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24-HOUR TIMER
TECHNICAL DATA
Description:
24-Hour Timer
Power Consumption: 120 V, 0.5 W
Application:
Time actuated On/Off pump control
Supply Voltage:
110-120 VAC, 60 Hz
Shortest Switching Interval:
¼ hour (15 minutes)
Terminals:
¼” spade terminals
Manual Switch Modes:
“Timer”,
Weight:
Approximately 3 oz.
“ON” Override, “OFF” Override
Ambient Temperature Range: -40ºF to 180ºF (-40ºC to 82ºC)
TIMER INSTALLATION
Note:
Steps 1 & 3 apply to retrofit installations.
1.
Disconnect the electrical supply to the circulator
Note:
Numerical component designations included in Steps 2 through 10 refer to circulator and timer
components shown in Fig. 1.
2.
Unfasten the mounting screw (4A) and remove the terminal box cover (3).
3.
Disconnect motor leads from the power supply.
4.
Unfasten the mounting screw (4B) on the timer box cover (10) and detach it from the base (8).
5.
Remove the lock nut (5A) from the threaded fitting (6) on the timer box base (8).
6.
Attach the timer base (8) to the circulator terminal box (2) by inserting the threaded fitting (6) through the
opening on the side of the terminal box base.
7.
Fasten the lock nut (5A) on the end of the threaded fitting (6) to securely attach the timer base (8) to the
terminal box (2).
8.
Connect terminal box lead wires (black, white and green) to the timer unit and the power supply (as shown in Fig. 2).
Note:
Lead Wiring Specification - Minimum, 6” (152 mm) long, 14 AWG, rated minimum 140ºF (60ºC).
Provided with R/C crimp connectors for attachment to the ground.
9.
Re-attach the timer box cover (10) using the mounting screw (4B). Insure that all lead wires are inside the timer assembly.
10. Close the terminal box cover (3) by fastening the mounting screw (4A).
11. Program the timer according to instructions provided on page 4.
12. Connect the unit to electrical supply.
13. Start the circulator.
Fig. 2 Astro Series circulator and 24-Hour Timer wiring diagram
WARNING:
Electrical shock hazard - Verify that the electrical rating of the device matches the values shown on the nameplate of the circulator.
All electrical work should be performed by a qualified electrician in accordance with the latest edition of the National Electric Code,
local codes and regulations. Failure to follow these instructions could result in serious injury, death and/or property damage.
Fig. 1 Astro Series circulator and 24-Hour Timer assembly drawing
