I have a quick question regarding the central heating system installed a few years ago....I have recently noticed that I cannot turn on CH independently from the HW. The 3 way Honeywell valve seems to be working fine and is diverting hot water to the rads and HW cylinder (or both) based on input from the thermostats. Hot water works fine if requested from programmer (CH stays off) but if i select CH to be on, the HW comes on too (overrides the off setting on HW and both red lights on programmer light up).
In the Drayton LP55 program manual it mentions a switch at the back of the unit for gravity (g) and pumped systems (p), with gravity it says you cannot have CH without HW being on......great i thought so move the switch to p and problem solved.............. I assumed I had a fully pumped system so moved the switch from G to P After doing this, I could turn on and off HW and CH independently - but boiler does not come on if CH is selected and HW is not (both stats set at max).
I guess something is wired up wrong? System works fine as it is but i would like to separate CH and HW completely if i can to save a few pennies.
Hope this makes sense!
Any help / ideas much appreciated!
In the Drayton LP55 program manual it mentions a switch at the back of the unit for gravity (g) and pumped systems (p), with gravity it says you cannot have CH without HW being on......great i thought so move the switch to p and problem solved.............. I assumed I had a fully pumped system so moved the switch from G to P After doing this, I could turn on and off HW and CH independently - but boiler does not come on if CH is selected and HW is not (both stats set at max).
I guess something is wired up wrong? System works fine as it is but i would like to separate CH and HW completely if i can to save a few pennies.
Hope this makes sense!
Any help / ideas much appreciated!