Hi,
I'm doing a refurb of my house and as part of that all of the old plumbing and electrics have been replaced (by their respective tradesmen).
In the new world order the downstairs heating is run off a 9 port polypipe ufh heating manifold and a new system boiler and megaflo have been placed in the loft.
The boiler and the megaflo each have their own dedicated radial circuits (and FCU's) running back to the consumer unit.
The ufh manifold is in a utility room which has it's own ring circuit and a FCU to power the pump and wiring centre.
The consumer unit is a Hager one populated with rcbo's.
When the heating engineer came to install the 3 nests (to control separate zones on the ufh and the water) we ran into issues.
Running the nests to control the manifold, pump, actuators, and the wiring centre downstairs all seemed to work fine.
The loft has it's own wiring centre for the boiler and megaflo (S plan circuit). Which also appears to work fine independently.
When connecting the 2 systems together - that's when the issues started.
When the connection to either the heating or water was triggered (from the nest) the rcbo's for both the utility room ring and the boiler would trip.
Initially he thought the cable between the loft and utility room might be the cause, but that was eliminated.
Ultimately he was unable to diagnose what the issue was on the day and is coming back this week to fix it.
I noticed that a neutral cable on one of the double sockets on the utility room ring was loose - could this have contributed to the rcbo's tripping when a heating or hot water call was made to the boiler?
It's also been suggested that the wiring centre in the loft and the one for the ufh manifold downstairs need to be powered by the same connection otherwise they will keep on tripping - does anyone know if this is correct and the way the system should be wired?
Thanks for your help
I'm doing a refurb of my house and as part of that all of the old plumbing and electrics have been replaced (by their respective tradesmen).
In the new world order the downstairs heating is run off a 9 port polypipe ufh heating manifold and a new system boiler and megaflo have been placed in the loft.
The boiler and the megaflo each have their own dedicated radial circuits (and FCU's) running back to the consumer unit.
The ufh manifold is in a utility room which has it's own ring circuit and a FCU to power the pump and wiring centre.
The consumer unit is a Hager one populated with rcbo's.
When the heating engineer came to install the 3 nests (to control separate zones on the ufh and the water) we ran into issues.
Running the nests to control the manifold, pump, actuators, and the wiring centre downstairs all seemed to work fine.
The loft has it's own wiring centre for the boiler and megaflo (S plan circuit). Which also appears to work fine independently.
When connecting the 2 systems together - that's when the issues started.
When the connection to either the heating or water was triggered (from the nest) the rcbo's for both the utility room ring and the boiler would trip.
Initially he thought the cable between the loft and utility room might be the cause, but that was eliminated.
Ultimately he was unable to diagnose what the issue was on the day and is coming back this week to fix it.
I noticed that a neutral cable on one of the double sockets on the utility room ring was loose - could this have contributed to the rcbo's tripping when a heating or hot water call was made to the boiler?
It's also been suggested that the wiring centre in the loft and the one for the ufh manifold downstairs need to be powered by the same connection otherwise they will keep on tripping - does anyone know if this is correct and the way the system should be wired?
Thanks for your help
