... time control,easily use and maintain. Oil fired hot water boilerHot water boilerWater boilerProduct features1. Automatic operation, safety, and ... and automatic control of steam pressure, water level and combustion system. The hot water boiler shall use programe control, and ... WNS2.1-1.0-115/70-Y(Q)WNS2.8-1.0-115/70-Y(Q)WNS4.2- ... Y(Q)CWNS2.1-90/65-Y(Q)CWNS2.8-90/65-Y(Q)Rated thermalPowerMW0.450.70. ...