Installation Guidelines For Combustion Air Pipe And Vent Pipe; Combustion-Air And Vent Pipe Diameter; Approved Combustion- -Air And Vent Pipe, Fitting And Cement Materials - Carrier Infinity ICS 58MVC Installation Instructions Manual

Table 5 – Approved Combustion- -Air and Vent Pipe, Fitting and Cement Materials
ASTM
SPECIFICATION MATERIAL
(MARKED ON
MATERIAL)
D1527
D1785
D2235
D2241
D2466
D2468
D2564
D2661
D2665
F438
F441
F442
F493
F628
F656
F891
Installation Guidelines for Combustion Air Pipe and Vent
Pipe
It is recommended that all pipes be cut, prepared, and
preassembled before permanently cementing any joint.
1. Attach combustion air pipe and vent pipe per instructions
in sections "Combustion Air Pipe" and "Vent Pipe."
2. Working from furnace to outside, cut pipe to required
length(s).
3. Deburr inside and outside of pipe.
4. Chamfer outside edge of pipe for better distribution of
primer and cement.
5. Clean and dry all surfaces to be joined.
6. Check dry fit of pipe and mark insertion depth on pipe.
7. 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.
8. While cement is still wet, twist pipe into socket with 1/4
turn. Be sure pipe is fully inserted into fitting socket.
9. Wipe excess cement from joint. A continuous bead of
cement will be visible around perimeter of a properly
made joint.
10. Handle pipe joints carefully until cement sets.
11. Horizontal portions of the venting system shall be
supported to prevent sagging. Support combustion air
PIPE FITTINGS
ABS Pipe
PVC Pipe
For ABS —
PVC Pipe
PVC —
ABS —
For PVC —
ABS Pipe
PVC Pipe
CPVC —
CPVC Pipe
CPVC Pipe
For CPVC —
ABS Pipe
For PVC —
PVC Pipe
SOLVENT
CEMENT
AND PRIMERS
— —
— —
— Solvent
Cement
— —
Fittings —
Fittings —
— Solvent
Cement
Fittings —
Fittings —
Fittings —
— —
— —
— Solvent
Cement
— —
— Primer
— —
piping and vent piping a minimum of every 5 ft (1.5 m)(3
ft (.91 m) for SDR- -21 or - -26 PVC) using perforated
metal hanging strap.
12. Slope combustion air piping and vent piping downward
towards furnace a minimum of 1/4- -in. per linear ft with no
sags between hangers.
13. Horizontal portions of the venting system shall be installed
so as to prevent the accumulation of condensate.
14. Use appropriate methods to seal openings where
combustion air pipe and vent pipe pass through roof or
sidewall.
Combustion- -Air and Vent Pipe Diameter
Determine combustion- -air and vent pipe diameter.
1. Using Table 7, individually determine the diameter of the
combustion- -air and vent pipe allowed. If different, pick
the larger of these two diameters and use this diameter for
both combustion- -air and vent pipes.
2. When installing vent systems of short pipe length, use the
smallest allowable pipe diameter. Do not use pipe size
greater than required or incomplete combustion, flame
disturbance, or flame sense lockout may occur.
NOTE: Do not count elbows or pipe sections in terminations or
within furnace.
NOTE: A 2- -in. diameter pipe must be used within furnace
casing. Make all pipe diameter transitions outside furnace casing.
27
DESCRIPTION
Schedule40
Schedule40
For ABS
SDR21 & SDR26
Schedule40
Schedule40
For PVC
DWV at Schedule40 IPS sizes
DWV
Schedule40
Schedule40
SDR
For CPVC
Cellular Core DWV at Schedule40
IPS sizes
For PVC
Cellular Core Schedule40 &
DWV