Thanks kindly for your prompt response
heres the email i got from a hayward rep:
All heat pump connections are direct wire 220V which means that you will have two line voltage but no neutral connection.
So I take from this that its likely two hot lines and a ground with no neutral. Which seems odd as a device of this voltage and amperage needs to be bonded and grounded per the hayward instructions. I think I will bury an 8/3 (underground) line in the appropriate PVC conduit at the appropriate depth per my municipalities code (18 inches minimum) and if I have an extra wire then so be it. Was just looking to save the $160 difference between the two types of wire as my run is 110 feet (and ultimately save $800 for the line installment fee). Better safe than sorry I suppose. I'm also going to go and take a picture of the data panel on the unit that I can give to the electrician.
Your website is very informative, thanks so much for informing the public to make good decisions. Mike Holmes would be proud : )
I will update this thread when the job is done so that others who choose the specific model I choose (under the same conditions) may be informed.
On a side note I also spoke with Waterco on the phone and their rep was very helpful. Hayward specifically doesn't put a 1-800 number on the website (that I could find at least, which is sad because much can be lost in translation over email)