Evening all i have a technical question i hope you can help me with.
I've been asked to quote to fit a Vaillant 630 system boiler on an S plan with 3 seperate zones, 2 x CH and 1 x HW
The system comprises of 14 rads and a 42 x 18 indirect cylinder
8 rads on ground floor (1st zone)
6 rads on first floor (2nd zone)
Total rads output = 24kw
The 630 has a built in bypass but should i still fit an external one?.
I'm concerned about an additional bypass causing circulation / cycling problems if the built in one opens as'well as an external one.
Thanks
I've been asked to quote to fit a Vaillant 630 system boiler on an S plan with 3 seperate zones, 2 x CH and 1 x HW
The system comprises of 14 rads and a 42 x 18 indirect cylinder
8 rads on ground floor (1st zone)
6 rads on first floor (2nd zone)
Total rads output = 24kw
The 630 has a built in bypass but should i still fit an external one?.
I'm concerned about an additional bypass causing circulation / cycling problems if the built in one opens as'well as an external one.
Thanks