McQuay Unit Vent Integration with N2

[freddy-b]

2-Pipe Chilled Water Cooling and Hot Water Heat-
Software Model UV11 (Valve Control)
Software Model UV12 (F&BP Damper Control)

I have the tables in manual ED-15065-5 that translate the snvts to corresponding N2 points. I have already found discrepencies on several other points and got lucky.

But nviSourceTemp is eluding me. It says it is adf-15 , however it is not. The units have no onboard water sensors ...

Anyone have the correct point address?

TIA

[DaveCR]

It is possible that the mapping of nvoSourceTemp (adf-47) is accurate. You could watch that point while changing some other adfs.

[freddy-b]

It is possible that the mapping of nvoSourceTemp (adf-47) is accurate. You could watch that point while changing some other adfs.

47 gives me a static (32) value. If thats it..that proves my nvi value at 15 is not correct...I have also tried several others.

I do not have a nvosourcetemp at any point address on any reference sheet I have. ... What does it say nvisourcetemp is on your list?

Thanks for your help

[DaveCR]

Here's a link to what I have.
http://www.free-mcquay.com/mcquaybiz/literature/lit_controls/IntegrationInfo/ED15065-5.pdf


This is from page 70.

Source (Water-in) Temp Output
Keypad Menu Path So
This output network variable or read/write BACnet object is used to monitor the source (water-in) temperature. The value of this variable reflects the unit mounted source (water-in) temperature sensor or the value of the source (water-in) temperature input network variable or read/write object. If the input network variable or read/write object is set for a valid value, that value will override the sensor. Otherwise the sensor information will be used.

Good luck with this - our local rep is pretty useless after the sale.

[freddy-b]

Here's a link to what I have.
http://www.free-mcquay.com/mcquaybiz/literature/lit_controls/IntegrationInfo/ED15065-5.pdf


This is from page 70.

Source (Water-in) Temp Output
Keypad Menu Path So
This output network variable or read/write BACnet object is used to monitor the source (water-in) temperature. The value of this variable reflects the unit mounted source (water-in) temperature sensor or the value of the source (water-in) temperature input network variable or read/write object. If the input network variable or read/write object is set for a valid value, that value will override the sensor. Otherwise the sensor information will be used.

Good luck with this - our local rep is pretty useless after the sale.

I have come to the conclusion that the units are not setup properly for the 2-pipe config.