Bryant 912SD - UPFLOW INSTALLATION; FURNACE RELIABILITY CAUTION

21
Air gap here
Open standpipeLQKLJK
PLQLPXP for coilor
humidifier drain
TEE
(1/2” CPVC to 3/4” PVC
adapter from loose parts bag.)
To open drain
&RLORUKXPLGLILHUGUDLQ
ZKHQXVHG
+
+
+
Condensing
Furnace
-
-
-
-
-
ÄÄÄÄÄÄÄÄÄÄ
ÄÄÄÄÄÄÄÄÄÄ
ÄÄÄÄÄÄÄÄÄÄ
ÄÄÄÄÄÄÄÄÄÄ
ÄÄÄÄÄÄÄÄÄÄ
ÄÄÄÄÄÄÄÄÄÄ
ÄÄÄÄÄÄÄÄÄÄ
Evaporator Coil
+
+
+
< +
< +
< +
+
Blower
-
3/4” PVC
3/4
3/4
3/4
3/4
+ = Positive pressure
< + = Pressure lower than areas with +
ï = Negative pressure
+
3/4” PVC
DIRECTION
OF
AIRFLOW
+
+
+
3/4
Open standpipeLQKLJKPLQLPXP
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
ï
ï
ï
ï
ï
Evaporator Coil
+
+
+
< +
< + < +
+
Blower
ï
3/4” PVC
3/4
1/2”CPVCorlarger*
+
= Positive pressure
< +
= Pressure lower than areas with +
( = Negative pressure
+
3/4” PVC
DIRECTION OF AIRFLOW
+
+
+
+
3/4
3/4
3/4
3/4
Open
standpipe
(Optional
when coil drain
is
not
connected to
furnace
drain.)
Recommend “T” fitting
standpipe of same
diameteror larger
H[WHQGLQJXSZDUG
ZLWKPLQLPXPLQFKhigh
+
+
+
Condensing
Furnace
-
-
-
-
-
Evaporator
ÄÄÄÄÄÄÄÄÄ
Coil
ÄÄÄÄÄÄÄÄÄ
+
ÄÄÄÄÄÄÄÄÄ
+
ÄÄÄÄÄÄÄÄÄ
+
ÄÄÄÄÄÄÄÄÄ
ÄÄÄÄÄÄÄÄÄ
+
ÄÄÄÄÄÄÄÄÄ
< +
< +
< +
+
Blower
-
3/4” PVC
3/4
3/4
3/4
3/4
3/4
3/4
+ = Positive pressure
< + = Pressure lower than areas with +
ï = Negative pressure
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.)
DIRECTIONOFAIRFLOW
A170135
Fig. 18 -- Example of Field Drain Attachment
INSTALLATION
This furnace is certified to leak 2% or less of nominal air
conditioning CFM delivered when pressurized to 1--in. water
column with all present air inlets, including bottom closure in
upflow and horizontal applications, air outlets, and plumbing
and electrical ports sealed.
NOTICE
Upflow Installation
FURNACE RELIABILITY HAZARD
Failure to follow this caution may result in nuisance limit
switch cycling and unit component damage.
When a 17--1/2--in. wide upflow N coil is used with a
42060 furnace, the N coil must either be raised using a
transition piece at least 3--in. (76 mm) high or if a transition
piece is not used, the refrigerant lines must point to the front
of the furnace casing.
CAUTION
!