Vent Termination - Carrier 58MSA Installation, Start-Up, And Operating Instructions Manual

VENT PIPE
HORIZONTAL TO ROOF
VERTICAL TO ROOF
9. Check dry fit of pipe and mark insertion depth on pipe.
NOTE: It is recommended that all pipes be cut, prepared, and
preassembled before permanently cementing any joint.
10. After pipes have been cut and preassembled, apply generous
layer of cement primer to pipe fitting socket and end of pipe
to insertion mark. Quickly apply approved cement to end of
pipe and fitting socket (over primer). Apply cement in a light,
uniform coat on inside of socket to prevent buildup of excess
cement. Apply second coat.
11. While cement is still wet, twist pipe into socket with 1/4 turn.
Be sure pipe is fully inserted into fitting socket.
12. Wipe excess cement from joint. A continuous bead of cement
will be visible around perimeter of a properly made joint.
13. Handle pipe joints carefully until cement sets.
14. Support vent piping a minimum of every 5 ft (3 ft for SDR-21
or -26 PVC) using perforated metal hanging strap.
15. Slope vent pipe toward furnace a minimum of 1/4 in. per
linear ft with no sags between hangers.
16. Use appropriate methods to seal openings where vent pipe
passes through roof or sidewall.
EXTENDED EXPOSED SIDEWALL PIPES
Sidewall vent pipe termination may be extended beyond area
shown in Fig. 34 in outside ambient by insulating pipe as indicated
in Table 5.
12" MIN
12" MIN
NOTE: A 12-In. minimum offset pipe section is recommended with
short (5 to 8 ft) vent systems. This recommendation is to reduce
excessive condensate droplets from exiting the vent pipe.
Fig. 32—Short Vent (5 to 8 Ft) System
VENT PIPE
HORIZONTAL TO SIDEWALL
VENT PIPE
VERTICAL TO SIDEWALL
1. Determine vent pipe diameter, as stated above, using total pipe
length and number of elbows.
2. Find appropriate temperature for your application and furnace
model using winter design temperature (used in load calcula-
tions).
3. Determine required insulation thickness for exposed pipe
lengths.
NOTE: Pipe length (ft) specified for maximum pipe lengths
located in unconditioned spaces cannot exceed total allowable pipe
length as specified in Table 4.
Step 3—Vent Termination
Vent pipe must terminate either through roof or sidewall. See
Table 6 for required clearances. See Fig. 33, 34, and 35 for exterior
piping arrangements.
Consideration of the following should be made when determining
an appropriate location for termination:
1. Comply with all clearance requirements stated in Table 6.
2. Termination should be positioned where vent vapors will not
damage plants/shrubs or air conditioning equipment.
3. Termination should be positioned where it will not be dam-
aged by or subjected to foreign objects such as stones, balls,
etc.
4. Termination should be positioned where vent vapors are not
objectionable.
25
12" MIN
12" MIN
VENT PIPE
A96189