Waterfurnace Energy Monitoring Anomaly (Installation Error?)
Last Post 11 Jan 2015 09:27 PM by rwgardner. 3 Replies.
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rwgardnerUser is Offline
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06 Sep 2014 11:19 PM
I recently had a Waterfurnace 7 install completed (along with the ground loops and whatnot). It includes Aurora performance monitoring.

I recently looked at the performance monitoring screen on the thermostat and noticed that it output the following (for instantaneous energy usage):

Fan W: 44
Comp W: 1752
Elect Ht W: 158
Pump W: 0


It's hot here, and the system was running in cooling only mode (and pumping out cold air), hence my surprise to see energy usage by the Elect Ht. I assume that the number I'm seeing next to Elect Ht should be next to Pump W.

In general, I'm wondering if anyone has _any_ comments of interest.

Here are some things I'm wondering about: I assume this was an error on the part of my installer? Is it an easy thing to do? You just mix up two wires? I'm surprised Waterfurance doesn't just have one nice plug with all the performance monitoring wires soldered to it. Is this Waterfurnace's error?

Is it easy to fix? I'd rather do it myself if possible because I've had a number of problems with this contractor at this point. (No, I didn't hire them because they were the cheapest. I hired them because they were recommended by the only two people I heard from who have had geothermal installations.)

Also along these lines, things like this (which there have been several) make me concerned about other potential errors that I may not know about? Should I not be? Anything I should check for?

Thanks a lot as always.
ACES-EnergyUser is Offline
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07 Sep 2014 08:27 AM
Having the electric heat installed, the unit now gets its 24volts from the 240/60/1 power that is supplied to the e-heat. That is why the gray and black wires need to be and also why you can not shut the power off the the e-heater at the disconnect / circuit breaker to make sure the e-heat is turned on. The instructions below there was probably a step missed.



Plug the existing power blower power 5-pin connector (brown, orange and green wires) into receptacle from the
auxiliary heat control panel with the brown, orange, and green wires. The ground wire from the original blower power is
no longer used and should be clipped or tied to prevent interference with other components.
• Plug the 5-pin connector (blue, violet, and green wires) hanging from the auxiliary heat control panel into the variable speed
ECM motor receptacle P11. Connect the green ground wire to the blower housing using the previously removed screw.
• Units that have the Aurora Advanced Control option are shipped from the factory with a current transducer already connected
to the variable speed ECM blower motor brown power wire. On these units the brown wire that is routed twice through the
Current Transducer will need to be replaced with the blue wire that is connected to the auxiliary heat power block. Disconnect
the brown wire from the PB2 power block in the unit’s control box. Route wire into the blower section and remove the current
transducer. Reroute the wire back into the control box and reconnect it back to its original location on the PB2 power block.
Remove the blue wire from the quick connect terminal on the auxiliary heat power block. Route this wire through the current
transducer twice and reconnect it back to its original location on the auxiliary heat power block.
• Reconnect the 16-pin connector from the main control board to the variable speed ECM motor receptacle P12.
• Proceed to the Energy Monitoring Connections table for instructions on connecting the auxiliary heat kit to the auxiliary
heat current transducer.
• Proceed to step 15.



Remove the GRAY and BLACK wires from the quick connect terminals on the L2 side of the auxiliary heat supply power block. Route both wires
through the inside of the current transducer and connect them back to their original location on the power block
www.ACES-Energy.com
rwgardnerUser is Offline
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07 Sep 2014 12:26 PM
Okay, thanks. I'll probably try this. Is it just in the instruction manual?

Is it easy to test the auxiliary heat? How do I force it to come on? If I just turn the heat up high enough, should it turn on?

rwgardnerUser is Offline
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11 Jan 2015 09:27 PM
Thank you very much, by the way, ACES-Energy! This was perfect. Energy usage is being monitored correctly now!
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