120v vrs 240v

[salesdvl]

Watzup,
Yes a pure 220 motor would run cheaper than a pure 110 motor, but spa motors are never 220 so it doesnt really matter.
A 110 spa will heat a little slower at first and if its cold outside you may see a "cooling" down if using it for an extended time.  Unless you are looking at a 2 person spa though, it doesnt really matter, because most everyone is going to be 220 when you get to medium size and bigger.

[Chas]

Chas or whomever,  When you guys are referring to HS "recovering" heat from the motors, are you talking about the fact that the air inlets are in the motor cabinet and that the air would be "warmed" prior to being injected back into the water at the jet?  Since the idea of the pump shroud is to actually vent the heat out of the motor compartment, I am confused.  Has something changed in the last year?  thanks.

This changed many years ago. The pump shroud takes the massive amounts of hot air the pump motor generates and sends it out a vent pipe. Primary reason for this was to keep the heat away from the electronics and make the motors last longer by running cooler.

BUT, just before the hot air exits into the world at large, there is a tap for the air which is injected through the hydro jets throughout the tub. Turn on all the air, and you get a lot of hot air through the jets. Turn on only one or two jets, and most of the hot air exits untapped.

Nice side effect is that the motors are much quieter thanks to the shroud.

[salesdvl]

gotcha.   thanks  

[dpgtech]

Watzup,
Yes a pure 220 motor would run cheaper than a pure 110 motor, but spa motors are never 220 so it doesnt really matter.

Are you saying spa motors on a convertible unit are never 220? or are you saying that spa motors are never 220 period? if it is the latter, then I think you are mistaken there are plenty of 220 spa motor's out there

[Chas]

Most pool and spa motors are dual voltage units. That means that they have two parts to the main winding. Put those two parts in series, hook up to 220 and you have 110 volts in each of the parts of the winding.

Move a few wires around so the two coils are in parallel, reconnect the power to 110 volts and you still have 110 in each half of the main winding.

On HS spas, the convertable spas only change the voltage to the heater, noting else.

HS sells far more 220 spas than convertable though...

[dpgtech]

thats how it is on all convertible spas I thought.  the pumps are 110 and the heater is the only component to get the 220.    I have seen motors that are 220/110 like you said that can be field wired for either, but are their not also straight 220 pumps that can only accept 220?

[Chas]

Yes, there are. But they are usually wound precisely the same - they just get hardwired into the 220 configuration, and a simpler contact board gets put in.