I have an old custom installed jacuzzi (see pic here: http://www.wjbzone.com/paradise/deck-after.jpg )

The old electric heater quit so I replaced it with a new Hayward H100ID1Gas heater:
It works great, the heater only runs when the pump (Hayward SP2607X10 240V 15Amp?) is running. I want to add a timer to keep the temperature up all day. (and hopefully be able to use in the winter - more issues with that)

I am looking a TIMEX INDUSTRIAL TIMER SWITCH 250 VAC 25 AMP to turn on the pump.

I want to know how often and for how long to run the pump to keep spa temperature up. (and any advice you might have on a timer)

Thanks
wjb