Intermatic FM/1 Series User manual

FM/1 Series
Time Switches
TECHNICAL DATA
Supply Voltage: Synchronous: 24, 120 and
240VAC, 60Hz
Quartz: 24V AC/DC, 120 and
240VAC 50/60 Hz
Switch Type: SPDT
Switch Rating: 21A @ 250VAC resistive
1350 watt tungsten
1HP @ 125VAC
2HP @ 240VAC
Ambient
Temp. Range: –40°F to 180°F, synchronous units
–20°F to 140°F, quartz units
Terminals: 1/4” spade terminals
Reserve Carryover: 72 hours for quartz units
Weight: Approximately 3 oz.
Agency Approvals: UL Recognized
NOTE: 24V quartz unit will operate on 6VDC, 12VDC,
or 24VDC
APPLICATIONS
The FM/1 series of time switches are designed for control
of heating, ventilating, air conditioning, refrigeration, lighting,
security, circulating pumps, spas or any electrical load requiring
24-hour or 7-day scheduling.
WIRING
Verify input voltage stated on back of unit. Use 1/4” quick
connects and make connections in accordance with the wiring
diagram shown and applicable code requirements. When using
24V units, it is important to use transformers that will supply the
required 24 volts AC to terminals 1 & 2.
MOUNTING
The standard FM/1 units can be flush mounted (mounting kit
with screws available) or surface mounted inside a panel. A
printed circuit board mounting base is also available. An indoor
or outdoor enclosure is available for stand-alone mounting. In
addition, unit is also available in DIN housing for flush or surface
mounting (see MIL72, Digi 20 or Digi 42 data sheets). Optional
clear plastic dust cover is available.
Terminal Connections
Contacts shown in “Off” position (trippers pushed inward)
“On” position (trippers pushed outward) will close contacts 3 & 4
45 3 1
M
INPUT
COM
NO
NC
2

TIME SETTING
TO SET THE CURRENT TIME (AND DAY OF WEEK ON
7 DAY UNITS), TURN THE MINUTE HAND CLOCKWISE.
DO NOT SET THE TIME BY ROTATING “OUTER” DIAL.
Turn the minute hand clockwise until the day of the week
(7-day timer) and the time of day on the outer dial is aligned
with the triangle marker on the inner dial (two o’clock posi-
tion).
Example for 7-day program dial Monday 10:30 AM. Turn the
minute hand clockwise until Monday 10:30 AM is aligned with
the triangle on the inner dial. The hour and minute hand will
show exactly 10:30.
Example for 24-hour program dial 10:30 AM. Turn the minute
hand clockwise until 10:30 AM is aligned with the triangle on
the inner dial. The hour and the minute dial will show exactly
10:30.
PROGRAMMING
7-Day (SW, QRW Models)
The weekly program dial reflects the seven days of the week
and AM/PM imprints for each day.
The time switch is programmed by pushing the captive trippers
to the outer ring position for the entire period that the load is to
be turned “ON”, i.e., two hours for each tripper on the 7-Day
dial. When the tripper is pushed to the inside, the switch is in
the “OFF” position.
24-Hour (ST, QRT Models)
The 24-Hour dial has quarter-hour divisions and AM/PM indi-
cations.
The time switch is programmed by pushing the captive trippers
to the outer ring position for the entire period that the load is
to be turned “ON”, i.e., fifteen minutes for each tripper on the
24-Hour dial. When the tripper is pushed to the inside, the
switch is in the “OFF” position.
PROGRAMMING WITH MANUAL
OVERRIDE SWITCH
AUTOMATIC MODE
In order to operate the time switch module in the automatic
mode, the manual switch must be in the center position (auto-
matic) - see diagram.
MANUAL MODE
With the manual switch selector lever the selected programs can
be overridden. In the lower position, marked “O”, terminals 3
and 5 are permanently closed. In the upper position, marked “I”,
terminals 3 and 4 are permanently closed (see diagram).
158--02196
Override Mode
3-way manual
override switch
I = permanent ON
= automatic
0 = permanent OFF
Dimensions
FM/1 synchronous/quartz
INTERMATIC INCORPORATED
Libertyville, IL 60048
www.intermatic.com