Can I Run This Commercial Quote Past You Guys??

[ShaunCorbs]

hi croft sorry about getting here late
few questions

wheres the pumps for the circuits (not the shunt pumps) ?

i wouldn't freeze it, as its going to be a pita with a llh (always moving)

close the two red gate valves, they should work good yorkshire valves, cylinder in the same room? by the looks it is maybe

pop the heads off the actuators (marking which one is which) and turn them to bypass (return)turn the pump valves off

open the bottom lever valve on the llh (drain) should be drain but might be expansion vessel, also at this time replace llh top and bottom flange gaskets

you should be fine now and fit lever valve straight onto the llh flow and lockshield gate valves on llh return

and if boilers were combined eg one flow and return would need to be increase but as there separated 42mm is fine

would use pressfit tbh

price for boilers and shunt pumps seem high where did you get the price from bss??

also would think about 1k to install would be fine

 

[Scott_D]

Will you need an etra flue bend on each to get 600mm apart?

 

[ShaunCorbs]

Will you need an etra flue bend on each to get 600mm apart?

30cm if there both inline eg same height or 1.5m if above

 

[Scott_D]

I have always had to fit commercial boilers with 600mm between flues for the clean air act. Vaillant insist on it when they comission

 

[ShaunCorbs]

I have always had to fit commercial boilers with 600mm between flues for the clean air act. Vaillant insist on it when they comission

isnt that for anything over 70kw, im 80% the instructions say 300mm

 

[ShaunCorbs]

3.6 Clean Air Act
The act applies to gas fired appliance installations exceeding 366.4 kW total gross heat input. It specifies requirements for chimney heights for open flued, mechanical flued and room sealed appliance installations.

so dont need to worrie about it

 

[Scott_D]

Cant go wrong if you follow the MI's 😉

 

[cr0ft]

Thanks Shaun,

Circuit pumps are all on the right hand side of that wall, should be on the photos.

I got the price for the boilers online but looks like I can get them a lot cheaper.

Waiting to hear back on Monday I think!

Cylinder is in the same room yes, basically a domestic hot water circuit in 22mm off the LLH.

Curious why you would use press fit? Just to avoid setting off fire alarms and needing hot work permit??

Keiran.

hi croft sorry about getting here late
few questions

wheres the pumps for the circuits (not the shunt pumps) ?

i wouldn't freeze it, as its going to be a pita with a llh (always moving)

close the two red gate valves, they should work good yorkshire valves, cylinder in the same room? by the looks it is maybe

pop the heads off the actuators (marking which one is which) and turn them to bypass (return)turn the pump valves off

open the bottom lever valve on the llh (drain) should be drain but might be expansion vessel, also at this time replace llh top and bottom flange gaskets

you should be fine now and fit lever valve straight onto the llh flow and lockshield gate valves on llh return

and if boilers were combined eg one flow and return would need to be increase but as there separated 42mm is fine

would use pressfit tbh

price for boilers and shunt pumps seem high where did you get the price from bss??

also would think about 1k to install would be fine

 

[ShaunCorbs]

cant see any pumps in the pic other than the one for they cylinder

if you mean the pumps are the black boxes no there control valves / actuators

and thats good

yes as you will need to stay an hour after you finish and fill in the hot works permit

and tbh its faster and less hassle doesnt matter if theres water in

 

[cr0ft]

Sorry mate just checked the pictures again. 2x heating pumps can't be seen on the pics but they are at high level just out of sight above the boilers. Definitely in the room, remember seeing them!

 

[ShaunCorbs]

Sorry mate just checked the pictures again. 2x heating pumps can't be seen on the pics but they are at high level just out of sight above the boilers. Definitely in the room, remember seeing them!

thats fine 🙂 you would surprised how many i see just going off the boiler shunts

hope you get it as looks like an easy change

you have done your commercial already tho?

 

[cr0ft]

Nah I have it all lined up if I get the job though! Just have to make sure I pass it all!

Didn't want to shell out for it until I got my first decent commercial job tbh.

TBH didn't even know it was a commercial quote when they asked me as initially they wanted 1x65Kw boiler so sounded like could be done on domestic ticket. Totally forgot to mention the one sitting next to it.

Does the system work properly with no pumps on the heating circuits and just shunt pumps then?

 

[ShaunCorbs]

be careful last time i went for my re up it took 3 months for the quals and new card to be issued from gas safe

and they normally do best response i got is

o that one is for back up only so doesnt run, so we dont class it as working