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crankcase heater sizing

zepfan

zepfan Member Posts: 244

July 2015 in A-C, Heat Pumps & Refrigeration

does anyone know if there is a formula for sizing a crankcase heater for an air conditioning compressor (40 degree evaporator) As far as wattage per ton.I am trying to figure out if a 40 watt heater is too much for a ton and a half compressor for ac.thanks to all

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Comments

pecmsg Member Posts: 273

July 2015

I use the self regulating cable http://www.pentairthermal.com/products/heating-cables/crankcase-heaters/index.aspx

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unclejohn Member Posts: 1,279

July 2015

If it fits around the bottom it's the right one.

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