Table 3 — Fitting Requirement (cont)
UNIT | ACCESS HOLE NO.] | CONNECTION TYPE | CIRCUIT | FITTINGS REQUIRED† (in.) | ||
|
|
|
| 13/8 Street Elbow | ||
| 1 | Suction | Lower | 13/8 Nipple, 3 L | ||
|
|
|
| 13/8 Long Radius Elbow | ||
|
|
|
| 5/8 Street Elbow | ||
| 2 | Liquid | Lower | 5/8 Nipple, 73/4 L | ||
|
|
|
| 5/8 | Long Radius Elbow | |
524J*30A |
|
|
| 5/8 | Street Elbow | |
| 3 | Liquid | Upper | 5/8 | Nipple, 181/2 L | |
|
|
|
| 5/8 |
| Long Radius Elbow |
|
|
|
| 13/8 | Nipple, 43/16 L | |
| 4 | Suction | Upper | 13/8 | Long Radius Elbow | |
| 13/8 | Nipple, 191/4 L | ||||
|
|
|
| |||
|
|
|
| 13/8 | Long Radius Elbow |
] See Fig. 8 for access hole location by number.
† Fittings are listed in order from header or tee stub connection out to access hole in corner support post.
524J
Condensate Drain - Install a trapped condensate drain line to unit connection as shown in Fig. 12. The unit drain connection is a PVC stub. See Fig. 13. Some areas may require an adapter to connect to either galvanized steel or copper pipe. For these applications, install a
3” MIN.
[76]
Install
NOTE: Dimensions in [ ] are in millimeters
C10691
Fig. 12 - Condensate Drains
NOTE: A trap must be installed in the condensate drain line to ensure that the static pressure of fans is balanced with the water column in the drain line and that condensate can drain completely from pan. Without a trap, air can be drawn up drain line until water level in condensate pan becomes equal to static pressure created by fans, preventing complete drainage. Conditions will worsen as filters become dirty.
C10692
Fig. 13 - Drain Pan Slope Adjustment
As shipped, the unit’s condensate drain pan is NOT sloped towards the drain connection. The pan slope must be changed to pitch towards the side of the unit with the drain connection. See Fig. 13. Loosen the 2 screws next to the drain outlet at both ends of the unit, push drain pan down in the slots near the drain connection, and up in the slots on the opposite end.
14