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Section 11. Refrigerant Line Brazing
11.1 Braze The Refrigerant Lines
STEP 1 - Remove Heater, Coil, and Line Set panels.
(See Section 2.2 / 2.3 Panel Removal)
NOTE: ILLUSTRATIONS MAY DIFFER SLIGHTLY BY AIR HANDLER MODEL.
Important: Do NOT unseal coil refrigerant connec-
tion stubs until ready to make connections.
Important: Heat Sensitive Bulb.
The TXV sensing bulb must be removed or a wet rag
must be wrapped around the suction line between
the Bulb and the braze joint to protect the Bulb from
failure due to overheating.
Caution: This coil is pressurized with 8-12 psig of dry
air. Do not stand directly in front of the the coil connec-
tions when removing sealing plugs.
Step 2 - Remove the sealing plug from the indoor coil
liquid connection.
NOTE: A small amount of pressure should be released.
Step 3 - Remove the sealing plug from the vapor line
connection.
STEP 4 - Connect, but do not braze, field line set to
indoor coil.
Allow a minimum of 1.5 inches of refrigerant line
set before using an elbow coupling.
24
Heater
1
Panel
3
Line Set
Panel
2
Coil
Panel
Wet Rag on
TXV sensing bulb
Heater
1
Panel
Line Set
3
Panel
2
Coil
Panel
1.5" MIN
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