2800 LAURA LANE
❘
MIDDLETON, WI 53562
❘
(800) 288-9383
❘
FAX (608) 836-9044
❘
www.tcs-basys.com
2
Wiring
The SZ1017a, SZ1041, SZ1051 and SZ1053 use standard ter-
minal designations for wiring. See diagram below.
REMOTE TEMPERATURE SENSOR WIRING
Use 18 AWG shielded twisted-pair grounded at the sensor
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 list-
ing 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 thermostats may be
powered from the same transformer, provided that the trans-
former has sufficient power. (Superstats require 8 VA @ 24
VAC.)
Caution:
Do not connect to 120 VAC. When mul-
tiple 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 common return paths.
When the Superstat is used as a stand-alone thermostat with-
out 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 transformer.
1
For communication wiring, use twisted, shielded 18 AWG.
Must be run separately.
2
Dry momentary contact. Must not be powered.
3
24 VAC transformer. See powering instructions.
4
5
Sensor input wiring 18 AWG, twisted, shielded pair.
Dry contact. Must not be powered.
6
4 to 20 mA output. 600 ohm max. Do not power actuator with
power from the thermostat. The thermostats are half-wave
rectified, whereby the power ground is common with the signal
ground.
3
4
4
4
5
5
5
Remote
Zone/Return
Air Temp
Discharge
Air Temp
Outside
Air Temp
2
Input Wiring for the SZ1017a, SZ1041,
SZ1051 and SZ1053
For communication wiring, use twisted, shielded 18 AWG.
Must be run separately.
Dry momentary contct. Must not be powered.
24 VAC transformer. See powering instructions.
Dry contact. Must not be powered.
Sensor input wiring 18 AWG, twisted, shielded pair.
4 to 20 mA output 600 ohm max. Do not power actuator with power
from the thermostat. The thermostats are half-wave rectified, whereby
the power ground is common with the signal ground.
Up to nominal 28 VAC from equipment transformer.
