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Issue : #954
pump flow rates @ 2\\" vs 1.5\\" - Can i reduce 2\\" to 1.5\\"?

I am building a spa from scratch and am interested in purchasing the

2 HP Spa Pump (Balboa) Ultima 220/240 Model:DuraJet

but the intake and discharge are designed for 2" plumbing. My spa has 1.5" flex. Can I put a reducer in the intake/discharge or will that cause the pump to work harder and damage it, or reduce it's life, since the water flow will be reduced by .5"? Please advise.

- Jane
 
RE: pump flow rates @ 2\\\\\\\\\\" vs 1.5\\\\\\\\\\" - Can i reduce 2\\\\\\\\\\" to 1.5\\\\\\\\\\"?

That is not a problem and we can provide the reducers @$4.50 each.  We do precicely this with some of our own hot tubs.

Dieter Jung

Northern Lights Cedar Tubs Inc.
 
 
RE: RE: pump flow rates @ 2\\\\\\\\\\\\\\\\\\\\\" vs 1.5\\\\\\\\\\\\\\\\\\\\\" - Can i reduce 2\\\\\\\\\\\\\\\\\\\\\" to 1.5\\\\\\\\\\\\\\\\\\\\\"?

This is good news.  Thank you.

I have another question with regard to pump and blower size in HP.

As mentioned, I am building from scratch and highly interested in he Balboa Model VS501z - System PN54356HC - Kit PN 54220-z

I need to spec a pump and blower. I see that I cannot exceed 12amps for either, but how do I calcuate HP?

My spa is octagon. 77" across top, 33" high. I have calucated approximately 600 gallons. I have just purchased 5 Waterway Jet Air III Jets

2 - Pulse - 10 gpm

2 - Variflo - 10 gpm

1 - Whirlpool - 10 gpm

The blower will be pushing air through:

47 1/8" holes

17 1/4" holes

Can I outfit the tub with a 1.5 hp blower and pump or should I go with 2hp on each? I understand more may not be better in this case, so am apprehensive about the 2hp, but if it will produce a robust burst of both water and air without damage, I would like that.

Please advise.

Thank you for your time, Jane
 
 
RE: RE: RE: pump flow rates @ 2\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

Your water flow requirements are 50 gpm with all jets on.  That is easily handled with the 1.5 pump.

I can't help you with the blower calculation.  We don't use them anymore and I don't have the information on design of blower system.

 

Dieter
 
 
RE: RE: RE: RE: pump flow rates @ 2\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

Excellent. Thank you for your rapid responses. Ordering soon from you guys!!! =)