Just found the forum, thanks for the add. I'm having a Navien NPE210A installed in my basement next week and have a PVC pipe air resistance question.
My plumber chose the install location based on what he feels is the best location for the unit and ease of install. He's using 2in PVC through the wall of the house for air intake and exhaust. The PVC pipes will each have four 90deg elbows and around 5 to 6 ft total PVC of combined vertical/horizontal pipe.
On paper pipe length is 37 ft but by tape measure its still 5/6 feet. I live in the North East and its freezing right now . I'm concerned with the pipes being so short that any wind blowing into the them will come into the unit and will freeze the heat exchange or storage tank during a short power outage. Do 90deg elbows create any type of restriction for air flowing in?
My basement is heated but basically I'm concerned that with freezing air blowing in them the PVC pipes are to short during a power outage when the units freeze protection can't activate. The only thing Navien mentions about his is to increase the pipe distance, which may not always be practical. Just looking for real world ideas/opinions.
I am currently in "discussion" with my plumber on types termination ends, any help here would be appreciated. I know they have battery back power up units but its already getting expensive and I'm slightly tempted just to stay with my current natural vent set up.
Thanks for any help or suggestions
My plumber chose the install location based on what he feels is the best location for the unit and ease of install. He's using 2in PVC through the wall of the house for air intake and exhaust. The PVC pipes will each have four 90deg elbows and around 5 to 6 ft total PVC of combined vertical/horizontal pipe.
On paper pipe length is 37 ft but by tape measure its still 5/6 feet. I live in the North East and its freezing right now . I'm concerned with the pipes being so short that any wind blowing into the them will come into the unit and will freeze the heat exchange or storage tank during a short power outage. Do 90deg elbows create any type of restriction for air flowing in?
My basement is heated but basically I'm concerned that with freezing air blowing in them the PVC pipes are to short during a power outage when the units freeze protection can't activate. The only thing Navien mentions about his is to increase the pipe distance, which may not always be practical. Just looking for real world ideas/opinions.
I am currently in "discussion" with my plumber on types termination ends, any help here would be appreciated. I know they have battery back power up units but its already getting expensive and I'm slightly tempted just to stay with my current natural vent set up.
Thanks for any help or suggestions