Lochinvar 300 - Vent Pipe Material

100304522_2000545236 _Rev. 02 www. lochinvar .com 33
24” MAX.
APPLY
SEALANT
TO BOTH
SIDES OF
WALL
VENT SCREEN
(INSTALL IN
TERMINATION)
*OR 12” ABOVE ANTICIPATED
SNOW LEVEL
TEE FITTING
EXHAUST
TERMINATION
90° ELBOW
AIR INTAKE
TERMINATION
VENT SCREEN
(INSTALL IN
TERMINATION)
12” MIN.*
VENT SCREEN
(INSTALL IN
TERMINATION)
WALL MOUNTED
SUPPORT BRACKET
8” MIN.
Figure 36.
A
B
1”
EXHAUST
VENT
TERMINAL
INTAKE
VENT
TERMINAL
1”
“A” & “B”:12” ABOVE
ANTICIPATED SNOW
LEVEL OR 12” MIN.
ABOVE ROOF.
VENT SCREEN
- INSTALL IN
TERMINATIONS
8” MIN.
Figure 37.
VENT PIPE MATERIAL
Vent Pipe
Material
Pipe and fitting
nomenclature
Applicable
Standard
PVC DWV
ASTM D2665 or
CSA B181.2
PVC Sch 40, 80, 120
ASTM D1785 or
CSA B137.3
PVC SDR series
ASTM D2241 or
CSA B137.3
PVC BH
ULC S636‡
UL 1738§
CPVC CPVC 41
ASTM D2846 or
CSA B137.6
CPVC Sch 40, 80
ASTM F441 or
CSA B137.6
CPVC SDR series ASTM-F442
CPVC BH
ULC S636‡
UL 1738§
ABS Sch 40 DWV
ASTM D2661§,
CSA B181.1§ or
ULC S636‡
Polypropylene n/a
ULC S636‡
UL 1738§
‡ Applicable to Canada only.
§ Applicable to the United States only.
Note: Use of cellular core PVC (ASTM F891), cellular
core CPVC, or Radel® (polyphenysulfone) in non-
metallic venting systems is prohibited.
Table 5.
The combustion air intake pipe material may be PVC,
CPVC, ABS or polypropylene.
This heater is certified to use Schedule 40 PVC or CPVC,
or polypropylene material for venting. Check local codes
to determine which materials are allowed in your area and
only use approved material. All venting components must
be joined with the approved primer/ cleaner and solvent
cement. Do not cement the venting system to the heater.
For polypropylene vent systems follow the manufacturer’s
instructions.
Note: Polypropylene vent systems require separate
adaptor, termination, and elbows (field supplied). It is
recommended to use InnoFlue
®
SW Residential products
from Centrotherm (www.centrotherm.us.com).
Note: Plastic pipe and fittings are available through most
plumbing suppliers. Always check the marking on the pipe
to make sure you are using the correct material.
Note: Use of cellular core PVC (ASTM F891), cellular
core CPVC, or Radel® (polyphenolsulfone) in non-metallic
venting systems is prohibited.