DZ Dražice OKC 250 NTR / HP DHW cylinder for heat pump 245 l heat pump hot water boiler, heat exchanger 2,5 m2, Ø584 h-1541 mm, ready for electric heating Back to: Domestic water heaters for heat pump (large heat exchanger surface + solar heating readiness) Description DZ Dražice NTR / HP hot water boilers for heat pumps (large heat exchanger surface) For more information, see: http://www.dzd.cz