Installer's Guide
BRAZE SHIELD
/ Figure 14
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 14.
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 right connection is the primary drain.
See Figure 15.
Two secondary drain connections are provided for the
different orientations (See Figure 15). The lower of the
two secondary drains should be connected as a backup
to prevent condensate 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.
f_
2
3/4" NPT
Secondary
drain
connection
Seal weep
hole except
for Downflow
configuration Y_"
3/4" NPT
Primary drain
/connection
Figure 15
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 16 &
17. Do not use preformed 3/4" PVC running
traps.
The use of Field fabricated or manufactured traps
as shown in Figures 16 & 17 is acceptable. The
manufactured trap shown in Figure 16 allows for a
float switch option to be added. Refer to the manu-
facturers data and instructions for details.
Manufactured Traps
EZT-105
2" MINIMUM
__! 2'' MINIMUM
Figure 16
Field Fabricated Trap
2" MIN.
I
!
I
Close as possible
Trap must be within 4'
of air handler condensate
drain connection.
Figure 17
18-GE11 D1-4 9
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