I have Evohome with 8 rad controllers leaving bathroom rads uncontrolled, all operating through my CH Bdr91. A wireless hot water sender uses another Bdr91.
I have three Honeywell zone valves, one for each of the above so they can operate and call for heat independently. The HW zone valve is routed via a seperate safety cut out thermostat on my pressurised tank.
When the boiler was install I had a third zone valve installed for future underfloor wet heating. This is now complete and has a manifold obviously that is split between rooms with its own pump. I have a third Bdr91 and a wireless Honeywell rooms stat.
My problem is that I need to wire the manifold pump so that it only operates when underfloor heat is required which I want to operate separately to the main rad CH. I've looked in the junction box and am blown away by wiring as was the underfloor heating installer who has never used Honeywell Evo gear.
Where do I start. 3 wires from BDR91 and 5 from zone valve, plus the L/N/E from manifold pump.
BDR91
Br - live
B - neutral
Yg - ?
Zone valve
Br -
B -
Grey -
Orange -
Light brown -
Manifold Pump
Br - switched live when heat on/zone open
B - neutral
Yg - earth
Is it as complicated as it looks??
I have three Honeywell zone valves, one for each of the above so they can operate and call for heat independently. The HW zone valve is routed via a seperate safety cut out thermostat on my pressurised tank.
When the boiler was install I had a third zone valve installed for future underfloor wet heating. This is now complete and has a manifold obviously that is split between rooms with its own pump. I have a third Bdr91 and a wireless Honeywell rooms stat.
My problem is that I need to wire the manifold pump so that it only operates when underfloor heat is required which I want to operate separately to the main rad CH. I've looked in the junction box and am blown away by wiring as was the underfloor heating installer who has never used Honeywell Evo gear.
Where do I start. 3 wires from BDR91 and 5 from zone valve, plus the L/N/E from manifold pump.
BDR91
Br - live
B - neutral
Yg - ?
Zone valve
Br -
B -
Grey -
Orange -
Light brown -
Manifold Pump
Br - switched live when heat on/zone open
B - neutral
Yg - earth
Is it as complicated as it looks??
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