16 18-CD19D8-18
Installer’s Guide
TABLE 10 VENT LENGTH TABLE
ALTITUDE
MAXIMUM TOTAL EQUIVALENT LENGTH IN FEET
FOR VENT AND INLET AIR (SEE NOTES)
0-7,000 Feet 2 INCH PIPE 2.5 INCH PIPE 3 or 4 INCH PIPE
UX2/DX2B060A9362A 200 200 200
UX2/DX2B080A9422A 50 120 200
UX2/DX2C100A9482A Not Allowed 60 200
UX2/DX2D120A9602A Not Allowed Not Allowed 200
7,000-9,500 Feet 2 INCH PIPE 2.5 INCH PIPE 3 or 4 INCH PIPE
UX2/DX2B060A9362A 100 100 100
UX2/DX2B080A9422A 25 60 100
UX2/DX2C100A9482A Not Allowed 30 100
UX2/DX2D120A9602A Not Allowed Not Allowed 100
9,500-12,000 Feet 2 INCH PIPE 2.5 INCH PIPE 3 or 4 INCH PIPE
UX2/DX2B060A9362A 50 50 50
UX2/DX2B080A9422A Not Allowed 30 50
UX2/DX2C100A9482A Not Allowed Not Allowed 50
UX2/DX2D120A9602A Not Allowed Not Allowed 50
NOTES: * - First letter may be "A" or "T"
1. Minimum vent length for all models: 3' horizontal or 3' vertical.
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 6 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).
4. 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 90° elbow is equivalent to 7½' of 2½" pipe or 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. BAYVENT200B equivalent length is 0 feet.
6. Pipe adapters are field supplied (except 120).
VENT TABLES
HORIZONTAL INSTALLATION
(Upflow / Horizontal or Downflow / Horizontal)
NOTE:
In horizontal venting when the factory supplied “off-set” (2X3
reducing coupling) is used for 3” vent pipe installation, make
sure the marking “Top” is located on the top side of the pipe.
The straight side must be on bottom for proper condensate
drainage. This coupling is factory supplied only with the
following models: *UC120 & *DC120, *UX120 & *UY120
*UX100 & *UY100, *UX808C960, and all *DX & *DY models.
h
2" TO 3" COUPLING
FURNACE
VENT
OUTLET
FACTORY SUPPLIED ONLY WITH
THE FOLLOWING MODELS:
UC120 & DC120
UX120 & UY120
UX100 & UY100
UX080C960
ALL DX & DY MODLES
To Next Page
Loading...
Need help?
General