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L’ Honeywell
THE L4068A,C,E,F
FAN CONTROLS OPER-
ATE
THE
FURNACE
FAN
MOTOR
IN
RESPONSE
TO PLENUM TEMPERATURE
IN
FORCED
AIR
HEATING
SYSTEMS.
L4068G ATTIC FAN CONTROL OPERATES
AN ATTIC
VENTILATION
FAN IN RE-
SPONSE TO ATTIC AIR TEMPERATURE.
THE
L6068
AIR
SWITCH
IS USED
IN
DOWNFLOW
FURNACES
TO
PREVENT
REVERSE
AIR
CIRCULATION
AND TO
ii
PROVIDE
PROTECTION
AGAINST
EX-
CESSIVE
TEMPERATURES
CAUSED
BY
CLOGGED
FILTERS.
THE
L6068
CAN
ALSO
BE
USED
TO
CONTROL
A 2-
SPEED FAN.
q
L4068
has spst switch;
L6068
has spdt
switch.
q
L4068A,C,E,F
have adjustable
FAN OFF
and differential
settings.
q
L4068G has adjustable
FAN OFF setting,
fixed differential
setting.
(3 L6068
available with fixed or adjustable
temperature
setting;
differential
is fixed.
q
MAN-AUTO fan lever standard on L4068E,
F; optional on L4068G.
q
Bimetal
sensing element
actuates
switch.
q
Push-in terminals.
q
Available with and without
case and cover.
L
J.A.
1-76 t.059)
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