Wiring; Remote Temperature Sensor Wiring; Remote Analog Sensor Wiring; Powering The Ubiquistat - TCS UbiquiSTAT US4010 Product Manual

WIRING

2 Wiring
The UbiquiSTAT uses standard terminal designations for wiring. See the wiring diagrams on the following pages that cor-
respond to your UbiquiSTAT model.

2.1 Remote Temperature Sensor Wiring

There are three remote sensor inputs (T1, T2, T3) with a range of -40F to 160F. These can be used for remote room sens-
ing, discharge air temperature, outdoor air temperature or mixed air temperature. See Sections
on configuring temperature inputs.
Use 18 AWG shielded twisted-pair wire grounded at the sensor mounting location. Sensor wiring runs of 250 feet are at-
tainable if properly shielded wire is used and the installation environment is free of electrical noise. Sensor wire should be
kept at least five feet away from line voltage wiring. The UbiquiSTAT accepts 2-wire platinum 1000 Ohm RTD temperature
sensors. TCS provides a wide assortment of temperature sensors. Consult
When using remote sensors, the calibration may need to be adjusted. See

2.2 Remote Analog Sensor Wiring

Depending on UbiquiSTAT model, there are up to two current sensing inputs (AI1, AI2) configurable as 0-20mA or 4-20mA
for connecting remote sensors. These inputs can be used for any current-based sensors such as CO² and humidity.
Use 18 AWG shielded twisted-pair wire grounded at the sensor mounting location. Sensor wire should be kept at least five
feet away from line voltage wiring. TCS provides a wide assortment of 4-20mA sensors and transmitters. Consult
tcsbasys.com for a full product listing.

2.3 Powering The Ubiquistat

The UbiquiSTAT is powered from 24 VAC +15% / -5% and draws up to 10 VA.
Caution: Do not connect to 120 VAC. Doing so will damage the UbiquiSTAT.
The UbiquiSTAT may be powered from the unit transformer, however if the UbiquiSTAT is wired for communications, a
dedicated power source (transformer) will avoid any potential ground loop issues between equipment transformers.
Several thermostats may be powered from the same dedicated transformer, provided that the transformer has sufficient
power and the power polarity is maintained.
Caution: When multiple TCS Basys Controls devices are using a single transformer, the polarity of the power wir-
ing must be maintained or damage will occur. All TCS devices are half-wave rectified and have common return
paths.
When the UbiquiSTAT is used as a stand-alone thermostat without communications, the equipment transformer
may be used to power it. To do this, install a jumper between the "R" and "+24" terminals. The "24-" terminal must
then be connected to the common side of the equipment transformer.
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3.1 and
www.tcsbasys.com for a full product listing.
Section 4.5.2.2 for more information.
3.2 for information
www.
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