Central heating layout. This should work, right?

[GreyBana]

Which mode of camray? 3 or classic?

Camray 3

Take you spoke to Worcester?

Yep. Took a while to get through, but got a friendly old boy on the phone.

The instructions should give max working pressure, typically 3 bar

Well FFS. Since speaking to the Worcester guy, I found the actual manual in a bunch of paperwork that the previous owners left when we bought the property. I took the Worcester guy at his word, but your comment made me take a look... Page 8, "Boiler Details", "Max. Boiler working pressure 40psi - 28 meters (92 ft) water head" (2.7 bar). To my layman ears, that very much sounds like it would be fine running as part of a pressurised system...

I'm so short of time at the moment and I've done all of the work for a gravity fed system now, so I'm going to have to leave it as it is. FFS.

Edit: Now I'm thinking ahead for when I do pressurise it (assuming my understanding above is correct), are there any good diagrams/resources out there that are commonly referenced for newbies like me to refer to?

I assume my hot water cylinder (the indirect heating coil, not the tank itself) would be ok to be in that same pressurised system (it's equally as old as the boiler)? It says on the label "MAX. PRIMARY WORKING PRESSURE 3.5 BAR" and "TESTED PRESSURE bat 1.45", so I assume it's fine?

 

[fixitflav]

Are you in the industry?

No, I'm a DIYer. Heating is too important to be left to the professionals

I'd guess not because a cobbler's children wear no shoes!

I don't quite get that. Pls explain.

From an earlier thread

And make the cold feed up and under, to avoid convection warming the F/E tank, encouraging algae growth.

(You) Ideally, but rarely done.

Maybe that explains some of the disaster areas you've seen! The recommendations in boiler manuals show up and under, as in #3 above.

 

[fixitflav]

Now I'm thinking ahead for when I do pressurise it (assuming my understanding above is correct), are there any good diagrams/resources out there that are commonly referenced for newbies like me to refer to?

Boiler manuals usually have diagrams showing open vented and sealed systems, as #3 above.

I assume my hot water cylinder (the indirect heating coil, not the tank itself) would be ok to be in that same pressurised system (it's equally as old as the boiler)? It says on the label "MAX. PRIMARY WORKING PRESSURE 3.5 BAR" and "TESTED PRESSURE bat 1.45", so I assume it's fine?

No problem. I'm surprised the primary can't stand higher pressure than 3.5 bar, it's only a pipe. I assume 1.45" means tested to 1.45 x design pressure.

 

[GreyBana]

Boiler manuals usually have diagrams showing open vented and sealed systems

Unfortunately it doesn't look like my boiler manual does have any plumbing diagrams. It has wiring diagrams, but nothing relating to plumbing schematics. Anything generic anyone can point me to?

On the up side, I finished up the gravity fed system today and it seems to work (bar one radiator, but that seems to be something to do with the radiator itself)! I forgot what it was like to have central heating; what a novelty! Thanks for everyone's help and advice!

 

[fixitflav]

Unfortunately it doesn't look like my boiler manual does have any plumbing diagrams. It has wiring diagrams, but nothing relating to plumbing schematics. Anything generic anyone can point me to?

Not sure what the problem is. If you stick to the arrangement in #1, cold feed to boiler return, you already have it.
If you modernise it, the pipe layout doesn't depend on the choice of boiler. The diagram in #3 covers it. As a detail, I wouldn't do it as #11, with the vent across the top of a tee as that gives pumpover from the vent a head start. Take the vent from the top of a horizontal run.