For use with the following:

Worcester Greenstar 12I FSN NG

and Worcester Greenstar 12I FSP LPG

with Worcester Greenstar 12RI FON NG

plus Worcester Greenstar 12RI FSP LPG

fits Worcester Greenstar 15RI FON NG

and Worcester Greenstar 15RI FSP LPG

plus with Worcester Greenstar 18RI FON NG

fits Worcester Greenstar 18RI FSP LPG

and Worcester Greenstar 24I FSN NG

with Worcester Greenstar 24I FSP LPG

fits Worcester Greenstar 24I Junior

and Worcester Greenstar 24RI FON NG

plus Worcester Greenstar 24RI FSP LPG

with Worcester Greenstar 25SI FSN NG

fits Worcester Greenstar 25SI FSP LPG

and Worcester Greenstar 28I Junior

plus Worcester Greenstar 30SI FSN NG

fits Worcester Greenstar 30SI FSP LPG

and Worcester Greenstar ERP System 9I

with Worcester Greenstar ERP System 12I

plus Worcester Greenstar ERP System 15I

fits Worcester Greenstar ERP System 18I

and Worcester Greenstar ERP System 21I

with Worcester Greenstar ERP System 24I

plus Worcester Greenstar ERP 25I

fits Worcester Greenstar ERP 30I

This part is found within the burner Section,

The burner is the primary heat method for all combustible heating appliances.

In natural gas appliances, the gas is transferred to the gas valve and in to the burner where it is ignited. The heat produced is then used to heat the water in the primary heat exchanger.