Ok Experts anything wrong with this Plumbing job?

[mihzyd777]

So they pool was out today and started installing equipment, electrical, plumbing etc.
Here is the equipment we have:
*Pentair Intellicenter 8ps
*Intelliflo VSF- for pool filtration (Far left)
*Pentair DE 100 filter
*IC40 SWG
*AquaCal SQ225 heatpump
*Pentair VSF XF for 3 rain waterfalls (Far Right)

One concern I have is I got the XF pump for the 3" plumbing from suction side. The plumber put the black 3" 90 degree sweep and then downsized to 2" pipe for about 18". Then they are planning for the return from the XF pump to go up 12" with 2" pipe and then split using Intellivalves and feed one 2.5" pipe for a large 8'ft rain waterfall and then two 2" pipe to feed two 36" rain waterfalls. Is this OK? I thought the XF pump took 3" pipe in/out so that I wouldn't cause to much pressure, but with short runs is it OK?
Anything else you see that is questionable? Remember they are still putting it together.

Thanks!!

 

[Jimrahbe]

777,

You can't install the IC40 in that position as the flow switch can be closed by gravity.. The flow has to be UP...

I'll let the flow guys talk about the other stuff..

Calling @JamesW

Thanks,

Jim R.

 

[JamesW]

One concern I have is I got the XF pump for the 3" plumbing from suction side. The plumber put the black 3" 90 degree sweep and then downsized to 2" pipe for about 18".

The line coming out of the ground looks like it is 4" going into the 4" black sweep 90 and then reduced to 3" pipe going to the pump.

Coming out of the pump looks like 3" pipe.

The black sweep looks like ABS or DWV, which are not pressure rated.

All fittings and pipe need to be schedule 40 pressure rated.

Pipe size.......outside diameter
2"...........................2.375"
2.5"........................2.875"
3"...........................3.5"
4"...........................4.5"

 

[mihzyd777]

777,

You can't install the IC40 in that position as the flow switch can be closed by gravity.. The flow has to be UP...

I'll let the flow guys talk about the other stuff..

Calling @JamesW

Thanks,

Jim R.

So here is a close of the SWG with the flow pointing down which is the direction going back into the ground to the pool returns. Is that not right?

 

[mihzyd777]

The line coming out of the ground looks like it is 4" going into the 4" black sweep 90 and then reduced to 3" pipe going to the pump.

Coming out of the pump looks like 3" pipe.

The black sweep looks like ABS or DWV, which are not pressure rated.

All fittings and pipe need to be schedule 40 pressure rated.

Pipe size.......outside diameter
2"...........................2.375"
2.5"........................2.875"
3"...........................3.5"
4"...........................4.5"

I can tell you for sure it's 3" pipe coming from pool suction. Then they downsized it to 2" into the XF pump and out from top as 2" here is a closer look at that 2" pipe.

 

[JamesW]

Measure the outside diameter.

 

[mihzyd777]

11" inches circumference which is 3" pvc right?

 

[JamesW]

Ok, that is 3" pipe.

The pipe going into and out of the pump is 2.5" pipe.

Measure the outside diameter of the pipe coming out of the pump.

It should measure 2-7/8" across if it is 2.5" pipe.

What will the maximum flow be?

 

[JamesW]

The unions that come with the pump will take 2.5" pipe to the inside and a 3" coupling to the outside of the union.

Since there is no reducer bushing, the pipe has to be 2.5"

The 2" that we can see is the end of 2-1/2".

In my opinion the suction should have stayed 3" into the pump.

For suction, you want to keep the water velocity below 6 ft/sec. For returns, you want to keep the water velocity below 8 ft/sec.

Size.......6 ft/sec......8 ft/sec.

1.5"...........38...............51 gpm
2"..............63...............84 gpm
2.5............90.............119 gpm
3.0".........138.............184 gpm
4”...........234.............313 gpm

So, it depends on the highest flow rate.

If the flow will be 90 gpm or less, 2.5" is fine.

If the flow will exceed 90 gpm, I would go with 3" pipe.

For the discharge, up to 119 gpm is ok for 2.5" pipe.

 

[mknauss]

So here is a close of the SWG with the flow pointing down which is the direction going back into the ground to the pool returns. Is that not right?

No. The SWCG must be installed with the flow up. In its current position, if the flow switch fails, it can fail closed. If the SWCG generates chlorine inadvertently without flow through it, it can explode. Does not happen often, but does happen.

 

[JamesW]

The pipe coming out of the pump is probably labeled 2-1/2" pipe.

We only see the final 2", which makes it look like it says 2" pipe.

 

[mihzyd777]

No. The SWCG must be installed with the flow up. In its current position, if the flow switch fails, it can fail closed. If the SWCG generates chlorine inadvertently without flow through it, it can explode. Does not happen often, but does happen.

Oh man I'm so confused on that so even though water is flowing in the same direction as the arrow, I need to flip it around?

 

[mknauss]

No, the unit must be placed in the pipe that has water flow going up.



The flow control valve is not needed. So just the loop is, if needed for room. It appears your plumber decided to do that. Not sure why, but they did.

 

[mihzyd777]

The pipe coming out of the pump is probably labeled 2-1/2" pipe.

We only see the final 2", which makes it look like it says 2" pipe.

The direction the print is going in, wouldn't it say 2.5" and the rest of the wording it shows?

 

[JamesW]

Cresline uses the 2-1/2" notation.

We only see the final 2".

The XF union takes 2.5" pipe to the inside.

Since there is no reducer bushing, it has to be 2.5".

Measure the diameter.

2" pipe has an outside diameter of 2.375" (2-3/8").

2.5" pipe has an outside diameter of 2.875" (2-7/8").

 

[JamesW]

How much flow is the pump expected to provide?

 

[mihzyd777]

No, the unit must be placed in the pipe that has water flow going up.

View attachment 322822

The flow control valve is not needed. So just the loop is, if needed for room. It appears your plumber decided to do that. Not sure why, but they did.

So he didn't have to do that loop right. The only thing the manual states is 12"-18" of straight pipe going into the swg but not out of is this correct? Was there a better way to route the pipes?

 

[mihzyd777]

Cresline uses the 2-1/2" notation.

We only see the final 2".

The XF union takes 2.5" pipe to the inside.

Since there is no reducer bushing, it has to be 2.5".

Measure the diameter.

2" pipe has an outside diameter of 2.375" (2-3/8").

2.5" pipe has an outside diameter of 2.875" (2-7/8").

I can check in the morning and get back to you.

How much flow is the pump expected to provide?

This pump will only be for filtering the pool, so I really don't see going above 35-45gpm max , but more than likely even less than that for a longer period. The pool is 24k gallons.

 

[JamesW]

This pump will only be for filtering the pool, so I really don't see going above 35-45gpm max , but more than likely even less than that for a longer period. The pool is 24k gallons

I thought that the XF was for the fountains?

 

[mknauss]

So he didn't have to do that loop right.

If there is enough room to run straight pipe, no, the loop is not needed. It is best to have 12" of straight pipe before the SWCG. If it is a bit less, the only thing that may happen is the pump rpm might have to be a bit higher to have the flow switch close.