TXV Kits

1
TXV Kits

• How to apply a TXV kit to an evaporator coil
  Initial installation

2
Coil Preparation

• Relieve the pressure from the coil by loosening
  the 13/16 nut 1 turn only.
• Remove the nut and discard the black seal

3
Coil Preparation

• Remove the check piston and discard

4
Coil Preparation

• Use a tube cutter to remove the spin closure on
  the suction line

5
Coil Preparation

• Remove the tailpiece clamped to the exterior

6
Suction Line Connection

• Slide back the suction line grommet before
  brazing
• Insert the TXV equalizer line with flare nut into
  the grommet
• Then insert the suction line tubing (line set)

7
Suction Line Connection

• Braze suction line tubing (line set) to the
  suction line field connection on coil

8
Expansion Valve Connection

• Connect expansion valve outlet to flowrator body.
  Make sure Teflon seal is in place

9
Expansion Valve Connection

• Slide the 13/16 nut into position. Braze
  tailpiece to the liquid tube (line set)

10
Expansion Valve Connection

• AFTER THE TAILPIECE HAS COOLED, position the
  white Teflon seal and hand tighten the nut

11
Expansion Valve Connection

• Torque the 13/16 nut to 10-30 ft/lb

12
Expansion Valve Connection

• Connect equalizer tube with 1/4 flare nut to
  suction line fitting on the suction manifold
  (internal to the case)

13
Expansion Valve Connection

• Torque to 8-10 ft/lb
• Dress the tube to avoid rubbing and replace the
  grommet

14
Expansion Valve Connection

• Secure expansion valve bulb to suction line
  (exterior to the case) with banding straps
  provided at the 10 oclock or 2 oclock position
• IMPORTANT Insulate the bulb and adjacent area

15
Wrap Up

• Finally Check for leaks

16
Thank You!