... range: -25C to 43CCompressor: Scroll CopelandRefrigerant: R407C1.Standard: Air source side inlet dry bulb is 20C, wet bulb is ... , outlet water temp 55C. Test conditons:2.Low: Air source side inlet dry bulb is 7C, wet bulb ... temp 10C, outlet water temp 55C. 3.Super low: Air source side inlet dry bulb is -15C, wet bulb ... water temp 10C, outlet water temp 55C. EVI Air Source Heat Pump Hot Water Radiator