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8th May 2020, 10:20 PM
#1
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8th May 2020 10:20 PM
# ADS
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8th May 2020, 11:33 PM
#2
MB, you are working with UPVC pipe. From what I can glean the max temps are related more from a liquid temp V pressure V pipe distortion perspective and these start at around the 54 - 80 degC depending on the media. Using the pipe to carry warm air at 40deg c seems to suggest to me you should be OK. The UPVC is an insulator, so the pipe itself won't get that hot, so your heat should end up mostly from the nozzle distribution. UPVC does not ignite until around 840DegF, and then it gives off a range of nasties.
I would ensure you have slip joint supports to some degree in your pipe support as it will grow in length. I don't think the glue would be affected by the warm air either. I would ensure you have the flexi hose between the heater and the upvc pipe to take away any thermal shock at the pipe start point. Your nose or sense of smell is many times more sensitive than the best electronic detectors, so if you crank it up and it does not emit an odour, all good. if it does emit an odour, it may be residual residue from the manufacturing process within the inside of the pipe - simply run it for a 'while' to blow this out - you may get nothing. If you get any odour, assess if its detrimental - headache, watery eyes etc - but I doubt it to honest. PVC - flexible ducts are used in HVAC systems, and their molecular chains are a lot less contained that UPVC - unplasticised PVC. I cannot find anything specific about using UPVC in this application, so maybe trial it first is the best caution moving forward.
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9th May 2020, 05:13 AM
#3
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Thanks very much Phil mate, really appreciate your time and effort spent helping here!
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