18
18-CD29D1-11
Installer’s Guide
Vent only
to outside
Air Inlet
B
A
A (0-2') or greater
B (0-2') or greater
A+B = 2' minimum
UPFLOW FURNACE
SINGLE PIPE VENTING
g
V
D
E
E
V
G
INSIDE
CORNER DETAIL
B
L
V
V
FIXED
CLOSED
OPERABLE
F
B
C
V
FIXED
CLOSED
V
V
V
B
B
B
A
X
J
B
H
I
V
X
K
M
V
VENT TERMINAL
X AIR SUPPLY INLET
AREA WHERE TERMINAL IS NOT PERMITTED
OPERABLE
h
VENT CLEARANCES
See Tables 13 & 14
MAXIMUM VENT LENGTH:
MODEL
DIRECT VENT (2 PIPE SYSTEM) - MAXIMUM TOTAL EQUIV-
ALENT FEET FOR VENT AND INLET AIR PIPES (S
EE
N
OTES
)
NONDIRECT VENT (1 PIPE SYSTEM) - MAXIMUM TOTAL
EQUIVALENT FEET FOR VENT PIPE ONLY (S
EE
N
OTES
)
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
*DH1B040A9241A
60
80
100
130
50
80
80
130
*DH1B065A9421A
45
80
100
130
40
80
80
130
*DH1C085A9481A
NOT ALLOWED
80
100
130
NOT ALLOWED
80
80
130
*DH1D110A9601A
NOT ALLOWED
15
60
130
NOT ALLOWED
25
70
130
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.
DOWNFLOW/ HORIZONTAL VENTING TABLE
TABLE 12
Vent only
to outside
Air Inlet
A
A = 2' minimum
DOWNFLOW
FURNACE
Содержание ADH1B040A9241A
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