Wiring up a new variable speed pump with chlorinator

[coilerman]

I'm planning a pump upgrade from a single speed Hayward Superpump to a Pentair Superflo variable speed pump.

I have a chlorinator and would like to understand how the chlorinator could be switched on and off with the pump. I plan to hire an electrician but still would like to know how everything is connected for future troubleshooting.

I spoke to my retailer and he's telling me to connect the chlorinator to the pump and the chlorinator will shut off when the pump shuts off. I fail to understand how this will work, especially when the pump is 240volt and the chlorinator is 120.

Can anyone shed light?

My logic says, if I connect the chlorinator to the terminals on the pump, the power from my panel will continue to feed to the chlorinator as long as the breaker is on. The timer on the pump itself is not going to have any effect on the terminals or the chlorinator.

And if I have two hot wires and a ground coming from my panel to the pump to complete the 240 volt circuit, where does the chlorinator get the neutral wire?

 

[duraleigh]

Are you talking about a Salt water generator when you say "chlorinator"?

 

[jblizzle]

I do not think the VS pumps usually have power outputs that could drive a SWG.
Usually we recommend a current sensing relay on the VS power supply that senses with the pump is running and then provides power to the SWG.

 

[coilerman]

Are you talking about a Salt water generator when you say "chlorinator"?

Yes, that's what I meant. Need to learn the proper lingo.

- - - Updated - - -

I do not think the VS pumps usually have power outputs that could drive a SWG.
Usually we recommend a current sensing relay on the VS power supply that senses with the pump is running and then provides power to the SWG.

Ah yes, makes sense. I need to find the proper relay now. Thanks for the suggestion.

 

[JamesW]

There is only one variable speed pump that I know of that includes a built in relay to control an auxiliary load. The Jandy VS-FHP2.0 has a relay inside the enclosure that will open or close one leg of a power supply. This can be used to power a 120 volt or 240 volt auxiliary load such as a booster pump or a SWG. The relay closes when the motor speed is at least 1725 RPM.

The V-Green® 270 Variable Speed ECM Pool Motor from Century is a replacement motor that includes an auxiliary load relay. The relay is preset to close at 2,000 RPM but it is adjustable and it allows for timed control of an auxiliary load.

To control an auxiliary load, you would need to run at least on leg of the power to the auxiliary load to the auxiliary load relay in the motor housing and then back to the auxiliary load (SWG or booster pump).

In my opinion, all variable speed pumps and motors should include this feature.

Are you sure that the SWG is wired 120 volts? It can be wired for either 120 or 240 volts and it is usually wired to the load side of the pump switch and would be the same voltage as the pump.

 

[coilerman]

There is only one variable speed pump that I know of that includes a built in relay to control an auxiliary load. The Jandy VS-FHP2.0 has a relay inside the enclosure that will open or close one leg of a power supply. This can be used to power a 120 volt or 240 volt auxiliary load such as a booster pump or a SWG. The relay closes when the motor speed is at least 1725 RPM.

The V-Green® 270 Variable Speed ECM Pool Motor from Century is a replacement motor that includes an auxiliary load relay. The relay is preset to close at 2,000 RPM but it is adjustable and it allows for timed control of an auxiliary load.

To control an auxiliary load, you would need to run at least on leg of the power to the auxiliary load to the auxiliary load relay in the motor housing and then back to the auxiliary load (SWG or booster pump).

In my opinion, all variable speed pumps and motors should include this feature.

Are you sure that the SWG is wired 120 volts? It can be wired for either 120 or 240 volts and it is usually wired to the load side of the pump switch and would be the same voltage as the pump.

The V-Green replacement motor sounds interesting. Any idea if they are a direct replacment for a Hayward Superpump? Will the mounting holes line up with the pump housing?

 

[JamesW]

The ECM27CU will fit the SuperPump.