Trane Intellipak 2 Service Manual

							Unit Startup
RT-SVX24K-EN141
Figure 94. Operating pressure curve (all comp. and cond. fans per ckt. on)—90 tons high capacity
Figure 95. Operating pressure curve (all comp. and cond. fans per ckt. on)—105 tons standard capacity 
						

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142RT-SVX24K-EN
Figure 96. Operating pressure curve (all comp. and cond. fans per ckt. on)—105 tons high capacity
Figure 97. Operating pressure curve (all comp. and cond. fans per ckt. on)—120 tons standard capacity 
						

							Unit Startup
RT-SVX24K-EN143
Figure 98. Operating pressure curve (all comp. and cond. fans per ckt. on)—120 tons high capacity
Figure 99. Operating pressure curve (all comp. and cond. fans per ckt. on)—130 tons standard capacity 
						

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144RT-SVX24K-EN
Note:Due to the variable speed fans on evaporative
condenser units, typical operating pressure curves
are not relevant. If operating pressures at certain
conditions are needed, contact a local Trane sales
representative.
Figure 100. Operating pressure curve (all comp. and cond. fans per ckt. on)—130 tons high capacity
Figure 101. Operating pressure curve (all comp. and cond. fans per ckt. on)—150 tons standard capacity 
						

							Unit Startup
RT-SVX24K-EN145
Components
Standard Unit without Energy Recovery
Wheel
Economizer Damper Adjustment
Exhaust Air Dampers
Verify that the exhaust dampers (if equipped) close tightly
when the unit is off. Adjust the damper linkage as
necessary to ensure proper closure. An access panel is
provided under each damper assembly.
Outside Air & Return Air Damper Operation
The outside air and return air damper linkage is accessible from the filter section of the unit. The damper linkage
connecting the outside air dampers to the return air
dampers is preset from the factory in the number 1
position. Refer to Figure 102, p. 146 for the appropriate
linkage position for the unit and operating airflow (CFM).
Note: Bridging between the unit main supports may
consist of multiple 2 by 12 boards or sheet metal
grating.
Arbitrarily adjusting the outside air dampers to open fully when the return air dampers are closed or; failing to
maintain the return air pressure drop with the outside air
dampers when the return air dampers are closed, can
overload the supply fan motor and cause building
pressurization control problems due to improper CFM
being delivered to the space.
The outside air/return air damper linkage is connected to a crank arm with a series of holes that allows the installer
or operator to modify the amount of outside air damper
travel in order to match the return static pressure. Refer to
Table 43, p. 148 for the equivalent return air duct losses
that correspond to each of the holes illustrated in
Figure 102, p. 146 .
To Adjust the Outside Air Damper Travel:
1. Drill a 1/4 hole through the unit casing up stream of
the return air dampers. Use a location that will produce
an accurate reading with the least amount of
turbulence. Several locations may be necessary, and
average the reading. HIGH VOLTAGE IS PRESENT AT TERMINAL BLOCK OR
UNIT DISCONNECT SWITCH.
2. Close the disconnect switch or circuit protector switch
that provides the supply power to the unit terminal
block or the unit mounted disconnect switch.
3. Turn the 115 volt control circuit switch and the 24 volt control
 circuit switch to the “On” position.
4. Open the Human Interface access door, located in the unit
 control panel, and press the SERVICE MODE key to
display the first service screen. Refer to the latest
edition of the applicable programming manual for
applications for the SERVICE TEST screens and
programming instructions.
5. Use Table37, p.11 2to program the following system
components for operation by scrolling through the
displays;
Supply Fan (On)
V
 ariable Frequency Drive (100% Output, if applicable)
RTM Occ/Unocc Output (Unoccupied)
Outside Air Dampers (Closed)
6. Once the configuration for the components is complete,
 press the NEXT key until the LCD displays
the “Start test in __Sec.” screen. Press the + key to
designate the delay before the test is to start. This
service test will begin after the TEST START key is
pressed and the delay designated in this step has
elapsed. Press the ENTER key to confirm this choice.
7. Press the TEST START key to start the test. Remember that the delay designated in step 6 must elapse before
the fan will begin to operate.
8. With the outside air dampers fully closed and the supply
 fan operating at 100% airflow requirements,
WARNING
No Step Surface!
Do not walk on the sheet metal drain pan. Walking on
the drain pan could cause the supporting metal to
collapse, resulting in the operator/technician to fall.
Failure to follow this recommendation could result in
death or serious injury.
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Failure to disconnect power
before servicing could result in death or serious injury.
WARNING
Rotating Components!
During installation, testing, servicing and
troubleshooting of this product it may be necessary to
work with live and exposed rotating components. Have
a qualified or licensed service individual who has been
properly trained in handling exposed rotating
components, perform these tasks. Failure to follow all
safety precautions could result in rotating components
cutting and slashing technician which could result in
death or serious injury. 
						

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146RT-SVX24K-EN
measure the return static pressure at the location
determined in step 1.
9. Press the STOP key at the Human Interface Module in the
 unit control panel to stop the fan operation.
10. Open the field supplied main power disconnect switch upstream
 of the rooftop unit. Lock the disconnect
switch in the “Open” position while working on the
dampers.
Note: Gravity
 will cause the damper to close. Support or
secure the damper blades while removing the
actuator to prevent unexpected damper rotation.
11. Compare the static pressure reading to the static pressure
 ranges and linkage positions in Table43,
p. 148 for the unit size and operating CFM.
To relocate the outside air/return air connecting rod to balance
 the outside air damper pressure drop against the
return static pressure, use the following steps. If no
adjustment is necessary, proceed to step 17.
12. Remove the drive rod and swivel from the crank arm(s).
 If only one hole requires changing, loosen only
that end.
13. Manually open the return air dampers to the full open position.
14. Manually close the outside air dampers.
15. Reattach the drive rod and swivel to the appropriate hole(s).
 The length of the drive rod may need to be
adjusted to align with the new hole(s) location. If so,
loosen the lock nut on the drive rod against the swivel.
Turn the swivel “in” or “out” to shorten or lengthen the rod as necessary. For some holes, both ends of the rod
may need to be adjusted.
16. Tighten the lock nut against the swivel(s).
17. Plug the holes after the proper CFM has been established.
Figure 102. Outside air and return air damper assembly
Outside air damper level
Configuration BConfiguration A
All Top view
Jackshaft lever
Economizer Linkage Adjustment 
						

							Unit Startup
RT-SVX24K-EN147
Figure 103. Outside air and return air economizer
assembly (w/TRAQ™ dampers)
TRAQ Damper Linkage 
Top view
Jackshaft 
TRAQ damper  
						

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148RT-SVX24K-EN
Standard Unit with Energy Recovery
Wheel
Economizer Damper Adjustment - ERW units
Outside & Return Air Damper Operation
The outside air and return air damper actuators are
accessible through from the filter section of the unit. The
outside air and return air dampers have individual
actuators that are linked electronically. The actuators are
preset to 0 degrees from the factory. Refer to Table 44,
p. 150 for the appropriate actuator position for the unit and
operating airflow (CFM).
To Adjust Damper Travel
1. Drill a 1/4 hole through the unit casing up stream of the return air dampers and below the energy recovery
wheel. Use a location that will produce an accurate
reading with the least amount of turbulence. Several
locations may be necessary, and average the reading.
HIGH VOLTAGE IS PRESENT AT TERMINAL BLOCK OR
UNIT DISCONNECT SWITCH.
2. Close the disconnect switch or circuit protector switch that provides the supply power to the unit terminal
block or the unit mounted disconnect switch.
3. Turn the 115 volt control circuit switch and the 24 volt control
 circuit switch to the “On” position.
4. Open the Human Interface access door, located in the unit
 control panel, and press the SERVICE MODE key to
display the first service screen. Refer to the latest
edition of the applicable programming manual for
applications for the SERVICE TEST screens and
programming instructions.
5. Use Table 29, p. 77 to program the following system components
 for operation by scrolling through the
displays:
Supply Fan (On)
VFD
 Cmd (100%, if applicable)
RTM Occ/Unocc Output
(Unoccupied)
OA Damper Pos (0%)
Outside Air Bypass Damper Pos (0%)
Exhaust Air Bypass Damper Pos (0%)
Table 43. Standard unit (no ERW) (economizer) outside
air damper travel adjustment/pressure drop
(inches w.c.)
Damper Position
Economizer 
Linkage Set-up 1 2 3 4 5 6
Jackshaft rod end location 1 1 2 2 2 2
Damper lever  configuration A B B B B B
Damper lever 
rod end location 1 2 3 4 5 6
120-162 Ton w/Economizer (includes mist eliminator) CFM Pressure Drop (inches w.c. )
58500 0.80 1.64 2.96 - - -
54000 0.68 1.40 2.52 - - -
45500 0.48 0.99 1.79 2.22 2.62 -
42000 0.41 0.85 1.53 1.89 2.23 2.69
38000 0.34 0.69 1.25 1.55 1.83 2.20
34000 0.27 0.56 1.00 1.24 1.46 1.76
30000 0.21 0.43 0.78 0.97 1.14 1.37
90-118 Ton w/Economizer (includes mist eliminator)
CFM Pressure Drop (inches w.c. )
47250 0.81 1.88 - - - -
40500 0.60 1.39 2.62 - - -
36750 0.49 1.14 2.16 2.71 - -
31500 0.36 0.84 1.59 1.99 2.36 2.87
28000 0.28 0.66 1.25 1.57 1.87 2.27
25000 0.22 0.53 1.00 1.25 1.49 1.81
23000 0.19 0.45 0.85 1.06 1.26 1.53
Damper Position
Jackshaft rod  end location 1 1 1 2 1
Damper lever 
rod end location 1 2 3 5 4
Jackshaft rod end location 1 1 1 2 1
120-162 Ton w/TRAQ™ Damper (includes mist  eliminator)
CFM Pressure Drop ( inches w.c.)
58500 1.10 1.52 2.16 2.73
54000 0.93 1.28 1.83 2.33
45500 0.64 0.89 1.28 1.64 2.14
42000 0.54 0.75 1.09 1.40 1.83
38000 0.44 0.60 0.88 1.14 1.50
34000 0.35 0.47 0.69 0.90 1.20
30000 0.27 0.35 0.53 0.69 0.93
90-118 Ton w/TRAQ™ Damper (includes mist 
eliminator)
CFM Pressure Drop ( inches w.c.)
47250 1.37 1.89 2.72
40500 0.99 1.35 1.97 2.54
36750 0.80 1.09 1.60 2.08 2.74
31500 0.58 0.77 1.15 1.51 2.01
28000 0.46 0.59 0.89 1.17 1.58
25000 0.37 0.45 0.69 0.92 1.24
23000 0.31 0.37 0.57 0.76 1.04
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Failure to disconnect power
before servicing could result in death or serious injury. 
						

							Unit Startup
RT-SVX24K-EN149
6. Once the configuration for the components is
complete, press the NEXT key until the LCD displays
the “Start test in __Sec. screen. Press the + key to
designate the delay before the test is to start. This
service test will begin after the TEST START key is
pressed and the delay designated in this step has
elapsed. Press the ENTER key to confirm this choice.
7. Press the TEST START key to start the test. Rememberthat the delay designated in step 6 must elapse before
the fan will begin to operate.
8. With the outside air dampers fully closed and the supply
 fan operating at 100% airflow requirements,
measure the return static pressure at the location
determined in step 1.
9. Press the STOP key at the Human Interface Module in the
 unit control panel to stop the fan operation.
10. Open the field supplied main power disconnect switch upstream
 of the rooftop unit. Lock the disconnect
switch in the “Open” position while working on the
dampers.
11. Locate the static pressure reading in Table44, p. 150
and determine which damper needs to be adjusted and
the
 degree reading. Proceed to the appropriate damper
actuator procedure.
To Adjust the Outside Air Damper Actuators:
12. Remove the shaft coupling from the damper shaft by loosening the bolt and removing the retainer clip. Be
careful not to rotate the shaft.
13. Position the shaft coupling so that the indicator points to
 the degree value obtained from step 11. The shaft
coupling is adjustable in 5 degree increments.
14. Replace the retainer clip and tighten the shaft coupling on
 the shaft (120-180 in-lbs).
15. Close the disconnect switch or circuit protector switch that
 provides the supply power to the unit terminal
block or the unit mounted disconnect switch.
16. Rotate the actuator control signal dial to Auto-Adapt. The
 actuator will drive open and then closed to
determine the new open and closed positions.
17. Return the actuator control signal dial to 2-10 VDC Modulating
 input signal position. 18. Plug the holes drilled in the cabinet after the proper
airfow
 has been established.
To Adjust the Return Damper Actuators:
19. Support or secure the damper blades in the wide openposition.
Note: Gravity
 will cause the damper to close. Support or
secure the damper blades while removing the
actuator to prevent unexpected damper rotation.
20. Do not remove the shaft coupling from the shaft. R
 emove the retainer clip from the shaft coupling.
21. Unscrew the actuator bracket from the damper wall.
22. Slide the actuator down the damper shaft off of the shaf
 t coupling.
23. Rotate the actuator and reinstall the shaft coupling in the
 actuator so that the indicator points to the degree
value obtained in Step 11. The shaft coupling is
adjustable in 5 degree increments.
24. Replace the retainer clip and remove the blade stops to allow
 the blades to rotate.
25. Rotate the actuator to the original position and reattach the
 actuator bracket to the damper wall.
26. Close the disconnect switch or circuit protector switch that
 provides the supply power to the unit terminal
block or the unit mounted disconnect switch.
27. Rotate the actuator control signal dial to Auto-Adapt. The
 actuator will drive open and then closed to
determine the new open and closed positions.
28. Return the actuator control signal dial to the factory set input
 signal position.
29. Plug the holes drilled in the cabinet after the proper airfow
 has been established.
WARNING
Rotating Components!
During installation, testing, servicing and
troubleshooting of this product it may be necessary to
work with live and exposed rotating components. Have
a qualified or licensed service individual who has been
properly trained in handling exposed rotating
components, perform these tasks. Failure to follow all
safety precautions could result in rotating components
cutting and slashing technician which could result in
death or serious injury. 
						

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150RT-SVX24K-EN
Table 44. Standard units with ERW — field measured plenum pressureLow CFM ERW — 90-162 Tons
90/100 Ton Low CFM ERW - Field measured plenum pressure (inches wc)
OA Actuator Reading [Degrees]  RA Actuator Reading [Degrees]
60
50
40
30
20
10
0
10
20
30
35
40
45
50
CFM
Econ
TRAQ
Econ
TRAQ
Econ
TRAQ
Econ
TRAQ
Econ
TRAQ
Econ
TRAQ
E/T
E/T
E/T
E/T
E/T
E/T
E/T
E/T
16000 1.29 — 0.87 1.52 0.71 1.05 0.64 0.84 0.60 0.64 0.58 0.63 0.46 0.45 0.43 0.41 0.38 0.35 0.32 0.20
20000 1.99 — 1.34 2.34 1.09 1.62 0.98 1.28 0.92 0.97 0.89 0.96 0.69 0.68 0.65 0.62 0.57 0.52 0.48 0.29
25000 — — 2.07 — 1.68 2.49 1.50 1.97 1.41 1.49 1.36 1.47 1.04 1.02 0.99 0.93 0.86 0.78 0.71 0.42
30000 — — 2.94 — 2.39 — 2.13 2.79 1.99 2.09 1.93 2.08 1.46 1.43 1.37 1.30 1.19 1.08 0.98 0.56
33000 ———— 2.86 — 2.54 — 2.38 2.50 2.30 2.48 1.73 1.70 1.63 1.54 1.41 1.28 1.15 0.65
36000 —————— 3.00 — 2.80 2.94 2.71 2.92 2.02 1.98 1.91 1.79 1.64 1.48 1.34 0.74
40000 ———————————— 2.46 2.41 2.32 2.18 1.98 1.79 1.61 0.87105/118 Ton Low CFM ERW - Field measured plenum pressure (inches wc)
OA Actuator Reading [Degrees]  RA Actuator Reading [Degrees]
60
50
40
30
20
10
0
10
20
30
35
40
45
50
CFM
Econ
TRAQ
Econ
TRAQ
Econ
TRAQ
Econ
TRAQ
Econ
TRAQ
Econ
TRAQ
E/T
E/T
E/T
E/T
E/T
E/T
E/T
E/T
19000 1.80 — 1.22 2.12 0.99 1.46 0.89 1.16 0.83 0.88 0.81 0.88 0.63 0.62 0.59 0.56 0.52 0.48 0.44 0.27
23000 2.63 — 1.76 — 1.44 2.12 1.29 1.68 1.21 1.27 1.17 1.26 0.90 0.88 0.85 0.80 0.74 0.68 0.62 0.37
28000 — — 2.57 — 2.09 — 1.86 2.45 1.74 1.84 1.69 1.82 1.28 1.25 1.21 1.14 1.05 0.95 0.86 0.50
33000 ———— 2.86 — 2.54 2.38 2.50 2.30 2.48 1.73 1.70 1.63 1.54 1.41 1.28 1.15 0.65
38000 ———————————— 2.24 2.20 2.11 1.98 1.81 1.64 1.48 0.81
43000 ———————————— 2.80 2.74 2.64 2.47 2.25 2.03 1.83 0.97
45000 ———————————— 3.04 2.98 2.86 2.68 2.44 2.20 1.97 1.04120/128 Ton Low CFM ERW - Field measured plenum pressure (inches wc)
OA Actuator Reading [Degrees]  RA Actuator Reading [Degrees]
60
50
40
30
20
10
0
10
20
30
35
40
45
50
CFM
Econ
TRAQ
Econ
TRAQ
Econ
TRAQ
Econ
TRAQ
Econ
TRAQ
Econ
TRAQ
E/T
E/T
E/T
E/T
E/T
E/T
E/T
E/T
21000 1.54 — 1.08 1.69 0.90 1.08 0.82 0.89 0.78 0.87 0.76 0.75 0.58 0.56 0.54 0.50 0.44 0.39 0.34 0.14
26000 2.33 — 1.62 2.56 1.35 1.62 1.23 1.33 1.16 1.30 1.13 1.11 0.84 0.82 0.78 0.72 0.64 0.56 0.49 —
31000 — — 2.26 — 1.88 2.25 1.70 1.85 1.61 1.80 1.56 1.53 1.15 1.12 1.07 0.98 0.87 0.75 0.65 —
36000 — — 2.99 — 2.48 2.98 2.24 2.44 2.11 2.37 2.05 2.00 1.50 1.46 1.38 1.27 1.11 0.96 0.81 —
41000 —————— 2.85 — 2.68 — 2.60 2.54 1.89 1.84 1.74 1.59 1.39 1.19 1.00 —
46000 ———————————— 2.31 2.24 2.12 1.93 1.68 1.42 1.19 —
51000 ———————————— 2.77 2.69 2.54 2.31 2.00 1.69 1.40 —
54000 ———————————— 3.16 3.06 2.89 2.64 2.29 1.94 1.61 —continued on next page