How long to install shower pump? Reality check required, please.

[Ric2013]

Hi. I'm currently estimating on installing a new shower pump to feed an existing bath/shower diverter.

Hot side: fit flange and spherical valve and Y strainer to old cylinder, reduce to 15 mm and to pump flexi and reconnect existing hot distributing pipe.
Repair shelf in AC and fit twin impeller pump.
New spur from existing circuit in A/C to new FCU for pump.
Cold side: drain CWSC, clean out, overhaul FOV, replace sagging chipboard with ply or T & G, new tank connector outlet, spherical valve, pipe in 22 around loft hatch and through ceiling into A/C, spherical valve, line strainer, reduce to 15, and to pump flexi.
Outlets: 15mm up through ceiling of AC, around loft hatch, auto air vents at highest point, and drop through ceiling down bathroom wall (visible) and under bath. Remove old pump from under bath, connect pumped 15mm to existing runs to bath tap/shower diverter, and cut out dead leg.

Insulate all new pipework except visible pipe in bathroom. All copper.

Cylinder stat is working, but out of calibration, so also need to bring it up to temperature slowly and check the outlet until it is actually 60 and not 75! And then dab of glue to stop people fiddling, methinks.

There seems to be a fair amount of pratting about with cleaning/servicing, carpentry, and electrics. Have to drop via loft as customer doesn't want floor lifting. Loft access is good, but CWSC is on the other side of the hatch from the AC and the F&E is directly above the AC, so this makes it a bit more fiddly.

Am I mad to think I'd be lucky to get this done in 2 days @ 8hours a day? I am thinking it's 2 days and a few hours to finish off on day 3...

 

[SimonG]

Definitely. Either renewables, or oil, or heat-pumps. I do need an angle. And I definitely need to do my G3 (even if I only used it for small electric water heaters).

I don't know what the situation is with renewables and heat pumps, I always thought you had to be mcs registered. A right pile of red tape and not directed to sole traders or smaller companies.

Oil, a doddle especially if you can get some hands on time with somebody local. You can look at OFTEC but in essence not required.
I used to be registered but it's all kerching with them and not needed for service and repair. Installation can be done through building control, which is the way I go now.

 

[Timmy D]

I don't know what the situation is with renewables and heat pumps, I always thought you had to be mcs registered. A right pile of red tape and not directed to sole traders or smaller companies.

Oil, a doddle especially if you can get some hands on time with somebody local. You can look at OFTEC but in essence not required.
I used to be registered but it's all kerching with them and not needed for service and repair. Installation can be done through building control, which is the way I go now.

Agree.

I’ve only got a couple of oil sites. One is 2 x 350kw boilers installed in 1972....they are fun.

I’m pretty certain MCS is just so your customer can get the government grants, not otherwise needed.

I’ve also got my f-gas but don’t see how heat pumps can currently work in the centre of London....

 

[Ric2013]

I’ve also got my f-gas but don’t see how heat pumps can currently work in the centre of London....

Old, uninsulated buildings and a lack of space to mount air source units, I take it you mean?

 

[Ric2013]

I used to be registered but it's all kerching with them and not needed for service and repair. Installation can be done through building control, which is the way I go now.

I think a lot of it is kerching. I don't have a great deal of confidence that these schemes are a guarantee of quality.

I recently pulled out of a house purchase. Semi-basement conversion with serious damp issues and when I got hold of the design spec for the conversion, I found that the design... well, even I could see the proposal for making the room waterproof wasn't going to work (and my surveyor had a similar opinion). Yet the design had been approved and the works signed off by none other than the local council's Building Control department. Had the work been sound and the basement dry I would have been less concerned even if there were no certification.

 

[Timmy D]

Old, uninsulated buildings and a lack of space to mount air source units, I take it you mean?

Yup and undersized flow/returns/heat emitters for a low temp system.