Brochure

Controls and Valves for Gas Service
Originally designed to N.Y.C. Board of Education specifications.
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 governments to make it
mandatory that the gas supply be
locked off during closed hours.
Other governmental bodies and
consulting engineers have recog-
nized the need and specifying the
ASCO relay panel although not
mandated by code.
ASCO relay panels are also used in
industrial and commercial installations
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
• RELIABILITY
ASCO’s reputation and long experi-
ence in control are assurances of
highly dependable systems with
complete ASCO coordination.
If the control voltage is lost com-
pletely, 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 restora-
tion 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.
• SILENT OPERATION
Utilization of DC control provided by
the relay panel eliminates annoying
AC hum.
• APPEARANCE
Shallow-depth NEMA Type I flush-
mounted enclosure permits installa-
tion directly into the wall for conven-
ience and elimination of obstruc-
tions 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 instal-
lation drawings are located on
inside of door.
• APPROVAL
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 out-
put. 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 No. 108D10C
Input Voltage: 120 volts, 60 Hz
Output Voltage: 80 volts DC
Output Current: 0.8 amp maximum
RELAY
PA N E L
108D10C
V V
KS
PB
MPBMPB
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
10
.
.
3.75
0.63
FRONT VIEW
RIGHT SIDE VIEW
ENCLOSURE
DEPTH
CL
3/4" KNOCKOUT
(ONE PROVIDED ON
EACH SIDE) FOR
CUSTOMERS
CONNECTIONS
PANEL 108D10C DIMENSIONS
CONTROL SYSTEM SCHEMATIC
8.89 R1