Installation Guide

6
# 123105
III-4. Inspect the TXV box to conrm that the valve is compatible
with the refrigerant in the system.
Male
(Inlet)
Female
(Outlet)
III-5. Remove the valve from
the box and note the loca-
tion of the inlet side (threaded
male port) and the outlet side
(female swivel nut port).
III-8. Braze the stub-out portion to the liquid line and let cool.
III-3. Replace the Teon O-ring
seal in place (located between
the halves).
O-ring
III-2. Remove the existing ow-
rator piston using a small wire or
pick.
III-7. Slide attachment the nut onto the liquid line stub out
(See 7A, I-3)
Do not attempt to touch brazed joints
while hot. Severe burns may result.
!
WARNING
O-ring
III-6. After ensuring that the
Teon O-ring seal is still in place
inside the owrator body, screw
the female swivel nut onto the
owrator body.
O-ring
III-9. Remove the additional Tef-
lon O-ring seal from the box and
place on the shoulder just inside
the TXV inlet port. Screw the nut
attached to the stub-out portion of
the owrator body onto the inlet
port of the TXV.
A. Remove the valve stem from
the Schrader port mounted on the
suction line.
B. Screw are nut on TXV equal-
ization tube on to the Schrader
valve stem.
III-13. Mount the sensing bulb as described in section 7B-I or 7B-II.
III-10. Tighten all connections taking care to use proper back up.
III-12a. Some Aspen coils come with a Schrader valve on the suc-
tion line. If a Schrader port is present:
III-12b. In some cases, a suction line schrader port may not be
present. If a Schrader port is NOT present:
When handling or manipulating the equal-
izer tube, take great care not to kink or
make extreme bends in the tubing.
CAUTION
!
III-11. Remove the valve identication sticker from the valve and
place it adjacent to the Aspen model number on unit name plate.
A. Install a eld-supplied braze-on schrader
valve like that shown on the suction line near the
intended sensing bulb mounting location. Fol-
low valve manufacturer instructions and recom-
mendations for installation.
B. Attach equalizer tube to valve as described in
section III-12a above.
Note: Photos are for basic illustration purposes only. Actual equip-
ment conguration may dier from that shown.
III. Field-Installed TXV Retrot
When installing an expansion valve, it is not necessary to slide the
coil out of the housing.
III-1. Disassemble the owrator
body using two wrenches. Un-
screw the body with a counter-
clockwise motion.