Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.
Weil McLain 97+ boiler: PP or CPVC?

Matt Wynne
Member Posts: 8
Hi:
I'm installing the above system in my house. I would like to vent with polypropylene, but the manual states that 1st pipe connection to the boiler must be CPVC, which has a lower max temp.
I called them asking about this and they said it was because the engineers tested the system with CPVC.
Since I would like to run this rig with a return temp that would approach the max temp for CPVC, I would feel better venting it with PP. So, PP makes better sense and is safer, but I would risk voiding of warranty.
Any thoughts?
I'm installing the above system in my house. I would like to vent with polypropylene, but the manual states that 1st pipe connection to the boiler must be CPVC, which has a lower max temp.
I called them asking about this and they said it was because the engineers tested the system with CPVC.
Since I would like to run this rig with a return temp that would approach the max temp for CPVC, I would feel better venting it with PP. So, PP makes better sense and is safer, but I would risk voiding of warranty.
Any thoughts?
0
Comments
Categories
- 121.3K All Categories
- 84K THE MAIN WALL
- 2.9K A-C, Heat Pumps & Refrigeration
- 53 Biomass
- 417 Carbon Monoxide Awareness
- 40 Chimneys & Flues
- 1.7K Domestic Hot Water
- 4.8K Gas Heating
- 119 Geothermal
- 155 Indoor-Air Quality
- 3K Oil Heating
- 56 Pipe Deterioration
- 773 Plumbing
- 5.4K Radiant Heating
- 362 Solar
- 14K Strictly Steam
- 3K Thermostats and Controls
- 51 Water Quality
- 38 Industry Classes
- 73 Job Opportunities
- 19 Recall Announcements