Trane Energy Wheels Owner's manual

August 2001 CLCH-SVX01B-EN
Installation
Operation
Maintenance
Energy Wheels
for T-Series Climate Changer™
Air Handlers

© 2001 American Standard Inc. All rights reserved

CLCH-SVX01B-EN 3
General Information.................................................. 4
Installation ................................................................. 8
Wiring....................................................................... 13
Operation ................................................................. 14
Routine Maintenance.............................................. 16
Service and Repair .................................................. 21
Troubleshooting...................................................... 25
Contents

4CLCH-SVX01B-EN
General
Information
Warnings and Cautions
Notice that Warning and Caution appear at appropriate places in
this manual.
WARNING
...indicates a potentially hazardous situation that could result
in death of serious injury.
CAUTION
...alerts you to conditions that may result in minor or
moderate injury or equipment damage.
Unit Description
The T-Series Climate Changer™ (TSC) energy wheel section is an
efficient, low maintenance energy recovery device. It is an integral
part of an entire air-handling system. The section consists of the
energy wheel cassette assembly, dampers, and an outside air
hood. A single, large access door is provided on one side of the
section for service access into the return/exhaust air section (see
Figure 1).
Figure 1. T-Series energy wheel section

CLCH-SVX01B-EN 5
Two additional access doors are provided for service access into
the outside/supply air section. The two access doors are accessible
from the inside of the air handler.
The energy wheel cassette is permanently installed in the section.
In all but the 1500 CFM wheel size, the individual segments of the
energy wheel are removable for cleaning or replacement. The 1500
CFM wheel is small enough to be removed and cleaned as a single
unit.
Optional air bypass dampers, actuators, and temperature sensors
may ship with the section. If ordered, these options are factory-
installed.
How the Section Arrives at the Job Site
The energy wheel section will arrive mounted to wood blocks on
the corners. The section is held on to the skid with screws. Leave
the section mounted to the wood skid until it is ready to install to
help protect it from damage during rigging and handling.
Amowrap® Covering: The large openings of the section are
protected by Amowrap reinforced plastic covering. The Amowrap
covering is held on to the section with a wood frame and sheet
metal screws. Leave the Amowrap covering attached to the section
until it is ready to install to prevent debris from entering the
section.
Hardware Kit: A hardware kit ships inside the T-Series air handler.
This kit contains gasketing, roof joint connection strips, wall panel
seam caps, and screws, which are used when fastening the section
to the air handler. This kit also contains the screws and gasket tape
to mount the outside air hood to the section. Keep the hardware kit
with the energy wheel section until it is ready to install.
Access Doors: The internal access doors are secured for shipment
with conduit clamps. Remove and discard the conduit clamps
when the section arrives.
Outside Air Hoods: Outside air hoods may ship separately from the
energy wheel section. They are fastened to a wood skid. Keep the
hoods fastened to the skid until they are ready to install. The screws
and gasket tape to mount the hoods are in the hardware kit located
inside the section.

6CLCH-SVX01B-EN
Contractors’ Responsibilities
Installing Contractor:
• Unpack the section and remove the skid.
• Remove the Amowrap® protective covering.
• Rig and/or move the section to the air handler location. The
contractor must provide slings, spreader bars, clevis, hooks,
pins, etc. for rigging.
• Provide a level roof curb or structural steel support system for
the air handler. The air handler cannot be set on a ground level
pad because ductwork connections to the energy wheel section
are made from underneath the section.
• Assemble the energy wheel section to the air-handling system.
Refer to the T-Series installation and maintenance manual,
CLCH-IM-16A, for specific assembly instructions.
Electrical and/or Controls Contractor:
• Provide high voltage power to the energy wheel section. See
the the “Wiring” section on page 13 for voltage requirements.
Note that the energy wheel may have different voltage and
phase requirements than the exhaust fan. A starter for the
energy wheel may be provided. It is located in the exhaust fan
control panel.
• If the unit is not ordered with controls or end devices, it is the
installer’s responsibility to provide and install them.
Receiving Inspection
Upon receipt of the section, inspect it for damage that may have
occurred during shipment. Report damage immediately to the
freight company.
• Inspect the access door latches and hinges for damage.
• Open the access door and check for internal, hidden damage.
Concealed damage must be reported within 15 days of receipt.
The Trane Company is not responsible for shipping damage.
• Locate the hardware kit. Examine the energy wheel motor,
drive, and energy transfer segments for damage. Do not
remove the section from the skid at this time.
• Manually rotate the energy wheel to ensure free movement of
the bearings and drive.
Storage
The T-Series energy wheel section is designed for outdoor use and
requires no special protection during storage. Select a solid, well-

CLCH-SVX01B-EN 7
drained area. Concrete or black top surfaces are recommended. If
concrete or black top is not available, set the section on wood
timbers to prevent dirt, mud, snow, etc. from getting into the
section. Trane does not recommend covering the section with clear
or black plastic sheets because this material traps condensed
moisture, which can cause equipment damage resulting from rust
and corrosion. If needed, cover with a canvas tarp. The Trane
Company warranty does not cover equipment damage due to
negligence during storage.
Service Clearance Recommendations
A minimum clearance of 48 inches on the access door side of the
energy wheel section is recommended for routine maintenance.
Clearance equal to the cabinet width is recommended on one side
to permit disassembly and wheel removal if required. Refer also to
the T-Series installation and maintenance manual, CLCH-IM-16A,
for air handler service clearance recommendations.

8CLCH-SVX01B-EN
Installation
CAUTION
Do not lift the unit from the top! Lift only from lifting lugs
located at the bottom of the unit. Failure to do so may cause
product or property damage.
Section Weights and Dimensions
Refer to Figure 2, Figure 3, Table 1, and Table 2 for section dimen-
sions and weights.
Figure 2. Dimensional data, plan view

CLCH-SVX01B-EN 9
Figure 3. Dimensional data, side elevation

10 CLCH-SVX01B-EN
Table 1. Energy wheel section dimensions (inches) and weights: 100% outside air1
1. Section dimensions and weights subject to change without notice. Refer to Trane submittals for current dimensions and weights.
Unit Size Section Dimensions Outside Air Hood Return Air Weight
(lb)
WHL SYZT RA B
8 54 38.75 68.50 21.50 19.67 12.50 17.00 11.5 13.88 34.63 631
10 66 41.75 83.50 34.50 19.67 15.50 17.00 13 19.63 55.13 854
12 70 45.75 83.50 34.50 19.67 19.50 17.00 14.5 19.63 59.13 951
14 74 48.75 99.00 38.50 19.67 21.50 17.00 16 19.63 63.13 1308
17 80 52.75 99.00 38.50 19.67 25.50 17.00 16 25.38 69.13 1389
21 82 57.75 108.00 46.75 25.27 24.50 20.50 19 25.38 71.13 1605
25 84 63.50 115.50 50.75 25.27 30.75 20.50 19 31.13 73.13 1755
30 97 63.50 120.00 50.75 25.27 30.63 20.50 22 31.13 86.13 2213
35 102 72.75 127.00 54.00 30.97 34.25 24.00 22 36.88 90.13 2563
40 115 72.75 135.00 54.00 30.97 34.25 24.00 23 36.88 103.13 2864
50 126 85.00 148.50 64.50 36.73 40.50 27.63 26 36.88 114.13 3484
Table 2. Energy wheel section dimensions (inches) and weights: partial outside air1
1. Section dimensions and weights subject to change without notice. Refer to Trane submittals for current dimensions and weights.
Unit Size Section Dimensions Outside Air Hood Return Air Weight
(lb)
WH L S Y Z T R A B
8 54 38.75 79.00 21.50 19.67 12.50 17.00 11.5 13.88 34.63 686
10 66 41.75 83.50 34.50 19.67 15.50 17.00 13 19.63 55.13 916
12 70 45.75 83.50 34.50 19.67 19.50 17.00 14.5 19.63 56.13 985
14 74 48.75 99.00 38.50 19.67 21.50 17.00 16 19.63 63.13 1168
17 80 52.75 99.00 38.50 19.67 25.50 17.00 16 25.38 69.13 1312
21 82 57.75 108.00 46.75 25.27 24.50 20.50 19 25.38 71.13 1524
25 84 63.50 115.50 50.75 25.27 30.75 20.50 19 31.13 73.13 1690
30 97 63.50 120.00 50.75 25.27 30.63 20.50 22 31.13 86.13 1906
35 102 72.75 127.00 54.00 30.97 34.25 24.00 22 36.88 90.13 2497
40 115 72.75 135.00 54.00 30.97 34.25 24.00 23 36.88 103.13 2783
50 126 85.00 148.50 64.50 36.73 40.50 27.63 26 36.88 114.13 3527
66 141 97.00 152.00 71.00 42.53 46.75 31.18 30 43.50 130.25 4145
80 141 112.00 152.00 71.00 48.13 56.13 34.63 30 49.25 130.25 4313
100 156 124.50 152.00 71.00 70.42 46.38 48.33 30 55 145.25 4816

CLCH-SVX01B-EN 11
Rigging/Lifting
Refer to the T-Series installation and maintenance manual, CLCH-
IM-16A, for instructions on equipment rigging and lifting. It ships
inside the air handler fan section.
WARNING
HEAVY OBJECT! Follow good lifting practices before lifting
the unit. These include following instructions in the T-Series
installation and maintenance manual, CLCH-IM-16A,
estimating the center of gravity, and test lifting the unit to
check balance and stability. Do NOT use fork lifts to handle
the units. Never lift the units in windy conditions or raise the
units above personnel. Failure to follow all instructions could
result in death or serious injury.
CAUTION
Do not attach the outside air hoods to the unit prior to lifting
the unit. Doing so could damage the equipment.
Assembly
Refer to the design engineer’s plans and submittals and the factory
sales order for location of the energy wheel section in the air
handler. The energy wheel section will arrive at the job site as an
individual section of the air handler. Each individual section must
be hoisted, set on the roof curb or pier mount, and assembled. The
outside air hoods must also be mounted as individual sections.
Refer to the T-Series installation and maintenance manual, CLCH-
IM-16A, for further instructions on equipment assembly. This
manual ships inside the air handler fan section.
Table 3. Air bypass damper torque requirements (lb-in) per damper: 100%
outside air
Table 4. Air bypass damper torque requirements (lb-in) per damper: partial
outside air
UnitSize8 10121417212530354050
Torque 13 17 18 28 30 32 32 45 47 54 60
UnitSize8 1012141721253035405066 80 100
Torque 18 22 26 32 34 36 51 63 66 76 84 124 124 140

12 CLCH-SVX01B-EN
Refer to Table 5 for the actuator sizing requirements for Traq™
dampers. Traq dampers are optional dampers that measure the
outside air CFM. The torque values specified are for each side.
Table 5. Traq™ damper torque requirements (lb-in) per side
UnitSize8 101214172125303540506680100
Torque 12 24 24 24 24 24 24 24 28 28 28 30 30 56

CLCH-SVX01B-EN 13
Wiring
Energy Wheel Motor
A separate power source for the energy wheel motor is required.
The energy wheel section is provided with fuses, a disconnect
switch, and a starter located in the exhaust fan starter cabinet. The
power connection for the energy wheel motor is made to a terminal
block at this point. Follow all national and local electrical codes for
running power to the terminal block. Refer to Table 6 for the energy
wheel voltage and amperage requirements. Refer to the factory
sales order to determine the energy wheel size. Voltage and
amperage specifications can also be found on the energy wheel
motor nameplate located inside the energy wheel section.
Table 6. Energy wheel voltage and terminal block
CAUTION
Do not install a variable frequency drive (VFD) to control the
energy wheel speed. This may result in failure of the energy
wheel motor.
Optional Air Bypass Damper Actuators: If actuators are factory-
provided, no field wiring is required.
Field-Provided Damper Actuators: If bypass damper actuators are
field-provided, it will be necessary to remove two or three
segments from the energy wheel to gain access to the damper. See
the “Routine Maintenance” section on page 16 for the segment
removal procedure.
Wheel Size
(nominal cfm)
Motor
hp Motor voltage/phase Motor Hz
Motor
Amperage
1,500 ¹⁄₆ hp 200-208/240 volt, single-phase 50/60 1.1
3,000 ¹⁄₂ hp 200-208/240 volt, single-phase 50/60 2.7
¹⁄₆ hp 200-230/460 volt, three-phase 50/60 1.04/0.52
4,000, 5,000 ¹⁄₂ hp 200-208/240 volt, single-phase 50/60 2.7
¹⁄₆ hp 200-230/460 volt, three-phase 50/60 0.84/0.38
6,000–25,000 ¹⁄₄ hp 200-230/460 volt, three-phase 60 1.6/0.8

14 CLCH-SVX01B-EN
Operation
WARNING
TOXIC HAZARDS! Do not use an energy wheel in an
application where the exhaust air is contaminated with
harmful toxins or biohazards, which could result in death or
serious injury.
WARNING
HAZARDOUS VOLTAGE! Disconnect the electrical and
remote disconnects before servicing. Do not open the service
access doors while the unit is operating. Failure to disconnect
all electrical power before servicing could result in death or
serious injury.
WARNING
ROTATING PARTS! Disconnect all electrical and remote
disconnects before servicing. Secure drive sheaves to ensure
rotor cannot freewheel. Failure to disconnect all electrical
power before servicing could result in death or serious injury.
WARNING
Keep hands away from the rotating wheel! Contact with the
rotating wheel can cause physical injury.
Energy Wheel Start-Up
1Turn the energy wheel clockwise (as viewed from the pulley
side) by hand to verify that the wheel turns freely through a
full rotation.
2Confirm that all wheel segments are fully engaged in the
wheel frame and that the segment retainers are completely
fastened (see Figure 4).
3With hands and objects away from moving parts, activate the
wheel and confirm that the wheel rotates. Correct rotation
direction is clockwise as viewed from the pulley side.
4Start and stop the wheel several times to confirm the seal
adjustment and proper belt tracking on the wheel rim. Correct
belt tracking is approximately midway between the seal plate
and the outer edge of the rim (see Figure 5).
5If the wheel has difficulty starting, turn off the power and
inspect the wheel for excessive interference between the
wheel surface and the four diameter seals. To correct inter-
ference, loosen the diameter seal adjusting screws and back

CLCH-SVX01B-EN 15
the diameter seals away from the surface of the wheel. Apply
power to confirm free wheel rotation. Re-adjust and tighten
the seals according to instructions in the “Service and Repair”
section on page 21.
Figure 4. Segment retainers
Figure 5. Belt tracking
Damper Actuators (if so equipped): Stroke the actuators to observe
full open and full closure of the dampers. Adjust the actuator and/
or linkage to prevent “over-stroking” so that excessive pressure is
not placed on the damper at the full open or full closed position.

16 CLCH-SVX01B-EN
Routine
Maintenance
CAUTION
Do not use acid based cleaners, aromatic solvents, steam, or
temperatures in excess of 170°F. Doing so may cause damage
to the wheel!
Cleaning the Energy Wheel
Disconnect all electrical power, then use a vacuum or brush to
remove accumulated material from the face of the wheel. Examine
the energy wheel monthly for material build-up on the wheel.
If more aggressive cleaning is needed, follow these steps:
1Wash the segments or the wheel in a five-percent solution of
non-acid-base coil cleaner (part no. CHM00021 at your local
Trane parts center) or in a alkaline detergent and warm water.
2Soak the segments in the solution until grease, oil, and tar
deposits are loosened.
3Before removing the cleaner, rapidly run your fingers across
the surface of segments to separate polymer strips for better
cleaning action.
4Rinse the dirty solution from the segments and remove the
excess water before re-installing the segments in the wheel.
Note that some permanent staining of the desiccant may
remain but is not harmful to performance.
Cleaning Frequency
In reasonably clean office or school buildings, cleaning with a coil
cleaner solution may not be required for several years. If the
energy wheel is exposed to air streams containing, for example,
high levels of occupant tobacco smoke, cooking facility exhaust air,
or oil-based aerosols found in machine shop areas, annual or more
frequent cleaning may be required to remove these contaminants
and restore performance. Periodic inspection of the wheel should
be done to determine the cleaning intervals.
WARNING
Disconnect electrical power before servicing. Do not open the
service access doors while the unit is operating. Failure to
disconnect all electrical power before servicing could result
in death or serious injury.

CLCH-SVX01B-EN 17
WARNING
Always keep hands away from the bearing support beam
when installing or removing segments. Failure to do so could
result in serious injury.
High-maintenance applications may benefit from keeping a spare
set of clean segments on hand. This allows for rapid change-out of
clean segments with minimal downtime. The dirty segments can
then be cleaned at a convenient time.
Segment Removal
WARNING
HAZARDOUS VOLTAGE! Disconnect all electrical and remote
disconnects before servicing. Do not open the service access
doors while the unit is operating. Failure to disconnect all
electrical power before servicing could result in death or
serious injury.
Wheel segments are secured to the wheel frame by a segment
retainer that pivots on the wheel rim and is held in place by a
segment retaining catch.
1Disconnect all electrical power.
2Unlock the two segment retainers, one on each side of the
selected segment opening (see Figure 6).
3Remove the segment from the wheel frame. It may be
necessary to gently pry the segment out of the wheel with a
screwdriver.
4Pull the segment up and out of the wheel frame.
5Close any open segment retainer prior to rotating the wheel.
Failure to close the retainer may damage the retainer, seals, or
segments.
6Rotate the wheel and continue this procedure to remove all
segments (see Figure 7).

18 CLCH-SVX01B-EN
Figure 6. Energy wheel segment retainer and retaining catch
Figure 7. Segment removal
Segment Replacement
WARNING
HAZARDOUS VOLTAGE! Disconnect all electrical and remote
disconnects before servicing. Do not open the service access
doors while the unit is operating. Failure to disconnect all
electrical power before servicing could result in death or
serious injury.
1Disconnect all electrical power.
2Unlock the two segment retainers, one for each side of the
selected segment opening.

CLCH-SVX01B-EN 19
3With the embedded stiffener facing the motor side, insert the
nose of the segment between the hub plates.
4Holding the segment by the two outer corners, press the
segment toward the center of the wheel and inward against
the spoke flanges. If hand pressure does not fully seat the
segment, insert the flat tip of a screwdriver between the wheel
rim and the outer corners of the segment and apply gentle
force while guiding the segment into place. Be careful not to
bend the wheel frame or the segment frame with the screw-
driver.
5Close and latch each segment retainer under the segment
retaining catch.
6Rotate the wheel and repeat this sequence with the remaining
segments.
Removing and replacing the segments with a spare set can be
accomplished more quickly. Remove the dirty segment, replace it
with a clean segment, then move to the next segment.
Cleaning the Energy Wheel Motor
Disconnect all electrical power, then use a vacuum cleaner and
brush to remove accumulated material from the energy wheel
motor. The use of spray aerosol cleaners is not recommended.
Examine the motor monthly for debris accumulation.
Cleaning the Section
WARNING
HAZARDOUS VOLTAGE! Disconnect all electrical and remote
disconnects before servicing. Do not open the service access
doors while the unit is operating. Failure to disconnect all
electrical power before servicing could result in death or
serious injury.
1Disconnect all electrical power.
2Use a vacuum cleaner to remove dust and debris from the
section surfaces. If needed, use a detergent solution to
remove grease, oil, or other stubborn deposits from section
surfaces. Follow the manufacturer’s instructions regarding use
of the product.
3Rinse the cleaning product thoroughly from section walls. The
use of a water stream from a garden hose or high pressure
washer is not recommended.
4Examine the section monthly for material build-up on the wall
surfaces.

20 CLCH-SVX01B-EN
Filtration
Debris screens are provided on the energy wheel section to prevent
debris from entering the energy wheel section. Inspect these
screens monthly and clean them as necessary.
Bearing and Motor Lubrication
The wheel drive motor and wheel support shaft bearings are
permanently lubricated and no further lubrication is necessary.
Energy Wheel Drive Belt Adjustment
The drive belt is a urethane stretch belt designed to provide
constant tension throughout the life of the belt. No periodic
adjustment is required. Inspect the belt annually for proper tracking
and tension. A properly tensioned belt will turn the wheel immedi-
ately, with no visible slippage, when power is applied.