... -Back) 4.Safty Control System Product Features of WNS Oil/Gas-fired Steam Boiler1. This horizontal wet-back boiler features ... transfer, power output, and exhaust smoke temperature downsizing.3. Burner is arranged eccentrically at low position, which creates a larger ... It is widely adapted to various fuels, including light oil, heavy oil, residual oil, natural gas, coal gas, and liquefied petroleum gas; ...