S&P STC7D-W User manual

STC7D-IOM_v.1 / 03-2023
STC7D-W
Digital Time Clock for TRC500 & TRC800
READ AND SAVE THESE INSTRUCTIONS
The purpose of this manual is to aid in the proper installation and operation of fans
manufactured by S&P. These instructions are intended to supplement good general
practices and are not intended to cover detailed instruction procedures, because of
the wide variety and types of fans manufactured by S&P.

Installation Instructions
STC7D-W
1. WARNINGS
READ AND SAVE THESE INSTRUCTIONS. FAILURE TO COMPLY WITH
INSTRUCTIONS COULD RESULT IN PERSONAL INJURY
AND/OR PROPERTY DAMAGE!
WARNING: TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK OR INJURY, OBSERVE THE
FOLLOWING:
1. Use this unit only in the manner intended by the manufacturer. If you have questions, contact
the manufacturer.
2. Before installing, servicing or troubleshooting the transformer/relay package, switch power o󰀨
at service panel and lock service panel to prevent power from being switched onaccidentally.
CAUTION: more than one disconnect switch may be required to de-energize the equipment for
servicing.
3. Installation work and electrical wiring must be done by qualied person(s) in accordance with all
applicable codes and standards, including re-rated construction.
4. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden
utilities.
5. NEVER place a switch where it can be reached from a tub or shower.
6. Intended for use with 24VAC Class 2 power supplies only.
7. Do not connect loads that exceed the timer’s switch rating.
8. Conrm su󰀩cient 24VAC power is available to operate the timer and the connected loads.
2. SPECIFICATIONS
Operating Voltage 24VAC 50/60Hz
Switching Single Pole, Single Throw [SPST] (can be eld-modied to Single Pole,
Double Throw [SPDT])
Power Consumption 3.5VA
Switch Rating 10 Amps at 131°F
Operating
Temperature Range 14°F – 131°F
Connections
(STC7D-W) (3) 16 GA pigtails (wire nuts not provided)
Backup Power Lithium battery with minimum 5-year reserve, 10-year projected life, not
eld-replaceable
Setting Options
• 8 pairs of on-o󰀨 time of day cycles can be programmed.
• Each on-o󰀨 cycle can be assigned to any one day of the week, or to
the following groups of days:
• Monday – Friday; Monday – Saturday; Monday – Sunday; Saturday
and Sunday.
• Manual Over-ride provided by “On/Auto/O󰀨” switch.
• Program Reset button clears all settings.
Enclosure
(STC7D-W)
Requires a 4” x 4” electrical box by others.
Box must accommodate (4) mounting screws (see drawing).
Minimum box depth 1.5”. White wall plate and mounting screws provided.
1

2
Installation Instructions
STC7D-W
1. WARNINGS
READ AND SAVE THESE INSTRUCTIONS. FAILURE TO COMPLY WITH
INSTRUCTIONS COULD RESULT IN PERSONAL INJURY
AND/OR PROPERTY DAMAGE!
WARNING: TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK OR INJURY, OBSERVE THE
FOLLOWING:
1. Use this unit only in the manner intended by the manufacturer. If you have questions, contact
the manufacturer.
2. Before installing, servicing or troubleshooting the transformer/relay package, switch power o󰀨
at service panel and lock service panel to prevent power from being switched on accidentally.
CAUTION: more than one disconnect switch may be required to de-energize the equipment for
servicing.
3. Installation work and electrical wiring must be done by qualied person(s) in accordance with all
applicable codes and standards, including re-rated construction.
4. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden
utilities.
5. NEVER place a switch where it can be reached from a tub or shower.
6. Intended for use with 24VAC Class 2 power supplies only.
7. Do not connect loads that exceed the timer’s switch rating.
8. Conrm su󰀩cient 24VAC power is available to operate the timer and the connected loads.
2. SPECIFICATIONS
Operating Voltage 24VAC 50/60Hz
Switching Single Pole, Single Throw [SPST] (can be eld-modied to Single Pole,
Double Throw [SPDT])
Power Consumption 3.5VA
Switch Rating 16 Amps at 131°F
Operating
Temperature Range 32°F – 140°F
Connections
(STC7D-W) (3) 16 GA pigtails (wire nuts not provided)
Backup Power Lithium battery with minimum 5-year reserve, 10-year projected life, not
eld-replaceable
Setting Options
• 16 pairs of on-o󰀨 time of day cycles can be programmed.
• Each on-o󰀨 cycle can be assigned to any one day of the week, or to
the following groups of days:
• Monday – Friday; Monday – Saturday; Monday – Sunday; Saturday
and Sunday. Monday-Wednesday; Thursday-Saturday; Monday/
Wednesday/Friday; Tuesday/ Thursday/Saturday.
• Manual Over-ride provided by “On/Auto/O󰀨” switch.
• Program Reset button clears all settings. First, using a small pointed
object push the reset button to clear all settings. The reset button is
just above the "MIN" dark gray button.
Enclosure
(STC7D-W)
Requires a 4” x 4” electrical box by others.
Box must accommodate (4) mounting screws (see drawing).
Minimum box depth 1.5”. White wall plate and mounting screws provided.

3
CONNECTION DIAGRAM
Applicable to TRC500 and TRC800 models
STC7D-W showing plate dimensions and
screw spacings.
1
2
3
4
5
C
C
YEL
YEL
YEL
BLUERED
RED
ERV INTERNAL CONTROL
WIRING (SIMPLIFIED)
ERV INTERNAL CONTROL
WIRING (SIMPLIFIED)
Unit’s 24VAC
Power Supply
Isolation
Relay Coil
Unit’s 24VAC
Power Supply
Isolation
Relay Coil
The Normally Closed contacts of one or
more additional Low V oltage Controls may
be connected to E RV unit in parallel with
the STC&D-W.
The Normally Closed contacts of one or
more additional Low V oltage Controls may
be connected to E RV unit Terminals 1 &
4. Do not apply power to these terminals.
BLACK
STC7D-W
1
2
3
4
5
YEL
1
2
3
4
5
RED
BLACK
STC7D-W
3. DIMENSION DRAWINGS
Applicable to TRC500 and TRC800 models

4
4. SETTING INSTRUCTIONS
Set Time and Day
Slide Set switch to press 1…7 button until
arrow points to the correct day (1=Monday).
Press hthen mbuttons to set correct time. PM
indicator shows noon to 11:59 PM. Slide Set
switch to Run. Clock colon will blink.
Set Switch “On” Cycle
Slide Set switch to P. A “1” indicates the rst
switch cycle and a “Bulb” indicates a switch-on
(circuit closes). Press 1…7 button until arrows
point to selected day(s) for this cycle. Press h
and mbuttons to show switch-on time, noting
PM indicator.
Set Switch “O󰀨” Cycle
With Set switch at P, press Pbutton, note
switch cycle number changes to “2” and Bulb
blinks, indicating switch-o󰀨 (circuit opens).
Press 1…7 button to match day(s) set for switch
cycle “1”. Press hand mbuttons to select
switch-o󰀨 time.
Autorun
Slide Set switch to Run and Mode switch to
Auto, switching begins with next switch-on set
time.
Override “On” Slide Mode switch to "I". Switch remains on
indenitely (circuit closed).
Override “O󰀨” Slide Mode switch to "O". Switch remains on
indenitely (circuit open).
Skip Cycle In automatic run mode, press "x→" button. The
next calendar day is skipped.
Setting ERROR
If EEE appears, a setting error exists. The
switch cycle number in error is shown. Slide
set switch to P, press Pbutton until cycle is
shown, review this and the following setting to
correct error, slide set switch to Run.
Clear any setting
Setting slide set switch to P, press Pbutton to
show switch cycle to clear. Press the Pbutton
and the skip (x) button simultaneously, hold for
several seconds.
Clear All To erase all settings, Press "R".

5
3. CONNECTION DIAGRAM
Applicable to TRC500 and TRC800 models
STC7D-W showing plate dimensions and
screw spacings.
1
2
3
4
5
C
C
YEL
YEL
YEL
BLUERED
RED
ERV INTERNAL CONTROL
WIRING (SIMPLIFIED)
ERV INTERNAL CONTROL
WIRING (SIMPLIFIED)
Unit’s 24VAC
Power Supply
Isolation
Relay Coil
Unit’s 24VAC
Power Supply
Isolation
Relay Coil
The Normally Closed contacts of one or
more additional Low V oltage Controls may
be connected to E RV unit in parallel with
the STC&D-W.
The Normally Closed contacts of one or
more additional Low V oltage Controls may
be connected to E RV unit Terminals 1 &
4. Do not apply power to these terminals.
BLACK
STC7D-W
1
2
3
4
5
YEL
1
2
3
4
5
RED
BLACK
STC7D-W
3. DIMENSION DRAWINGS
Applicable to TRC500 and TRC800 models

6
4. SETTING INSTRUCTIONS
Set Time and Day
Slide Set switch to press 1…7 button until
arrow points to the correct day (1=Monday).
Press hthen mbuttons to set correct time. PM
indicator shows noon to 11:59 PM. Slide Set
switch to Run. Clock colon will blink.
Set Switch “On” Cycle
Slide Set switch to P. A “1” indicates the rst
switch cycle and a “Bulb” indicates a switch-on
(circuit closes). Press 1…7 button until arrows
point to selected day(s) for this cycle. Press h
and mbuttons to show switch-on time, noting
PM indicator.
Set Switch “O󰀨” Cycle
With Set switch at P, press Pbutton, note
switch cycle number changes to “2” and Bulb
blinks, indicating switch-o󰀨 (circuit opens).
Press 1…7 button to match day(s) set for switch
cycle “1”. Press hand mbuttons to select
switch-o󰀨 time.
Autorun
Slide Set switch to Run and Mode switch to
Auto, switching begins with next switch-on set
time.
Override “On” Slide Mode switch to "I". Switch remains on
indenitely (circuit closed).
Override “O󰀨” Slide Mode switch to "O". Switch remains on
indenitely (circuit open).
Skip Cycle In automatic run mode, press "x→" button. The
next calendar day is skipped.
Setting ERROR
If EEE appears, a setting error exists. The
switch cycle number in error is shown. Slide
set switch to P, press Pbutton until cycle is
shown, review this and the following setting to
correct error, slide set switch to Run.
Clear any setting
Setting slide set switch to P, press Pbutton to
show switch cycle to clear. Press the Pbutton
and the skip (x) button simultaneously, hold for
several seconds.
Clear All To erase all settings, Press "R".

7
3. DIMENSION DRAWINGS
Applicable to TRC500 and TRC800 models
2.0 SETTINGS
2.1 SETTING INSTRUCTIONS
SETTING THE CLOCK:
• Press and hold the CL OCK button.
• Press the DAY key until the correct day is displayed.
• Do the same with the HOUR and MIN. Now the clock is set!
SETTING THE TIMER:
Press the "DAY" key to scroll through these settings.
These can be used to simplify programming. All times must be the same for the days chosen! Let us say you
want to run a device Monday through Friday at the same time. Scroll down to #9 and you will have the
days set!
Press the "TIMER" key and the display will show "1°N--:--__ " set the time you want the unit to turn on by
pressing the "HOUR" and "MIN" buttons respectively. To set the turn off time, press the "TIMER" key again
and "10FF --:--__ " will show in the display. Again, set the "HOUR" and "MIN" time. If you want more than
1 on/off per day, press the "TIMER" key again and set "2°N--:--__ ," "2°FF --:--__ " until you reach the
maximum of 8 on/off's per day.
The timer is now set, but you need to push the "MANUAL" button until the line is under "AUTO." If you only
want 1 on/off per day or if you have more on/off's per day, when you are done programming them in,
press the "CLOCK" key again and you are almost done.
Reset the setting: If you wish to change any or all on/off times, you must reset the timer. You cannot change
just one setting.
Clear all: To erase all settings, Press the® button.

8
Operation Modes:
There are three operation modes: "ON," "AUTO," and "OFF"; selected through the "MANUAL" key.
When the "MANUAL'' key is pressed, observe that the indicator (line) on the screen moves upon the
words.
• MODE ON: When the indicator is on "ON," the output turns on immediately and keeps this status while in
"ON" mode.
• MODE OFF: When the indicator is on "OFF," the output turns off immediately and keeps this status while in
"OFF" mode.
• MODE AUTO: When the indicator is on "AUTO," the output turn on and turn off based on the programs.
When the timer is not powered, it turns off the output permanently.
3.0 ELECTRICAL
3.1 ELECTRICAL SCHEMATICS
TR90
TR130
TR200
TR300
FIGURE 3.1.0 TR90, TR130, TR200 AND TR300 STANDARD WIRING SCHEMATIC
STC7D-W

9
3. DIMENSION DRAWINGS
Applicable to TRC500 and TRC800 models
1
2
3
4
5
C
C
YEL
YEL
YEL
BLUERED
RED
ERV INTERNAL CONTROL
WIRING (SIMPLIFIED)
ERV INTERNAL CONTROL
WIRING (SIMPLIFIED)
Unit’s 24VAC
Power Supply
Isolation
Relay Coil
Unit’s 24VAC
Power Supply
Isolation
Relay Coil
The Normally Closed contacts of one or
more additional Low V oltage Controls may
be connected to E RV unit in parallel with
the STC&D-W.
The Normally Closed contacts of one or
more additional Low V oltage Controls may
be connected to E RV unit Terminals 1 &
4. Do not apply power to these terminals.
BLACK
STC7D-W
1
2
3
4
5
YEL
1
2
3
4
5
RED
BLACK
STC7D-W
FIGURE 3.1.1 TRC500, TRC800, AND TRC1200 STANDARD WIRING SCHEMATIC
STC7D-W
FIGURE 3.1.2 TRCe800AND TRCe1200 WITH TERMINAL BLOCK SCHEMATIC

10
Operation Modes:
There are three operation modes: "ON," "AUTO," and "OFF"; selected through the "MANUAL" key.
When the "MANUAL'' key is pressed, observe that the indicator (line) on the screen moves upon the
words.
• MODE ON: When the indicator is on "ON," the output turns on immediately and keeps this status while in
"ON" mode.
• MODE OFF: When the indicator is on "OFF," the output turns off immediately and keeps this status while in
"OFF" mode.
• MODE AUTO: When the indicator is on "AUTO," the output turn on and turn off based on the programs.
When the timer is not powered, it turns off the output permanently.
3.0 ELECTRICAL
3.1 ELECTRICAL SCHEMATICS
TR90
TR130
TR200
TR300
FIGURE 3.1.3 TR90, TR130, TR200 AND TR300 STANDARD WIRING SCHEMATIC
STC7D-W

S&P USA Ventilation Systems, LLC
6393 Powers Avenue
Jacksonville, FL 32217
T. 904-731-4711 • F. 904-737-8322
www.solerpalau-usa.com
S&P Canada Ventilation Products, Inc
6710 Maritz Drive Unit #7
Mississauga, ON L5W 0A1 - Canada
T. 416-744-1217 • F. 416-744-0887
www.solerpalaucanada.com