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hotpress = airing cupboard. it's a benetone burner the output is 35kw

agile that is a seperate from origional

mysteryman the cooker has it's own pressure guage, high limit stat and reset the problem is where the main pump is situated if left there it cannot send the flow back up from the hotpress to the flow in the attic to the conservatory now is it feasible to move the existing pump to the attic...

3 pumps will be fitted 1. ufh when i install it 2. main house and dhw 3. conservatory there will be 3 z/v fitted and when ufh goes in another z/v will be installed.

delta t can you comment further about your statement about producing more head?? thanks

matt you are correct on all those points,that's what i was trying to acheive. it is a benetone oil burner cooker and it was converted from solid fuel. the way i see the h37xl working would be to: 1. add 2nd pump 2. add a number 13 connector to w/c 3. on z/v 2 which is the bottom one take...

for mysteryman. the ufh that i have comes with pump stat & blending valve this is the design by the ufh manuf. so at the very least this would require 1 relay to allow pumps to operate independently thanks

the problem is the wilo pump is in the hotpress and if i connected the conservatory to the main heating primary then that means the flow for conservatory has to come down into hotpress from attic and return to the attic and flow out to conservatory, unless i move the pump up into the attic...

yes matt i have been keeping track of the responses. i have just uploaded 2 diagram's of the h37xl & h47xl i can get the way your solution works but i just can't get my head around the way of incorporating the relays into the 2 diagrams which i've uploaded. any chance of having a look and...

wiring diagram for h37 & 47 xl<br>

wiring diagram for h37xl<br>

the problem for me is i 've never used any relays before and yes i understand the orange switch wire goes to the relay but i just thought that i switch wire would come out of the relay and go into the boiler and pump and that the neutral would just come from the wiring center to them i was'nt...

thanks picasso for the post about nc & no that was what i thought they meant

picasso mysterymans plan is correct if i was to stick with one pump. but there is a 30 sq mtr extension currently being built at the moment and i will be installing ufh in this space now at the very least i'll be using 2 pumps but more than likely it will be the 3 the controls were going to...

can you explain what nc & no stand for thanks les

matt1e look forward to seeing your solution picasso spoke to a company in Dublin today that sell relays and there are very few over here there reply was that i should send them the h37xl wiring diagram and also describe to them exactly what i wanted to acheive with the 2 relays and the 2 pumps...