New Construction Started - Willis, TX (north of Houston)

[Duffatola]

I would prefer to avoid adding any head loss to the suction side of the pump.

It can be done, but it is less than ideal.

Will push them to install as a redundant backup on the discharge side.

 

[Duffatola]

Why can't it be put immediately after the pump?

Regarding the filter pump? Space is an issue here-

 

[JamesW]

You can leave that one out if you want.

 

[Duffatola]

You can leave that one out if you want.

They decided there IS enough room.

 

[Duffatola]

I would prefer to avoid adding any head loss to the suction side of the pump.

It can be done, but it is less than ideal.

I made 'em an offer they couldn't refuse. Has something to do with getting paid...

Final design - Infinity Edge system:

 

[Duffatola]

PB is advising the spa return and spa common return check valves aren't needed since the spa is at pool level. Thoughts?

 

[JamesW]

If they are at the exact same level, then you don't need the check valves.

 

[Duffatola]

PB is inquiring whether the spring check valve can be installed prior to (upstream) the regular check valve (they erroneously installed the two in reverse order).
Please re-educate me. What is the reason for the spring check valve?

 

[JamesW]

The heater bypass is only supposed to have the spring check valve as shown here.

The spring bypass is an automatic bypass for excess flow.

 

[Duffatola]

The heater bypass is only supposed to have the spring check valve as shown here.

The spring bypass is an automatic bypass for excess flow.

View attachment 454190

Any harm in leaving the other check valve? Flow restriction?

 

[JamesW]

If it is just a regular check valve, it is ok to leave it in.

You can remove the flapper later if necessary.

 

[Duffatola]

I have a chlorine tab feeder that was not included on the plan. Due to spacing issues, please advise of all possible installation point options.

 

[JamesW]

I would not install a tab feeder.

 

[Duffatola]

9/19 Construction (de-construction/demo) update.

After determining the beam was constructed too high, the mason crew removed all coping, tile and split-face stone and removed the mortar.

Before:




After (the red line on the gunite reflects how much must be removed - ~1"):




The gunite company is to start shaving the beam in the next day or two.

 

[Duffatola]

9/20 Construction update:

Short plumb is complete (lots of stuff in a small space):

 

[Duffatola]

I would not install a tab feeder.

It has been installed. Of course I don't have to use it.

 

[Duffatola]

If it is just a regular check valve, it is ok to leave it in.

You can remove the flapper later if necessary.

They revised and removed the regular check valve.

 

[JamesW]

If you ever have tabs in the feeder, do not stop the pump or the chlorine gas and liquid in the feeder will migrate out and it will damage everything.

The tab feeder creates a lot of restriction, so that can decrease the total performance.

I would remove it.

 

[Duffatola]

If you ever have tabs in the feeder, do not stop the pump or the chlorine gas and liquid in the feeder will migrate out and it will damage everything.

The tab feeder creates a lot of restriction, so that can decrease the total performance.

I would remove it.

Understood. It may never see a chlorine tab. I don't see much of a flow restriction through the orifice.

 

[JamesW]