3 hours ago Jo asked ... How to engage clutch on old sewing machine to engage needle?    |    Jacky asked ... Miele Vacuum cleaner?    |    Ben asked ... Toyota Yaris French or Japanese?    |    Andy asked ... How can I mend my MacAlistair 450w hedge trimmer?    |    Felix asked ... Hitachi vt-m70em?    |    Click here to ask your question

how would you drain down the primary side of an indirectly heated unvented ?

how do you draindown the primary side of an indirectly heated unvented hot water cylinder
john, June 2011
what do you mean by primary side? ( heating coil or tank contents )

toptrish, June 2011