14 18-CD35D1-1
INSTALLER’S GUIDE
TABLE 10
PLASTIC PIPE DESIGNATIONS
PVC
ASTM STANDARD
PIPE TYPE
ALLOWABLE TEMPERATURE
MARKING
F891
CELLULAR CORE
*158
ASTM F891
D2665
DWV PIPE
**158
ASTM D2665
D1785
SCH 40, 80, 120
**158
ASTM D1785
D2241
SDR SERIES
**158
ASTM D2241
CPVC
ASTM STANDARD
PIPE TYPE
ALLOWABLE TEMPERATURE
MARKING
D2846
CPVC 41
**212
ASTM D2846
F441
SCH 40, 80
**212
ASTM F441
F442
SDR SERIES
**212
ASTM F442
ABS
ASTM STANDARD
PIPE TYPE
ALLOWABLE TEMPERATURE
MARKING
D2661
SCH 40 DWV
***180
ASTM D2661
F628
SCH 40 DWV CELLULAR CORE
***180
ASTM F628
*Allowable temperatures based on classifications covered in ASTM D4396 [Deflection Temps Under Load (264 PSI)]
**Allowable temperatures based on classifications covered in ASTM D1784 [Deflection Temps Under Load (264 PSI)]
***Allowable temperatures based on classifications covered in ASTM D3965 [Deflection Temps Under Load (264 PSI)]
UPFLOW/ HORIZONTAL VENTING TABLE
MAXIMUM VENT LENGTH:
MODEL
DIRECT VENT (2 PIPE SYSTEM) -
MAXIMUM TOTAL EQUIVALENT FEET FOR
VENT AND INLET AIR PIPES (SEE NOTES)
NON-DIRECT VENT (1 PIPE SYSTEM) -
MAXIMUM TOTAL EQUIVALENT FEET FOR
VENT PIPES ONLY (SEE NOTES)
2" PIPE &
FITTINGS
2-1/2" PIPE
& FITTINGS
3" PIPE &
FITTINGS
4" PIPE &
FITTINGS
2" PIPE &
FITTINGS
2-1/2" PIPE
& FITTINGS
3" PIPE &
FITTINGS
4" PIPE &
FITTINGS
M951P040BU24AA
60
80
100
130
50
80
80
130
M951P060BU36AA
60
80
100
130
50
80
80
130
M951P080BU42AA
NA
NA
70
130
NA
NA
50
130
M951P100CU48AA
NA
NA
90
130
NA
NA
70
130
M951P100DU60AA
NA
NA
90
130
NA
NA
70
130
M951P120DU60AA
NA
NA
50
130
NA
NA
30
130
NOTES: *First letter may be "A" or "T", NA = NOT ALLOWED
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, and 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 BAYAIR30AVENTA 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.
8. For Canadian applications Only: IPEX 196006 may be used for horizontal and vertical terminations. IPEX 081216, IPEX 081218, and IPEX
081219 may only be used for horizontal vent terminations. Equivalent lengths are IPEX 196009 = 5 feet, IPEX 081216 = 11 feet, IPEX 081218
= 16 feet, and IPEX 081219 = 21 feet.
TABLE 11
VENTING TABLES
