Worcester Ri Isolation for boiler

[Mikead80]

Attended a Worcester Ri which has been 'At Risked' by the service contractor due to boiler wiring. Boiler has been in operation for over 5 years.
Cylinder and all controls and fused spur located inside the property, boiler located in garage. The boiler only has SL N E supplying it, installer has connected the SL to the boiler L and bridged to boiler SL meaning the boiler is powered down until a demand is made and when the demand is satisfied comes to a very quick shut off too, no fan over run to clear flue, no pump over run to dissipate heat so will require wiring correctly to get a permanent live and pump live as per manufactures instructions.

There is a double socket available in the garage, the option of running a 5 core from boiler back to control centre is not possible. I'm going to supply the boiler with L N E from the garage double socket, either with a 3A plug or fused spur.
The existing cable feeding the boiler I will keep the SL as SL and use the N for the Pump Live.

So I will now have 2 cables going into the boiler - L N E (from garage) & SL PL (from and to the control centre). I have ordered electrical warning labels to inform service engineers there are 2 separate electric supplies/isolators to the boiler, one in the garage and one from the control centre in the house.

Recommendations Please!!

I would like one isolator at the boiler to cut off both cable feeds, the usual 3 pole fan switches will not work as I need to isolate L N SL PL.
The only isolator I can see that may do the job is the 16A BG 4 Pole Rotary Isolator Screwfix part number 874XF which appears excessive but can't find anything else.

Appropriate warning labels will clearly giving locations of both electrical isolation points will hopefully keep future engineers safe but I feel the service contractor they have here will likely flag up 'no isolation point' directly at the boiler when they return, interestingly they offered no solutions to this issue, just 'at risked' it and left.

Any suggestions please?

Thanks!!

 

[RBG]

I went on a Worcester training course where they mentioned this sort of situation . You can get a wireless type unit in situations where 5 core isn’t possible. (I will see if I can dig out name) but it’s not as good value as cable. Can happen when replacing older boilers and you need to upgrade to 5 core but can’t due do cable run That is one option? Speak to Worcester. Are they happy with 2 power sources?

 

[RBG]

MAINSLINK by RF Solutions is the product

May or may not be an option depending on what you have to do / are happy with as the end result.

 

[Mikead80]

MAINSLINK by RF Solutions is the product

May or may not be an option depending on what you have to do / are happy with as the end result

Appreciate this, definitely another option to consider, will still have to have 2 separate supplies, but will allow one isolation point at the boiler rather than a fused spur to big isolator. Will check in with Worcester too, thanks for the advice

 

[RBG]

Appreciate this, definitely another option to consider, will still have to have 2 separate supplies, but will allow one isolation point at the boiler rather than a fused spur to big isolator. Will check in with Worcester too, thanks for the advice

no problem..if you wanted to look at the products wiring instructions / brochure thing I can ping over to you