Submittal Sheet

800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA
97
T
orque min. 35 in-lb, for control of air dampers
A
pp
l
i
cat
i
o
n
F
or On/Off, fail-safe control of dampers in HVAC systems. Actuator sizing should be
d
one in accordance with the damper manufacturer’s specifications. Control is On/Off
f
rom an auxiliary contact, or a manual switch.
T
he actuator is mounted directl
y
to a dam
p
er shaft from 3/8” u
p
to 1/2” in diameter
b
y means of its universal clamp, 1/2” shaft centered at delivery. For shafts up to 3/4”
u
se K6-1 accessory. A crank arm and several mounting brackets are available for
app
lications where the actuator cannot be direct cou
p
led to the dam
p
er shaft
.
Op
eratio
n
T
he LF series actuators provide true sprin
g
return operation for reliable fail-safe
a
pplication and positive close off on air ti
g
ht dampers. The sprin
g
return system
p
rov
id
es cons
i
stent torque to t
h
e
d
amper w
i
t
h
, an
d
w
i
t
h
out, power app
li
e
d
to t
h
e
a
ctuator
.
T
he LF series provides 95° of rotation and is provided with a
g
raduated position
i
n
di
cator s
h
ow
i
ng 0° to 95°.
T
he actuator ma
y
be stalled an
y
where in its normal rotation without the need of
mec
h
an
i
ca
l
en
d
sw
i
tc
h
es.
P
ower consumpt
i
on
i
s re
d
uce
d
i
n
h
o
ldi
ng mo
d
e.
Th
e
a
ctuator
i
s
d
ou
bl
e
i
nsu
l
ate
d
so an e
l
ectr
i
ca
l
groun
d
connect
i
on
i
s not necessary.
T
he LF120-
S
U
S
and LF230-
S
U
S
versions are provided with one built-in auxiliary
s
witch. This
S
PDT switch is provided for safety interfacin
g
or si
g
nalin
g
, for example,
for fan start-up. The switchin
g
function is ad
j
ustable between 0° and 95°.
Dimensions (Inches [mm])
0.39" [10]
7.67" [195]
3.66" [93]
1.93"
[49]
6.10" [155]
3.15" [80]
3.86"
[98]
0.256" [6.5]
0.98"
[25]
4.92" [125]
0.79"
[20]
0.5"
[12.7]
0.71" [18]
0.74" [18.7]
2.24"
[57]
3.23" [82]
0.25" [6.3]
Standard:
3/8" to 1/2"
3/8" to 7/16"
Optional
1/2" to 3/4"
w/K6-1
accessory
D
0
1
0
LF120
(
-
S)
U
S
/
LF230
(
-
S)
U
S
On/Off, Sprin
g
Return, 120/230 VA
C
Technical Data LF120(-S) US / LF230(-S) US
P
ower supply
LF120
(
-S
)
U
S
120 VAC ± 10% 50/60 H
z
LF230
(
-S
)
U
S
230 VA
C
± 10% 50
/
60 H
z
P
ower consum
p
tio
n
L
F120
(
-S
)
U
S
running
5.5 W
holdin
g
3.5 W
L
F230(-
S
) U
S
runnin
g
5
W
h
o
ldi
n
g
3 W
Transformer sizin
g
L
F120
(
-S
)
US 7.5 V
A
L
F230
(
-S
)
US 7 V
A
E
lectrical connectio
n
(
-S models have 2 cables
)
3 ft, 18 GA a
pp
liance cabl
e
1/2” conduit connecto
r
Overload protectio
n
e
l
ectron
i
c t
h
roug
h
out 0 to 95° rotat
i
on
E
lectrical protectio
n
actuators are double insulate
d
A
n
g
le o
f
rotatio
n
max 95°, ad
j
ust. with mechanical sto
p
T
or
q
u
e
35
i
n-
lb
[
4
N
m
]
constant torque
Direction of rotatio
n
reversible with cw/ccw mounting
P
osition indicatio
n
visual indicator, 0° to 95
°
(
0° is sprin
g
return position
)
E
lectrical
p
rotectio
n
actuators are double insulate
d
R
unnin
g
tim
e
m
otor
< 4
0
t
o
7
5
sec
(
nominal
)
sprin
g
< 25 sec @-4°F to 122°F
[
-20°C to 50°C
]
< 60 sec
@
-22°F
[
-30°
C]
H
umidit
y
5 to 95% RH non-condensin
g
A
mbient tem
p
eratur
e
-22°F to 122°F
[
-30°C to 50°C
]
S
tora
g
e temperatur
e
-40°F to 176°F
[
-40°
C
to 80°
C]
H
ousin
g
NEMA type 2 / IP54
H
ousin
g
materia
l
zin
c
coa
t
ed
s
t
eel
Ag
ency listin
gs
cULus acc. to UL 873 an
d
C
AN
/CS
A
C
22.2 No. 24-93
N
oise level
(
max
)
runnin
g
< 50 db
(
A
)
s
pring retur
n
62 dB (A)
Servicin
g
m
a
int
e
n
a
n
ce
f
r
ee
Q
uality standar
d
I
SO
9001
Weigh
t
LF120
/
23
0
3.4 lbs (1.54 kg)
LF12
0/
2
30
-
S
3.5 lbs (1.60 kg)
LF120-
S
U
S
/
LF230-
S
U
S
A
uxiliary switc
h
1 x
S
PDT 3A (0.5A)
@
250 VA
C
, UL Approve
d
adjustable 0° to 95°
M40024 - 05/10 - Subject to change. © Belimo Aircontrols (USA), Inc.