EarthLinked TXV Kit User manual

TXV–CLP-KIT (07/15) Copyright 2015 Earthlinked Technologies, Inc.
EarthLinked® TXV Kit
Installation Manual
for
Classic and Prime Systems

TXV-CLP-KIT (07/15)
Model Nomenclature
Disclaimer
Proper installation and service of EarthLinked®Heating and Cooling System Components is
essential to reliable performance. All EarthLinked®components must be installed and serviced by a
technician authorized by Earthlinked Technologies. Installation and service must be made in
accordance with the instructions set forth in this manual. Failure to provide installation and service
by an authorized installer consistent with this manual will void the limited warranty coverage for the
system.
EarthLinked® Technologies shall not be liable for any defect, unsatisfactory performance, damage
or loss, whether direct or consequential, relative to the design, manufacture, construction,
application or installation of the field specified components.
Earthlinked Technologies, Inc.
4151 South Pipkin Road
Lakeland, Florida 33811
tel. [phone] ● fax [phone]
[e-mail] ● www.earthlinked.com
CSI # 23 80 00

TXV–CLP-KIT (07/15) Page 3
Table of Contents
Model Nomenclature ........................................................................................................2
Safety..................................................................................................................................5
Equipment Manuals..........................................................................................................5
Component Matching.......................................................................................................6
Air Handler and Cased Coil Placement.........................................................................7
TXV Kit Installation – ETI Air Handlers..........................................................................8
TXV Kit Installation – ETI Cased Coils........................................................................18
TXV Kit Installation: Non-ETI Brand Air Handler or Cased Coil..............................27

TXV–CLP-KIT (07/15) Page 4
List of Figures
Figure 1. Component Matching Table..............................................................................................6
Figure 2. General Layout of System Components...........................................................................7
Figure 3. TXV Control......................................................................................................................8
Figure 4a. TXV Control Installed on Vertical (upflow/downflow) Air Handler.....................................9
Figure 4b. TXV Control installed next to Vertical (upflow/downflow) Air Handler............................10
Figure 4c. TXV Control Installed next to Horizontal Left Flow Air Handler......................................11
Figure 4d. TXV Control Installed next to Horizontal Right Flow Air Handler ................................... 11
Figure 4e. TXV Control Box Dimensions........................................................................................12
Figure 4f. TXV Control Box mounting Positions .............................................................................13
Figure 5. Positioning the Pressure Equalizer Tee .........................................................................14
Figure 6. Thermal Bulb Positioning...............................................................................................15
Figure 7. Clamping the Thermal Bulb............................................................................................16
Figure 8. Insulating the Thermal Bulb ...........................................................................................16
Figure 9. TXV Liquid Line Connections.........................................................................................17
Figure 10. TXV Control..................................................................................................................18
Figure 11a. TXV Control installed near Cased Coil (Vertical Application)...................................... 19
Figure 11b. TXV Control installed near Cased Coil (Horizontal Application)..................................20
Figure 11c. TXV Control Box Dimensions.....................................................................................21
Figure 11d. TXV Control Box Mounting Positions .........................................................................22
Figure 12. Positioning the Pressure Equalizer Tee .......................................................................23
Figure 13. Thermal Bulb Positioning.............................................................................................24
Figure 14. Clamping the Thermal Bulb..........................................................................................25
Figure 15. Insulating the Thermal Bulb .........................................................................................25
Figure 16. TXV Liquid Line Connections.......................................................................................26
Figure 17. Typical Air Handler/Cased Coil After Conversion.........................................................28

TXV–CLP-KIT (07/15) Page 5
Safety
Warning, Caution and Important notices appear throughout the manual. Read these items
carefully before attempting installation, servicing or troubleshooting the equipment.
Equipment Manuals
The following is a listing of the equipment installation manuals that are provided with each
component specified for this EarthLinked®system.
Classic Series Models SC, SD, and SDH Quick-Start Instructions
Prime Series Models PS, PSD, and PSDH Quick-Start Instructions
Classic Series Air Handler Installation Manual (AVS-ACL-IM)
Prime Select Series Air Handler Installation Manual (AVS-APS-IM)
Classic and Prime Select Series Cased Coil Installation Manual (CCS-ACLPS-IM)
CAUTION!
Indicates a potentially hazardous situation or an unsafe practice, which
if not avoided, may result in injury, or equipment or property damage.
IMPORTANT!
Notification of installation, operation or maintenance information which
is important, but which is not hazardous.
IMPORTANT!
Read and follow all installation instructions in these manuals,
appropriate for the EarthLinked®system being installed, BEFORE
initiating the Start-Up procedure.
WARNING!
Indicates a hazardous situation, which if not avoided will result in
serious injury or death, or equipment or property damage.

TXV–CLP-KIT (07/15) Page 6
Component Matching
Upon receipt of the TXV Kit carefully check the model number against the bill of lading.
The TXV Kit must be matched with the appropriately sized compressor unit. See Figure 1 below for
correctly matched components.
COMPONENT MATCHING TABLE
COMPRESSOR UNIT
NOMINAL CAPACITY,
BTUH
TXV KIT
MODEL
-024 (24,000) TXV-2430CE
-030 (30,000) TXV-2430CE
-036 (36,000)
TXV-3672CE
-040 (40,000) TXV-3672CE
-042 (42,000) TXV-3672CE
-048 (48,000) TXV-3672CE
-050 (50,000) TXV-3672CE
-054 (54,000) TXV-3672CE
-060 (60,000)
TXV-3672CE
Figure 1. Component Matching Table

TXV–CLP-KIT (07/15) Page 7
Air Handler and Cased Coil Placement
Guidelines for the air handler and cased coil placement relative to the compressor unit and other
EarthLinked®system components are shown in Figure 2.
Figure 2. General Layout of System Components

TXV–CLP-KIT (07/15) Page 8
TXV Kit Installation – ETI Air Handlers
Air handlers that are intended for HEAT/COOL applications, are shipped with the matching TXV
Kit that must be field installed to enable operation of the system in the cool mode.
The following procedure is for the installation of the TXV Kit which must be done prior to making the
line set connections to the air handler.
Figure 3 illustrates the TXV Kit as shipped with the external parts for field installation identified. In
Figure 3, the pressure equalizer tubing and suction line Tee are shown connected to the control box
for illustration purposes. These parts are shipped with the TXV control box and are field assembled
to the control box and to the suction line. The TXV (thermal expansion valve), CAV (cooling assist
valve) and interconnecting tubing are located inside the control box to ensure performance.
Figure 3. TXV Control

TXV–CLP-KIT (07/15) Page 9
The TXV control box is field positioned external to the vertical (upflow or downflow) air handler and
fastened to (1) the air handler as shown in Figure 4a,or (2) on a solid mounting surface immediately
adjacent to the air handler as shown in Figure 4b. Locate the TXV control box to allow a service
access of at least 12 inches in front of the box to adjust the TXV control.
Figure 4a. TXV Control Installed on Vertical (upflow/downflow) Air Handler
Important!
The TXV control box must be located no more than 3-1/2 feet from the suction
tube stub out on the air handler. The TXV control box must be mounted above
the air handler tubing stub outs as shown.

TXV–CLP-KIT (07/15) Page 10
Figure 4b. TXV Control installed next to Vertical (upflow/downflow) Air Handler
For horizontal air handler applications (left or right air flow), the TXV control box is field positioned
external to the air handler and can be fastened to (1) a cabinet side surface or (2) on a solid
mounting surface immediately adjacent to the air handler as shown typically in Figures 4c and 4d.
Important!
The TXV control box must be located no more than 3-1/2 feet from the suction
tube stub out on the air handler. The TXV control box must be mounted above
the air handler tubing stub outs as shown.

TXV–CLP-KIT (07/15) Page 11
Figure 4c. TXV Control Installed next to Horizontal Left Flow Air Handler
Figure 4d. TXV Control Installed next to Horizontal Right Flow Air Handler

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For mounting purposes, the physical dimensions for the TXV Control Box are shown in
figure 4e. The preferred mounting position for the TXV Control Box is vertical with the
liquid line tube connections on the bottom. However, as shown in Figure 4f, the Control
Box can be mounted from vertical to any angle up to 90 degrees (horizontal).
Figure 4e. TXV Control Box Dimensions

TXV–CLP-KIT (07/15) Page 13
Figure 4f. TXV Control Box mounting Positions
The following steps and positioning requirements apply to installing the TXV Control to the air
handler for vertical and horizontal applications. The vertical installation provides an illustrated
example.

TXV–CLP-KIT (07/15) Page 14
Step 1: Relieve the nitrogen holding charge on the air handler. Locate the TXV Control box within
the 3-1/2 feet of the suction line stub out on the air handler. If the TXV control box is to be fastened
to the air handler, be sure not to drill into the air handler internal components. Fasten the TXV
control box above the suction line stub out.
Step 2: Position the Pressure Equalizer Tee on the suction tube at least 10 inches downstream
from the 90°ell, as shown in Figure 5. Remove the core from Schrader valve on the Tee.
Figure 5. Positioning the Pressure Equalizer Tee

TXV–CLP-KIT (07/15) Page 15
Step 3: The Thermal Bulb must be positioned and clamped to the suction tube 6 inches
downstream from the 90° elbow as shown in the example illustrated in Figure 6. The Thermal
Bulb and suction tube must be horizontal regardless of the air handler application (vertical or
horizontal).
The Thermal Bulb must be positioned at the 3:00, 4:00, 8:00 or 9:00 positions on the suction tube
as illustrated in Figure 6.
Figure 6. Thermal Bulb Positioning
Step 4: Clamp the thermal bulb firmly against the clean suction tube and parallel to it, as shown in
Figure 7.
Isolate the Thermal Bulb from with a cold wet cloth while Nitrogen brazing the joints on the suction
line. After the suction line has cooled, apply the supplied cork tape insulation around the Thermal
Bulb to completely isolate it from the surrounding air, as shown in Figure 8.

TXV–CLP-KIT (07/15) Page 16
Figure 7. Clamping the Thermal Bulb
Figure 8. Insulating the Thermal Bulb

TXV–CLP-KIT (07/15) Page 17
Step 5: Measure and cut copper tubing to connect the liquid line from the TXV control box to the
liquid line stub out on the air handler as shown in Figures 3 and 9. Run the other liquid line from
the connection on the TXV control box to the compressor unit, also shown in Figures 3 and 9.
Nitrogen braze the joints.
Step 6: Connect the pressure equalizer tube to the Schrader valve. Do not install the core. Tighten
the flare connection firmly. Wrap the liquid and vapor tubing including the liquid line tubing to
the TXV control box, with Armaflex®, Insul-Tube®or equivalent insulation of at least ½” wall
thickness, between the air handler and compressor unit.
Figure 9. TXV Liquid Line Connections

TXV–CLP-KIT (07/15) Page 18
TXV Kit Installation – ETI Cased Coils
Cased Coils that are intended for HEAT/COOL applications, are shipped with the matching TXV
Kit that must be field installed to enable operation of the system in the cool mode.
The following procedure is for the installation of the TXV Kit which must be done prior to making the
line set connections to the cased coil.
Figure 10 illustrates the TXV Kit as shipped with the external parts for field installation identified. In
Figure 10, the pressure equalizer tubing and suction line Tee are shown connected to the control
box for illustration purposes. These parts are shipped with the TXV control box and are field
assembled to the control box and to the suction line. The TXV (thermal expansion valve), CAV
(cooling assist valve) and interconnecting tubing are located inside the control box to ensure
performance.
Figure 10. TXV Control

TXV–CLP-KIT (07/15) Page 19
The TXV control box is field positioned external to the vertical (upflow or downflow) cased coil and
fastened to a solid mounting surface immediately adjacent to the cased coil as shown typically in
Figure 11a. Locate the TXV control box to allow a service access of at least 12 inches in front of
the box to adjust the TXV control.
Figure 11a. TXV Control installed near Cased Coil (Vertical Application)
Important!
The TXV control box must be located no more than 3-1/2 feet from the
suction tube stub out on the air handler. The TXV control box must be
mounted above the cased coil tubing stub outs as shown.

TXV–CLP-KIT (07/15) Page 20
For horizontal cased coil applications (left or right air flow), the TXV control box is field positioned
external to the cased coil and can be fastened to a solid mounting surface immediately adjacent to
the cased coil as shown typically in Figure 11b.
Figure 11b. TXV Control installed near Cased Coil (Horizontal Application)
Important!
The TXV control box must be located no more than 3-1/2 feet from the
suction tube stub out on the cased coil. The TXV control box must be
mounted above the cased coil tubing stub outs as shown.