ASCO Relay Control Panels
Applications
ASCO relay control panels were originally designed to New York City Board of Education specifications to operate ASCO DC solenoid valves controlling gas flow to school kitchens, domestic cooking classes, ceramic and metal shops. Because of its many features and silent operation, the ASCO relay panel has also been used in many other similar institutions and schools outside New York City. Vandalism and malicious mischief have caused some city governments to make it mandatory that the gas supply be secured during hours when schools are closed. Other governmental bodies and consulting engineers have also recognized this need, and specify the ASCO relay panel even when not mandated by code.
ASCO relay panels may also be used in industrial and commercial installations where control of various gases and fluids are important.
ASCO Relay Panel
Catalog No 108D10C
Input Voltage: 120 volts, 60Hz
Output Voltage: 80 volts DC
Output Current: 0.8 amp maximum
Operations
Operating the key switch on the control station energizes the relay, opening a normally closed ASCO DC solenoid valve which turns on the gas flow.
Panel Features
• Reliability
ASCO’s long experience in control assures a highly dependable system especially when used in combination with ASCO valves. If the control voltage is lost completely, or reduces to approximately 50% of normal value, the relay de-energizes the normallyclosed valve to shut off the gas flow. The gas may also be shut off by depressing the normally closed pushbutton switch located on the control station.
The valve will not open at restoration of voltage until an authorized person operates the key switch on the control station. This eliminates the danger of gas unknowingly escaping.
For convenience, auxiliary push-but- tons, ASCO Catalog numbers 173A19 and 173A20 may be located at various access points throughout the building, for immediate shutoff under emergency conditions.
• Silent Operation
Utilization of DC output provided by the relay panel to the valves eliminates constant AC hum.
• Appearance
Shallow-depth NEMA Type 1 flush mounted enclosure permits in-stalla- tion directly into the wall for convenience, and elimination of obstructions in corridors or high traffic areas.
• Long Life
ASCO dust-tight industrial relay and solid-state rectifier are designed to provide long life.
• Ease of Installation
Clearly marked terminals and installation drawings located on inside of door.
• Approvals
Originally designed for and approved by the New York City Board of Education for use in public schools.
AC Relay Control Panel
Catalog No. 108D90C provides the same features as the DC panels previously described, except with 120/60 AC voltage output for AC valves. Features a key-operated switch with manual “on” and “off” buttons directly on the cover. 108D90C is for flush mount applications and supports surface mount installations.
The 108D90C is also available with 24 VAC, 24 VDC, 208 VAC, and 240 VAC output. Contact ASCO for further details.
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