Downflow/Horizontal Venting Table; Single Pipe Venting; Vent Clearances - Trane AUH1B040A9241A Installer's Manual

Installer's Guide
MAXIMUM VENT LENGTH:
DIRECT VENT (2 PIPE SYSTEM) - MAXIMUM TOTAL EQUIV-
ALENT FEET FOR VENT AND INLET AIR PIPES (S
2" PIPE
MODEL & FITTINGS
*DH1B040A9241A 60
*DH1B065A9421A 45
*DH1C085A9481A NOT ALLOWED
*DH1D110A9601A NOT ALLOWED
NOTES: * - First letter may be "A" or "T"
1. FOR DURAVENT MANUFACTURED MODULAR VENTING SYSTEMS THAT ARE APPROVED IN TABLE 10, EQUIVALENT VENT LENGTHS MAY BE DIFFER-
ENT FROM WHAT IS SHOWN ABOVE. REFER TO THE VENTING SYSTEM MANUFACTURER'S INSTALLATION INSTRUCTIONS FOR APPROPRIATE VENTING
DIAMETERS AND EQUIVALENT LENGTHS.
2. Minimum vent length for all models: 3' horizontal or 3' vertical.
3. 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.
4. 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).
5. One SHORT radius 90° elbow is equivalent to 10' of 4" pipe, 10' of 3" pipe, or 8' of 2" pipe. One LONG radius elbow is equivalent to 6' of 4" pipe, 7' of 3" pipe, 6' of
2.5" pipe, or 5' of 2" pipe. Two 45° elbows equal one 90° LONG elbow.
6. 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.
7. Pipe adapters are field supplied (except for the *UH/DH2D120 models).
8. For Canadian applications, venting systems must meet ULC-S636 requirements.
UPFLOW FURNACE
B
Air Inlet
A
g

VENT CLEARANCES

See Tables 13 & 14
D
E E
V
V
L
h
18
DOWNFLOW/ HORIZONTAL VENTING TABLE
2-1/2" PIPE 3" PIPE
& FITTINGS & FITTINGS
80 100
80 100
80 100
15 60

SINGLE PIPE VENTING

A (0-2') or greater
B (0-2') or greater
A+B = 2' minimum
Vent only
to outside
C
V
B
V
F
B
V
VENT TERMINAL X AIR SUPPLY INLET
TABLE 12
NONDIRECT VENT (1 PIPE SYSTEM) - MAXIMUM TOTAL
N ) EQUIVALENT FEET FOR VENT PIPE ONLY (S
EE OTES
4" PIPE 2" PIPE
& FITTINGS & FITTINGS
130 50
130 40
130 NOT ALLOWED
130 NOT ALLOWED
Air Inlet
A
INSIDE
CORNER DETAIL
G
V
B
B
V
V
B X
V
J
B
A
AREA WHERE TERMINAL IS NOT PERMITTED
2-1/2" PIPE 3" PIPE
& FITTINGS & FITTINGS
80 80
80 80
80 80
25 70
DOWNFLOW
FURNACE
Vent only
to outside
A = 2' minimum
H
I
M
V
K
18-CD29D1-11
N )
EE OTES
4" PIPE
& FITTINGS
130
130
130
130
X