Trane Unit Ventilator Energy Recovery System Catalogue
Classroom Unit Ventilator Accessories
Accessories from A to Z
Wall Boxes, Energy Recovery System,
Shelving, Side Wall Exhaust, Gravity Relief
Damper
UV-PRC005-ENMarch 2006
Introduction
Unit Ventilator Accessories
from A to Z
As a leader in applied unit ventilator
systems, Trane brings more than just
an authentic approach for HVAC design to the drawing table. Trane also
provides aesthetically pleasing solutions through their matching classroom accessories. Trane accessories
are intended to complement the unit
ventilator in order to provide a complete classroom system to the administrative staff.
Our full line of add-on accessories enhance the classroom unit ventilator
system by affording a seamless approach to a classroom layout.
Trane’s accessories include:
• Shelving
• Wall boxes
• Pipe covers
• Gravity relief damper (exhaust
stale air naturally from the classroom).
• Side wall power exhaust system
(exhaust stale air mechanically
from the classroom).
• and Unit ventilator energy recovery system (treats and filters incoming fresh air into the
classroom as well as exhausts
stale air from the classroom).
Trane has over 80-years of application
and design experience with indoor
comfort system. Our offices are
staffed with HVAC engineering professionals ready to work with you and
your system designer to help determine the best solution for your school.
©2006 American Standard Inc All rights reserved UV-PRC005-EN
Table of Contents
Introduction 2
Features and Benefits 4
Application Considerations 9
Model Number Description 10
Shelving
Energy Recovery Ventilator
Side Wall Exhaust / Gravity Relief Damper
10
11
12
General Data 13
Performance Data 14
Electrical Performance
14
Controls 15
Energy Recovery Control Operation
Wiring
15
16
Dimensional Data 19
Mechanical Specifications 30
UV-PRC005-EN 3
Features and Benefits
Energy Recovery Unit Ventilator
Energy Recovery Unit
Ventilator
Air conditioning systems have always
had one primary responsibility: deliver
sufficient amounts of conditioned air
into buildings. As indoor air quality issues grow proportionally, along with
the rising cost of energy, more is being
asked of these air conditioning systems.
To provide your facility with the best
possible balance of energy efficiency,
air quality and comfort, Trane offers
an energy recovery unit ventilator.
The job of the unit ventilator energy
recovery system is to provide every
room with the right amount of fresh air
necessary to comply with IAQ standards like ASHRAE 62, while minimizing installed cost and energy use. To
do this, it uses a desiccant-coated
wheel to transfer both sensible heat
and moisture from outside air to exhaust air in the summer, and from exhaust air to the incoming outside air in
the winter.
Traditionally, there has been a choice
when bringing in outdoor air. Either locally, or through centralized ventilation systems. With the unit ventilator
energy recovery system, the ductwork
associated with centralized systems is
eliminated, and possible humidity and
energy consumption problems encountered when locally introducing
outside air are also decreased.
Leading unit ventilator technology for
decades, Trane has developed a unit
ventilator that is as cost-effective, as it
is IAQ-smart.
Equipment Size
The energy recovery system allows up
to 500 cfm of outside air to be brought
into the space without putting a large
ventilation load on the unit ventilator
system.
Cabinet Finish
The unit cabinetry is made of a durable
industrial grade metal to withstand
student contact. An appliance grade
paint treatment increases the aesthetics of the equipment while making it
long-lasting for typical classroom environments.
An interior pipe channel on the energy
recovery unit ventilator allows the installer to easily connect the HVAC’s
unit ventilator piping with existing
system piping.
Access
A single panel access design of the
unit is easily removable, and provides
complete access to the unit fan, wheel,
filter, and controls.
Fan and Motor Assembly
Fans for the energy recovery unit ventilator are double-inlet, forwardcurved centrifugal variety. They have a
maximum speed of 1,050 rpm with
permanent split capacitor motors. The
fan housing is constructed of heavy
gauge metal to help reduce air noise
during operation. Wheel motors are
single-speed, permanent split capacitor with overload protection. Each fan
is equipped with a three speed switch
for air balancing.
Ultra Low Leak Dampers
An ultra-low leak, blade type outside
air damper is installed on every energy
recovery unit ventilator system. This
helps ensure low leakage of the outside air when the equipment is off. The
unit is available with two separate
damper assemblies.
The fresh air damper is a positive closure damper operated by a 24-volt, 3point floating control motor. The exhaust air damper is a gravity relief type
damper in order to help avoid overpressurization of the classroom.
Defrost Controls: In most cases,
Trane’s ultra low leak dampers effectively protect against unwanted air infiltration and possible desiccant wheel
frosting. Yet many buildings face outdoor air temperatures lower than 10°F
while still requiring outdoor air. For
this reason, the energy recovery unit
ventilator may be equipped with a
unique defrost control. Electric preheat is used to prevent frost from
building up on the heat exchange
wheel and other components.
Filters
Each unit comes equipped with two
separate filters. Depending on usage,
the outside air filters can either be 1 or
2-inches thick (disposable or pleated
style). They are easily removed,
thrown away and replaced. There is
also a 1-inch thick throwaway filter for
exhaust air.
Subbases
Subbases may be ordered to create
the desired height of the equipment if
mating up to an existing or retrofit application.
Controls
The unit may be controlled through
the ZN520 controller, or through a 24V
binary signal. All units are shipped
from the factory fully assembled, and
run-tested to assure that a quality
product is delivered.
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Features and Benefits
Energy Recovery Unit Ventilator
Air-to-Air Heat Exchanger
The air-to-air heat exchanger is designed to support two separate air
streams in a counter-flow direction.
The heat exchanger matrix prevents
less than one percent of cross contamination between the air streams. The
heat exchanger has the effectiveness
of up to 80-percent with equal airflow.
For extremely cold climates, it may be
necessary to provide a means to prevent the wheel from frosting. The controls for the electric preheat are
interlocked with a differential pressure
switch to prevent the element from
coming on without the fan operating.
The electric preheat (frost prevention)
kW should be sized based on the winter design dry bulb temperature and
the frost threshold temperature. See
selection procedure section to acquire
the sizing equation.
UV-PRC005-EN 5
Features and Benefits
Shelving
Unit Ventilator Shelving
Trane’s unit ventilator shelving was inspired by the needs of a classroom setting. The design supports applications
from simple book or file storage to a
draft barrier design. Piping compartments, a choice in tops and cut-to-fit
fillers creates a custom approach to
the space design. Trane’s shelving is
easy to install, and durable enough to
withstand even the most rigorous
classroom environment.
Cabinet Finish
The unit cabinetry is made of a durable
industrial grade metal to withstand
typical student wear/tear. An appliance grade paint treatment increases
the aesthetics of the equipment while
making it long-lasting.
All selections are equipped with leveling legs for proper matching to the
classroom unit ventilator, energy recovery system or side wall exhaust
system.
For units that include a dynamic (draft)
barrier design, a floor spacer will be installed at the back of the shelving unit
in order to block air flow under the
unit.
Each shelving component ships from
the factory with a standard set of installation hardware to help minimize
the need for field supplied components.
The Formica® top option is available
as a 1-inch particle board, finished with
a choice of Formica laminate to compliment and coordinate with paint color of the shelving unit. The laminate is
available in sections or continuous
lengths for a seamless appearance. A
flanged drop-in grille eliminates exposed edges, and is permanently fastened to prevent removal. The top may
be ordered with or without a grille.
An attractive metal top, painted in the
same color as the shelving unit, is a
low cost option to flatter the classroom space.
6 UV-PRC005-EN
Trane Unit Ventilator Shelving Configurations:
Closed Shelving
The closed shelving design is
available in 2, 3, 4 and 5-feet lengths.
Shelving depth includes 16 5/8" or 21
1/4" to accommodate retrofit and new
equipment installations. The units are
equipped with adjustable shelves that
are reinforced with a formed channel
for maximum strength. Closed
shelving doors include two locks as
standard. A bottom door guide adds
stiffness and durability for the sliding
doors.
Open Shelving
The open shelving design is available
in 2, 3, 4 and 5-feet lengths. Shelving
depth includes
16 5/8" or 21 1/4" to accommodate
retrofit and new equipment
installations. The units are equipped
with adjustable shelves that are
reinforced with a formed channel for
maximum strength.
Cut-to-fit Filler
The cut-to-fit filler piece is designed
to fill the gaps between small spaces.
The filler is available in an 18" or 36"
length, and may be cut-to-fit an area
as small as 4-inches. The fill-in
section has a removable front panel
to allow access to piping or electrical
connections.
Piping Compartment
The piping compartment is equipped
with a metal top, leveling legs and a
locking front panel. It is a standalone
piece of equipment that is best suited
for housing piping equipment for the
unit ventilator.The compartment is
designed to attached to either end of
the unit ventilator.
Formica Laminate Top
The laminate top selection is available
in many decorative colors, and in
lengths up to 12-feet. The tops may be
cut in the field to match any specific
length requested. A Gator Ply™ underside seals out moisture that could
potentially cause warping. It is available with or without a grille.
Features and Benefits
Side Wall Power Exhaust
Equipment Size
The side wall power exhaust provides
a nominal 500 (single fan) or 750 (dual
fan) cfm with a two speed switch. The
unit is available in a 15 1/4", 16 1/4" or
21 1/4" depth to support all retrofit and
new construction applications.
Cabinet Finish
The unit cabinetry is made of a durable
industrial grade metal to withstand
typical student wear/tear. An appliance grade paint treatment increases
the aesthetics of the equipment while
Side Wall Power Exhaust
Quick removal of concentrated air
contaminants and building pressurization are two reasons to include an
exhaust systems into the IAQ design.
Building areas that often contain a
build-up of these contaminants are
science labs, vocational/technical
shops, cafeterias, and indoor pools.
These areas should be maintained
under negative pressure relative to
adjacent spaces.
Trane’s side wall power exhaust system is designed to aid in the removal
of these contaminants from the classroom environment. As a standalone
unit design, the side wall power
exhaust may be utilized with or without the complete unit ventilation system. Unit control may also be
delivered through a ZN520 controller
connection, allowing the side wall
power exhaust to blend seamlessly
with the vertical unit ventilator system
to sustain complimentary unity of the
entire classroom design.
making it long-lasting. Adjustable leveling legs are designed into the base
corners providing flexibility to mate
the unit with the unit ventilator, shelving or the energy recovery system.
The single front panel is secured by
three camlock fasteners.
A polyurethane gasket seal is placed
along the perimeter of the discharge
opening to secure the back draft
damper at the wall opening.
Motor and Drive
All motors are a two-speed, 115/60/1
voltage and fans are direct-drive. The
motors are permanently lubricated,
sleeve type bearings which do not require oiling.
Unit Switch
The unit’s on-off switch is housed in
the left hand end pocket below the discharge air grille.
UV-PRC005-EN 7
Wall Boxes
Wall boxes are to be installed prior to
mounting the Classroom Unit Ventilator, Side Wall Exhaust, or Energy Recovery Unit Ventilator. Its intended use
is to help deter animals, trash, or rainfall from entering into the mechanical
system providing a year-round outdoor intake for the HVAC equipment.
Finish
Trane’s wall boxes are constructed of
heavy gauge aluminum and designed
to last the life of the building. Internal
parts are interlocked, in addition to being held securely in place by the
frame-within-a-frame design. This assures proper louver alignment.
Louvers are vertically or horizontally
aligned, and held in position by an integral spacing guide. The boxes are
available with an anodized aluminum
finish, or a baked enamel finish.
Wall box arrangements are furnished
with a diamond pattern, expanded aluminum bird screen to eliminate objects from blowing into the building.
The grilles are aluminum and the
same finish as the frame.
Wall Box Types
Trane offers a variety of wall boxes to
support different needs and applications. Each are sized to match the
classroom unit ventilator intake, and
may be ordered with or without a recessing flange. See dimensional data
for free area velocity of each wall box
design.
Features and Benefits
Wall Boxes and Gravity Damper
Gravity Relief Damper
The gravity relief damper is a barometrically operated design which prevents
over pressurization of the classroom.
The damper is typically located in a
plenum, or behind the 21 1/4" classroom shelving with a grilled top. An
optional wall box is recommended to
deter objects from easy entry into the
building.
Finish
Trane’s gravity relief damper is constructed from high grade aluminum
and is designed for durability and
long-stay. The dampers are horizontally arranged into the assembly.
Pipe Cover
The pipe cover assembly consists of
the pipe enclosure, mounting strip and
pipe hangers. It adds a decorative
touch to the room decor by removing
the supply/return/condensate pipe exposure.
The enclosure is constructed from
heavy gauge metal and finished to
match the classroom unit ventilator.
The steel cover is locked to the mounting strip with non-visible fasteners.
The mounting strip is a continuous roll
formed steel and contains a full length
channel for the enclosure. The pipe
hangers are .148-inch in diameter, zinc
plated steel wire. The hangers are designed to support up to two, 2 1/8" O.D.
insulated pipes.
8 UV-PRC005-EN
Application
Considerations
Energy Recovery Unit Ventilator
Operation
An energy recovery ventilator can
help make mechanical ventilation
more cost effective by transferring
energy between the outdoor air and
the building exhaust air.This desiccant-coated wheel revolves through
the outdoor and exhaust air streams.
During the cooling season, sensible
heat and moisture are transferred
from the outdoor air to the exhaust air
stream, and rejected from the building. During the heating season, sensible heat and moisture are transferred
from the exhaust air to the outdoor air
stream, heating and humidifying the
entering outdoor air.
After passing through the energy
recovery unit ventilator, the warmed
or cooled fresh air goes through the
classroom unit ventilator for further
air treatment.
In extremely cold climates, it may be
necessary to provide some means to
prevent the wheel from frosting.
Trane’s energy recovery unit ventilator
is equipped with a UL-listed electric resistance preheat element for frost prevention.
The controls for the electric preheat
coil are interlocked with a differential
pressure switch to prevent the element from coming on without the fan
operating.
The electric preheat coil should be
sized based on winter design dry bulb
temperature (T
)and the frost thresh-
OA
old temperature (TTH). Example:
kW required = 1.08 x 500 cfm x (TTH-TOA)
3134
Where frost threshold is determined
by the relative humidity of the space in
the winter.
Room Relative
Humidity
30% 5
40% 10
50% 15
Frost Threshold Temp - T
(F)
TH
UV-PRC005-EN 9
Model Number
Shelving
SHL B G 2 05 D0 0 F A D 0 0 0
5
10 15
DIGIT 1-3: UNIT CONFIGURATION
SHL = Classroom Shelving
DIGIT 4: DEVELOPMENT
SEQUENCE
B = Current Sequence
DIGIT 5: SHELVING STYLE
0 = Continuous Top ONLY/No
Shelving
2 = 18-inch Cut-to-Fit Filler
3 = 36-inch Cut-to-Fit Filler
4 = 12-inch Piping Compartment
5 = 18-inch Piping Compartment
A = 2-ft Open Shelving
B = 3-ft Open Shelving
C = 4-ft Open Shelving
D = 5-ft Open Shelving
E = 3-ft Closed Shelving
F = 4-ft Closed Shelving
G = 5-ft Closed Shelving
H = 3-ft Open Shelving
with Dynamic Air Barrier
J = 4-ft Open Shelving
with Dynamic Air Barrier
K = 5-ft Open Shelving
with Dynamic Air Barrier
L = 3-ft Closed Shelving
with Dynamic Air Barrier
M = 4-ft Closed Shelving
with Dynamic Air Barrier
N = 5-ft Closed Shelving
with Dynamic Air Barrier
DIGIT 6: SHELVING TOP DEPTH/
GRILLE
0 = Not Required
1 = 16 5/8-inch Shelving and Top
Depth
2 = 21 1/4-inch Top Depth w/o Grille
3 = 21 1/4-inch Top Depth w/ Steel
Grille
4 = 21 1/4-inch Top Depth
w/Aluminum Grille and Damper
5 = 21 1/4-inch Top Depth
w/Aluminum Grille
6 = 16 5/8-inch Deep Piping
Compartment
7 = 21 1/4-inch Deep Piping
Compartment
DIGIT 7&8: LENGTH of FORMICA
TOP
00 = No Formica Top for Shelving
Selected
01 = Formica Top w/Same Size and
Shelving
02 = 2-ft Top Only (no shelving)
03 = 3-ft Top Only (no shelving)
04 = 4-ft Top Only (no shelving)
05 = 5-ft Top Only (no shelving)
06 = 6-ft Continuous Top
07 = 7-ft Continuous Top
08 = 8-ft Continuous Top
09 = 9-ft Continuous Top
10 = 10-ft Continuous Top
11 = 11-ft Continuous Top
12 = 12-ft Continuous Top
18 = 18-inch Top Only (no shelving)
DIGIT 9&10: DESIGN SEQUENCE
Current Sequence
DIGIT 11: DECORATOR FORMICA
TOPS
0 = No Top
1 = Metal Top
A = Champagne Papyrus Formica®
To p
E = Almond Formica Top
F = Ivory Blushing Formica Top
G = Natural Canvas Formica Top
H = Glacier Slate Formica Top
J = Birch Formica Top
K = Folkstone Formica Top
M = Fog Formica Top
N = Tundra Terra Formica Top
Q = Stone Dust Formica Top
DIGIT 12: SHELVING PAINT
COLOR
0 = No Color Shelving Finish
A = Cameo White Shelving Finish
B = Soft Dove Shelving Finish
C = Deluxe Beige Shelving Finish
D = Driftwood Grey Shelving Finish
E = Rose Mauve Shelving Finish
F = Stone Grey Shelving Finish
G = Bronze Tone Shelving Finish
DIGIT 13: END COVERS
0 = No End Covers
A = 16 5/8-inch Deep End Covers
w/o Cutouts
B = 16 5/8-inch Deep End Covers
w/Std. Cutouts
C = 16 5/8-inch Deep End Covers
w/Extended Cutouts
D = 21 1/4-inch Deep End Covers
w/o Cutouts
E = 21 1/4-inch Deep End Covers
w/Std. Cutout
F = 21 1/4-inch Deep End Covers
w/Extended Cutouts
DIGIT 14: SUBBASE
0 = No Subbase Feature
2 = 2-inch Subbase
4 = 4-inch Subbase
6 = 6-inch Subbase
DIGIT 15: KICKPLATE
0 = Louver Front Kickplate (no side)
1 = Louver Front and Side Kickplate
2 = Solid Front Kickplate (no side)
3 = Solid Front and Side Kickplate
DIGIT 16: KEY LOCK
0 = Standard Lock
1 = Master Key for Lock
ADDITIONAL ACCESSORIES
SGRL: Extra Steel Grille
2ft: Extra 2-ft Steel Grille
3ft: Extra 3-ft Steel Grille
4ft: Extra 4-ft Steel Grille
5ft: Extra 5-ft Steel Grille
AGRL: Extra Aluminum Grille
2ft: Extra 2-ft Aluminum Grille
3ft: Extra 3-ft Aluminum Grille
4ft: Extra 4-ft Aluminum Grille
5ft: Extra 5-ft Aluminum Grille
10 UV-PRC005-EN
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