Proper wiring approach

[tloomos]

I have a Jandy Aqualink RS controller with an indoor remote panel, spa side remote and iAqualink to allow remote access via a browser.

My equipment consists of:
* Main pump: Jandy VS PlusHP Model VSPHP270AUT
* Water feature pump: Jandy Model FHPM1.5
* Heater: Jandy Model JXI400N
* Salt Controller: Jandy AquaPure Model APUREM
* Chemical feeder: Hanna Instruments Model BL100-20

Currently each piece of equipment is on it's own relay, but the power for the heater, salt cell and chemical feeder are fed by the filter pump relay, so they only have power if the main pump is running.

My understanding is that since the main filter, heater and salt controller all have RS-485 control wires, they should have constant power (no relay) so the RS controller can control them. Is that correct?

One drawback I see with this setup is that I lose the ability to control these devices through the buttons on the panel when in service/timeout mode. Maybe I should keep them connected to the relays, but have the relays always powered on?

Looking for help understanding the correct way to wire the panel, or if there are multiple "correct" ways, the pros/cons of them.

 

[ajw22]

My understanding is that since the main filter, heater and salt controller all have RS-485 control wires, they should have constant power (no relay) so the RS controller can control them. Is that correct?

SWG power needs to be conencted through the filter pump relay to ensure the system does not run when the pump is off.

VS pump should have continuous power and not be connected through the relay.

JXI heater should be connected through the filter pump relay to ensure it does not run with the pump off.

One drawback I see with this setup is that I lose the ability to control these devices through the buttons on the panel when in service/timeout mode. Maybe I should keep them connected to the relays, but have the relays always powered on?

All those devices should only be powered when the pump is running. In SERVICE mode you turn on your pump first and then you can control the devices.

 

[tloomos]

The one thing that confuses me is "VS pump should have continuous power and not be connected through the relay." that seems to contradict the other items about the heater and salt generator being connected to the filter relay so they only have power when the filter is running.

It sounds like I should generally keep things the way I have them, but program the filter pump relay to always be on?

 

[ajw22]

Yes, filter pump relay should always be on when filter pump is running.

Heater and SWG connected through the filter pump relay are for their protection. Either can be damaged if powered when pump is not running.

Pump does not need such protection.

 

[1poolman1]

The one thing that confuses me is "VS pump should have continuous power and not be connected through the relay." that seems to contradict the other items about the heater and salt generator being connected to the filter relay so they only have power when the filter is running.

It sounds like I should generally keep things the way I have them, but program the filter pump relay to always be on?

A VSP is never truly "off" if connected correctly. It may not be running, but the drive is still powered so that it can run the motor as needed. Modern televisions are never "off," they are in a standby mode so that the remote control can have them start running. A VSP is the same way, whether controlled solely by the on-board or by a remote.
A VSP is a "smart" device, the rest of those items are "dumb" and can have the power cycled. There are very few variable-speed motors (Century EVO and the motors used on Hayward's low-end VSP) that use power cycling to operate.
You should not use the relay unless you put both the line and load wires on the same terminal so there is constant power. It is better to have the wire to the pump go directly to a the GFCI breaker.