Product Manual
Communicating Thermostats
SZ1063/SZ1064
Modulating Fan Coil Thermostats
Description
The SZ1064 is a microprocessor based programmable modulating
fan coil thermostat and the SZ1063 is a non-programmable modulating fan coil thermostat.
Features
• Stand-alone or network operation
• No battery backup required
• Minimum on/off times for HVAC equipment protection
• 32-character LCD display
• Six status LEDs
• Remote room sensing capability
• User setpoint adjustment limits
• Three speed fan
• System and fan switching with access lockouts
• External input for setback or aquastat changeover
• Access to programming may be locked out or limited with the use
of an access code
• Fahrenheit or Celsius temperature display
• Control for two or four pipe systems
• 7-day programmable time clock
• Optional pipe sensor inputs for changeover (SZ1064 only)
• Adjustable delay on start-up and power-up for soft starts
• Smart recovery (SZ1064 only)
• Local and remote override capability
• External time clock and override options
• Auxiliary output for heat, cool or time clock (SZ1064 only)
Contents
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Checkout & Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
LED Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Mounting
The SZ1063 and 64 are designed for wall mounting using two #6
sheet metal screws, either over a horizontally installed 2" x 4" junction box, or directly to block or drywall.
For best results, the thermostat should be mounted on an interior
wall which reflects normal room environment, at a height of approximately five feet from the floor. Avoid areas exposed to direct sunlight,
unusual heat or cool sources, open doors and windows, unventilated
locations and hot or cold air from diffusers.
If using a remote room sensor, it should be mounted in the manner
described above.The thermostat may then be mounted in an area
which is accessible for adjusting its settings.
2800 LAURA LANE • MIDDLETON, WI 53562 • (800) 288-9383 • FAX (608) 836-9044 • www.tcsbasys.com
Caution: Remove power from thermostat prior to mounting.
1
Wiring
Black
1
For communication wiring, use twisted,
shielded 18 AWG.Must be run separately.
2
Dry momentary contct. 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
Remote
Zone/Return
Air Temp
Pipe Temp
(SZ1064 only)2
REF A B
Up to nominal 28 VAC from equipment transformer.
Black
Red
Red
A B
R
1
G
L ow
G
Me d
C WV
+
-
6
HW V
+
-
6
7
RE F
RE F A B
G
Hi
R G L G M G H
Aux. Relay
Output
(SZ1064 only)
The SZ1063 and SZ1064 use standard terminal designations 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
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 thermostats 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 common 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
transformer.
Output Wiring for the SZ1063 and SZ1064
2800 LAURA LANE • MIDDLETON, WI 53562 • (800) 288-9383 • FAX (608) 836-9044 • www.tcsbasys.com
2
****
*
***
****
**
* When heating and cooling on
a two-pipe unit, use AO2
** When heating only on a
two-pipe unit, use AO1
*** When cooling only on a
two-pipe unit, use AO2
**** Add 500Ω resistor (included
in bag) to convert 0/4 to 20mA
to, 0/2 to 10 VDC.
Setup
OVERRIDE ON
178 MINUTES
F.
program
setup
MOD OUT 1 00%
MOD OUT 2 00%
E.
program
setup
program
setup
PIPE TEMP:
D.
150F
DI3 OPEN
OFF
AUX RELAY
C.
program
setup
program
setup
DI2 OPEN
DI1 OPEN
B.
program
setup
A.
WED FAN:MED
3:27 PM
82F
1 2 3 4 5
high
Occupied
Heating
Cooling
Data / Progra m
Service
CO OL E R
WAR ME R
Fan
fan
medium
fan
low
fan
fan
off
progr am
setu p
OVE R R IDE
Note: If using remote sensor(s), the calibration may need to be
adjusted. See “Checkout and Troubleshooting” section.
TEMPERATURE SENSOR SELECTION
The dipswitches in the cover (shown above) must be set when using
remote room, and/or pipe temp sensors.
Use the following guide to determine the dipswitch settings for
your application.
Using built-in room sensor only. (This
is the default setting.)
Using built-in room sensor with pipe
sensor only. (SZ1064 only)
PROGRAMMING THROUGH THE KEYPAD
To access the programming screens, press the program setup button.
Screens A thru F are monitoring screens and programming screens
begin with #1. Access may be locked out with dipswitches, or an
access code may be required.
Main Monitoring Screen. Press the
program setup button to access the follow-
ing screens. (Day and date not shown on
SZ1063)
Digital Input 1 & 2 Status Screen.
the status of DI1& DI2.
Shows
Using remote room sensor only.
Using remote room sensor with pipe
sensor only. (SZ1064 only)
Once the dipswitches have been set and
you have confirmed that the sensors are
reading correctly, secure the cover to the
base with the two set screws located at
the top right and the left side to prevent
tampering.
Programming
The SZ1063 and SZ1064 may be programmed through the keypad
on the face, or with a PC.
If programming with a PC, the following must be set through the face
prior to programming:
• Address (step #18)
• Baud rate (step #19)
• Temperature scale (step #20)
For more information on programming through the PC, consult your
TCS software manual.
2800 LAURA LANE • MIDDLETON, WI 53562 • (800) 288-9383 • FAX (608) 836-9044 • www.tcsbasys.com
Digital Input 3 Status & Auxiliary Relay
Output Screen.
Shows the status of DI3.
Shows the status of the auxiliary relay out-
put. This can be either a timeclock output,
a stage of heat or a stage of cool. (Aux.
output on SZ1064 only)
Pipe Temperature Screen.
Shows the pipe
temperature if a pipe temperature sensor
is used. (SZ1064 only)
Modulating Output 1 & 2 Status Screen.
Shows the percentage of modulating output
1 (heat) & output 2 (cool).
Override Status Screen.
Shows the status
of the first and second stages of heating.
3
11.
W ED FA N:M E D
3: 27 PM
A :08 :00 TO 1 7:0 0
B :00 :00 TO 0 0:0 0
9.
S ET OC C UP IED
7.
TI ME S TU ES DA Y
A :08 :00 TO 1 7:0 0
B :00 :00 TO 0 0:0 0
5.
TI ME S MO ND A Y:
S ET OC C UP IED
4.
3.
S ET TIM E & D A Y
3: 27 PM
C OP Y M O N FO R
TU E ?
8.
12.
S ET AD DR E SS:
TH U
N O
82 F
00 0
C :00 :00 TO 0 0:0 0
D :00 :00 TO 0 0:0 0
6.
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
C :00 :00 TO 0 0:0 0
D :00 :00 TO 0 0:0 0
10.
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
LI MI T S ET PO IN T:
30.
A DJU S T + /-: 05 F
U NO CC UP IE D CO OL
80 F
29.
24.
U NO CC UP IE D HE AT
S ET PO INT :
S ET UN O CC UP IED
18.
FA N MO D E: AU TO
S ET OC C UP IED F AN
S PE ED : ME D
17.
M OD E: A U TO
S ET OC C UP IED F AN
16.
15.
S ET SY ST EM
M OD E:
S ET UN O CC UP IED
FA N SP EE D:
19.
A UT O
M ED
60 F
S ET PO INT :
O CC UP IE D H EA T
S ET PO INT A : 70 F
20.
O CC UP IE D H EA T
S ET PO INT B : 70 F
21.
O CC UP IE D H EA T
S ET PO INT C : 70 F
22.
O CC UP IE D H EA T
S ET PO INT D : 70 F
23.
25.
O CC UP IE D C O OL
75 F
S ET PO INT A :
26.
O CC UP IE D C O OL
75 F
S ET PO INT B :
27.
O CC UP IE D C O OL
75 F
S ET PO INT C :
28.
O CC UP IE D C O OL
75 F
S ET PO INT D :
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
Acess Code Entry Screen. Will appear if
pr ogr am
se tup
pr ogr am
se tup
B RA NC H TO CL OCK /
2.
S CH . M EN U?
Y ES
E NT ER AC C ES S
00 0
C OD E
1.
N O
O VE RR ID E ON
17 8 MIN U TE S
F.
pr ogr am
se tup
M OD O UT 1 00%
M OD O UT 2 00%
E.
pr ogr am
se tup
pr ogr am
se tup
P IPE TEM P :
D .
15 0F
D I3 O PE N
O FF
A UX RE LA Y
C .
pr ogr am
se tup
pr ogr am
se tup
D I2 OP E N
D I1 OP E N
B.
pr ogr am
se tup
A .
W ED FA N:M ED
3: 27 PM
82 F
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
TE M PS SH O WN IN :
14.
FA H RE NH EI T
S ET BA UD R AT E:
9. 6K
13.
11.
W ED FA N:M E D
3: 27 PM
A :08 :00 TO 1 7:0 0
B :00 :00 TO 0 0:0 0
9.
S ET OC C UP IED
7.
TI ME S TU ES DA Y
A :08 :00 TO 1 7:0 0
B :00 :00 TO 0 0:0 0
5.
TI ME S MO ND A Y:
S ET OC C UP IED
4.
3.
S ET TIM E & D A Y
3: 27 PM
C OP Y M O N FO R
TU E ?
8.
12.
S ET AD DR E SS:
TH U
N O
82 F
00 0
C :00 :00 TO 0 0:0 0
D :00 :00 TO 0 0:0 0
6.
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
C :00 :00 TO 0 0:0 0
D :00 :00 TO 0 0:0 0
10.
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
access code is required for programming.
Use 248 as the default. If the wrong code is
entered, it will revert to Screen ‘A’.
(Scheduling on SZ1064 only)
Programming or Clock / Schedule
Selection Screen. Choose YES here to set
the clock and schedule. Choose NO here to
perform all other programming starting with
step 1. (SZ1064 only)
Time and Day Screen. Set the hour,
minutes, AM or PM, and day of the week.
(SZ1064 only)
Schedule Announcement Screen.
Announces the next screen. (SZ1064 only)
Occupied Times Screen. Set the hours and
minutes of start and end times for up to two
occupied periods. (SZ1064 only)
Occupied Times Screen. Set the hours and
minutes of start and end times for up to two
occupied periods. (SZ1064 only)
Schedule Announcement Screen.
Announces the next screen. (SZ1064 only)
Copy Schedule Screen. Choose to use
the same schedule that was used for the
previous day. If so, the next screen does not
appear. (SZ1064 only)
Occupied Times Screen. Set the hours and
minutes of start and end times for up to two
occupied periods. (SZ1064 only)
Occupied Times Screen. Set the hours and
minutes of start and end times for up to two
occupied periods. (SZ1064 only)
Main Monitoring Screen.
When programming the Clock / Schedule,
this becomes the last screen. You will need
to start over by pressing program setup and
selecting NO at step 2 above to continue to
the Programming screens.
Controller Address Screen. If using a PC to
access the thermostat, set a unique address
from 0 to 255, excluding 248.
2800 LAURA LANE • MIDDLETON, WI 53562 • (800) 288-9383 • FAX (608) 836-9044 • www.tcsbasys.com
Communication Baud Rate Screen. If using
a PC to access the thermostat, all controllers
on a network must be set to the same baud
rate. Choose between 2.4K, 4.8K, 9.6K and
19.2K.
Display Type Screen.
Choose between
FAHRENHEIT and CELSIUS for temperature
indication.
System Mode Screen.
Choose from AUTO,
HEAT, COOL, or OFF for system mode. In the
OFF mode, all outputs are off.
Occupied Fan Mode
Screen. Choose
between ON (continuous) or AUTO for your
fan run times during the occupied modes.
Occupied Fan Speed Screen.
Choose
between LOW, MEDium and HIGH during the
occupied modes.
Unoccupied Fan Mode Screen.
Choose from
AUTO or ON for your fan run times in the
unoccupied mode.
Unoccupied Fan Speed Screen. Choose
between LOW, MEDium and HIGH during the
unoccupied modes.
Occupied Heat Setpoint Screen.
Set the
occupied heat setpoint.
Occupied Heat Setpoint Screen.
Set the
occupied heat setpoint.
Occupied Heat Setpoint Screen.
Set the
occupied heat setpoint.
Occupied Heat Setpoint Screen.
Set the
occupied heat setpoint.
Unoccupied Heat Setpoint Screen.
Set the
unoccupied heat setpoint.
Occupied Cool Setpoint Screen.
Set the
occupied cool setpoint.
4
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
37.
E NA BL E 2 PI PE
S YS TE M?
E NA BL E 3 PI PE
FA N CO IL ? NO
36.
A UX RE LA Y OU TP UT
34.
TI ME CL O CK
A UX RE LA Y
D IFF : 0 1F
33.
O FF SE T: 01F
A UX RE LA Y
32.
31.
S ET OV ER R IDE
TI ME : 1 80 MI NT ES
pr ogr am
se tup
pr ogr am
se tup
TI ME CL O CK OU TP U T
O CC UP IE D=
35.
pr ogr am
se tup
O PE N
N O
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
47.
M OD O UT 2
A CT ION :
M OD O UT 1
A CT ION : D IR EC T
46.
M O1 SE TP O INT
44.
O FF SE T: 00 F
M O2 SE TP O INT
B AN D: 05 F
43.
B AN D: 05F
M O1 PR O PO RT IO NA L
42.
41.
C HA NG EO V ER
S ET PO INT : 0 90F
pr ogr am
se tup
pr ogr am
se tup
M O2 SE TP O INT
O FF SE T:
45.
pr ogr am
se tup
48.
M OD O UT 1
pr ogr am
se tup
00 F
D IRE CT
R AN GE : 0- 20 mA
Occupied Cool Setpoint Screen. Set the
LI MI T S ET PO IN T:
30.
A DJU S T + /-: 05 F
U NO CC UP IE D CO OL
80 F
29.
S ET PO INT :
26.
O CC UP IE D C O OL
75 F
S ET PO INT B :
27.
O CC UP IE D C O OL
75 F
S ET PO INT C :
28.
O CC UP IE D C O OL
75 F
S ET PO INT D :
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
D I1 F OR
40.
C OO LIN G : N .C .
A QU AS TA T
D IGI TA L
39.
37.
E NA BL E 2 PI PE
S YS TE M?
E NA BL E 3 PI PE
FA N CO IL ? NO
36.
A UX RE LA Y OU TP UT
34.
TI ME CL O CK
A UX RE LA Y
D IFF : 0 1F
33.
O FF SE T: 01F
A UX RE LA Y
32.
31.
S ET OV ER R IDE
TI ME : 1 80 MI NT ES
pr ogr am
se tup
pr ogr am
se tup
TI ME CL O CK OU TP U T
O CC UP IE D=
35.
pr ogr am
se tup
38.
S ELE C T 2 PI PE
pr ogr am
se tup
O PE N
N O
C ool
M OD E:
occupied cool setpoint.
2-Pipe Fan Coil Control Screen. For a two-pipe
fan coil, select whether it is a HEAT only system,
COOL only system, or whether the system is capable
of heating and cooling H&C. If HEAT or COOL is
selected, skip to step 42.
Occupied Cool Setpoint Screen. Set the
occupied cool setpoint.
Occupied Cool Setpoint Screen. Set the
occupied cool setpoint.
Unoccupied Cool Setpoint Screen. Set the
unoccupied cool setpoint.
User Setpoint Limit Screen. Enter the number of
degrees you want the user to be allowed to change
the preset occupied setpoints up or down.
Override Time Screen. Enter the number of
minutes (0 to 255) that the thermostat will maintain
occupied setpoints when overridden.
Auxiliary Relay Offset Screen. Enter an offset
value for the auxiliary relay. This screen is not used
if step 26 is set to TIMECLOCK. (SZ1064 only)
2800 LAURA LANE • MIDDLETON, WI 53562 • (800) 288-9383 • FAX (608) 836-9044 • www.tcsbasys.com
Auxiliary Relay Differential Screen.
ferential value for the auxiliary relay. This screen is
not used if step 26 is set to TIMECLOCK. (SZ1064
only)
Auxiliary Relay Output Screen. Choose
whether the auxiliary output will be used for either a
TIMECLOCK output, a stage of HEAT or a stage of
COOL. (SZ1064 only)
Time Clock Output Screen.
auxiliary output will be OPEN or CLOSED during
occupied periods. This screen is not used if step 26
is set to HEAT or COOL. (SZ1064 only)
3-Pipe Fan Coil Enable Screen.
using a three-pipe system. Otherwise choose NO.
If YES is selected, skip to step 42.
2-Pipe Fan Coil Enable Screen.
if using a two-pipe system. Otherwise choose NO.
If NO is selected, and skip to step 42 and it is
assumed to be a four-pipe system.
Enter a dif-
Choose whether the
Choose YES if
Choose YES
Aquastat Mode Screen. With a two-pipe system
choose whether the Aquastat function is DIGITAL
(DI1) or ANALOG (T2). If analog is selected, skip to
step 41 (SZ1064 only)
Digital Aquastat Input Screen. Choose whether
DI1 will be normally open (N.O.) or normally closed
(N.C.) for cooling. The next screen is skipped.
Analog Aquastat Input Screen.
If an analog aqua-
stat is selected, choose the changeover setpoint to
distinguish when hot or cold water is available. If
the 'pipe' temperature is below this setpoint, analog
output 2 will do cooling. If the 'pipe' temperature is
above this setpoint, analog output 2 will do heating.
(SZ1064 only)
Modulating Output 1 Proportional Band Screen.
Enter the number of degrees away from the heating
setpoint that the valve will be fully open.
Modulating Output 2 Proportional Band Screen.
Enter the number of degrees away from the cooling
setpoint that the valve will be fully open.
Modulating 1 Setpoint Offset Screen.
Enter an
offset value for modulating output 1. This is the
number of degrees below the heating setpoint
before the output begins to modulate.
Modulating 2 Setpoint Offset Screen. Enter an
offset value for modulating output 2. This is the
number of degrees above the cooling setpoint
before the output begins to modulate.
Modulating 1 Output Action Screen. Choose
whether modulating output 1 will be direct or
reverse acting.
Modulating 2 Output Action Screen.
Choose
whether modulating output 2 will be direct or
reverse acting.
Modulating Output 1 Range Screen.
Choose
whether the modulating output 1 range will be 0-20
mA or 4-20 mA.
5
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
pr ogr am
se tup
M OD O UT 1 UNO C C
50.
A CT ION : 0 o r 4 m A
M OD O UT 2
0- 20 mA
49.
47.
M OD O UT 2
A CT ION :
M OD O UT 1
A CT ION : D IR EC T
46.
M O1 SE TP O INT
44.
O FF SE T: 0 0F
M O2 SE TP O INT
B AN D: 05 F
43.
B AN D: 05F
M O1 PR O PO RT IO NA L
42.
41.
C HA NG EO V ER
S ET PO INT : 090 F
pr ogr am
se tup
pr ogr am
se tup
M O2 SE TP O INT
O FF SE T:
45.
pr ogr am
se tup
48.
M OD O UT 1
pr ogr am
se tup
00 F
D IRE CT
R AN GE : 0-2 0m A
R AN GE :
pr og ram
se tup
pr og ram
se tup
pr og ram
se tup
pr og ram
se tup
57.
S ET AC CE SS
C OD E:
R EQ UIR E C OD E FO R
P R OG RA M M ING ?Y ES
56.
D EL AY O N PO WE R UP
54.
01 0 SECO ND S
D I3 U S E D F OR :
M O NITO R
53.
S H IFT : 00F
S ET DI2 S ET PO IN T
52.
51.
M OD O UT 2 U N OC C
A C TIO N: 0 or 4 m A
pr og ram
se tup
pr og ram
se tup
E N AB LE SM AR T
R EC OV ER Y?
55.
58.
W ED F AN :M ED
pr og ram
se tup
Y ES
24 8
3: 27PM 8 2F
Modulating Output 2 Range Screen. Choose
whether the modulating output 2 range will be 0-20
mA or 4-20 mA.
Modulating Output 1 Unoccupied Action
Screen. Choose whether the modulating output 1
unoccupied action will be 0mA or 4mA, 20mA or
MODulating.
Modulating Output 2 Unoccupied Action
Screen. Choose whether the modulating output
2 unoccupied action will be 0mA or 4mA, 20mA or
MODulating.
DI2 Shift Screen. Enter the setpoint shift value.
This screen will only appear if DI2 is set to
MONITOR.
DI3 Choice Screen.
EXTernal OVERRIDE, or EXTernal TIME CLOCK.
Select EXTernal OVERRIDE if unused. (EXTernal
OVERRIDE on SZ1064 only)
Delay On Powerup Screen. Enter a value in
seconds, such that when the unit is powered up
or on occupied startup, control is delayed for this
amount of time.
Smart Recovery Screen. Choose whether or not
smart recovery will be used. Note: Smart Recovery
is not available when DI3 is used as EXTernal
TIME CLOCK. (SZ1064 only)
Programming Access Screen. Choose whether
or not a code will be required to enter program-
ming setup.
Access Code Screen. Enter an access (0 to 255)
code that will be used to enter the programming
setup if access code has been required in the last
two step. The default is 248.
Main Monitoring Screen.
Choose FILTER SERVICE,
Setting Clock & Schedule
The SZ1064 clock and schedule may be set through the keypad and
display, or with a PC. For more information on programming through
the PC, consult your TCS software manual.
SETTING CLOCK & SCHEDULE
THROUGH THE KEYPAD
To access the clock and schedule screens in step #2 select yes. To
make changes, use the warmer and cooler keys. For screens that
have more than one field to set, use the override key to move to the
next field. An access code may be required.
Operation
UNOCCUPIED SETBACK
The SZ1063 and SZ1064 operates, in either an occupied or unoccupied mode. During the occupied mode, the occupied heating and
cooling setpoints will be maintained, and the fan will operate according to its occupied setting. During the unoccupied mode, the unoccupied heating and cooling setpoints will be maintained, and the fan
will operate according to its unoccupied setting. The occupied LED
will be lit when the unit is operating in the occupied mode.
The occupied schedule may be set utilizing the internal time clock
(SZ1064 only) or DI3 may be used with an external time clock,
whereas when DI3 is closed, the unit is in the occupied mode. The
Smart Recovery function is disabled when DI3 is used for external
time clock.
OVERRIDE
A timed override is available using the button on the face of the thermostat or through momentary contacts wired into the OVR terminal.
The amount of time the unit will be overridden is set from 0 to 255
minutes in the programming screen. This override behaves differently depending on the mode the thermostat is operating in (occupied or
unoccupied) and the options that have been enabled within the software. In standard mode, the override only activates in unoccupied
mode and takes the thermostat into occupied mode. If "Override for
Occupied Period" is enabled, the override also activates in occupied
mode and takes the thermostat into unoccupied mode. In either
case, you are able to view the time remaining in the override period
both within the software and by using the service button to scroll
through the status screens. If the occupant desires to return the thermostat to unoccupied or occupied operation (depending on how the
override was used) before the time interval is up, they may press the
override again. If "Continuous Occupied Override" or "Continuous
Unoccupied Override" is enabled, then pressing the override once
and then pressing and holding it for 5 seconds puts the thermostat
into a "hold” mode (the override LED on the thermostat will flash
quickly). In this mode, the override setpoints are used until the next
occupied period is reached, or until the thermostat is manually taken
out of the "Continuous Override" mode by pressing the override
again.
Continuous override is available through the DI3 contact or the
software. If DI3 is set to external override, the unit will be in the
occupied mode whenever the DI3 contact is closed. When using this
option, the timed override may still be activated.
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6
The software allows you to override the thermostat by putting the
override parameter into the remote mode, and thus disabling the timed
override.
SETBACK AND OVERRIDE APPLICATIONS
In most applications, it is desired to maintain a regular schedule,
and allow timed override with the button on the face or with a remote
momentary contact.
FOUR-PIPE FAN COIL OPERATION
For four-pipe fan coil operation, in step #28 select NO. In step #29,
select NO.
Four-pipe fan coil operation assumes that there are two water sources available (hot and cold), that are each controlled by its own valve.
Analog output one is used for heating and analog output two is used
for cooling.
To allow a regular schedule, and also automatically override with the
use of occupancy or light sensor, set DI3 to override and set it up so
that the contact is closed when you want the override.
For applications where a room might not be used on a regular schedule, such as conference rooms, set DI3 to external time clock and
close the contact when you want the room occupied, such as with a
switch or wind-up timer. If each occupancy period is about the same,
(theaters, meetings) another option is to set the DI3 to external time
clock, and use the timed override button to put the unit in occupied
mode.
To make the unit always occupied, set DI3 to external time clock and
short the DI3 terminal to ground.
TWO-PIPE FAN COIL OPERATION
For two-pipe fan coil operation, in step #28 select NO. In step #29,
select YES. You must then select whether the system is HEATing only,
COOLing only or heating and cooling (H&C) in step #30.
When using a two-pipe system to do both heating and cooling, the
SZ1063 and SZ1064 need to know whether hot or cold water is available. This is accomplished by either the use of a mechanical aquastat
(bulb thermostat) connected to terminals DI1 and 24-, or by the use of
a temperature sensor connected to T2 and T2 (SZ1064 only). If using
a mechanical thermostat, select DIGITAL in step #31, and select normally closed N.C. or normally open N.O. In step #32. If using a temperature sensor, select ANALOG in step #31 and place a changeover
setpoint in step #33. When the temperature is greater than this setpoint, it is assumed hot water is available and heating is done. When
the temperature is less than this setpoint, it is assumed cold water is
available and cooling is done.
When using a two-pipe system to do both heating and cooling, only
AO2 is used. When using a two-pipe system to do only heating, only
AO1 is used. When using a two-pipe system to do only cooling, only
AO2 is used.
THREE-PIPE FAN COIL OPERATION
For three-pipe fan coil operation, in step #28 select YES.
Three-pipe fan coil operation assumes that there are two water
sources available (hot and cold), and that the water to the fan coil will
be a mixture of these. Only analog output two is used for three-pipe
operation. The output will be 12mA (4-20mA) when there is no need
for heating or cooling. As there becomes a need for heating or cooling, the analog output modulates toward 4mA or 20mA depending on
whether analog output two is direct or reverse acting.
PIPE TEMPERATURE SENSING
The SZ1063 and SZ1064 accepts a remote pipe temperature sensor for monitoring purposes or for changeover in a two-pipe system.
(See setup instructions for dipswitch placement for this option.)
The pipe temperature span is 0 to 150°F (-17.8 to 65.6°C).
ANALOG OUTPUTS
The analog outputs on the SZ1063 and SZ1064 are used to control
the heating and cooling in a space. Analog output 1 is used to control
heating and analog two is used to control cooling with a four pipe
system. Only analog output 2 is used with a three-pipe or with twopipe system set for heat and cool (H&C).
DI2 SETPOINT SHIFT
The SZ1063 and SZ1064 allow DI2 to be set for setpoint shift for
energy demand setback. A digital contact that closes when setback
is needed should be wired into DI2. You may specify a number of
degrees such that, when the thermostat is operating in the occupied mode, and DI2 is closed, the heating setpoint will be lowered
this number of degrees, and the cooling setpoint will be raised this
number of degrees. The fan will continue to operate according to its
occupied setting. If you are using DI2 as monitor for another purpose, make sure to set the setpoint shift value to zero.
AUXILIARY RELAY OUTPUT PARAMETERS
The auxiliary relay of the SZ1064 will control one stage of either
heating or cooling, or can be used as a timeclock output.
If the auxiliary relay is used as heating or cooling stage, you may
specify an offset and a differential value. The offset value is the
amount away from the setpoint a stage will turn off. By assigning a
value other than zero, you "anticipate" that the residual heat or cooling in the duct will bring the temperature back to setpoint. In most
cases, a first stage is set to zero. The differential value is the difference between the on and off points. Using an offset value greater
than or equal to the proportional band of an analog output will allow
the relay to come on after full modulation is achieved. Strip heat, for
example.
If the auxiliary relay is used as a timeclock output, it is selectable
whether the relay is open or closed during the occupied period.
During the unoccupied period, the opposite will occur.
Keep in mind that although it is an isolated relay (separate common
terminal), it is rated at 24 VAC @ 2A. For loads that exceed this, use
an external relay.
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7
ANALOG OUTPUT PARAMETERS
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 2 0
4 2 0
4 2 0
4 2 0
4 2 0
4 2 0
P
Z
o
n
e
T
e
m
p
Ou tpu t
( mA )
P
Ou tpu t
( mA )
DIR EC T A CT ING
REV ER SE A CT ING
P
P
Ou tpu t
( mA )
Ou tpu t
( mA )
Z
o
n
e
T
e
m
p
P
P
Ou tpu t
( mA )
Ou tpu t
( mA )
P
P
Z
o
n
e
T
e
m
p
CS P
CS P
HS P HS P
CS P
CS P
HS P HS P
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 unoccupied 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.)
SMART RECOVERY
Smart Recovery may be enabled (SZ1064 only). It ramps the setpoint 4°F/hr. when going from the unoccupied and mode to the occupied 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.
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.
2800 LAURA LANE • MIDDLETON, WI 53562 • (800) 288-9383 • FAX (608) 836-9044 • www.tcsbasys.com
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.
* SZ1064 *
TCS V2.0 (c)
MON FAN:MED
12:00AM 72F
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
8
button once more to store the change. Then press the FAN OFF button once to exit the programming.
LIMIT SETPOINT
ADJUST +/-: 5F
modes. Also, check the heating and cooling setpoints, offsets and
differentials, and the room temperature to be sure heating or cooling
should be on.
Wrong Temperature Display
4. Verify that the thermostat is operating in the occupied mode by
making sure that the top LED is lit. If not, press the OVERRIDE button. The LED should light up.
5. Take note of the current temperature reading. Press the
WARMER (up) button. The setpoint adjustment screen should now
be showing. Press the WARMER button until the heating setpoint is
greater than the current temperature by at least five degrees. The fan
will come on. The auxiliary relay if set to heating will come on after
30 seconds.
6. Press the cooler (down) button until the heating setpoint is one
degree less than the current temperature. The heating stage will
sequence off. The fan will turn off 2 minutes afterwards.
7. Press the cooler button until the cooling setpoint is less than the
current temperature by at least five degrees. The fan will come on.
The auxiliary relay if set to cooling will come on after 30 seconds.
8. Press the warmer button until the cooling setpoint is greater
than the current temperature by one degree. The cooling stage will
sequence off. The fan will turn off 2 minutes afterwards.
9. For a heating or cooling analog output: Take note of the room (and
discharge) air temperatures. If the analog output is set for Cooling,
press the Cooler button until the cooling setpoint is less than the current room temperature by at least 5°. The cooling device should start
operating. If the analog output is set for Heating, press the Warmer
button until the heating setpoint is greater than the current room temperature by at least 5°. The heating device should start operating.
10. Go back to programming step #22 and set the setpoint adjust
limit back to the desired value. Make any other changes in programming, clock, and schedule. Set the fan and system modes to their
desired settings.
11. If using remote sensor(s), verify that the reading is correct. If not,
see Wrong Temperature Display in Troubleshooting section.
1 2 3 4 5
T2
T3
T1
1 2
adjust display contrast
If any of the temperatures are reading slightly high or low, there are
three adjustment pots located in the cover to adjust them. "T1" is for the
room temperature and "T2" is for the pipe temperature. If the temperature is at a minimum or maximum reading, check the sensor dipswitch
positions. (See setup instructions.) Check for wiring problems (opens
or shorts). A remote 1000 ohm sensor should read 1082 ohms at 70°F
(21.1°C).
Outputs Will Not Shut Off
First check the room temperature and the setpoints and determine
whether the output should be on. There are delays and minimum on
and off times for the fan and heating and cooling stages. Also, check
the service status menus to verify that the outputs are on. Turning
the system to "off" will instantly turn all outputs off. The thermostat
can be reset by pressing the system switch button and the service
status button simultaneously.
Analog Output Not Working Properly
Check wiring. A separate transformer should be used for the SZ1063
and SZ1064, and a separate transformer should be used for the
motor(s). Check to make sure that the analog output is programmed
correctly.
Check the Monitoring screens. The Mod Out Screens will tell you
what the SZ1063 and SZ1064 is trying to put out. Compare this with
the actual position on the heating or cooling device.
TROUBLESHOOTING
No Display
Check for 24 VAC on terminals "+24" and "-24". Check the cable
connecting the cover to the base for a good connection.
Fan Does Not Come On
The fan is on whenever the fan LED is on. If the fan should be on,
but the fan LED is off, check the occupied and tunoccupied fan mode
in programming. If the Fan Status is OFF, press the Low, Medium
or High button. If the fan is off but the fan LED is on, check wiring.
Short terminals "R" to "GL", "GM" or "GH" and see if the fan comes
on. This is a check for a mechanical relay failure.
Heating or Cooling Does Not Come On
Heating is on whenever the heating LED is on, and cooling is on
whenever the cooling LED is on. If heating or cooling should be
on but the heating or cooling LED is off, check the fan and system
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Output Operation is not Correct
Check programmed parameters, in particular "Reverse" and "Direct"
acting selections and "Heat" or "Cool" selections for the analog outputs, and "Offset"and "Differential" selections and "Delay Times" for
the relay outputs. Check wiring.
LED Description
Six LEDs on the face allow the occupant to view the current
operating status of the thermostat.
OCCUPIED
This LED will be lit whenever the unit is operating in the occupied
mode.
HEATING
This LED will be lit when any heat output is operating.
9
COOLING
This LED will be lit when any cool output is operating.
DATA / PROGRAM
This LED will be lit when the thermostat is within the programming or
clock setup menus. It will blink when the unit is being accessed by a
PC.
SERVICE
This LED will be lit when DI2 is closed.
FAN
This LED will be lit when the fan output is closed.
Limiting Occupant Access
SETPOINT ADJUSTMENT
The occupant may temporarily change the occupied heating and
cooling setpoints +/- 5°F by factory default. This setpoint change will
remain until the end of the current occupied period, at which time the
program reverts to the setpoints defined in programming. To change
the range of adjustment allowed, see programming step #22.
OVERRIDE
The occupant has the ability to put the unit into occupied mode by
pressing the override button on the front. By factory default, the unit
will remain in the occupied mode for 180 minutes. This value may be
changed from 0 to 255 minutes in programming step #23.
SETTING CLOCK & SCHEDULE
The ability to set the clock and schedule is allowed by factory default.
An access code may be required as set in programming step # 49.
PROGRAMMING
The ability to program control parameters is allowed by factory
default. An access code may be required as set in programming step
# 49.
User’s Guide
Inside the hinged door of the thermostat is the SuperstatTM User's
Guide. This guide is designed to assist the installer in explaining to
the end user how to operate their new thermostat, as well as serve
as a handy future reference for the end user.
We recommend that the installer fill out the appropriate pages and
explain to the user how the thermostat operates, what settings may
be changed, and how the time clock schedules are used.
C3587_REV1
2800 LAURA LANE • MIDDLETON, WI 53562 • (800) 288-9383 • FAX (608) 836-9044 • www.tcsbasys.com
Rev:1208
10
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