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Wiring - TCS SZ1063 Product Manual

Modulating fan coil thermostats

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Wiring

The SZ1063 and SZ1064 use standard terminal desig-
nations for wiring. See diagram below.
REMOTE SENSOR WIRING
The SZ1063 accepts one 1000 ohm two-wire platinum
sensor and the SZ1064 accepts two. Use TS1009,
TS1002 with TQ Series Immersion wells or TS1005 for
water temperature sensing.
When using TCS/Basys Controls three-wire sensors, use
the black and red leads, and either clip or twist off the
white lead. The wiring length should not exceed 250 ft.
Input Wiring for the SZ1063 and SZ1064
Output Wiring for the SZ1063 and SZ1064
2800 LAURA LANE • MIDDLETON, WI 53562 • (800) 288-9383 • FAX (608) 836-9044 • www.tcsbasys.com
3
4
4
For communication wiring, use twisted,
1
shielded 18 AWG.Must be run separately.
Dry momentary contct. Must not be
2
powered.
24 VAC transformer. See powering
3
instructions.
4
Dry contact. Must not be powered.
1
G
G
R
Low
Med
7
POWERING THE SZ1064
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.
5
Remote
Pipe Temp
Zone/Return
(SZ1064 only)
4
2
Air Temp
Sensor input wiring 18 AWG, twisted, shielded pair.
5
4 to 20 mA output 600 ohm max. Do not power
6
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.
*
Aux. Relay
G
***
CWV
Output
-
Hi
(SZ1064 only)
+
6
****
****
R GL GM GH
2
5
* When heating and cooling on
**
HWV
a two-pipe unit, use AO2
-
+
6
** When heating only on a
two-pipe unit, use AO1
*** When cooling only on a
two-pipe unit, use AO2
**** Add 500
resistor (included
in bag) to convert 0/4 to 20mA
to, 0/2 to 10 VDC.

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This manual is also suitable for:

Sz1064