8
18-GE06D1-4
Installer’s Guide
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.
IMPORTANT:
Do NOT unseal refrigerant tubing until ready to cut and
fit refrigerant lines.
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.
3/4" NPT Secondary
drain connection
3/4" NPT Primary
drain connection
Figure 14
BRAZE SHIELD
Figure 13
Two secondary drain connections are provided for the
different orientations (See Figure 6). The lower of the
two should be connected as a backup to prevent conden-
sate overflow by a blocked primary drain.
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. The
manufactured trap shown in Figure 15 allows for a
float switch option to be added.
Refer to the manufacturers data and instructions
for details.
2. The trap must be located within 4 feet of the air
handler drain outlet connection.
3. It is recommended that a clean-out tee or cross be
installed in the primary drain line for future main-
tenance (See Figure 15 & 16).
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.
