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Urgent help needed pls:Worcesterboiler ( conventional ) wiring issue.

dear all, i am going to wire a worcester conventional boiler, the old oiler, has Perm L, N, E, Pump L and Switch L, but the worcester boiler has: 1. Main L 2. Main N, 3. E 4. Ls 5. Lr, 6, Ns, 7, External Pump Nz 8, External Pump Lz i dont know connect which to which really, anyone can help...
- bluesky
- Thread
- Oct 25, 2011
- boiler cheers issue needed really urgent wiring worcester
- Replies: 8
- Forum: Central Heating Systems
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On Roof DC Risk Assessment

I'm in the middle of reviewing our mcs documentation including risk assessments and have realised that we haven't got a specific on roof dc connection risk assessment for our roofers. Does anyone else have one specifically for the roofers?
- SRE
- Thread
- Sep 27, 2011
- assessment chance email worcester
- Replies: 7
- Forum: Solar PV Forum | Solar Panels Forum
Worcester Greenstar 40cd1 / Y Plan

Evening all. Getting a little confused with regards the wiring for a Y plan when there is no controller to wire to (an internal programmer is being fitted). Since the main feed is wired into the boiler, then a switched live, switched neutral and boiler demand is taken to the wiring centre (no...
- rainstorm
- Thread
- Jul 25, 2011
- boiler internal model programmer wiring worcester y plan
- Replies: 3
- Forum: Central Heating Systems
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Reverse Polarity blow PCB? Worcester boiler with overun

Ok guys had a day and half today....Y plan Honeywell room stat, 7 day prog 2 channel. Worcester boiler with over run...... Some how the mains L/N got cross and had few 3 amp fuses blow in spur before we established issue...boiler fuse was ok though and once established that a donkey had...
- Robinson
- Thread
- Jun 6, 2011
- boiler heating polarity reverse thought wiring worcester
- Replies: 36
- Forum: Central Heating Systems
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Worcester combi + Underfloor heating

Hi, Can anyone help me regarding wiring combi with underfloor heating master wiring centre. I have always ran a feed direct to boiler from fused spur,then the same to the master wiring centre. Could I power the boiler from the wiring centre so only having the one spur? If so how ?
- mff369
- Thread
- May 25, 2011
- combi heating underfloor underfloor heating worcester
- Replies: 2
- Forum: Central Heating Systems
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Worcester Bosch Greenstar I system

Problem we got here is we thought it was a Combi and wired it in as planned. We then realised that the old tank below wasn't disconnected as the plumber said and has a 3 port mid position valve but there is no pump extremely or internally to the boiler. The fault is no hot water available...
- slocm3105
- Thread
- Mar 28, 2011
- bosch system worcester
- Replies: 13
- Forum: Central Heating Systems
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Worcester Jounier Boiler/21

Hi Guys, Looking For A Bit Of Help Please, Went To Wire A Bolier Up Tonite No Darwings Going Back In Morning No Connections Made As Yet ,, 5-core Flex From Spur To Boiler, 3-cxore Flex From Spur To Room Stat , Spur Feed By 2.5 Radil As Any Body Done One Before. Looking For A Bit Of Help...
- ONIT
- Thread
- Jun 26, 2008
- boiler canada connect connection wires worcester
- Replies: 11
- Forum: Canada

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