Trane E4AH5E24A1J30A Installation Manual page 10

Keep the coil connections sealed until refrigerant connections are made. Refer to condensing unit
installation instructions for details on pipe size and insulation.
 Coil is shipped with nitrogen. Evacuate the system before charging with refrigerant.
 Make sure the refrigerant pipes layout do not block service access.
 Purge the refrigerant pipes and indoor coil with dry nitrogen while brazing.
 Use a wet rag or an approved heat paste to protect the TXV sensing bulb during the brazing
process.
Condensate Drain Connection
 Use a thin layer of Teflon paste, silicone or Teflon tape when making drain fitting connections.
 Do not over tighten fittings resulting in splitting pipe connections on the drain pan.
DO NOT OVERTIGHTEN DRAIN FITTING
UNIT MUST BE SLIGHTLY PITCHED
TOWARD DRAIN CONNECTION
 Make sure the drain pipes layout do not block service access. Minimum clearance of 25'' is required
for filter, coil or blower removal and service access.
 Ensure the unit is level or pitched slightly toward primary drain connection so that water will drain
smoothly from the pan. All horizontal drain pipes must be pitched downward away from the unit a
minimum of 1/8" per foot of line to ensure proper drainage.
 Do not reduce drain pipe size less than connection size provided on condensate drain pan.
 Do not connect condensate drain pipe to a closed or open sewer pipe.
 The drain pipe should be insulated where necessary to prevent sweating and damage due to
condensate forming on the outside surface of the line.
 Make provisions for disconnecting and cleaning of the primary drain pipe if it become necessary.
Install a 3 inch trap in the primary drain pipe as close as possible to the unit. Make sure that the top
of the trap is below connection to the drain pan to allow complete drainage of pan.
 Auxiliary drain pipe should be connected to a place where it will be noticeable. Homeowner should
be warned that a problem exists if water begins running from the auxiliary drain pipe.
 Test condensate drain pan and drain pipe after installation is complete. Pour enough water into
drain pan, make sure that the drain pan is draining completely, no leaks are found in drain pipe
fittings, and no water is draining from the termination of the primary drain pipe.
CONDENSATE DRAIN TRAP
DO NOT OPERATE UNIT WITHOUT
CONDENSATE DRAIN TRAP.
UNIT
Figure 7-1 Condensate drain trap
TO APPROVED
DRAIN
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