Refrigerant Piping; Condensate Drain Piping - Trane 2TEE3F31A1000A Installer's Manual

Installer's Guide
E. REFRIGERANT PIPING
IMPORTANT:
Refrigerant piping must be routed to maintain service
access to blower compartment and provide easy re-
moval of filter access panel and filter.
NOTE: Penetration around the Refrigerant lines must
be sealed and Electrical inlets need to be sealed at
both the low and the high voltage.
1. Refrigerant connections are made outside the cabi-
net.
2. Installation of refrigerant lines is covered in the in-
stallation instructions packaged with the outdoor
unit. Evacuation, leak testing and brazing proce-
dures are included in those instructions. Read those
instructions before starting installation of refriger-
ant lines.
NOTE: TXV Equipped is Non-Bleed, and may require a
start kit on the outdoor unit.
BRAZE SHIELD
Figure 13
F. BRAZING TO EVAPORATOR SECTION
NOTE: A brazing shield is provided in the information
pack accompanying this unit. This shield fits over the
refrigerant fittings while brazing. Wet the shield before
brazing. See Figure 13.
NOTE: TXV bulb MUST be protected (wrap a wet rag
around the suction line between the TXV bulb and
the braze joint) or removed, while brazing the tubing.
Overheating of the sensing bulb will affect the func-
tional characteristics and performance of the air han-
dler.
IMPORTANT:
Do NOT unseal refrigerant tubing until ready to cut and
fit refrigerant lines.
8
1. Remove both sealing caps from indoor coil.
2. Field supplied tubing should be cut squared-off, en-
suring the tube is still round and free of burrs at
the connecting end. Clean the tubing to prevent
contaminants from entering the system.
3. Run refrigerant tubing into the stub sockets of in-
door unit coil. Refrigerant line openings must be
completely sealed.
4. Braze and evacuate according to indoor and outdoor
installation instructions.
5. Seal around refrigerant lines.
PAINTED AREAS OF UNIT MUST BE SHIELDED
DURING BRAZING
G. CONDENSATE DRAIN PIPING
NOTE: Make certain that the unit has been installed in a
level position to ensure proper draining.
The indoor blower is downstream of the evaporator coil
which creates a negative pressure at the condensate
drain connections during operation. The condensate
drain connections in front of the indoor coil are 3/4"
NPT. The lower connection is the primary drain. See
Figure 14.
Two secondary drain connections are provided for the
different orientations (See Figure 14). The lower of the
two should be connected as a backup to prevent conden-
sate overflow by a blocked primary drain. The weep
hole in center of drain coupling area should be sealed
with caulk or RTV except in downflow unless secondary
drain is connected.
3/4" NPT
Secondary
drain
connection
Seal weep
hole except
for Downflow
configuration
For proper drainage of condensate, the following steps
should be followed:
1. The primary drain line must be trapped with a
minimum of 2" water seal as shown in Figures 15 &
16. Do not use preformed 3/4" PVC running
traps.
The use of Field fabricated or manufactured traps
as shown in Figures 15 & 16 is acceptable.
3/4" NPT
Primary drain
connection
Figure 14
18-GE04D2-11