OK I was reading a thread the other day and it mentioned the Grundfos home
booster pump and another make, which was out of my price range, and they
seemed to be just what I was looking for to boost the pressure to the shower
upstairs. I have now bought the Grundfos. Couple of questions if I may as no
fitting instructions included, suppose it meant to be straight forward but
forgive the ignorance.
1, it looks to me like I need a 15mm - 1/2" tap connector to screw onto the
fittings they supply. That means that I then have to go from that to a 22mm
pipe via 15-22 reducer. Could I get away with buying 3/4 tap connector and
bolting this straight to the pump? It has to be a flat fit to the pump so
guessing that this is no good as they have a lip to go into the tap. Just
seems daft to me if I have to go down to 15mm just to bring it straight back
to 22 again. Fittings supplied are, Connection 3/4" BSPM Inclusive
fitting 1/2" BSPFunion set.
the pump can tec. details can be found at
http://www.grundfos.com/web/HOMEUK.N...e0029e512/82f2
c3efdd43bfa180256e0f00563537/$FILE/UPA%2015-90%2005%2003.pdf

2. can they be mounted horizontal or vertical?
3. does it have to be wired to a FCU or can I whack a plug on it. What fuse
rating, 5amp?

Thanks for any help as was going to fit in the morning!

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"simon beer" wrote in
:

OK I was reading a thread the other day and it mentioned the Grundfos
home booster pump and another make, which was out of my price range,
and they seemed to be just what I was looking for to boost the
pressure to the shower upstairs. I have now bought the Grundfos.
Couple of questions if I may as no fitting instructions included,
suppose it meant to be straight forward but forgive the ignorance.
1, it looks to me like I need a 15mm - 1/2" tap connector to screw
onto the fittings they supply.

I don't know why Grunfos supply those fittings, they're just confusing.

I may have these details a bit wrong because Norm next door *gave* me
the bits, but here goes.

The pump comes with a 3/4 bsp thread, they supplu adapters to 1/2 bsp,
so you need a 1/2 bsp to 15mm compression convertor.

Then you go back up to 22mm.

OR

get 3/4 bsp to 22mm compression convertors and nail it straight in.

I hope the pump is powerful enough for a shower, it works a treat for my
kitchen sink, and is totally silent.


mike

In an earlier contribution to this discussion,
simon beer wrote:

OK I was reading a thread the other day and it mentioned the Grundfos
home booster pump and another make, which was out of my price range,
and they seemed to be just what I was looking for to boost the
pressure to the shower upstairs. I have now bought the Grundfos.
Couple of questions if I may as no fitting instructions included,
suppose it meant to be straight forward but forgive the ignorance.
1, it looks to me like I need a 15mm - 1/2" tap connector to screw
onto the fittings they supply. That means that I then have to go from
that to a 22mm pipe via 15-22 reducer. Could I get away with buying
3/4 tap connector and bolting this straight to the pump? It has to be
a flat fit to the pump so guessing that this is no good as they have
a lip to go into the tap. Just seems daft to me if I have to go down
to 15mm just to bring it straight back to 22 again. Fittings supplied
are, Connection 3/4" BSPM Inclusive fitting 1/2" BSPFunion set.
the pump can tec. details can be found at

http://www.grundfos.com/web/HOMEUK.N...e0029e512/82f2
c3efdd43bfa180256e0f00563537/$FILE/UPA%2015-90%2005%2003.pdf

If you're connecting it into 22mm pipe, forget about the 3/4" to 1/2"
adapters supplied.

You then need 3/4" female BSP to 22mm compression fittings. The 3/4" fitting
needs to seal on the flat face, with a washer. Not all tap connectors have
spigots - some are flat and would be ok. You might even consider short
flexible pipes either side of the pump. I have just bought two braided
flexible tap connectors from BES to re-plumb my bath taps. These have a flat
face at the 3/4" BSP end, a 19mm bore, and a 22mm compession fitting the
other end.
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Set Square
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"Set Square" wrote in
:


If you're connecting it into 22mm pipe, forget about the 3/4" to 1/2"
adapters supplied.

You then need 3/4" female BSP to 22mm compression fittings. The 3/4"
fitting needs to seal on the flat face, with a washer.

I just used Fernox sealer, otherwise I'd have used a lot of tape, but the
LS-x is a lot easier

mike

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"mike ring" wrote in message
. 1.4...
"simon beer" wrote in
:



I don't know why Grunfos supply those fittings, they're just confusing.


Me neither, why not just give you somthing that goes to 22mm pipe seems as
it going to a hot system which is predominantly 22mm.


I hope the pump is powerful enough for a shower, it works a treat for my
kitchen sink, and is totally silent.

I hope so too, thought it worth a try for the money as I only want a bit
more omph to the head of the shower because it starting to go back up hill
again.The 1 down stairs got plenty of power for what we want.

Thanks for the replys, I now feel vindicated in asking!!

"simon beer" wrote in
:


Thanks for the replys, I now feel vindicated in asking!!

I forgot to mention, since you have no instructions,

The unit should be mounted with the pump spindle horizontal or the bearings
wiil fail (although my similar Grundfos C/H pump, installed before I bought
the hovel, went about 10 years before I mounted it correctly this summer in
my refettling)

It should not be mouted with the electric connector underneath. I don't
know if thats the zillion to one chance the electrics will flood, or that
the flow switch might not work in that position.

I tested it, and it does work, as I was sorely tempted, it was just the way
I wanted to mount it.

In the end I did it their way

mike