508 mm)

Primary

Airflow

Air

Valv e

Airflow

Plenum Inlet

Optional Attenuator

Field Installed

Wate r

Coil

Primary

Airflow

Airflow

TOP VIEW

19.86"

(504 mm)

3.35"

(85 mm)

31.65"

(804 mm)

12.85"

(326 mm)

34.30"

(871 mm)

3.35"

(85 mm)

27.00"

(686 mm)

20.00"

(508 mm)

Air

Val ve

Airflow

Plenum Inlet

Optional Attenuator

Field Installed

Optional

Electric Heater

Airflow

TOP VIEW

Figure 15. Low-height series 08SQ/09SQ w/hot water or electric heat

20 VAV-SVX08E-EN

Figure 16. Low-height series 10SQ w/hot water or electric heat

31.65"

(804 mm)

19.86"

(504 mm)

Airflow

Plenum Inlet

Optional Attenuator

Field Installed

31.65"

(804 mm)

Primary

Airflow

Airflow

Discharge Outlet

10.12"

(257 mm)

42.00"

(1067 mm)

30.30"

(770 mm)

3.35"

(85 mm)

TOP VIEW

Optional Attenuator

Field Installed

Airflow

Plenum Inlet

19.45"

(494 mm)

19.45"

(494 mm)

19.86"

(504 mm)

3.35"

(85 mm)

3.50"

(89 mm)

3.50"

(89 mm)

31.65"

(804 mm)

19.86"

(504 mm)

Airflow

Plenum Inlet

Optional Attenuator

Field Installed

31.65"

(804 mm)

Primary

Airflow

Airflow

Discharge Outlet

10.12"

(257 mm)

42.00"

(1067 mm)

30.30"

(770 mm)

3.35"

(85 mm)

TOP VIEW

Optional Attenuator

Field Installed

Airflow

Plenum Inlet

19.45"

(494 mm)

19.45"

(494 mm)

19.86"

(504 mm)

3.35"

(85 mm)

3.50"

(89 mm)

3.50"

(89 mm)

1.92"

(49 mm)

Terminal Box

Plenum Area

Optional

Heater

Unit Installation

VAV-SVX08E-EN 21

Unit Installation

Mounting Bracket

Optional Attenuator
Field Installed

1. Attach attenuator as shown with provided mounting brackets.

Optional Attenuator
Field Installed

Mounting Bracket

1. Attach attenuator as shown with provided mounting brackets.

Figure 17. Attenuator installation - parallel units

Note: Bottom bracket not shown. Bottom bracket to be installed in same orientation on bottom of unit.

Figure 18. Attenuator installation - series units

Note: Bottom bracket not shown. Bottom bracket to be installed in same orientation on bottom of unit.

22 VAV-SVX08E-EN

Figure 19. Attenuator installation - low-height parallel units

1. Attach attenuator to unit as shown with provided mounting brackets.

MOUNTING BRACKET

OPTIONAL ATTENUATOR

FIELD INSTALLED

1. Attach attenuator to unit as shown with provided mounting brackets.

MOUNTING BRACKET

OPTIONAL ATTENUATOR

FIELD INSTALLED

MOUNTING BRACKET

OPTIONAL ATTENUATOR

FIELD INSTALLED

MOUNTING BRACKET

OPTIONAL ATTENUATOR

FIELD INSTALLED

Notes: Bottom bracket not shown. Bottom bracket to be installed in same orientation on bottom of unit.

Figure 20. Attenuator installation - low-height series units

Unit Installation

Note: Bottom bracket not shown. Bottom bracket to be installed in same orientation on bottom of unit.

Bottom Access

An optional bottom access can be provided in the casing
of fan powered series or parallel terminal unit. See

Figure 21.

The 22 ga. door is lined with 1” 26 ga. dual wall insulation
and thermally lined with 1” – 1 lb. density fiberglass
insulation with a 3.85 R-value.

Each door includes 4 to 6 cam locs that are used to secure
the door to the casing.

The cam loc engages a metal encapsulated frame on the
unit that encloses the unit insulation to prevent air erosion.

The cam loc engagements are interlocked using a flat head
screwdriver. Once unlocked the entire door assembly can
be removed for access.

VAV-SVX08E-EN 23

Figure 21. Bottom access

Unit Installation

Table 1. Single-duct units

Unit
Size

4
5
6
8

10
12
14
16
24

VCCF

(lbs/kg)

22/10
27/12
32/15
35/16
52/24

16/7
16/7
16/7
16/7

Dual Wall

(lbs/kg)

19/9
19/9
19/9
20/9

27/12
34/15
41/19
46/21
63/29

Table 2. Dual-duct units

Unit Size VDDF (lbs/kg) VDDF w/Dual Wall (lbs/kg)

0505
0506
0606
0508

0608
0510
0808
0610

0810
1010
0612
0812

1012
1212
0814
1014

1214
1414
0816
1016

1216
1416
1616

VCCF w/

VCEF

(lbs/kg)

38/17
38/17
38/17
38/17

46/21
52/24
60/27
69/31
84/38

VCEF w/

Dual
Wall

(lbs/kg)

48/22
48/22
48/22
49/22

60/27
68/31
80/36
91/41

106/48

VCWF

1-Row

(lbs/kg)

21/10
21/10
21/10
21/10

29/13
37/17
44/20
49/22
70/32

VCWF

2-Row

(lbs/kg)

22/10
22/10
22/10
24/11

32/15
40/18
48/22
54/24
77/35

54/24
54/24
54/24
55/25

55/25
56/25
56/25
56/25

57/26
61/28
57/26
58/26

59/27
60/27
78/35
79/36

80/36
81/37
79/36
80/36

81/37
82/37
83/38

VCWF

3-Row

(lbs/kg)

23/11
23/11
22/10
24/11

32/15
41/19
51/23
56/25
76/35

VCWF

4-Row

(lbs/kg)

24/11
24/11
24/11
26/12

36/16
45/20
55/25
61/28
82/37

VCWF

1-Row w/

Dual Wall

(lbs/kg)

24/11
24/11
24/11
25/11

34/15
43/20
53/24
60/27
81/37

VCWF
2-Row w/
Dual Wall

(lbs/kg)

25/11
25/11
25/11
28/13

37/17
47/21
57/26
65/29
88/40

68/31
68/31
68/31
68/31

69/31
69/31
70/32
70/32

70/32
74/34
70/32
71/32

72/33

84/38
102/46
103/47

104/47
105/48
103/47
104/47

105/48
105/48
106/48

VCWF
3-Row w/
Dual Wall

(lbs/kg)

26/12
26/12
25/11
28/13

37/17
48/22
60/27
67/30
87/40

VCWF
4-Row w/
Dual Wall

(lbs/kg)

27/12
27/12
27/12
30/14

41/19
52/24
64/29
72/33
93/42

24 VAV-SVX08E-EN

Table 3. Parallel fan-powered units

Unit Installation

Unit
Size

0502SQ
0602SQ
0603SQ
0802SQ

0803SQ
0804SQ
1002SQ
1003SQ

1004SQ
1005SQ
1006SQ
1007SQ

1203SQ
1204SQ
1205SQ
1206SQ

1207SQ
1404SQ
1405SQ
1406SQ

1407SQ
1606SQ
1607SQ

VPCF

(lbs/kg)

81/37
80/36
83/38
81/37

83/38
84/38
82/37
84/38

85/39

98/44
114/52
122/55

85/39

86/39

99/45
115/52

123/56

87/39
100/45
116/53

124/56
117/53
125/57

VPCF w/Dual
Wall (lbs/kg)

115/52
114/52
117/53
115/52

117/53
118/54
116/53
118/54

119/54
132/60
148/67
156/71

119/54
120/54
133/60
149/68

157/71
121/55
134/61
150/68

158/72
151/68
159/72

VPEF

(lbs/kg)

110/550

109/49
112/51
110/50

112/51
113/51
111/50
113/51

114/52
128/58
144/65
152/69

114/52
115/52
129/59
145/66

153/69
116/53
130/59
146/66

154/70
147/67
155/70

VPEF w/Dual

Wall (lbs/kg)

144/65
143/65
146/66
144/65

146/66
147/67
145/66
147/67

148/67
162/73
178/81
186/84

148/67
149/68
163/74
179/81

187/85
150/68
164/74
180/82

188/85
181/82
189/86

VPWF 1-Row

(lbs/kg)

92/42
91/41

105/48

92/42

105/48
106/48

93/42

106/48
107/49

120/54
127/58
135/61

107/49
108/49
121/55
128/58

136/62
109/49
122/55
129/59

137/62
130/59
138/63

VPWF 2-Row

(lbs/kg)

95/43
94/43

108/49

95/43

108/49
109/49

96/44

109/49
110/50

123/56
130/59
138/63

110/50
111/50
124/56
131/59

139/63
112/51
125/57
132/60

140/64
133/60
141/64

VPWF 1-Row

w/Dual Wall

(lbs/kg)

126/57
125/57
139/63
126/57

139/63
140/64
127/58
140/64

141/64
154/70
161/73
169/77

141/64
142/64
155/70
162/73

170/77
143/65
156/71
163/74

171/78
164/74
172/78

VPWF 2-Row

w/Dual Wall

(lbs/kg)

129/59
128/58
142/64
129/59

142/64
143/65
130/59
143/65

144/65
157/71
164/74
172/78

144/65
145/66
158/72
165/75

173/78
146/66
159/72
166/75

174/79
167/76
175/79

VPxF

Attenuator

(lbs/kg)

46/21
46/21
48/22
46/21

48/22
48/22
46/21
48/22

48/22
48/22
54/24
54/24

48/22
48/22
48/22
54/24

54/24
48/22
48/22
54/24

54/24
54/24
54/24

Table 4. Series fan-powered

VSCF w/

Dual Wall

(lbs/kg)

93/42
93/42

92/42
100/45
111/50

94/43
101/46
112/51

96/44
104/47

115/52
116/53
133/60
146/66
106/48

116/53
118/54
134/61
147/67
117/53

120/54
135/61
148/67
136/62
149/68

Unit Size

0402SQ
0502SQ
0602SQ
0603SQ
0604SQ

0802SQ
0803SQ
0804SQ
1002SQ
1003SQ

1004SQ
1005SQ
1006SQ
1007SQ
1203SQ

1204SQ
1205SQ
1206SQ
1207SQ
1404SQ

1405SQ
1406SQ
1407SQ
1606SQ
1607SQ

VSCF

(lbs/kg)

78/35
78/35
77/35
76/34
87/39

79/36
77/35
88/40
81/37
80/36

91/41

92/42
104/47
117/53

82/37

92/42

94/43
105/48
118/54

93/42

96/44
106/48
119/54
107/49
120/54

VSEF

(lbs/kg)

104/47
104/47
103/47
105/48
116/53

105/48
106/48
117/53
107/49
109/49

120/54
121/55
135/61
148/67
111/50

121/55
123/56
136/62
149/68
122/55

125/57
137/62
150/68
138/63
151/68

VSEF w/

Dual Wall

(lbs/kg)

119/54
119/54
118/54
129/59
140/64

120/54
130/59
141/64
122/55
133/60

144/65
145/66
164/74
177/80
135/61

145/66
147/67
165/75
178/81
146/66

149/68
166/75
179/81
167/76
180/82

VSWF

1-Row

(lbs/kg)

85/39
85/39
84/38
88/40
99/45

86/39
89/40

100/45

88/40
92/42

103/47
104/47
119/54
132/60

94/43

104/47
106/48
120/54
133/60
105/48

108/49
121/55
134/61
122/55
135/61

VSWF

2-Row

(lbs/kg)

87/39
87/39
86/39
92/42

103/47

88/40
93/42

104/47

90/41
96/44

107/49
108/49
124/56
137/62

98/44

108/49
110/50
125/57
138/63
109/49

112/51
126/57
139/63
127/58
140/64

VSWF

1-Row

w/Dual Wall

(lbs/kg)

100/45
100/45

99/45
112/51
123/56

101/46
113/51
124/56
103/47
116/53

127/58
128/58
148/67
161/73
118/54

128/58
130/59
149/68
162/73
129/59

132/60
150/68
163/74
151/68
164/74

VSWF

2-Row

w/Dual Wall

(lbs/kg)

102/46
102/46
101/46
116/53
127/58

103/47
117/53
128/58
105/48
120/54

131/59
132/60
153/69
166/75
122/55

132/60
134/61
154/70
167/76
133/60

136/62
155/70
168/76
156/71
169/77

VSxF

Attenuator

(lbs/kg)

46/21
46/21
46/21
48/22
48/22

46/21
48/22
48/22
46/21
48/22

48/22
48/22
54/24
54/24
48/22

48/22
48/22
54/24
54/24
48/22

48/22
54/24
54/24
54/24
54/24

VAV-SVX08E-EN 25

Unit Installation

Table 5. Low-height parallel units

LPCF w/

Unit Size

0508SQ
0608SQ
0609SQ
0808SQ

0809SQ

0810SQ
14RT09SQ
14RT10SQ

LPCF

(lbs/kg)

69/31
68/31
73/33
69/31

74/34
90/41
83/38
97/44

Dual Wall

(lbs/kg)

89/40
88/40
93/42
89/40

94/43
110/50
103/47
117/53

Table 6. Low-height series units

LSCF w/

Dual Wall

(lbs/kg)

86/39
85/39
95/43
86/39

96/44

120/54
105/48
130/59

Unit Size

0508SQ
0608SQ
0609SQ
0808SQ

0809SQ

0810SQ
14RT09SQ
14RT10SQ

LSCF

(lbs/kg)

71/32
70/32
80/36
71/32

81/37
95/43
90/41

105/48

LPEF

(lbs/kg)

84/38
83/38
88/40
84/38

89/40

105/48

98/44

112/51

LSEF

(lbs/kg)

86/39
85/39
95/43
86/39

96/44
120/54
105/48
130/59

LPEF w/

Dual Wall

(lbs/kg)

104/47
103/47
108/49
104/47

109/49
125/57
118/54
132/60

LSEF w/

Dual Wall

(lbs/kg)

101/45
100/45
110/50
101/46

111/50
145/66
120/54
155/70

LPWF

1-Row

(lbs/kg)

78/35
77/35
82/37
78/35

83/38
99/45
92/42

106/48

LSWF

1-Row

(lbs/kg)

80/36
79/36
89/40
80/36

90/41

111/50

99/45

121/55

LPWF

2-Row

(lbs/kg)

81/37
80/36
85/39
81/37

86/39

102/46

95/43

109/49

LSWF

2-Row

(lbs/kg)

82/37
81/37
91/41
82/37

92/42
115/52
101/46
125/57

LPWF 1-Row
w/Dual Wall

(lbs/kg)

98/44
97/44

102/46

98/44

103/47
119/54
112/51
126/57

LSWF 1-Row
w/Dual Wall

(lbs/kg)

95/43
94/43

104/47

95/43

105/48
136/62
114/52
146/66

LPWF 2-Row

w/DualWall

(lbs/kg)

101/46
100/45
105/48
101/46

106/48
122/55
115/52
129/59

LSWF 2-Row
w/Dual Wall

(lbs/kg)

97/44
96/44

106/48

97/44

107/49
140/64
116/53
150/68

LPxF

Attenuator

(lbs/kg)

10/5
10/5
10/5
10/5

10/5
10/5
10/5
10/5

LSxF

Attenuator

(lbs/kg)

10/5
10/5
10/5
10/5

10/5
20/9
10/5
20/9

26 VAV-SVX08E-EN

Unit Setup

0.01

0.1

1

10

10 100 1,000 10,000

Airflow (CFM)

Flow Sensor Differential Pressure (inches water)

4

6

8"

5

10"

12" 14" 16"

8" x 12"

16" x 24"

Figure 22. Flow sensor P vs. airflow delivery

Fan Motor Amperage

Table 7. Maximum ECM fan motor amperage (FLA)

Fan Size HP VAC 115 VAC 277 VAV

Parallel/Series 03SQ 1/3 4.5 2.4
Parallel/Series 04SQ 1/2 6.5 3.5
Parallel/Series 05SQ 1 10.1 5.4
Parallel/Series 06SQ 19.55.1
Low-height Parallel/

Series 08SQ

Low-height Parallel/

Series 09SQ

Low-height Series 10SQ 2 x 1/2 7.5 4.0

1/2 2.0 1.1

1/2 6.7 3.6

VAV-SVX08E-EN 27

Unit Setup

Table 8. Maximum PSC fan motor amperage (FLA)

Fan Size HP VAC

Parallel/Series 02SQ 1/8 1.6 0.7 .7 -

Parallel/Series 03SQ 1/3 4.3 1.6 1.4 -

Parallel/Series 04SQ 1/3 5.5 2.0 1.8 -

Parallel/Series 05SQ 1/2 6.7 2.4 2.2 -

Parallel/Series 06SQ 1/2 - 3.8 3.3 4.6

Parallel/Series 07SQ 1 - 4.7 3.8 6.6

Low-height Parallel/

Series 08SQ

Low-height Parallel/

Series 09SQ

Series Low-height

10SQ

Parallel Low-Height

10SQ

2 x 1/8 11.0 5.0 3.5 -

2 x 1/8 9.4 3.5 3.0

115

VAC

1/3 5.5 2.5 1.8 -

1/3 5.5 2.5 1.8 -

277
VAV

347

VAC 208

(SCR) Motor Speed Control Adjustment Procedure.

In order to make units more convenient and efficient to
balance, an SCR (silicone control rectifier) is provided as
standard on all fan-powered units.

The SCR is located on the side of the fan control box. To
adjust the speed of the motor, the external knob must be
rotated either clockwise or counterclockwise depending
on the desired speed adjustment.

There is an internal potentiometer (Figure 23, p. 28)
setting on the SCR controller that can be accessed by
removing the control box cover. This internal
potentiometer is set at the factory to the specific motor
voltage.

It may be necessary to adjust this in the field depending on
the building’s power factor.

Figure 23. SCR (L) & internal potentiometer (R)

Electrically Commutated Motor (ECM)

Figure 24. ECM control board

Trane offers an energy efficient ECM motor as a motor
option. Balancing of an ECM motor is accomplished
through electronic control adjustments on the ECM
control board (see Figure 24, p. 28). Potentiometer
settings for a multitude of CFM settings are given in

Table 9, p. 29 thru Table 21, p. 41. Other potentiometer

settings can be determined either by interpolating from
these tables or by using the following equation:

CFMsetting = CFMmin + {(Potentiometer Setting) x
[(CFMmax - CFMmin)/100]}

There is an LED on the ECM control board, which will blink
one time for every 100 CFM of motor setting. For example,
the LED on a unit set for 790 CFM will blink 7 times. The
LED on a unit set for 800 CFM will blink 8 times.

Note: This feature only verifies that the CFM is set

properly. This feature does not indicate at what
speed the motor is actually running.

The ECM must be “load tested.” In other words, the fan
must be connected to properly test the ECM.

120 v

208 v–
277 v

347 v

DO NOT SET THIS
POTENTIOMETER
BELOW THE VOLTAGE
OF THE FAN MOTOR.

Max

Note: Do not set this potentiometer below the voltage of

the fan motor.

28 VAV-SVX08E-EN

Table 9. VPxF 03SQ ECM CFM

Motor Min CFM: 160
Motor Max CFM: 1085

CFM L/sec % Setting

160
170
179
188
198

207
216
226
235
244

254
263
272
282
291

300
310
319
328
338

347
356
366
375
385

394
403
413
422
431

441
450
459
469
478

487
497
506
515
525

534
543
553
562
571

581
590
599
609
618

627
637
646
655
665

76
80
84
89
93

98
102
107
111
115

120
124
129
133
137

142
146
151
155
159

164
168
173
177
181

186
190
195
199
204

208
212
217
221
226

230
234
239
243
248

252
256
261
265
270

274
278
283
287
292

296
300
305
309
314

10
11

12
13
14
15

16
17
18
19
20

21
22
23
24
25

26
27
28
29
30

31
32
33
34
35

36
37
38
39
40

41
42
43
44
45

46
47
48
49
50

51
52
53
54
55

Unit Setup

Table 9. VPxF 03SQ ECM CFM (continued)

Motor Min CFM: 160
Motor Max CFM: 1085

CFM L/sec % Setting

674

1
2
3
4
5

6
7
8
9

683
693
702
711

721
730
739
749
758

767
777
786
795
805

814
823
833
842
852

861
870
880
889
898

908
917
926
936
945

954
964
973
982
992

1001
1010
1020
1029
1038

1048
1057
1066
1076
1085

318
323
327
331
336

340
345
349
353
358

362
367
371
375
380

384
389
393
397
402

406
411
415
419
424

428
433
437
442
446

450
455
459
464
468

472
477
481
486
490

494
499
503
508
512

56
57
58
59
60

61
62
63
64
65

66
67
68
69
70

71
72
73
74
75

76
77
78
79
80

81
82
83
84
85

86
87
88
89
90

91
92
93
94
95

96
97
98
99

100

VAV-SVX08E-EN 29

Unit Setup

Table 10. VPxF 04SQ ECM CFM

Motor Min CFM: 220
Motor Max CFM: 1510

CFM L/sec % Setting

220
233
246
259
272

285
298
311
324
337

350
363
376
389
402

415
429
442
455
468

481
494
507
520
533

546
559
572
585
598

611
624
637
650
663

676
689
702
715
728

741
754
767
780
793

806
819
832
845
859

872
885
898
911
924

104
110
116
122
128

135
141
147
153
159

165
171
178
184
190

196
202
208
215
221

227
233
239
245
251

258
264
270
276
282

288
294
301
307
313

319
325
331
338
344

350
356
362
368
374

381
387
393
399
405

411
417
424
430
436

10
11

12
13
14
15

16
17
18
19
20

21
22
23
24
25

26
27
28
29
30

31
32
33
34
35

36
37
38
39
40

41
42
43
44
45

46
47
48
49
50

51
52
53
54
55

Table 10. VPxF 04SQ ECM CFM (continued)

Motor Min CFM: 220
Motor Max CFM: 1510

CFM L/sec % Setting

937

1
2
3
4
5

6
7
8
9

950
963
976
989

1002
1015
1028
1041
1054

1067
1080
1093
1106
1119

1132
1145
1158
1171
1184

1197
1210
1223
1236
1249

1262
1275
1288
1302
1315

1328
1341
1354
1367
1380

1393
1406
1419
1432
1445

1458
1471
1484
1497
1510

442
448
454
461
467

473
479
485
491
497

504
510
516
522
528

534
540
547
553
559

565
571
577
584
590

596
602
608
614
620

627
633
639
645
651

657
663
670
676
682

688
694
700
706
713

56
57
58
59
60

61
62
63
64
65

66
67
68
69
70

71
72
73
74
75

76
77
78
79
80

81
82
83
84
85

86
87
88
89
90

91
92
93
94
95

96
97
98
99

100

30 VAV-SVX08E-EN

Table 11. VPxF 05SQ ECM CFM

Motor Min CFM: 280
Motor Max CFM: 1850

CFM L/sec % Setting

280
296
312
327
343

359
375
391
407
423

438
454
470
486
502

518
534
549
565
581

597
613
629
645
661

676
692
708
724
740

756
772
787
803
819

835
851
867
883
898

914
930
946
962
978

994
1009
1025
1041
1057

1073
1089
1105
1120
1136

132
140
147
155
162

170
177
184
192
199

207
214
222
229
237

244
252
259
267
274

282
289
297
304
312

319
327
334
342
349

357
364
372
379
387

394
402
409
417
424

431
439
446
454
461

469
476
484
491
499

506
514
521
529
536

10
11

12
13
14
15

16
17
18
19
20

21
22
23
24
25

26
27
28
29
30

31
32
33
34
35

36
37
38
39
40

41
42
43
44
45

46
47
48
49
50

51
52
53
54
55

Unit Setup

Table 11. VPxF 05SQ ECM CFM (continued)

Motor Min CFM: 280
Motor Max CFM: 1850

CFM L/sec % Setting

1152

1
2
3
4
5

6
7
8
9

1168
1184
1200
1216

1231
1247
1263
1279
1295

1311
1327
1342
1358
1374

1390
1406
1422
1438
1454

1469
1485
1501
1517
1533

1549
1565
1580
1596
1612

1628
1644
1660
1676
1691

1707
1723
1739
1755
1771

1787
1802
1818
1834
1850

544
551
559
566
574

581
589
596
604
611

619
626
634
641
649

656
664
671
678
686

693
701
708
716
723

731
738
746
753
761

768
776
783
791
798

806
813
821
828
836

843
851
858
866
873

56
57
58
59
60

61
62
63
64
65

66
67
68
69
70

71
72
73
74
75

76
77
78
79
80

81
82
83
84
85

86
87
88
89
90

91
92
93
94
95

96
97
98
99

100

VAV-SVX08E-EN 31

Unit Setup

Table 12. VPxF 06SQ ECM CFM

Motor Min CFM: 530
Motor Max CFM: 2100

CFM L/sec % Setting

530

546

562

577

593

609

625

641

657

673

688

704

720

736

752

768

784

799

815

831

847

863

879

895

911

926

942

958

974

990
1006

1022
1037
1053
1069

1085
1101
1117
1133
1148

1164
1180
1196
1212
1228

1244
1259
1275
1291
1307

1323
1339
1355
1370
1386

250
258
265
273
280

287
295
302
310
317

325
332
340
347
355

362
370
377
385
392

400
407
415
422
430

437
445
452
460
467

475
482
490
497
505

512
520
527
535
542

549
557
564
572
579

587
594
602
609
617

624
632
639
647
654

10
11

12
13
14
15

16
17
18
19
20

21
22
23
24
25

26
27
28
29
30

31
32
33
34
35

36
37
38
39
40

41
42
43
44
45

46
47
48
49
50

51
52
53
54
55

Table 12. VPxF 06SQ ECM CFM (continued)

Motor Min CFM: 530
Motor Max CFM: 2100

CFM L/sec % Setting

1402

1
2
3
4
5

6
7
8
9

1418
1434
1450
1466

1481
1497
1513
1529
1545

1561
1577
1592
1608
1624

1640
1656
1672
1688
1704

1719
1735
1751
1767
1783

1799
1815
1830
1846
1862

1878
1894
1910
1926
1941

1957
1973
1989
2005
2021

2037
2052
2068
2084
2100

662
669
677
684
692

699
707
714
722
729

737
744
752
759
767

774
782
789
796
804

811
819
826
834
841

849
856
864
871
879

886
894
901
909
916

924
931
939
946
954

961
969
976
984
991

56
57
58
59
60

61
62
63
64
65

66
67
68
69
70

71
72
73
74
75

76
77
78
79
80

81
82
83
84
85

86
87
88
89
90

91
92
93
94
95

96
97
98
99

100

32 VAV-SVX08E-EN

Table 13. VSxF 03SQ ECM CFM

Motor Min CFM: 200
Motor Max CFM: 1100

CFM L/sec % Setting

200

209

218

227

236

246

255

264

273

282

291

300

309

318

327

336

346

355

364

373

382

391

400

409

418

427

436

446

455

464

473

482

491

500

509

518

527

536

546

555

564

573

582

591

600

609

618

627

636

646

655

664

673

682

691

94

99
103
107
112

116
120
124
129
133

137
142
146
150
154

159
163
167
172
176

180
185
189
193
197

202
206
210
215
219

223
227
232
236
240

245
249
253
257
262

266
270
275
279
283

287
292
296
300
305

309
313
318
322
326

10
11

12
13
14
15

16
17
18
19
20

21
22
23
24
25

26
27
28
29
30

31
32
33
34
35

36
37
38
39
40

41
42
43
44
45

46
47
48
49
50

51
52
53
54
55

Unit Setup

Table 13. VSxF 03SQ ECM CFM (continued)

Motor Min CFM: 200
Motor Max CFM: 1100

CFM L/sec % Setting

700

1
2
3
4
5

6
7
8
9

709
718
727
736

745
755
764
773
782

791
800
809
818
827

836
845
855
864
873

882
891
900
909
918

927
936
945
955
964

973
982

991
1000
1009

1018
1027
1036
1045
1055

1064
1073
1082
1091
1100

330
335
339
343
348

352
356
360
365
369

373
378
382
386
390

395
399
403
408
412

416
420
425
429
433

438
442
446
451
455

459
463
468
472
476

481
485
489
493
498

502
506
511
515
519

56
57
58
59
60

61
62
63
64
65

66
67
68
69
70

71
72
73
74
75

76
77
78
79
80

81
82
83
84
85

86
87
88
89
90

91
92
93
94
95

96
97
98
99

100

VAV-SVX08E-EN 33

Unit Setup

Table 14. VSxF 04SQ ECM CFM

Motor Min CFM: 275
Motor Max CFM: 1500

CFM L/sec % Setting

275
288
300
312
325

337
350
362
374
387

399
411
424
436
449

461
473
486
498
510

523
535
548
560
572

585
597
609
622
634

646
659
671
684
696

708
721
733
745
758

770
783
795
807
820

832
844
857
869
882

894
906
919
931
943

130
136
142
147
153

159
165
171
177
183

188
194
200
206
212

218
223
229
235
241

247
253
258
264
270

276
282
288
293
299

305
311
317
323
328

334
340
346
352
358

363
369
375
381
387

393
399
404
410
416

422
428
434
439
445

10
11

12
13
14
15

16
17
18
19
20

21
22
23
24
25

26
27
28
29
30

31
32
33
34
35

36
37
38
39
40

41
42
43
44
45

46
47
48
49
50

51
52
53
54
55

Table 14. VSxF 04SQ ECM CFM (continued)

Motor Min CFM: 275
Motor Max CFM: 1500

CFM L/sec % Setting

956

1
2
3
4
5

6
7
8
9

968

980

993
1005

1018
1030
1042
1055
1067

1079
1092
1104
1117
1129

1141
1154
1166
1178
1191

1203
1215
1228
1240
1253

1265
1277
1290
1302
1314

1327
1339
1352
1364
1376

1389
1401
1413
1426
1438

1451
1463
1475
1488
1500

451
457
463
469
474

480
486
492
498
504

509
515
521
527
533

539
544
550
556
562

568
574
579
585
591

597
603
609
615
620

626
632
638
644
650

655
661
667
673
679

685
690
696
702
708

56
57
58
59
60

61
62
63
64
65

66
67
68
69
70

71
72
73
74
75

76
77
78
79
80

81
82
83
84
85

86
87
88
89
90

91
92
93
94
95

96
97
98
99

100

34 VAV-SVX08E-EN

Table 15. VSxF 05SQ ECM CFM

Motor Min CFM: 350
Motor Max CFM: 2050

CFM L/sec % Setting

350
367
385
402
419

436
453
470
488
505

522
539
556
573
591

608
625
642
659
676

694
711
728
745
762

779
797
814
831
848

865
882
900
917
934

951
968

985
1003
1020

1037
1054
1071
1088
1106

1123
1140
1157
1174
1192

1209
1226
1243
1260
1277

165
173
181
190
198

206
214
222
230
238

246
254
263
271
279

287
295
303
311
319

327
335
344
352
360

368
376
384
392
400

408
416
425
433
441

449
457
465
473
481

489
498
506
514
522

530
538
546
554
562

570
579
587
595
603

10
11

12
13
14
15

16
17
18
19
20

21
22
23
24
25

26
27
28
29
30

31
32
33
34
35

36
37
38
39
40

41
42
43
44
45

46
47
48
49
50

51
52
53
54
55

Unit Setup

Table 15. VSxF 05SQ ECM CFM (continued)

Motor Min CFM: 350
Motor Max CFM: 2050

CFM L/sec % Setting

1295

1
2
3
4
5

6
7
8
9

1312
1329
1346
1363

1380
1398
1415
1432
1449

1466
1483
1501
1518
1535

1552
1569
1586
1604
1621

1638
1655
1672
1689
1707

1724
1741
1758
1775
1792

1810
1827
1844
1861
1878

1895
1913
1930
1947
1964

1981
1998
2016
2033
2050

611
619
627
635
643

651
660
668
676
684

692
700
708
716
724

732
741
749
757
765

773
781
789
797
805

814
822
830
838
846

854
862
870
878
886

895
903
911
919
927

935
943
951
959
967

56
57
58
59
60

61
62
63
64
65

66
67
68
69
70

71
72
73
74
75

76
77
78
79
80

81
82
83
84
85

86
87
88
89
90

91
92
93
94
95

96
97
98
99

100

VAV-SVX08E-EN 35

Unit Setup

Table 16. VSxF 06SQ ECM CFM

Motor Min CFM: 700
Motor Max CFM: 2500

CFM L/sec % Setting

700

718

737

755

773

791

809

827

846

864

882

900

918

937

955

973

991
1009
1027
1046

1064
1082
1100
1118
1137

1155
1173
1191
1209
1227

1246
1264
1282
1300
1318

1336
1355
1373
1391
1409

1427
1446
1464
1482
1500

1518
1536
1555
1573
1591

1609
1627
1646
1664
1682

330
339
348
356
365

373
382
391
399
408

416
425
433
442
451

459
468
476
485
493

502
511
519
528
536

545
554
562
571
579

588
596
605
614
622

631
639
648
656
665

674
682
691
699
708

717
725
734
742
751

759
768
777
785
794

10
11

12
13
14
15

16
17
18
19
20

21
22
23
24
25

26
27
28
29
30

31
32
33
34
35

36
37
38
39
40

41
42
43
44
45

46
47
48
49
50

51
52
53
54
55

Table 16. VSxF 06SQ ECM CFM (continued)

Motor Min CFM: 700
Motor Max CFM: 2500

CFM L/sec % Setting

1700

1
2
3
4
5

6
7
8
9

1718
1736
1755
1773

1791
1809
1827
1846
1864

1882
1900
1918
1936
1955

1973
1991
2009
2027
2046

2064
2082
2100
2118
2136

2155
2173
2191
2209
2227

2245
2264
2282
2300
2318

2336
2355
2373
2391
2409

2427
2445
2464
2482
2500

802
811
820
828
837

845
854
862
871
880

888
897
905
914
922

931
940
948
957
965

974
983

991
1000
1008

1017
1025
1034
1043
1051

1060
1068
1077
1085
1094

1103
1111
1120
1128
1137

1146
1154
1163
1171
1180

56
57
58
59
60

61
62
63
64
65

66
67
68
69
70

71
72
73
74
75

76
77
78
79
80

81
82
83
84
85

86
87
88
89
90

91
92
93
94
95

96
97
98
99

100

36 VAV-SVX08E-EN

Table 17. LPxF 08SQ ECM CFM

Motor Min CFM: 100
Motor Max CFM: 460

CFM L/sec % Setting

100
103
107
111
114

118
121
125
129
132

136
140
143
147
151

154
158
162
165
169

172
176
180
183
187

191
194
198
202
205

209
212
216
220
223

227
231
234
238
242

245
249
253
256
260

263
267
271
274
278

282
285
289
293
296

47
49
50
52
54

56
57
59
61
62

64
66
68
69
71

73
75
76
78
80

81
83
85
87
88

90
92
93
95
97

99
100
102
104
105

107
109
111
112
114

116
117
119
121
123

124
126
128
129
131

133
135
136
138
140

10
11

12
13
14
15

16
17
18
19
20

21
22
23
24
25

26
27
28
29
30

31
32
33
34
35

36
37
38
39
40

41
42
43
44
45

46
47
48
49
50

51
52
53
54
55

Unit Setup

Table 17. LPxF 08SQ ECM CFM (continued)

Motor Min CFM: 100
Motor Max CFM: 460

CFM L/sec % Setting

300

1
2
3
4
5

6
7
8
9

303
307
311
314

318
322
325
329
333

336
340
344
347
351

354
358
362
365
369

373
376
380
384
387

391
394
398
402
405

409
413
416
420
424

427
431
435
438
442

445
449
453
456
460

142
143
145
147
148

150
152
154
155
157

159
160
162
164
166

167
169
171
172
174

176
178
179
181
183

184
186
188
190
191

193
195
196
198
200

202
203
205
207
209

210
212
214
215
217

56
57
58
59
60

61
62
63
64
65

66
67
68
69
70

71
72
73
74
75

76
77
78
79
80

81
82
83
84
85

86
87
88
89
90

91
92
93
94
95

96
97
98
99

100

VAV-SVX08E-EN 37

Unit Setup

Table 18. LPxF 09SQ ECM CFM

Motor Min CFM: 250
Motor Max CFM: 1025

CFM L/sec % Setting

250
258
265
273
281

289
297
305
312
320

328
336
344
352
359

367
375
383
391
399

406
414
422
430
438

446
453
461
469
477

485
493
500
508
516

524
532
540
547
555

563
571
579
587
594

602
610
618
626
634

641
649
657
665
673

118
122
125
129
133

136
140
144
147
151

155
159
162
166
170

173
177
181
184
188

192
196
199
203
207

210
214
218
221
225

229
232
236
240
244

247
251
255
258
262

266
269
273
277
281

284
288
292
295
299

303
306
310
314
317

10
11

12
13
14
15

16
17
18
19
20

21
22
23
24
25

26
27
28
29
30

31
32
33
34
35

36
37
38
39
40

41
42
43
44
45

46
47
48
49
50

51
52
53
54
55

Table 18. LPxF 09SQ ECM CFM (continued)

Motor Min CFM: 250
Motor Max CFM: 1025

CFM L/sec % Setting

680

1
2
3
4
5

6
7
8
9

688
696
704
712

720
727
735
743
751

759
767
774
782
790

798
806
814
821
829

837
845
853
861
868

876
884
892
900
908

915
923
931
939
947

955
962
970
978
986

994
1002
1009
1017
1025

321
325
329
332
336

340
343
347
351
354

358
362
365
369
373

377
380
384
388
391

395
399
402
406
410

414
417
421
425
428

432
436
439
443
447

450
454
458
462
465

469
473
476
480
484

56
57
58
59
60

61
62
63
64
65

66
67
68
69
70

71
72
73
74
75

76
77
78
79
80

81
82
83
84
85

86
87
88
89
90

91
92
93
94
95

96
97
98
99

100

38 VAV-SVX08E-EN

Table 19. LSxF 08SQ ECM CFM

Motor Min CFM: 100
Motor Max CFM: 460

CFM L/sec % Setting

100
103
107
111
114

118
121
125
129
132

136
140
143
147
151

154
158
162
165
169

172
176
180
183
187

191
194
198
202
205

209
212
216
220
223

227
231
234
238
242

245
249
253
256
260

263
267
271
274
278

282
285
289
293
296

47
49
50
52
54

56
57
59
61
62

64
66
68
69
71

73
75
76
78
80

81
83
85
87
88

90
92
93
95
97

99
100
102
104
105

107
109
111
112
114

116
117
119
121
123

124
126
128
129
131

133
135
136
138
140

10
11

12
13
14
15

16
17
18
19
20

21
22
23
24
25

26
27
28
29
30

31
32
33
34
35

36
37
38
39
40

41
42
43
44
45

46
47
48
49
50

51
52
53
54
55

Unit Setup

Table 19. LSxF 08SQ ECM CFM (continued)

Motor Min CFM: 100
Motor Max CFM: 460

CFM L/sec % Setting

300

1
2
3
4
5

6
7
8
9

303
307
311
314

318
322
325
329
333

336
340
344
347
351

354
358
362
365
369

373
376
380
384
387

391
394
398
402
405

409
413
416
420
424

427
431
435
438
442

445
449
453
456
460

142
143
145
147
148

150
152
154
155
157

159
160
162
164
166

167
169
171
172
174

176
178
179
181
183

184
186
188
190
191

193
195
196
198
200

202
203
205
207
209

210
212
214
215
217

56
57
58
59
60

61
62
63
64
65

66
67
68
69
70

71
72
73
74
75

76
77
78
79
80

81
82
83
84
85

86
87
88
89
90

91
92
93
94
95

96
97
98
99

100

VAV-SVX08E-EN 39

Unit Setup

Table 20. LSxF 09SQ ECM CFM

Motor Min CFM: 240
Motor Max CFM: 950

CFM L/sec % Setting

240
247
255
262
269

276
283
290
298
305

312
319
326
333
341

348
355
362
369
376

384
391
398
405
412

419
427
434
441
448

455
462
470
477
484

491
498
505
513
520

527
534
541
548
556

563
570
577
584
592

599
606
613
620
627

113
117
120
123
127

130
134
137
140
144

147
151
154
157
161

164
167
171
174
178

181
184
188
191
195

198
201
205
208
211

215
218
222
225
228

232
235
239
242
245

249
252
255
259
262

266
269
272
276
279

283
286
289
293
296

10
11

12
13
14
15

16
17
18
19
20

21
22
23
24
25

26
27
28
29
30

31
32
33
34
35

36
37
38
39
40

41
42
43
44
45

46
47
48
49
50

51
52
53
54
55

Table 20. LSxF 09SQ ECM CFM (continued)

Motor Min CFM: 240
Motor Max CFM: 950

CFM L/sec % Setting

635

1
2
3
4
5

6
7
8
9

642
649
656
663

670
678
685
692
699

706
713
721
728
735

742
749
756
764
771

778
785
792
799
807

814
821
828
835
842

850
857
864
871
878

885
893
900
907
914

921
928
936
943
950

299
303
306
310
313

316
320
323
327
330

333
337
340
343
347

350
354
357
360
364

367
371
374
377
381

384
387
391
394
398

401
404
408
411
415

418
421
425
428
431

435
438
442
445
448

56
57
58
59
60

61
62
63
64
65

66
67
68
69
70

71
72
73
74
75

76
77
78
79
80

81
82
83
84
85

86
87
88
89
90

91
92
93
94
95

96
97
98
99

100

40 VAV-SVX08E-EN

Table 21. LSxF 10SQ ECM CFM

Motor Min CFM: 400
Motor Max CFM: 1800

CFM L/sec % Setting

400
414
428
443
457

471
485
499
513
527

542
556
570
584
598

612
626
641
655
669

683
697
711
725
740

754
768
782
796
810

824
838
853
867
881

895
909
923
937
952

966
980

994
1008
1022

1036
1051
1065
1079
1093

1107
1121
1135
1150
1164

189
196
202
209
216

222
229
236
242
249

256
262
269
276
282

289
296
302
309
316

322
329
336
342
349

356
362
369
376
382

389
396
402
409
416

422
429
436
442
449

456
462
469
476
482

489
496
502
509
516

523
529
536
543
549

10
11

12
13
14
15

16
17
18
19
20

21
22
23
24
25

26
27
28
29
30

31
32
33
34
35

36
37
38
39
40

41
42
43
44
45

46
47
48
49
50

51
52
53
54
55

Unit Setup

Table 21. LSxF 10SQ ECM CFM (continued)

Motor Min CFM: 400
Motor Max CFM: 1800

CFM L/sec % Setting

1178

1
2
3
4
5

6
7
8
9

1192
1206
1220
1234

1249
1263
1277
1291
1305

1319
1333
1348
1362
1376

1390
1404
1418
1432
1447

1461
1475
1489
1503
1517

1531
1545
1560
1574
1588

1602
1616
1630
1644
1659

1673
1687
1701
1715
1729

1743
1758
1772
1786
1800

556
563
569
576
583

589
596
603
609
616

623
629
636
643
649

656
663
669
676
683

689
696
703
709
716

723
729
736
743
749

756
763
769
776
783

789
796
803
809
816

823
829
836
843
850

56
57
58
59
60

61
62
63
64
65

66
67
68
69
70

71
72
73
74
75

76
77
78
79
80

81
82
83
84
85

86
87
88
89
90

91
92
93
94
95

96
97
98
99

100

VAV-SVX08E-EN 41

Wiring Diagrams

Note: See programming guides listed below for detailed wiring information on the following:

UCM 4.2: VAV-SVX01*-EN UC400: VAV-SVX07*-EN VV550: VAV-SVP01*-EN

Heaters with Contactors

Figure 25. Single-duct units (typical of single phase voltages - 1 leg)

42 VAV-SVX08E-EN

Figure 26. Single-duct units (typical of single phase voltages - 2 leg)

Wiring Diagrams

VAV-SVX08E-EN 43

Wiring Diagrams

Figure 27. Single-duct units (typical of three phase voltages)

44 VAV-SVX08E-EN

Figure 28. Fan-powered units (electronic or DDC/UCM)

Wiring Diagrams

VAV-SVX08E-EN 45

Wiring Diagrams

Figure 29. Fan-powered units (pneumatic controls)

46 VAV-SVX08E-EN

Figure 30. Fan-powered control boxes

FOR SERIES FAN POWERED TERMINAL UNITS ONLY.

EXTERNAL TO CONTROL BOX.

OPTIONAL OR ALTERNATE CIRCUITRY

DISCONNECT SWITCH, FUSE, & SCR ARE LOCATED

DETERMINED BY MOTOR VOLTAGE ON ORDER.

FUSE IS OPTIONAL.

VOLTAGE FOUND ON UNIT NAMEPLATE.

6.

5.

4.

CAPACITOR IS INSTALLED ON FAN HOUSING.

FACTORY INSTALLED
BY OTHERS

3.

2.

NOTES:

1.

NO

P.E. SWITCH-2

CC

P.E. SWITCH-1

BK

NC

BK

NC

BK

NO

NO

NC

C

6.

6.

6.

2.

2.

2.

5.

5.

5.

3.

3.

3.

4.

4.

4.

}

BK

24V

1

3

2

4

R

MOTOR

RELAY

BR

TRANSFORMER

FUSE

BK

BK

W

GROUND

SCREW

GREEN

DISCONNECT

SWITCH

BK

W

L1

N

24V

BK

BL

Y

CONTROLLER

CAPACITOR

BR

BR

FAN

MOTOR

BLOCK

TERMINAL

W

BK

BR
R

BK

CONTROL

SPEED

MOTOR

W

W

W-COM

BK

LINE VOLTAGE

OR FROM HEATER TERMINAL

TO VAV

Fan-powered Control Box
with Electronic or DDC Controls

CAPACITOR

MOTOR

FAN

SWITCH

DISCONNECT

OR FROM HEATER TERMINAL

LINE VOLTAGE

Fan-powered Control Box
with Pneumatic Controls
Duct Pressure Switch Option

BR

BR

TERMINAL

W-COM

BK

W

BK

BLOCK

R

24V

1

3

TRANSFORMER

MOTOR

BK

BR

RELAY

24V

BK

2

4

GREEN

GROUND

SCREW

CONTROL

SPEED

MOTOR

W

W

FUSE

BK

BK

BK

W

W

BK

L1

N

DUCT PRESSURE

SWITCH

CAPACITOR

MOTOR

FAN

Fan-powered Control Box
with Pneumatic Controls

BR

BR

P.E. SWITCH

TERMINAL

W-COM

W

BK

BLOCK

BK

CONTROL

SPEED

MOTOR

W

W

LINE VOLTAGE

SWITCH

DISCONNECT

OR FROM HEATER TERMINAL

GREEN

GROUND

SCREW

FUSE

BK

BK

BK

BK

W

W

L1

N

BK

C

NO

NC

DUCT PRESSURE MAIN CONTROL

FAN CONTROL BOX FAN CONTROL BOX

FAN CONTROL BOX

CAPACITORS BEFORE SERVICING.

DISCHARGE MOTOR START/RUN

FAILURE TO DISCONNECT POWER
BEFORE SERVICING CAN CAUSE
SEVERE PERSONAL INJURY OR DEATH.

UNIT TERMINALS ARE NOT DESIGNED
TO ACCEPT OTHER TYPES OF

FAILURE TO DO SO MAY CAUSE
DAMAGE TO THE EQUIPMENT.

USE COPPER CONDUCTORS ONLY!

CONDUCTORS.

SERVICING.

REMOTE DISCONNECTS BEFORE

HAZARDOUS VOLTAGE!

DISCONNECT, LOCK OUT AND TAG
ALL ELECTRIC POWER INCLUDING

WARNINGWARNING

CAUTIONCAUTION

}

}

}

Wiring Diagrams

VAV-SVX08E-EN 47

Wiring Diagrams

FOR SERIES FAN POWERED TERMINAL UNITS ONLY.

EXTERNAL TO CONTROL BOX.

OPTIONAL OR ALTERNATE CIRCUITRY

DISCONNECT SWITCH, FUSE, & SCR ARE LOCATED

DETERMINED BY MOTOR VOLTAGE ON ORDER.

FUSE IS OPTIONAL.

VOLTAGE FOUND ON UNIT NAMEPLATE.

5.

4.

3.

FACTORY INSTALLED
BY OTHERS

2.

NOTES:

1.

NO

P.E. SWITCH-2

CC

P.E. SWITCH-1

BK

NC

BK

NC

BK

NO

5.

3.

4.

4.

4.

RED

NEUT.

W

BK

G

R

RED

24V

BL

Y

R

BK

NEUT.

RED

G

W

RED

24V

BL

Y

1

24V

3

2

4

RED RED

G

W

BK

R

24VNEUT.

BK

BOARD

ECM

ECM

BOARD

MOTOR
RELAY

ECM

BOARD

}

Fan-powered Control Box w/ ECM with Electronic or DDC Controls

(Depending on the size of the unit, the ECM board may or may not be located
in the fan control box.)

OR FROM HEATER TERMINAL

LINE VOLTAGE

Fan-powered Control Box with Pneumatic Controls

LINE VOLTAGE

OR FROM HEATER TERMINAL

DUCT PRESSURE MAIN CONTROL

CORRECTION

PRESSURE

SWITCH

DUCT

C

NC

TRANSFORMER

BK

24V

Y

BL

CHOKE

BL

NO

BL

DISCONNECT

BK

SWITCH

3.

FUSE

FACTO R

POWER

W

BK

W

SCREW

2.

GROUND

GREEN

GR

TERMINAL

BK

BLOCK

MOTOR

FAN

Fan-powered Control Box w/ ECM with Pneumatic Controls

Duct Pressure Switch Option

P.E. SWITCH

DISCONNECT
SWITCH

C

FUSE

NC

CORRECTION CHOKE

TRANSFORMER

NO

BK

BL

Y

24V

BK

POWER FACTOR

BLOCK

2.

W

BK

W

FAN

MOTOR

TERMINAL

GR

GREEN
GROUND
SCREW

BK

5.

CORRECTION CHOKE

POWER FACTOR

FAN CONTROL BOX

TRANSFORMER

BK

W

DISCONNECT

FUSE

3.

W

2.

SWITCH

3.

24V

BL

Y

BLOCK

TERMINAL

OR FROM HEATER TERMINAL

GR

L1

GROUND
SCREW

GREEN

N

LINE VOLTAGE

BK

W

MOTOR

FAN

CONTROLLER

TO VAV

Y

BK

FAN CONTROL BOX

FAN CONTROL BOX

CAPACITORS BEFORE SERVICING.

DISCHARGE MOTOR START/RUN

FAILURE TO DISCONNECT POWER
BEFORE SERVICING CAN CAUSE
SEVERE PERSONAL INJURY OR DEATH.

UNIT TERMINALS ARE NOT DESIGNED
TO ACCEPT OTHER TYPES OF

FAILURE TO DO SO MAY CAUSE
DAMAGE TO THE EQUIPMENT.

USE COPPER CONDUCTORS ONLY!

CONDUCTORS.

SERVICING.

REMOTE DISCONNECTS BEFORE

HAZARDOUS VOLTAGE!

DISCONNECT, LOCK OUT AND TAG
ALL ELECTRIC POWER INCLUDING

CAUTION

CAUTION

WARNING

WARNING

}

}

}

Figure 31. Fan-powered units with ECM

48 VAV-SVX08E-EN

Figure 32. Fan-powered low-height units

CAUTION

WARNING

Wiring Diagrams

Fan-Powered Low-Height Control Box with Electronic or DDC Controls

LINE VOLTAGE

OR FROM HEATER TERMINAL

BK

4.

BK

FUSE

BK

5.

}

L1

N

GREEN

GROUND

SCREW

DISCONNECT

W

SWITCH

2.

W

2

1

BK

MOTOR

4

RELAY

BR

24V

3

R

WARNING

HAZARDOUS VOLTAGE!

DISCONNECT, LOCK OUT AND TAG
ALL ELECTRIC POWER INCLUDING
REMOTE DISCONNECTS BEFORE
SERVICING.

DISCHARGE MOTOR START/RUN
CAPACITORS BEFORE SERVICING.

FAILURE TO DISCONNECT POWER
BEFORE SERVICING CAN CAUSE
SEVERE PERSONAL INJURY OR DEATH.

CAUTION

USE COPPER CONDUCTORS ONLY!

UNIT TERMINALS ARE NOT DESIGNED
TO ACCEPT OTHER TYPES OF
CONDUCTORS.

FAILURE TO DO SO MAY CAUSE
DAMAGE TO THE EQUIPMENT.

CAPACITOR

BR

MOTOR

SPEED

CONTROL

TERMINAL

BLOCK

3.

2.

BR

BR

W or BR

FAN

MOTOR

W

W

W

W

BK

TRANSFORMER

CAPACITOR

BR

BK

W

24V

FAN CONTROL BOX

Y

BL

3.

BR

BR

R

MOTOR 2

(SIZE 10 ONLY)

W

DUCT PRESSURE MAIN CONTROL

6.

BK

NC

P.E. SWITCH-2

NO

CC

NO

BK

NC

P.E. SWITCH-1

BK

NOTES:

1.

2.

DISCONNECT SWITCH, FUSE, & SCR ARE LOCATED
EXTERNAL TO CONTROL BOX.

3.

CAPACITOR IS INSTALLED ON FAN HOUSING.

4.

FUSE IS OPTIONAL.

5.

DETERMINED BY MOTOR VOLTAGE ON ORDER.
VOLTAGE FOUND ON UNIT NAMEPLATE.

6.

FOR SERIES FAN POWERED TERMINAL UNITS ONLY.

FACTORY INSTALLED
BY OTHERS
OPTIONAL OR ALTERNATE CIRCUITRY

FAN

}

BK

TO VAV

CONTROLLER

Fan-Powered Low-Height Control Box with Pneumatic Controls

Duct Pressure Switch Option

BL

6.

C

DUCT

PRESSURE

SWITCH

NO

NC

LINE VOLTAGE

OR FROM HEATER TERMINAL

L1

N

BK

W

DISCONNECT

W

BK

4.

FUSE

BK

5.

GROUND

SWITCH

TRANSFORMER

GREEN

SCREW

BK

BL

24V

CAPACITOR

MOTOR

SPEED

CONTROL

2.

TERMINAL

BLOCK

2

Y

1

MOTOR

RELAY

Fan-Powered Low-Height Control Box with Pneumatic Controls

LINE VOLTAGE

OR FROM HEATER TERMINAL

FUSE

4.

BK

L1

BK

BK

C

P.E. SWITCH

NO

N

W

NC

}

W

DISCONNECT

5.

GREEN

GROUND

SCREW

SWITCH

BK

BK

2.

BR

MOTOR
SPEED

CONTROL

2.

TERMINAL

BLOCK

3.

BR

CAPACITOR

WW

BR

24V

W

BR

2.

BR

MOTOR

W

W

3.

BR

WW

BK

4

BL

3

FAN

BK

FAN CONTROL BOX

FAN

MOTOR

W

BK

W

W

BK

FAN CONTROL BOX

CAPACITOR

CAPACITOR

3.

BR

3.

BR

MOTOR 2

(SIZE 10 ONLY)

BR

FAN

MOTOR 2

(SIZE 10 ONLY)

W

BK

FAN

W

BK

VAV-SVX08E-EN 49

Wiring Diagrams

FOR SERIES FAN POWERED TERMINAL UNITS ONLY.

EXTERNAL TO CONTROL BOX.

OPTIONAL OR ALTERNATE CIRCUITRY

DISCONNECT SWITCH, FUSE, & SCR ARE LOCATED

DETERMINED BY MOTOR VOLTAGE ON ORDER.

FUSE IS OPTIONAL.

VOLTAGE FOUND ON UNIT NAMEPLATE.

5.

4.

3.

FACTORY INSTALLED
BY OTHERS

2.

NOTES:

1.

NO

P.E. SWITCH-2

CC

P.E. SWITCH-1

BK

NC

BK

NC

BK

NO

5.

W

G

BK

R

NEUT.

RED

24V

RED

BL

NEUT.

RED

24V

RED

R

BK

W

G

BL

BL

4

W

G

R

BK

NEUT.

RED

BK

24V

RED

24V

3

1

2

BOARD

ECM

BOARD

ECM

MOTOR
RELAY

BOARD

ECM

OR FROM HEATER TERMINAL

LINE VOLTAGE

Fan-Powered Low-Height Control Box w/ ECM with Pneumatic Controls

DUCT PRESSURE MAIN CONTROL

Fan-Powered Low-Height Control Box w/ ECM with Pneumatic Controls

Duct Pressure Switch Option

(SIZE 10 ONLY)

DISCONNECT
SWITCH

FUSE

3.

TRANSFORMER

BK

BLOCK

TERMINAL

W

2.

24V

BL

Y

BK

W

FAN

MOTOR

GR

GREEN
GROUND
SCREW

4.

W

BK

BK

W

MOTOR 2

FAN

TO VAV

OR FROM HEATER TERMINAL

LINE VOLTAGE

MOTOR

BL

DUCT

SWITCH

PRESSURE

TRANSFORMER

BL

BK

24V

Y

BL

C

NC

NO

FUSE

3.

BK

BK

DISCONNECT
SWITCH

2.

W

W

SCREW

GROUND

GREEN

GR

W

BK

4.

Y

BK

TERMINAL

BLOCK

W

FAN FAN

(SIZE 10 ONLY)

MOTOR 2

CONTROLLER

NO

P.E. SWITCH

C

NC

DISCONNECT
SWITCH

FUSE

3.

BK

W

TRANSFORMER

BK

24V

BL

Y

BLOCK

TERMINAL

2.

W

GROUND
SCREW

GREEN

BK

W

GR

4.
FAN

MOTOR

Y

W

BK

(SIZE 10 ONLY)

MOTOR 2

FAN

LINE VOLTAGE

OR FROM HEATER TERMINAL

5.

Fan-Powered Low-Height Control Box w/ ECM with Electronic or DDC Controls

(Depending on the size of the unit, the ECM board may or may not be located
in the fan control box.)

Y

CAUTION

CAUTION

WARNING

WARNING

}

}

FAN CONTROL BOX

FAN CONTROL BOX

FAN CONTROL BOX

CAPACITORS BEFORE SERVICING.

DISCHARGE MOTOR START/RUN

FAILURE TO DISCONNECT POWER
BEFORE SERVICING CAN CAUSE
SEVERE PERSONAL INJURY OR DEATH.

UNIT TERMINALS ARE NOT DESIGNED
TO ACCEPT OTHER TYPES OF

FAILURE TO DO SO MAY CAUSE
DAMAGE TO THE EQUIPMENT.

USE COPPER CONDUCTORS ONLY!

CONDUCTORS.

SERVICING.

REMOTE DISCONNECTS BEFORE

HAZARDOUS VOLTAGE!

DISCONNECT, LOCK OUT AND TAG
ALL ELECTRIC POWER INCLUDING

}

}

Figure 33. Fan-powered low-height units with ECM

50 VAV-SVX08E-EN

Maintenance

Periodic maintenance of the VariTrane product is minimal,
but necessary for efficient operation. Routine
maintenance consists of inspecting/replacing the air filter s
of the fan-powered terminals.

Motors

Both the PSC (permanent split capacitor) and the ECM
(Electrically Commutated Motor) require no lubrication
during its normal life of operation.

Fan Wheel

Periodically, the fan wheel should be inspected for dirt or
debris and cleaned as necessary.

Filter

The filter on fan-powered terminals will need to be
inspected/replaced routinely depending on the
environmental conditions of the plenum.

Filter Change Out

• To remove the filter, turn each of the filter retaining
clips 90° (CW or CCW)

• Remove the filter and replace with new filter of the
same frame size.

• Return the filter clips to their retainng position by
turning them 90° (CW or CCW) back to their original
position.

Water Coil

Water coils should be inspected and the fins should be
cleaned periodically.

Water coils have been provided with an access panel as
standard to assist with inspection and cleaning.

Figure 34. Standard motor removal

Standard height fan-powered series and parallel fan
motors are replaceable through the filter opening and the
standard sliding side access panel. To access the fan
motor, the fan housing must be detached by removing the
mounting bolts that hold the housing to the fan board.
Removing the entire housing allows the fan motor, fan
housing, and fan wheel to be re-aligned on a workbench or
floor and prevent any possible fan wheel rubbing that may
occur. Removing the housing will provide access to the
motor shaft set screw that holds the fan wheel to the motor
shaft.

Fan Motor Replacement

WARNING

Hazardous Voltage w/Capacitors!

Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives
or other energy storing components provided by Trane
or others, refer to the appropriate manufacturer’s
literature for allowable waiting periods for discharge of
capacitors. Verify with an appropriate voltmeter that all
capacitors have discharged. Failure to disconnect power
and discharge capacitors before servicing could result
in death or serious injury.

For additional information regarding the safe discharge
of capacitors, see PROD-SVB06A-EN.

VAV-SVX08E-EN 51

Maintenance

Bottom View

The low-height fan assembly was designed with an inlet
ring that assists with removal of the fan motor. To access
the fan motor assembly, the bottom panel must be
removed. The inlet ring is held in place by six bolts and
three motor mount bolts. Remove these bolts and the
motor and fan wheel will come out of the fan housing.

Figure 35. Low-height motor removal

SCR Assembly

SCR solid state relays are used to switch a single heater
stage on and off. An intelligent (Master) relay is used for all
single phase applications. For three phase applications, a
Master-Slave configuration is used to switch two legs of
three phase power to the heater stage. The Master Relay
controls one leg independently, and provides a control
signal to the Slave Relay, which controls the second leg.

Figure 36. Typical heat sink fin orientation

Every Master or Master/Slave relay combination is
mounted on a heat sink to prevent the relays from
overheating during normal operation. The SCR assembly
must always be mounted with the heat sink fins oriented
vertically (See Figure 36, p. 52), with a minimum clearance
of ½" on all sides of the heat sink for cooling. Where
additional cooling slots are provided in the heater, the VAV
unit must be mounted with a minimum of 1" clearance in
front of the slots.

When the 0-10 VDC control voltage is present at the Master
relay in both single and three phase applications, an "ON"
indicating LED light on the Master relay will blink
continually (approximately 0.5 seconds on, 1.0 seconds
off). If the load side voltage is also present at the relay(s),
the Master relay LED and the Slave relay LED blink rate will
increase as the control signal increases. When the control
signal reaches a maximum of 10VDC, all LEDs will be lit
continuously, indicating that the relays are full-open and
continuously conducting. If the control signal is present in
three phase applications while the load side voltage is not,
only the Master relay LED will light and the blink rate will
be constant.

If the SCR assembly does not appear to be functioning
properly, verify that all required voltages are present and
all that all wiring is properly connected. If all these
conditions are verified, and the SCR LED(s) does not light
and/or the SCR relay(s) does not conduct, the entire SCR
heat sink assembly should be changed out. Individual
Master or Slave relays should not be replaced.

52 VAV-SVX08E-EN

Installation of Diffusers

General

All units must be installed upright and level as indicated by

the arrow on the side of the units. Return air slots should
be placed perpendicular and offset to the slot diffusers to
avoid short-circuiting of air distribution patterns.

Place the unit in its approximate final position and check
that it is upright and level. For single-slot units, engage
the back of the diffuser over the t-bar with an edge and
both ends resting on the t-bar. For double-slot units,
slide the unit over the t-bar. For center-notch units, place
diffuser over the t-bar, straddling it across a t-bar and
resting on the units ends.

If the unit has a fire damper, make sure that the damper is
still fully open. Diffuser discharge must always be flush
with the ceiling tiles to assure the proper airflow (Coanda
effect).

Diffusers require specific installation information when
mounting to a desired ceiling type. Select the ceiling type
that closely matches the job site application and use the
following procedures.

T-Bar Ceiling

Finish installation of the diffuser in t-bar ceiling. (See

Figure 37, p. 53.) Follow these procedures before the

ceiling construction is completed.

1. Position the diffuser at each end resting directly on the
structural t-bar for support and the t-bar fitting into the
channel provided at the unit discharge air throw.

2. A ceiling tile support flange is provided on each side of
the discharge slot of the unit. Trim ceiling tile
approximately 1½ inches each to allow for width of
discharge slot. For revealed edge ceilings, tile must be
cut in a “Z” pattern.

3. Install ceiling tiles in usual manner with cut edges
resting

on the flanges of the air slot.

Concealed Spline Ceiling

Follow these procedures to finish installation of control
and satellite diffusers and concealed spline for suspension
ceilings before completing the ceiling construction
(Figure 38, p. 53).

Place the units in their approximate final positions. If using
the trim angle diffuser, its slots must be even with the
spline level. If applying the trim accessory, the bottom of
the diffuser must be level with the finished ceiling.

If installing the trim accessory, insert the trim into the
ceiling opening from below and engage the diffuser slot to
the trim t-bar structure. With bottom flange of trim
accessory against the ceiling, and using the pre-drilled
holes in the flange as a guide, drill holes in the flange of the
diffuser. Join the diffuser and trim accessory with self­taping sheet metal.

Figure 38. Diffuser with trim accessory installation in

concealed spline ceiling

Figure 37. Diffuser installation in t-bar ceiling

VAV-SVX08E-EN 53

Installation of Diffusers

Drywall/Plaster Ceiling

Finish installation of diffusers in plaster ceiling. Follow
these procedures before completing the ceiling
construction (Figure 39, p. 54).

NOTICE:

Equipment Damage!

Do not install trim frame into ceiling using screws.

When diffuser is placed on the trim frames, it will pull

out.

1. Suspend the units above the intended ceiling level and
their approximate horizontal positions and finish
running flexible ductwork.

2. After drywall and/or plaster is installed, cut openings to
receive the diffuser air outlets. Also, allow for access
openings to complete installation and service of the
unit.

3. Slide the trim accessory up and into the ceiling
opening.
four guide holes in the lip of the diffuser slot. Lower
unit onto trim frame and attach with sheet metal
screws.

Note: The bottom of the throat section must be parallel to

Using the rim accessory as a template, drill

the ceilings for proper air distribution.

Figure 39. Diffuser with trim accessory installation in

plaster ceiling

Diuser Flange

Trim Accessory

Plaster trim frame attaches with 2–4
tension clips on the side of the diffuser.

54 VAV-SVX08E-EN

Trane optimizes the performance of homes and buildings around the world. A business of Ingersoll Rand, the leader in
creating and sustaining safe, comfortable and energy efficient environments, Trane offers a broad portfolio of advanced
controls and HVAC systems, comprehensive building services, and parts. For more information, visit www.Trane.com.

Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice.

© 2014 Trane All rights reserved

VAV-SVX08E-EN 16 Sep 2014

Supersedes VAV-SVX08D-EN (27 Jun 2013)

We are committed to using environmentally

conscious print practices that reduce waste.