John_and_Val
Per our discussion, that information contained in the UltraTemp manual regarding the setup of the two heaters appears to be somewhat "dated" I'm informed, with regards to IntelliCenter automation. (I wish Pentair would revise or update their documentation, doggone it
).
Anyway, here is some updated information with regards to the heaters setup.
1. Forget about the Dual Heater Relay Kit (old info with regards to IntelliCenter).
2. Connect Pin 2 (Green) and 3 (Yellow) on the J8 connector on the UltraTemp to the same pins on one of your RS-485 connectors on a Serial Com Expansion Board.
3. Connect the Mastertemp to the 2-wire Gas Heater connection on the IntelliCenter mother card (J2).
4. Turn Heat Pump on.
5. Press MENU SELECT on Heat Pump Control Panel repeatedly until the Relay Remote screen is displayed.
6. Once displayed, press the UP or DOWN arrows to toggle to REMOTE ON/OFF
7. Wait a few seconds and screen will return to main menu.
Also connect a temperature sensor probe to the 2-wire SOLAR connector (J15) on the Mother Card. The sensor will not be installed anywhere. It can hang behind the Mother Card or inside of the enclosure Low Voltage Raceway (shorten up the cable length). Just don't let it find it's way into the Line Voltage area.
Okay cool. We got that. On to revised diagrams I guess.
Here is the latest revision (REV3) on the Equipment Pad Plumbing based on our exchanges
Based on the latest information from your City Inspector, here is REV2 of the Low Voltage Transformer Wiring Diagram
Again, based on the latest information from your City Inspector, here is REV2 of the Conduit Enclosure Layout Diagram.
I'm thinking this additional information should get you a bit further down the road. Let me know what I can do to help with "what's next".
r.