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OK, this Technical Bulletin is from USA but it’s an interesting read. Check it out here:
http://www.ho****er.com/lit/bulletin/tb-a023-06.pdf
http://www.ho****er.com/lit/bulletin/tb-a023-06.pdf
Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws
Discuss Air Pressure Switches in the Air Sourced Heat Pumps area at Plumbers Forums
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WOW! 
That’s unlucky! Instead of the 4 stars please put T W A T in the address bar. I'm sorry, I hope you are OK with that.
it's at www.ho****er.com
That’s unlucky! Instead of the 4 stars please put T W A T in the address bar. I'm sorry, I hope you are OK with that.
it's at www.ho****er.com
Last edited:
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