Taco Electronic Solutions iWorx ZXU1, Installation Manual

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iWorx® ZXU1
14 502-007, Effective: May 30, 2013
© 2013 Taco Electronic Solutions, Inc.
ZXU1 Hot Water Radiant Zone Mixing
Secondary Temperature Mixing Control
Applications include:
• Radiant Infloor, snowmelt, chilled beam or any sec-
ondary water temperature required versus main sup-
ply water temperature.
Sensors Required: Supply Water Temp, Return Water
Temp, Outside Air Temp
NOTE: Examples shown are for a mixed hot
water application. Applications for snowmelt
and/or chilled water applications may require
additional sensors such as Snow Melt Sen-
sors, Humidity Sensors, Room Temp or Slab
Temperature Sensors. Refer to
ZXU1 Applica-
tion Guide #505-007.
Setup Instructions
1.Press Controllers from main screen.
2.Select required ZXU from controller list and press
appropriate controller.
3.Press All Settings .
4.Press OAT Settings .
5.The OAT Settings menu opens.
a.Specify OAT Reset Low Temp in degrees.
b.Specify OAT Reset High Temp in degrees.
c. Specify Cutoff Temp Heat (Outside air tempera-
ture above which the heating is disabled).
d.Specify Cutoff Temp Cool (Outside air tempera-
ture below which the cooling is disabled).
e.Specify Changeover temperature (Outside air
temperature above which cooling occurs and
below which heating occurs).
f. Specify Offset for Outside Air Temperature Sensor
if calibration is required.
g.Press Save .