SmARt ReCoveRy
Smart Recovery may be enabled (SZ1064 only). It ramps the set-
point 4°F/hr. when going from the unoccupied and mode to the occu-
pied mode. At the beginning of the occupied mode, the occupied
setpoint will be reached, many times without the need for the second
stage to come on. This feature is automatically disabled when DI3 is
set to external time clock.
BUilt-in delAyS
The SZ1063 and SZ1064 have delays built into the programming
sequences to protect equipment. The fan has a minimum on and
off time of 30 seconds. When the fan is in AUTO mode, it will come
on 30 seconds before the heating or cooling devices are allowed to
sequence on. The auxiliary relay, when set to be a stage of heat or
cool, has a minimum on and off time of two minutes.
delAy on PoWeRUP
The SZ1063 and SZ1064 have an adjustable delay on powerup and
start-up. When several thermostats are used at one location, and
the power goes out, most thermostats turn all of the units back on at
the same time on regain of power, creating a peak. The thermostat
allows you to set a value, in seconds, where no outputs are allowed
to turn on for that length of time on powerup. Setting each unit to a
different delay allows you to soft start your system, and thus prevent
this peak. This function also occurs when an occupied period
begins to prevent all units from starting at the same time.
Checkout & Troubleshooting
CheCkoUt
1. Be sure to check and verify all wiring before powering the SZ1063
and SZ1064.
NOTE: The fan has a minimum on and off time of 30 seconds. The
auxiliary relay when set for heating or cooling has a minimum on
and off time of 2 minutes.
NOTE: The SZ1063 does not show the day or time.
2. Turn power on. The thermostat will display a momentary screen
with the model number, and then the main monitoring screen with
the time, day, fan speed and current temperature.
3. Press the PROGRAM SETUP button until you reach screen #13
and set the System Mode to AUTO. Continue on until you reach
screen #14 and set the Occupied Fan Mode to AUTO. Go to screen
#22 which allows you to set the occupant setpoint adjustment limits.
Change this to +/-20 °F (11.1 °C). Press the PROGRAM SETUP
2800 LAURA LANE • MIDDLETON, WI 53562 • (800) 288-9383 • FAX (608) 836-9044 • www.tcsbasys.com
8
AnAlog oUtPUt PARAmeteRS
Use programming steps #34 through #43 to program the operating
parameters for the analog outputs. Select direct or reverse action.
Select whether you want the analog output to modulate from 4 to
20mA or 0 to 20mA. Select the unoccupied action ("20mA or 0 /
4mA" will hold the analog output device open or closed during unoc-
cupied times. "Modulating" will modulate the analog output device
to maintain the unoccupied heating or cooling setpoint.). Enter a
proportional band (throttling range) in degrees. Enter a setpoint offset
in degrees. (This is a value below the heating setpoint or above the
cooling setpoint where the analog output begins to modulate.)
di1 AQUAStAt
DI1 is used as an aquastat input for two-pipe fan coil systems.
It is selectable in programming step #32 whether a closed contact
indicates cooling or an open contact indicates cooling.
heat
Setpoint
Cool
Setpoint
on
on
oFF
oFF
differential
differential
offset
offset
Aux. Relay
Aux. Relay
differential
on
oFF
Cool
differential
on
oFF
heat
4 20
4 20
4 20
4 20
4 20
4 20
P
Z
o
n
e
T
e
m
p
Output
(m A)
P
Output
(m A)
diReCt ACting
ReveRSe ACting
P
P
Output
(m A)
Output
(m A)
Z
o
n
e
T
e
m
p
P
P
Output
(m A)
Output
(m A)
P
P
Z
o
n
e
T
e
m
p
CSP
CSP
hSP
hSP
CSP
CSP
hSP
hSP
MON FAN:MED
12:00AM
72F
* SZ1064 *
TCS V2.0 (c)
