1
Installation Instructions
STC7D
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 off
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 qualified person(s) in accordance with all
applicable codes and standards, including fire-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.
Confirm sufficient 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 field-modified 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
field-replaceable
Setting Options
•
8 pairs of on-off time of day cycles can be programmed.
•
Each on-off 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/Off” 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.