Product Overview

Control
Panels
4
COMBUSTION
449
Panel 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 govern-
ments to make it mandatory that the gas supply be locked off during
closed hours. Other governmental bodies and consulting engineers
have recognized the need and specifying the ASCO relay panel
although not mandated by code.
ASCO relay panels are also used in industrial and commercial installa-
tions to control various gases and fluids.
Operations
Operating the key switch on the control station energizes the relay
to open a normally closed ASCO DC solenoid valve which turns on
the gas flow.
Panel Features
• ASCO’s reputation and long experience in control are assurances
of highly dependable systems with complete ASCO coordination.
• If the control voltage is lost completely, or reduces to approximately
50% of normal value, the relay de-energizes the normally closed
valve to shut off gas flow.
• 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. The gas may
also be shut off by depressing the normally closed pushbutton
switch located on the control station.
• For convenience, auxiliary push-buttons, such as the ASCO Catalog
numbers 173A19 and 173A20 may be located at various accessible
points throughout the building.
• Utilization of DC control provided by the relay panel eliminates
annoying AC hum.
• Shallow-depth NEMA Type 1 flush-mounted enclosure permits
installation directly into the wall for convenience and elimination
of obstructions in corridors or high traffic areas.
• ASCO dust-tight industrial relay and solid-state rectifier are
designed to provide long life.
• Clearly marked terminals and installation drawings are located on
inside of door.
•
Approved by New York City Board of Education for use in public schools.
AC Relay Control Panel
Catalog No. 108D90C (replaces AEP 7200) provides
the same features as the DC panels described
above except for its 120/60 AC voltage output.
Features a key-operated switch with manual “on”
and “off” buttons on the cover.
(Has not been submitted for N.Y.C. Board of
Education approvals.)
ASCO RELAY PANEL
Catalog Number: 108D10C
Input Voltage: 120 volts, 60 Hz
Output Voltage: 80 volts DC
Output Current: 0.8 amp maximum
RELAY
PANEL
108D10C
V V
KS
PBMPBMPB
CONTROL STATIONS
173A19 OR 173A20
PB = ASCO PUSHBUTTON SWITCH
MPB = ASCO MUSHROOM TYPE
PUSHBUTTON SWITCH
KS = ASCO KEY-OPERATED SWITCH
V = ASCO VALVE COILS
CONTROL LINE
120VAC 60HZ
CONTROL
STATION
216C89
.
.
9 (229)
10
(254)
.
.
FRONT VIEW
RIGHT SIDE VIEW
ENCLOSURE
DEPTH
CL
3/4" KNOCKOUT
(ONE PROVIDED ON
EACH SIDE) FOR
CUSTOMERS
CONNECTIONS
3.75
(95)
0.63
(16)
Panel 108D10C Dimensions
Controls and Valves for Gas Service
Originally designed to N.Y.C. Board of Education specifications
Control System Schematic