Pool Heat Automation Suggestions

[Richard Kaplan <rkaplan@xxxxxxxxxx>]

I recently built an inground/outdoor covered pool which I intend to
operate year-round in a fairly cold climate (Pennsylvania).  The pool
has both an electric heat pump and a natural gas heater.

I would like to automate the operation of the pool's heating system so
that the automated system can:

(1) Change valves between the heat pump and natural gas heater
depending on outside temperature
(2) Operate the heat pump whenever it is warm outside in order to
efficiently store energy in the pool
(3) Operate the natural gas heater only when the pool water falls below
a given threshold
(4) Log data regarding how many hours per day the heat pump and gas
heater operate
(5) Let me control/monitor the system via an Internet link

Any suggestions regarding what system might accomplish this?  I am
particularly interested in a system which can be fairly sophisticated
in terms of the algorithm I may use to decide which heat source is
operational and for how long.



--
Posted via a free Usenet account from http://www.teranews.com