Trane TKD Owner's manual
Rooftop Energy Recovery Module
for
TKD / TKH / WKD / WKH
YKD / YKH / DKD / DKH
# 125-155-175-200–250–265-290-340
# 275-300-350-400-500-600
April 2011 RT-SVX42B-E4
Installation
Operation
Maintenance
2 RT-SVX42B-E4
General information
Important recommendations
To avoid death, injury, equipment
or property damage, the following
recommendations should be observed
during equipment operation:
1. The units are suitable for ambient air
temperature between -20°C and +70°C
and for air flow temperature between
-20°C and +40°C. Different conditions
need written confirmation from the
manufacturer.
2. The usual measure against frost in coils
and protection against temperatures
have to be secured by the user.
3. Components - Some OEM products
have specific manufacturer’s service
instruction documents. These are
delivered inside the unit. In this case,
only the indications in the OEM manual
are valid and the service handbook in
hand has only general character for the
relating components.
4. As fire prevention, fire dampers are to be
provided where ducts cross firebreaks.
Local fire prevention code is to be
observed carefully.
To avoid death, injury, equipment
or property damage, the following
recommendations should be observed
during maintenance and service visits:
1. Disconnect the main power supply before
any servicing on the unit.
2. For inspection on the Air Handling Units
and to avoid risks, the units surroundings
are to be sufficiently lighted.
Reception
On arrival, inspect the unit before signing
the delivery note. In case of visible damage:
The consignee (or the site representative)
must specify any damage on the delivery
note, legibly sign and date the delivery
note, and the truck driver must countersign
it. The consignee (or the site representative)
must notify your local Trane sales office
and send a copy of the delivery note. The
customer (or the site representative) should
send a registered letter to the last carrier
within 3 days of delivery.
Reception in France only:
Concealed damage must be looked for at
delivery and immediately treated as visible
damage.
Reception in all countries except
France:
In case of concealed damage: The consignee
(or the site representative) must send a
registered letter to the last carrier within 7
days of delivery, claiming for the described
damage. A copy of this letter must be sent
to your local Trane sales office.
Warranty
Warranty is based on the general terms
and conditions of the manufacturer. The
warranty is void if the equipment is repaired
or modified without the written approval
of the manufacturer, if the operating limits
are exceeded or if the control system or the
electrical wiring is modified. Damage due
to misuse, lack of maintenance or failure to
comply with the manufacturer’s instructions
or recommendations is not covered by the
warranty obligation. If the user does not
conform to the rules of this manual, it may
entail cancellation of warranty and liabilities
by the manufacturer.
Foreword
These instructions are given as a guide to
good practice in the installation, start-up,
operation, and maintenance by the user, of
Trane Energy Recovery Module. They do
not contain full service procedures necessary
for the continued successful operation of
this equipment. The services of a qualified
technician should be employed through the
medium of a maintenance contract with
a reputable service company. Read this
manual thoroughly before unit start-up.
Warnings and cautions
Warnings and Cautions appear at
appropriate sections throughout this
manual. Your personal safety and the proper
operation of this machine require that you
follow them carefully. The constructor
assumes no liability for installations
or servicing performed by unqualified
personnel.
WARNING!: Indicates a potentially
hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION!: Indicates a potentially
hazardous situation which, if not avoided,
may result in minor or moderate injury. It
may also be used to alert against unsafe
practices or for equipment or property-
damage-only accidents.
© 2011 Trane
4 RT-SVX42B-E4
Installation
Cut the cable tie and prepare the cables at
the border of the ERM to ease the cable
installation into the rooftop front side.
Mount and use the delivered lifting device
for ERM handling as shown in Figure 2.
Figure 2 -
Energy Recovery Module
(ERM) preparation
Use the provided gasket inside the rooftop
unit and fix it to the ERM internal edge as
described in Figure 1.
Figure 1 -
RT-SVX42B-E4 5
Installation
The ERM needs to be supported on the perimeter panels.
The frame surface should be flat and perfectly aligned with the rooftop bottom plan. Position
the ERM so that it is aligned with the down left corner of the rooftop. See Figure 3.
Figure 3 -
Fasten the ERM with the flat / back side flange (1) to ensure the ERM is perfectly aligned
with the rooftop. See Figure 4
Fasten the front side vertical angle flange (2). Verify that the gasket is not damaged during
this operation.
Figure 4 -
6 RT-SVX42B-E4
Installation
Fasten the roof end to the ERM with self-drilling screws as shown in Figure 5.
Figure 5a -
Figure 5b -
Run all the ERM cable (power and actuator) and transparent hose (if installed) into the
rooftop fresh air / filter section.
Place the fresh air filter into the filter rack located behind the fresh air inlet louver
of the ERM.
RT-SVX42B-E4 7
Installation
Cable preparation
Depending on the ERM type and rooftop size, different connections need to be made. Refer to Figure 6 to perform the necessary connections.
Figure 6 - Connections
ERW
125-155-175-200-250-265-290-340
PHE
125-155-175-200-250-265-290-340
ERW
275-300-350-400-500-600
PHE
275-300-350-400-500-600
P+
P-
E
BR’
R
M
R
E
M
R
E
E
B
P-
P-
P+
M
E
B
R
R'
Plastic hose - Defrost pressure switch negative pressure port
Plastic hose - Defrost pressure switch positive pressure port
Power cable – Heat recovery Wheel motor (400V/3/50)
Power cable – Exhaust / Return fan motor (400V/3/50)
Control cable – Return air mixing damper actuator modulating
Control cable – Fresh air damper actuator (modulating)
Control cable – By-pass free cooling damper actuator (ON-OFF)
8 RT-SVX42B-E4
Installation
Exhaust / Return fan cable
connection
Run the power exhaust fan motor power
cables to the speed inverter.
Connect the three phases and ground
cable(s) to the MOTOR terminal of the
speed inverter.
Respect the cable numbers as shown in
Figure 7.
If two exhaust fan motors are installed,
repeat the operation two times.
The cable shield must be connected to the
chassis by means of the cable clamp.
M
56 57 58
1 2 3
400V / 3 /50Hz
B
50 51 52
1 2 3
24VAC
ON/OFF
50 51 55
5 1 2 3
24VAC
0-10VDC
P+ P-
B57
+ -
R’
0V +24VAC 0-10VDC
input0V +24VAC 24VAC
inputL1 L2 L3
Feedback
R
50 51 53 54
1 2 3 5
24VAC
0-10VDC
0V +24VAC 0-10VDC
input
Only PHE
125-155-175-200-250-265-290-340
Only PHEOnly ERW
WARNING!: insulate the cables to ensure there has not been any cable damage during shipping and installation.
Figure 7 -
Connect to the spring terminal blocks X50-
X51-X52-X53-X56-X57-X58. Connect
cables according to the following wiring
diagrams.
For Plate Heat exchanger versions, connect
the plastic hose to the differential defrost
pressure switch port.
Figure 8 - Connections
RT-SVX42B-E4 9
Installation
On unit sizes 125-155-175-200-250-
265-290-340, the return air sensor of the
economizer needs to be placed into to
return air section of the ERM.
Place return air temperature sensors in the
air return section of the ERM as indicated in
Figure 9.
ERW
125-155-175-200-250-265-290-340
PHE
125-155-175-200-250-265-290-340
Rooftopunit
Rooftopunit
RASRAS
Figure 9 -
10 RT-SVX42B-E4
Operation
Service Test Guide for Component Operation
Test and setup of the ERM is performed during the first two steps of the rooftop test sequence.
Step 1 of the test simulates normal ventilation mode of the unit.
Step 2 of the test simulates free cooling mode.
During step 1, adjust the return air damper position by turning the minimum position potentiometer on the Economizer module (ECA).
In case of plate heat exchanger version (PHE) adjust the exhaust fan speed minimum reference by changing the corresponding parameters. See
Exhaust Fan Setup section in this manual.
Heat Recovery Wheel (ERW)
Step Mode Indoor Fan Economizer
module
Exhaust fan
speed ERW motor Return air
mixing damper
1 Fan On ON Minimum Nominal ON Minimum
2 Econ. Free cooling ON 100% Open Nominal O Closed
Plate Heat Exchanger (PHE)
Step Mode Indoor Fan Economizer
module
Exhaust fan
speed
Plate heat ex-
changer by-pass
damper
Return air
mixing damper
1 Fan On ON Minimum Minimum OFF Minimum
2 Econ. Free cooling ON 100% Open Maximum By-pass Closed
If the damper actuator is operating in the opposite way as it should be, reverse the direction of the rotation selector switch as shown in figure
below.
Figure 10a - Damper actuator direction
1
0
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