Carrier 59SC2B, Installation, Start-Up, Operating And Service And Maintenance Instructions

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20
Air gap here
Open standpipe for coil
or humidifier drain
TEE
(1/2” CPVC to 3/4” PVC
adapter from loose parts
bag.)
To open drain
+
+
+
Condensing
Furnace
-
-
- -
-
Evaporator Coil
+
+
+
< +
< + < +
+
Blower
-
3/4” PVC
3/4
1/2” CPVC or larger*
+ = Positive pressure
< + = Pressure lower than areas with +
− = Negative pressure
+
3/4” PVC
DIRECT
ION
OF
AI
RF
L
O
W
+
+
+
+
3/4
3/4
3/4
3/4
Open standpipe
(Optional when coil drain is
not connected to furnace
drain.)
+
+
+
Condensing
Furnace
-
-
- -
-
Evaporator Coil
+ +
+
< +
< +
< +
+
Blower
-
3/4” PVC
3/4
3/4
3/4
3/4
+ = Positive pressure
< + = Pressure lower than areas with +
− = Negative pressure
+
3/4” PVC
DIRECT
ION
OF
AI
RF
L
O
W
+
+
+
3/4
Open standpipe
Air gap required when
another drain is connected
to furnace drain.
+
TEE
(1/2” CPVC to 3/4” PVC
adapter from loose parts bag.)
+
+
+
Condensing
Furnace
-
-
- -
-
Evaporator Coil
+
+
+
< +
< +
< +
+
Blower
-
3/4” PVC
3/4
3/4
3/4
3/4
3/4
3/4
+ = Positive pressure
< + = Pressure lower than areas with +
− = Negative pressure
+
DIRECT
ION
OF
AI
RF
L
O
W
3/4” PVC
Open standpipe
(Optional when coil drain is
not connected to furnace
drain.)
TEE
(1/2” CPVC to 3/4” PVC
adapter from loose parts bag.)
A14533
Fig. 14 -- Example of Field Drain Attachment
59SC
2C