Vent Length Table - Trane UHMB060ACV3VA Installer's Manual

VENT LENGTH TABLE - MODULATING FURNACE
MAXIMUM TOTAL EQUIVALENT LENGTH IN FEET FOR VENT AND INLET
ALTITUDE
0-7000 Feet
NATURAL GAS
UH/DHMB060ACV3V
DHMB060BCV3VA
UH/DHMB080ACV3V
UH/DHMC100ACV4V Not Allowed
UHMD120ACV5V Not Allowed
DHMD120ACV5VB Not Allowed
DHMD120BCV5VA
7000-9500 Feet
NATURAL GAS
UH/DHMB060ACV3V
DHMB060BCV3VA
UH/DHMB080ACV3V
UH/DHMC100ACV4V Not Allowed
UHMD120ACV5V Not Allowed
DHMD120ACV5VB Not Allowed
DHMD120BCV5VA
9500-12000 Feet
NATURAL GAS
UH/DHMB060ACV3V
DHMB060BCV3VA
UH/DHMB080ACV3V Not Allowed
UH/DHMC100ACV4V Not Allowed
UHMD120ACV5V Not Allowed
DHMD120ACV5VB Not Allowed
DHMD120BCV5VA
Notes: * - First letter may be "A" or "T", ** - Last two digits may be "A" thru "Z"
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. Downflow models, UHM 100 and UHM 120 models include
the 2" x 3" adapter.
7. 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
Connection of the vent pipe to the vent collar should
also be accomplished using RTV type sealant. This type
sealant provides a connection which remains flexible
and can be separated in the future if service needs re-
quire the removal of the Vent Pipe for service or clear-
ance.
The vent length Table 10 above shows the required
vent lengths for installations at various altitudes. Op-
tional high altitude kits are available for installations
above 5000 feet (Installations above 12,000 feet are not
allowed) as follows:
18-CD30D1-9
2 INCH PIPE
PROPANE
200 Not Allowed
50 Not Allowed
Not Allowed
Not Allowed
Not Allowed
2 INCH PIPE
PROPANE
100 Not Allowed
25 Not Allowed
Not Allowed
Not Allowed
Not Allowed
2 INCH PIPE
PROPANE
50 Not Allowed
Not Allowed
Not Allowed
Not Allowed
Not Allowed
TABLE 10
AIR (SEE NOTES)
2.5 INCH PIPE
NATURAL GAS PROPANE
200 Not Allowed
120 Not Allowed
60 Not Allowed
Not Allowed Not Allowed
Not Allowed Not Allowed
2.5 INCH PIPE
NATURAL GAS PROPANE
100 Not Allowed
60 Not Allowed
30 Not Allowed
Not Allowed Not Allowed
Not Allowed Not Allowed
2.5 INCH PIPE
NATURAL GAS PROPANE
50 Not Allowed
30 Not Allowed
Not Allowed Not Allowed
Not Allowed Not Allowed
Not Allowed Not Allowed
For *UHM/DHMB060 use BAYSWT07AHALTA.
For *UHM/DHMB080, C100 use BAYSWT09AHALTA.
For *UHM/DHMD120 use BAYSWT08AHALTA.
For Canadian applications, use the appropriate
tables in the latest edition of the National Fuel Gas
Code (ANSI Z223.1 • CAN/CGA B149.1 Installation
Codes or "Exhibit J" of ANSI Z21.47 • CAN/CGA-2.3
Standards. "Exhibit J" includes examples and draw-
ings of typical venting systems.
Installer's Guide
3 or 4 INCH PIPE
NATURAL GAS PROPANE
200
200
200
200
200
3 or 4 INCH PIPE
NATURAL GAS PROPANE
100
100
100
100
100
3 or 4 INCH PIPE
NATURAL GAS PROPANE
50
50
50
50
50
150
150
150
150
100
100
100
100
100
50
38
38
38
38
25
19