TCS Basys Controls SZ1017a Product Manual - page 2
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2
Wiring
The SZ1017a, SZ1041, SZ1051, and SZ1053 use
standard terminal designations for wiring. See diagram
below.
Remote temPeRAtURe SenSoR WiRing
Use 18 AWG shielded twisted-pair grounded at the sen-
sor mounting location. Sensor wiring runs of up to 250
feet are attainable 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 SZ1017a, SZ1041, SZ1051, and SZ1053 accept
three 2-wire remote temperature sensors. Consult the
TS Series Temperature Sensor Submittal Data sheet for
a complete listing of packaging and application styles.
When using TCS/Basys Controls three-wire sensors,
use the black and red leads and either clip or twist off
the white lead. Make sure that the dip switches are set
for the sensors you are using.
PoWeRing the
SZ1017a, SZ1041, SZ1051, and
SZ1053
Superstats are powered from 24 VAC +/- 20%.
If wiring for communications, dedicated power must be
used to power the Superstat. Several “S” Series ther-
mostats may be powered from the same transformer,
provided that the transformer has sufficient power.
(Superstats require 8 VA @ 24 VAC.)
Caution:
Do not connect to 120 VAC. When
multiple TCS Basys Controls devices are using
a single transformer, the polarity of the power
wiring must be maintained because all TCS
devices are half-wave rectified and have com-
mon return paths.
When the Superstat is used as a stand-alone thermostat
without communications, the unit 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 unit trans-
former.
Input Wiring for the SZ1017a, SZ1041, SZ1051, and SZ1053