Worcester 87180038360 Bosch Shield

Worcester Shield (87180038360). The Worcester Bosch heat exchanger shield is designed for use with Greenstar, Greenstar ErP, RD Series and CDi Series boilers. The heat exchanger transfers heat from a boiler's burner to water. A primary heat exchanger uses heat from a burner to raise the temperature of the water in the system, while a secondary heat exchanger is present only in combis and allows the heat to be transferred between closed systems. Fits multiple appliances. Genuine brand new Worcester product, covered by a Worcester manufacturer's guarantee.