
VENTING INSTALLATION
Breathing Hazard - Carbon Monoxide Gas
•
Install vent system in accordance with codes.
•
Do not operate water heater if any part has been
exposed to flooding or water damage.
•
Do not operate if soot buildup is present.
•
Never operate the heater unless it is vented to
the outdoors and has and has adequate air
supply to avoid risks of improper operation,
fire, explosion, or asphyxiation.
•
Do not obstruct water heater air intake with
insulating jacket.
•
Do not place chemical vapor emitting products
near water heater.
•
Analyze the entire vent system to make sure
that condensate will not become trapped in a
section of vent pipe and therefore reduce the open
cross sectional area of the vent.
•
Gas and carbon monoxide detectors are available.
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
APPROVED VENT/INTAKE MATERIAL:
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PVC pipe materials:
• DWV ASTM-D2665 or CSA B181.2
• 6FKHGXOH$670'RU&6$%
• 6'56HULHV$670RU&6$%
CPVC pipe materials:
• CPVC 41 ASTM-D2846 or CSA B137.6
• 6FKHGXOH$670)RU&6$%
• 6'56HULHV$670)
Polypropylene - See
Polypropylene Installations
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• &HQWURWKHUP,QQR)OXHYHQWV\VWHP
Approved vent pipe materials that must be used in Canada:
• 8/&639&&39&
• 8/& 6 3RO\SURS\OHQH 6HH
Polypropylene Installations
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Approved intake air pipe materials that must be used in Canada:
PVC pipe materials:
• DWV ASTM-D2665 or CSA B181.2
• 6FKHGXOH$670'RU&6$%
• 6'56HULHV$670'RU&6$%
CPVC pipe materials:
• CPVC 41 ASTM-D2846 or CSA B137.6
• 6FKHGXOH$670)RU&6$%
• 6'56HULHV$670)
Polypropylene -See
Polypropylene Installations
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There will be some installations where condensate will be
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Figure 17
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Figure 19
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PLANNING THE VENT SYSTEM
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Table 5
.
Table 5. Max Pipe Lengths Per Number of 90° Elbows
Number of
90° Elbows
2” Maximum
Pipe - ft. (m)
3” Maximum
Pipe - ft. (m)
4” Maximum
Pipe - ft. (m)
1
2
3
4--
5--
6--
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Figure 17
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20