International comfort products N92ESN Installation Instructions Manual page 20

Evaporator Coil
+
+
Condensing
Furnace
+
+
Blower
-
- -
-
+ = Positive pressure
< + = Pressure lower than areas with +
− = Negative pressure
20
Evaporator Coil
+ + +
Condensing
Furnace
+
+
Blower
-
-
+ Open
standpipe
3/4" PVC
+
+
+ +
3/4
+
3/4" PVC
3/4
+
+
3/4
1/2" CPVC or larger*
+
< +
< +
< +
3/4
-
1/2
+
-
1/2
+
3/4
Fig. 17 - - Example of Field Drain Attachment (Not Allowed)
Specifications subject to change without notice.
+ = Positive pressure
< + = Pressure lower than areas with +
+
+
+
− = Negative pressure
+ +
Blower creates positive pressure.
Positive pressure extends into coil
+ condensate drain (no trap).
< +
< +
< +
Furnace condensate does not flow
consistently when drain is at positive
-
+ pressure.
+
-
- -
+
+
Evaporator Coil
+
Condensing
Furnace
+
-
-
+ = Positive pressure
< + = Pressure lower than areas with +
− = Negative pressure
+
3/4" PVC
+
+
+ +
3/4
+
3/4
+
+
+
3/4
+
+
+
< +
3/4
< +
< +
+
+
-
+
+
Blower
3/4
-
+
- -
+
+
3/4
440 01 4541 00
3/4" PVC
1/2" CPVC or larger*
+
A14532