Post
by ericmark »
Thu Mar 27, 2008 12:06 am
There are many central heating systems as well as combi boilers normal condensation boilers will normally run to one of the Honeywell Plans. C, W, S or Y and with some of these systems the pump is controlled by the motorised valve so first step is to find what system you have. If you have a motorised valve how many ports will help to start with. Honeywells web site does show the four methods. Of course it does not have to follow one of these plans but most do.