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Installer's
Guide
UPFLOW / HORIZONTAL VENTING TABLE
TABLE 8
MAXIMUM VENT LENGTH:
DIRECT
VENT (2 PIPE SYSTEM)
-
klONDIRECT
VENT
(1 PIPE
SYSTEM)
-MAXIMUM
TOTAL
MAXIMUM
TOTAL EQUIVALENT
FEET FOR
EQUIVALENT
FEET
FOR
VENT AND INLET AIR PIPES (See Notes)
VENT PIPE ONLY (See Notes)
2" PIPE
2-1/2" PIPE
3" PIPE
4" PIPE
2" PIPE
2-1/2" PIPE
3" PIPE
4" PIPE
MODEL
& FITTINGS
& FITTINGS
& FITTINGS
& FITTINGS
& FITTINGS
& FITTINGS
& FITTINGS
& FITTINGS
*UXI B040A9241A
60
80
100
130
50
80
80
130
*UXl B060A9361
A
60
80
100
130
50
80
80
130
*UXl B080A9421
A
50
80
100
130
40
80
80
130
*UXlC080A9601A
50
80
100
130
40
80
80
130
*UXl O100A9481A
NOT ALLOWED
40
100
130
NOT ALLOWED
40
80
130
*UXl D100A9601A
NOT ALLOWED
40
100
130
NOT ALLOWED
40
80
130
*UXl D120A9601A
NOT ALLOWED
15
60
130
NOT ALLOWED
25
70
130
NOTES:
* - First letter may be "A" or "T"
1. The INLET AIR of one pipe systems require the installation of a 90 ° elbow (to prevent dust and debris from failing straight into thefurnace) and a 2 foot
horizontal or vertical straight pipe section connected before or after the elbow.
2. DO NOT MIX PIPE DIAMETERS IN THE SAME LENGTH OF PiPE OUTSIDE THE FURNACE CABINET (Except adapters at the top of the furnace).
If different inlet and vent pipe sizes are used, the vent pipe must adhere to the maximum length limit shown in the table above (See Note 7 below for exception).
The inlet pipe can be of a larger diameter, but never smaller than the vent pipe.
3. MAXIMUM PiPE LENGTHS MUST NOT BE EXCEEDED!
THE LENGTH SHOWN IS NOT A COMBINED TOTAL, IT IS THE MAXIMUM LENGTH OF EACH
(Vent or Inlet air pipes in two pipe systems).
4. One standard radius 90 ° elbow is equivalent to 12' of 4" pipe; one SHORT radius 90 ° elbow is equivalent to 10' of 3" pipe and one LONG radius elbow is
equivalent to 6' of 3" pipe. One SHORT/LONG
radius 90 ° elbow is equivalent to 7½' of 2½" pipe, & 5' of 2" pipe. Two 45 ° elbows equal one 90°elbow.
5. The termination tee or bend must be included in the total number of elbows. If the BAWENT100
termination kit is used, the equivalent length of pipe is 5 feet.
There is zero equivalent length for the BAYVENT200.
6. Pipe adapters are field supplied.
7.4" pipe may be reduced to 3" for termination with BAYAIR30AVENTA or BAYVENT200 without additional length restriction.
DOWNFLOW/HORIZONTAL
VENTING TABLE
TABLE 9
MAXIMUM VENT LENGTH:
DIRECT
VENT (2 PIPE SYSTEM)
-
NONDIRECT
VENT (1 PIPE SYSTEM)
-
MAXIMUM
TOTAL EQUIVALENT
FEET FOR
MAXIMUM
TOTAL EQUIVALENT
FEET FOR
VENT AND INLET AIR PIPES
(See Notes)
VENT PIPE ONLY (See Notes)
2" PIPE
2-1/2"
PIPE
3" PIPE
4" PIPE
2" PIPE
2-1/2"
PIPE
3" PIPE
4" PIPE
MODEL
& FITTINGS
& FITTINGS
& FITTINGS
& FITTINGS
& FITTINGS
& FITTINGS
& FITTINGS
& FITTINGS
*DX1 B040A9241A
60
80
100
130
50
80
80
130
*DXl B060A9361A
50
80
100
130
50
80
80
130
*DXl B080A9421A
45
80
100
130
40
80
80
130
*DXlC100A9481A
NOT ALLOWED
80
100
130
NOT ALLOWED
80
80
130
*DX1D120A9601A
NOT ALLOWED
15
60
130
NOT ALLOWED
25
70
130
NOTES:
* - First letter may be "A" or "T"
1. The INLET AIR of one pipe systems require the installation of a 90 ° elbow (to prevent dust and debris from falling straight into the furnace) and a 2 foot
horizontal or vertical straight pipe section connected
before or after the elbow.
2. DO NOT MIX PiPE DIAMETERS
IN THE SAME LENGTH OF PIPE OUTSIDE
THE FURNACE CABINET (Except adapters at the top of the furnace).
If different inlet and vent pipe sizes are used, the vent pipe must adhere to the maximum length limit shown in the table above (See Note 7 below for exception).
The inlet pipe can be of a larger diameter, but never smaller than the vent pipe.
3. MAXIMUM PiPE LENGTHS
MUST NOT BE EXCEEDED!
THE LENGTH SHOWN IS NOT A COMBINED
TOTAL, IT IS THE MAXIMUM
LENGTH OF EACH
(Vent or Inlet air pipes in two pipe systems).
4. One standard radius 90° elbow is equivalent to 12' of 4" pipe; one SHORT radius 90 ° elbow is equivalent to 10' of 3" pipe and one LONG radius elbow is
equivalent to 6' of 3" pipe. One SHORT/LONG
radius 90 ° elbow is equivalent to 7½' of 2½" pipe, & 5' of 2" pipe. Two 45 ° elbows equal one 90°elbow.
5. The termination
tee or bend must be included in the total number of elbows. If the BAYVENT100
termination
kit is used, the equivalent length of pipe is 5 feet.
There is zero equivalent
length for the BAYVENT200.
6. Pipe adapters are field supplied.
7.4" pipe may be reduced to 3" for termination
with BAYAIR30AVENTA
or BAYVENT200 without additional
length restriction.
®
SINGLE PIPE VENTING
UPFLOW FURNACE
'_ B--'
A (0-2') or greater
_.
_%
a (0-2') or greater
E-_L L
\
_:_
A+B = 2' minimum
Air ln/e/
_
.....
/
Ventutsnly
Air Inlet
\
DOWNFLOW
FURNACE
_Vent
only
to outside
A : 2' minimum
18-CD19D6-27
15
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