Trane Intellipak 2 Service Manual

							General Information
RT-SVX24K-EN21
prevent over/under pressurization. The overall scheme
will remain very similar to VAV units with Space Pressure
Control with the exception of the dynamic Exhaust Enable
Setpoint.
For SZVAV an Exhaust Enable Setpoint must be selected
during the 100% Fan Speed Command. Once selected, the
difference between the Exhaust Enable Setpoint and
Design OA Damper Minimum Position at 100% Fan Speed
Command will be calculated.The difference calculated will
be used as an offset and added to the Active Building
Design OA Minimum Position Target in order to calculate
the dynamic Exhaust Enable Target, which will be used
throughout the Supply Fan Speed/OA Damper Position
range.
The Exhaust Enable Target could be above or below the Active Building Design OA Minimum Position TargetSetpoint, based on the Active Exhaust Enable Setpoint
being set above or below the Building Design Minimum
Position at 100% Fan Speed Command. Note that an
Exhaust Enable Setpoint of 0% will result in the same effect
on Exhaust Fan control as on VAV applications with and
without Statitrac.
Occupied Cooling Operation
For normal cooling operation, cooling capacity will be
staged or modulated in order to meet the calculated
discharge air target setpoint. If the current active cooling
capacity is controlling the discharge air within the
deadband, no additional cooling capacity change will be
requested. As the Discharge Air Temperature rises above
the deadband, the algorithm will request additional
capacity as required (additional compressors or
economizer). As the Discharge AirTemperature falls below
the deadband, the algorithm will request a reduction in
active capacity.
Default Economizer Operation
By default, the unit will be setup to optimize the minimum
supply fan speed capability during Economizer Only
operation. If the economizer is able to meet the demand
alone, due to desirable ambient conditions, the supply fan
speed will be allowed to increase above the minimum
prior to utilizing mechanical cooling if discharge air
setpoint falls below the discharge air Lower Limit
(Cooling) setpoint.
Unoccupied Mode
In Unoccupied mode the unit will utilize setback setpoints,
0% Minimum OA Damper position, and Auto Fan Mode
operation as on normal CV units. The Supply Fan speed,
and cooling and modulating types of heat, will be
controlled to the discharge air target setpoint as is done
during occupied periods. The Supply fan speed during
staged heat control will be forced to 100% as on normal CV
units.
Occupied Heating Operation
Occupied heating operation has two separate control
sequences; staged and modulated. All staged heating
types will drive the supply fan to maximum flow and stage
heating to control to the Zone Heating Setpoint. For units
with Hydronic and Gas heat, modulated SZVAV Heating.
On an initial call for heating, the supply fan will drive to the
minimum heating airflow.
On an additional call for heating, the heat will control in
order to meet the calculated discharge air target setpoint.
As the load in the zone continues to request heat operation, the supply fan will ramp-up while the control
maintains the heating discharge air temperature. Heating
can be configured for either the energy saving SZVAV
Heating solution as described above, or the traditional,
less efficient CV Heating solution.
Compressor (DX) Cooling
Compressor control and protection schemes will function
identical to that of a traditional unit. Normal compressor
proving and disable input monitoring will remain in effect
as well as normal 3-minute minimum on, off, and inter-
stage timers. Also, all existing head pressure control
schemes will be in effect.
Cooling Sequence
If the control determines that there is a need for active
cooling capacity in order to meet the calculated discharge
air target setpoint, once supply fan proving has been
made, the unit will begin to stage compressors
accordingly. Note that the compressor staging order will
be based on unit configuration and compressor lead/lag
status.
Once the discharge air target setpoint calculation has
reached the Minimum Setpoint and compressors are
being utilized to meet the demand, as the discharge air
target setpoint value continues to calculate lower the
algorithm will begin to ramp the supply fan speed up
toward 100%. Note that the supply fan speed will remain
at the compressor stage’s associated minimum value (as
described below) until the discharge air target setpoint
value is calculated below the discharge air temperature
Minimum Setpoint (limited discharge air target setpoint).
As the cooling load in the zone decreases the zone cooling algorithm will reduce the speed of the fan down to
minimum per compressor stage and control the
compressors accordingly. As the compressors begin to
de-energize, the supply fan speed will fall back to the
Cooling Stage’s associated minimum fan speed, but not
below. As the load in the zone continues to drop, cooling
capacity will be reduced in order to maintain the discharge
air within the ± ½ discharge air target deadband.
Fault Detection and Diagnostics
Fault Detection of the Outdoor Air Damper will be
evaluated based on the commanded position of the
damper compared to the feedback position of the damper. 
						

							General Information
22RT-SVX24K-EN
The damper is commanded to a position based on a 2-10
VDC signal. If the Damper position is outside of ±10% of the commanded position, a diagnostic is generated.
Unit Not Economizing when it should be:
The Unit is operating in Cooling Mode, Economizing is enabled and/or Mechanical Cooling is enabled. If the
Commanded Economizer Position is greater than Current
Economizer Feedback Position + 10% for 5 continuous
minutes, Unit Not Economizing when it should be
diagnostic is generated.
Unit Economizing when it should not be:
The unit is operating in Cooling Mode, Economizing is enabled and or Mechanical Cooling is enabled. If the
commanded Economizer Position is less than the current
Economizer Feedback Position - 10% for 5 continuous
minutes, Unit Economizing When it should not be
diagnostic is generated.
Outdoor Air Damper Not Modulating
The unit is operating in Ventilation Only Mode - not attempting to Economize and the Commanded Damper
Position is greater than the Current Damper Feedback
Position + 10% for 5 continuous minutes, Outdoor Air
Damper Not Modulating diagnostic is generated.
Excessive Outdoor Air
The unit is operating in Ventilation Only Mode - not attempting to Economize and the Commanded Damper
Position is less than the Current Damper Feedback Position
- 10% for 5 continuous minutes. Excessive Outdoor Air
diagnostic is generated.
To change the Economizer Control Function to dry bulb, go to the Configuration Menu on the Human Interface Module
and set Comparative Enthalpy to Not Installed.This
allows the user to select dry bulb under the Economizer
Control Function which is a Submenu of the Setup Menu.
For additional instructions please see the Programming
and Troubleshooting Guide. 
						

							RT-SVX24K-EN23
Unit Clearances
Figure 10. Minimum required clearance(a)
(a) Unit drawing is representative only and may not accurately depict all mo\
dels.
Filters
VFDVFDHeat
Rtn/Exh
MtrRtn/Exh
VFDEvp(F)Fltr(F)SupMtrSup
VFD
Fltr(R)Evp(R)
Heat(L&R
Option
Option
As Req. As Req. As Req.
Std
Std Std
Std
Blank Section
Final 
Filter
Fnl
Fltr 
As Req.
Fnl
Fltr  As Req.
Ctrl Box(L&R)Std
OutsideAir
OutsideAir
  Exhaust
Condenser
Condenser
Exh
AH  R
CBox
AH  LCond L
Cond R
Left Side
Table 4. Minimum required clearance
Unit Option Selection (Door Swing Ft. and In.)
Standard VFD Two-side Access
Door Location Availability 90-118 120-162 Return/ 
Exhaust Supply Heat Reheat 90-118 120-162  Final 
Filter Energy 
Recovery
Exhaust/Ret Motor Std 2 2 2 2 * * * * * * *
Exhaust/Ret VFD As Req. * * 2 2 * * * * * *
ERW Fltr
(a) (L & R) (F) Option * * * * * * * * * 2 2
ERW Fltr(a) (L & R) (R) Option * * * * * * * * * 2 2
Filter (Front) Std 2 8 2 8 * * * * * * *
Filter (Rear) Option * * * * * * 2 2 2 8 *
Evap (Front) Std 2 2 2 2 * * * * * * *
Evap (Rear) Std 2 8 * * * * * * * *
or Evap (Rear) Option * * * * * 2 2 * 2 2 *
Supply Motor Std 2 8 2 8 * * * * * * *
Supply VFD As Req. * * * 2 2 * * * * *
Heat (Left & Right) As Req. * * * * 2 2 * * * * Final Filter (Front) As Req. * * * * * * * * 2 2
Final Filter (Rear) As Req. * * * * * * * * 2 2
Control Box (L & R) Std 3 2 3 2 * * * * * * *
Minimum Required Clearance (Ft.)
AH_L AH_R Exh Cond_L Cond_R Control 
Box
8 88 8 8 6
(a) See Unit Dimensions for Energy Recovery Wheel location. 
						

							Unit Clearances
24RT-SVX24K-EN
Notes:
 1. Stagger units to minimize span deflection which deters sound 
transmission and to maximize proper diffusion of the exhaust air 
before it reaches the adjacent unit outside air intake.
 2. Cooling tower should be 5 feet above or 20 feet away from the outside 
air intake. For additional information, see 2007 ASHRAE Handbook: 
HVAC Applications, page 44.4.
Figure 11. Multiple unit placement
Outdoor
Air Intake
Outdoor
Air Intake
Exhaust Air 
Outdoor
Air Intake
Outdoor
Air Intake
Exhaust Air 
Outdoor
Air Intake
Outdoor
Air Intake
Exhaust Air 
Minimum distance between units must be 16’! 
						

							RT-SVX24K-EN25
Dimensional Data
Figure 12. Unit Top/Front View
1-1/4 NPT. DRAIN
2X TYP. LEFT & RIGHT SIDES OF UNIT
Detail A 
						

							Dimensional Data
26RT-SVX24K-EN
Table 5. Unit dimensions (in.)—one-piece unit air-cooled
ONE-PIECE Dimensions without Energy Recovery Wheel (ERW)
Tonnage  Blank 
Section Unit Dimensions Lifting Lug Locations
Unit Width
Air Handler Side Condenser 
Side
A B C1 C2 C3 D1 M N
90  None 437  3/16 159 15/16 66       252 14/16 N/A 27 11/16 139 13/16 143  8/16
90  4 ft 485  6/16 159 15/16 66       252 14/16 N/A 54  2/16 139 13/16 143  8/16
90 8 ft 533  9/16 159 15/16 66       252 14/16 N/A 54  2/16 139 13/16 143  8/16
105 None 455  3/16 159 15/16 66       252 14/16 N/A 27 11/16 139 13/16 143  8/16
105 4 ft 503  6/16 159 15/16 66       252 14/16 N/A 54  2/16 139 13/16 143  8/16
105 8 ft 551  9/16 159 15/16 66       252 14/16 N/A 54  2/16 139 13/16 143  8/16
120-150 (All  Units Except  High Heat 
Gas Models)  None 528 15/16 197  1/16 66       269  6/16 N/A 63  2/16 139 13/16 143  8/16
120-150 (All  Units Except  High Heat 
Gas Models)  4 ft 577  2/16 197  1/16 66       269  6/16 N/A 63  2/16 139 13/16 143  8/16
120-150 
(High Heat 
Gas Models  Only)  None 540 15/16 197  1/16 66       269  6/16 N/A 63  2/16 139 13/16 143  8/16
Tonnage 
Blank 
Section Unit Height Return Fan
Exhaust 
Fan
OP RJK
90-150  None 103 12/16 97  9/16 103  7/16 29  3/16 17      
90-150  4 ft 103 12/16 97  9/16 103  7/16 29  3/16 17      
90-150  8 ft 103 12/16 97  9/16 103  7/16 29  3/16 17      
ONE-PIECE Dimensions with Energy Recovery Wheel
Tonnage  Blank 
Section Unit Dimensions Lifting Lug Locations
Unit Width
Air Handler Side Condenser 
Side
A B C1 C2 C3 D1 M N
90  None 533  9/16 256  5/16 66       201  1/16 349  4/16 27 11/16 139 13/16 143  8/16
90  4 ft 581 13/16 256  5/16 66       201  1/16 349  4/16 54  2/16 139 13/16 143  8/16
105 None 551  9/16 256  5/16 66       201  1/16 349  4/16 27 11/16 139 13/16 143  8/16
105 4 ft 599 13/16 256  5/16 66       201  1/16 349  4/16 54  2/16 139 13/16 143  8/16
Unit Height Return FanExhaust 
Fan
Tonnage  Blank 
Section O PRJK
90  None 103 12/16 97  9/16 103  7/16 N/A 17
90  4 ft 103 12/16 97  9/16 103  7/16 N/A 17
105 None 103 12/16 97  9/16 103  7/16 N/A 17
105 4 ft 103 12/16 97  9/16 103  7/16 N/A 17 
						

							Dimensional Data
RT-SVX24K-EN27
Table 6. Unit dimensions (In.)—two-piece unit air-cooled
 TWO-PIECE Dimensions without Energy Recovery Wheel (ERW)
Tonnage  Blank 
Section Unit Dimensions Lifting Lug Locations
Air Handler Side
A B E F C1 C2 C3 C4
90  None 454  4/16 159 15/16 330 14/16 121  6/16 66       252 14/16 N/A N/A
90  4 ft 502  7/16 159 15/16 379  1/16 121  6/16 66       252 14/16 368  6/16 N/A
90 8 ft 550 11/16 159 15/16 427  4/16 121  6/16 66       252 14/16 416 10/16 N/A
105 None 472  4/16 159 15/16 330 14/16 139  6/16 66       252 14/16 N/A N/A
105 4 ft 520  7/16 159 15/16 379  1/16 139  6/16 66       252 14/16 368  6/16 N/A
105 8 ft 568 11/16 159 15/16 427  4/16 139  6/16 66       252 14/16 416 10/16 N/A
120-150 
(All Units 
Except High  Heat Gas Models)  None 546       197  1/16 395 10/16 148  6/16 66       269  6/16 384 15/16 N/A
120-150 
(All Units 
Except High  Heat Gas Models)  4 ft 594  4/16 197  1/16 443 13/16 148  6/16 66       269  6/16 433  2/16 N/A
120-150 
(All Units 
Except High  Heat Gas Models)  8 ft 642  7/16 197  1/16 492  1/16 148  6/16 66       269  6/16 481  6/16 N/A
120-150 
(High Heat 
Gas Models  Only) None 558       197  1/16 407 10/16 148  6/16 66       269  6/16 396 15/16 N/A
Tonnage 
Blank 
Section Lug Locations
Unit Width Unit Height
Condenser Side
D1 D2 M N O P R
90  None 16       112  7/16 139 13/16 143  8/16 103 12/16 97  9/16 103  7/16
90  4 ft 16       112  7/16 139 13/16 143  8/16 103 12/16 97  9/16 103  7/16
90 8 ft 16       112  7/16 139 13/16 143  8/16 103 12/16 97  9/16 103  7/16
105 None 16       130  7/16 139 13/16 143  8/16 103 12/16 97  9/16 103  7/16
105 4 ft 16       130  7/16 139 13/16 143  8/16 103 12/16 97  9/16 103  7/16
105 8 ft 16       130  7/16 139 13/16 143  8/16 103 12/16 97  9/16 103  7/16
120-150 
(All Units 
Except High  Heat Gas Models)  None 16       139  7/16 139 13/16 143  8/16 103 12/16 97  9/16 103  7/16
120-150 
(All Units 
Except High  Heat Gas Models)  4 ft
16       139  7/16 139 13/16 143  8/16 103 12/16 97  9/16 103  7/16
120-150 
(All Units 
Except High  Heat Gas Models)  8 ft
16       139  7/16 139 13/16 143  8/16 103 12/16 97  9/16 103  7/16
120-150 
(High Heat 
Gas Models  Only) None 16       139  7/16 139 13/16 143  8/16 103 12/16 97  9/16 103  7/16
Continued on next page 
						

							Dimensional Data
28RT-SVX24K-EN
Tonnage Blank 
Section Return Fan Exhaust Fan
JK
90  None 29  3/16 17
90  4 ft 29  3/16 17
90 8 ft 29  3/16 17
105 None 29  3/16 17
105 4 ft 29  3/16 17
105 8 ft 29  3/16 17
120-150 
(All Units 
Except High  Heat Gas Models)  None 29  3/16
17
120-150 
(All Units 
Except High  Heat Gas Models)  4 ft 29  3/16
17
120-150 
(All Units 
Except High  Heat Gas Models)  8 ft 29  3/16
17
120-150 
(High Heat 
Gas Models  Only) None 29  3/16
17
 TWO-PIECE Dimensions with Energy Recovery Wheel (ERW)
Tonnage  Blank 
Section Unit Dimensions Lifting Lug Locations
Air Handler Side
A B E F C1 C2 C3 C4
90  None 550 11/16 256  5/16 427  5/16 121  6/16 66       201  1/16 349  4/16 N/A
90  4 ft 598 14/16 256  5/16 475  8/16 121  6/16 66       201  1/16 349  4/16 464 13/16
90 8 ft 647  2/16 256  5/16 523 12/16 121  6/16 66       201  1/16 349  4/16 513      
105 None 568 11/16 256  5/16 427  5/16 139  6/16 66       201  1/16 349  4/16 N/A
105 4 ft 616 14/16 256  5/16 475  8/16 139  6/16 66       201  1/16 349  4/16 464 13/16
105 8 ft 665  2/16 256  5/16 523 12/16 139  6/16 66       201  1/16 349  4/16 513      
120-150 
(All Units 
Except High  Heat Gas 
Models)  None 642  7/16 293  8/16 492  1/16 148  6/16 66       238  5/16 365  5/16 480 14/16
120-150 
(All Units 
Except High  Heat Gas Models)  4 ft 690 10/16 293  8/16 540  4/16 148  6/16 66       238  5/16 365  5/16 529  2/16
120-150 
(All Units 
Except High  Heat Gas Models)  8 ft 738 14/16 293  8/16 588  8/16 148  6/16 66       238  5/16 365  5/16 577  5/16
120-150 
(High Heat 
Gas Models  Only) None 654  7/16 293  8/16 504  1/16 148  6/16 66       238  5/16 365  5/16 492 14/16
Continued on next page
Table 6. Unit dimensions (In.)—two-piece unit air-cooled (continued) 
						

							Dimensional Data
RT-SVX24K-EN29
Tonnage Blank 
Section Lug Locations
Unit Width
Condenser Side Unit Height
D1 D2 M N O P R
90  None 16       112  7/16 139 13/16 143  8/16 103 12/16 97  9/16 103  7/16
90  4 ft 16       112  7/16 139 13/16 143  8/16 103 12/16 97  9/16 103  7/16
90 8 ft 16       112  7/16 139 13/16 143  8/16 103 12/16 97  9/16 103  7/16
105 None 16       130  7/16 139 13/16 143  8/16 103 12/16 97  9/16 103  7/16
105 4 ft 16       130  7/16 139 13/16 143  8/16 103 12/16 97  9/16 103  7/16
105 8 ft 16       130  7/16 139 13/16 143  8/16 103 12/16 97  9/16 103  7/16
120-150 
(All Units 
Except High  Heat Gas Models)  None 16       139  7/16 139 13/16 143  8/16 103 12/16 97  9/16 103  7/16
120-150 
(All Units 
Except High  Heat Gas Models)  4 ft
16       139  7/16 139 13/16 143  8/16 103 12/16 97  9/16 103  7/16
120-150 
(All Units 
Except High  Heat Gas Models)  8 ft
16       139  7/16 139 13/16 143  8/16 103 12/16 97  9/16 103  7/16
120-150 
(High Heat 
Gas Models  Only) None 16       139  7/16 139 13/16 143  8/16 103 12/16 97  9/16 103  7/16
Tonnage 
Blank 
Section Return Fan Exhaust Fan
JK
90 None N/A 17  
90  4 ft N/A 17  
90 8 ft N/A 17  
105 None N/A 17  
105 4 ft N/A 17  
105 8 ft N/A 17  
120-150 
(All Units 
Except High  Heat Gas Models)  None N/A
17  
120-150 
(All Units 
Except High  Heat Gas Models)  4 ft N/A
17  
120-150 
(All Units 
Except High  Heat Gas Models)  8 ft N/A
17  
120-150 
(High Heat 
Gas Models  Only) None N/A
17  
Table 6. Unit dimensions (In.)—two-piece unit air-cooled (continued) 
						

							Dimensional Data
30RT-SVX24K-EN
Table 7. Unit dimensions (in.)—two-piece unit evaporative condenser
 TWO-PIECE Dimensions without Energy Recovery Wheel (ERW)
Tonnage  Blank 
Section Unit Dimensions Lifting Lug Locations
Air Handler Side
A B E F C1 C2 C3 C4
100-118  None 475  8/16 159 15/16 330 14/16 142 10/16 66       252 14/16 N/A N/A
100-118  4 ft 523 12/16 159 15/16 379  1/16 142 10/16 66       252 14/16 368  6/16 N/A
100-118  8 ft 571 15/16 159 15/16 427  5/16 142 10/16 66       252 14/16 416 10/16 N/A
128-162 
(All Units 
Except High  Heat Gas Models)  None 540  5/16 197  1/16 395 10/16 142 10/16 66       269  6/16 384 15/16 N/A
128-162 
(All Units 
Except High  Heat Gas Models)  4 ft 588  8/16 197  1/16 443 14/16 142 10/16 66       269  6/16 433  2/16 N/A
128-162 
(All Units 
Except High  Heat Gas Models)  8 ft 636 11/16 197  1/16 492  1/16 142 10/16 66       269  6/16 481  6/16 N/A
128-162 
(High Heat 
Gas Models 
Only) None 552 5/16 197  1/16 407 10/16 142 10/16 66       269  6/16 396 15/16 N/A
Tonnage 
Blank 
Section Lug Locations
Condenser Side Unit Width Unit Height
D1 D2 M N O P R
100-118  None 16       133 11/16 139 13/16 143  8/16 103 12/16 97  9/16 102 12/16
100-118  4 ft 16       133 11/16 139 13/16 143  8/16 103 12/16 97  9/16 102 12/16
100-118  8 ft 16       133 11/16 139 13/16 143  8/16 103 12/16 97  9/16 102 12/16
128-162 
(All Units 
Except High  Heat Gas Models)  None 16       133 11/16 139 13/16 143  8/16 103 12/16 97  9/16 102 12/16
128-162 
(All Units 
Except High  Heat Gas Models)  4 ft 16       133 11/16 139 13/16 143  8/16 103 12/16 97  9/16 102 12/16
128-162 
(All Units 
Except High  Heat Gas Models)  8 ft 16       133 11/16 139 13/16 143  8/16 103 12/16 97  9/16 102 12/16
128-162 
(High Heat 
Gas Models  Only) None 16       133 11/16 139 13/16 143  8/16 103 12/16 97  9/16 102 12/16
Continued on next page