Leak Check; Condensate Drain Piping - Trane A4MXA1824AC6HA Installer's Manual

Installer's Guide
Capillary tubes will
come out the top of
bulb when positioned
correctly.
Figure 12
When replacing the bulb and bulb clip, reinstall the bulb in
the proper orientations. See Figure 12.
9. For models with a TXV, wrap the TXV with insulation after
the bulb clip has been installed.
L. LEAK CHECK
1. Using a manifold gauge, connect an external supply of dry
nitrogen to the gauge port on the liquid line.
2. Pressurize the connecting lines and indoor coil to 150 PSIG
maximum.
3. Leak check brazed line connections using soap bubbles.
Repair leaks (if any) after relieving pressure.
4. Evacuate and charge the system per the instructions pack-
aged with the outdoor unit.
M. CONDENSATE DRAIN PIPING
Condensate drain connections are located in the drain pan
at the bottom of the coil/enclosure assembly. The female
threaded fitting protrudes outside of the enclosure for external
connection. A field fabricated trap is not required for proper
drainage due to the positive pressure of the furnace; however,
it is recommended to prevent efficiency loss of conditioned air.
1. The drain hole in the drain pan must be cleared of all
insulation.
2. Insulate the primary drain line to prevent sweating where
dew point temperatures may be met. (Optional depending on
climate and application needs)
3. Connect the secondary drain line to a separate drain line
(no trap is needed in this line).
8 18-AD37D1-1-EN