Carrier N92ESN Installation, Start-Up, Operating And Service And Maintenance Instructions page 11

Single-stage, 35-in. (889 mm) tall, 4-way multipoise high efficiency condensing gas furnace
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N92ESN: Installation, Start-up, Operating and Service and Maintenance Instructions
Remove relief tube from relief
port on condensate trap.
Remove the screw
that secures the trap
to the collector box and
remove trap.
Loosen clamp on inlet
to vent elbow.
Unconverted Factory Configuration as
Viewed in the Downflow Orientation
Connect the new pressure switch
tube from Loose Parts bag to
port on front pressure switch.
Install the two plugs
previously removed
on the open ports
of the collector box.
Connect relief tube
to port on collector
box.
Rotate elbow to
desired position and
tighten clamp to
15 lb. in.
Slide tube in stand offs
4
to adjust length.
Downflow Trap Configuration
Fig. 9 – Downflow Trap Configuration
(Appearance may vary)
Remove plug from
collector box.
DO NOT DISCARD.
Unconverted Factory Configuration
As Viewed in the Horizontal Right Orientation
NOTE: Remove knockout in
casing before re installing the
condensate trap.
Attach condensate
trap with screw to
collector box.
Install plug on
open port of
collector box
Horizontal Right Trap Configuration
Fig. 10 – Horizontal Right Trap Configuration
(Appearance may vary)
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Remove pressure switch tube from
front pressure switch and discard. A
new tube is shipped in the loose parts bag.
Remove tube from relief port.
Remove middle and bottom
plugs. DO NOT DISCARD.
Route tube through inducer
stand offs to adjust position
of the tube.
Trim excess tube.
Connect pressure switch
tube to port on collector
box.
Attach condensate trap
with screw to collector box.
Connect relief tube to
5
relief port on condensate
trap.
Align condensate trap
over middle and bottom
ports of collector box.
If alternate vent position
is required, loosen clamp
on inlet of vent elbow.
Remove the screw that secures
the trap to the collector box and
remove trap.
Slide relief tube in stand offs
to adjust length.
Vent elbow shown in alternate
orientation. Tighten clamp on
inlet to vent elbow 15 lb. in.
Align trap over middle and
right hand port on collector box.
5
If alternate vent position
is required, loosen clamp
on vent elbow inlet.
Remove relief tube
from port on collector
box.
NOTE: Remove knockout in
casing before re-installing the
condensate trap.
Rotate elbow to
9
desired position
and torque clamp
on inlet 15 lb.-in.
Slide relief tube in
stand-offs to adjust
length.
Attach condensate
trap with screw to
collector box.
Align trap over middle
and right-hand port on
collector box.
A11587
Fig. 11 – Horizontal Left Configuration
Evaporator Coil
+
+
3/4" PVC
+
+
+
3/4
Condensing
+
Furnace
+
+
< +
< +
< +
Blower
+ = Positive pressure
< + = Pressure lower than areas with +
(
= Negative pressure
A11573
Fig. 12 – Example of Field Drain Attachment
11
Remove the screw that secures the
condensate trap to the collector box
and remove trap.
6
Unconverted Factory Trap Configuration
As Viewed in the Horizontal Left Orientation
7
8
Horizontal Left Trap Configuration
(Appearance may vary)
Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä
Evaporator Coil
+ + +
Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä
Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä
Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä
Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä
Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä
Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä
Air gap here
Condensing
Open standpipe
+
Furnace
for coil or
+
humidifier drain
TEE
+
(1/2" CPVC to 3/4" PVC
adapter from loose parts bag.)
Blower
-
- -
To open drain
-
+ = Positive pressure
< + = Pressure lower than areas with +
= Negative pressure
Evaporator
Coil
Ä Ä Ä Ä Ä Ä Ä Ä Ä
+
Ä Ä Ä Ä Ä Ä Ä Ä Ä
+
Open standpipe
Ä Ä Ä Ä Ä Ä Ä Ä Ä
(Optional when coil drain is
not connected to furnace
Ä Ä Ä Ä Ä Ä Ä Ä Ä
+
drain.)
Ä Ä Ä Ä Ä Ä Ä Ä Ä
Ä Ä Ä Ä Ä Ä Ä Ä Ä
+
Ä Ä Ä Ä Ä Ä Ä Ä Ä
Condensing
+
3/4" PVC
Furnace
3/4
+
+
+
+
+
3/4
1/2" CPVC or larger*
Recommend "T" fitting
high
standpipe of same
diameteror larger
3/4
Blower
-
- -
3/4
-
+ = Positive pressure
< + = Pressure lower than areas with +
= Negative pressure
Remove relief tube from
relief port on condensate
trap.
Remove front pressure
switch tube and discard.
A new tube is shipped in
the Loose Parts bag.
Remove middle and right
plug from collector box.
DO NOT DISCARD.
Install two plugs previously
removed in open ports on
collector box.
Connect relief tube to port
on collector box.
Connect the new pressure switch
tube from Loose Parts bag to port
on front pressure switch.
Route pressure switch tube
underneath relief tube and
connect to port on
collector box.
Connect relief tube to relief
port on condensate trap.
A11574
3/4" PVC
+
+
3/4
+
3/4" PVC
3/4
+
Open standpipe
+
Air gap required when
another drain is connected
+
to furnace drain.
3/4
TEE
(1/2" CPVC to 3/4" PVC
adapter from loose parts bag.)
< +
< +
< +
-
3/4
-
3/4
Open standpipe
(Optional when coil drain is
3/4" PVC
not connected to furnace
drain.)
3/4
+
+
3/4
3/4
3/4" PVC
TEE
3/4
(1/2" CPVC to 3/4" PVC
adapter from loose parts bag.)
< +
< +
< +
-
3/4
-
3/4
A170135

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