Damper Actuator Manual Override - Mitsubishi Electric LAHN-1 Technical & Service Manual

4. Damper actuator manual override

Damper Actuator Manual Override
Damper Actuator Manual Override
IMPORTANT! Never manually override the damper
IMPORTANT! Never manually override the damper
IMPORTANT! Never manually override the damper position if the
position if the outdoor unit could switch to heating
position if the outdoor unit could switch to heating
outdoor unit could switch to heating mode during the override
mode during the override period. Heating mode
mode during the override period. Heating mode
period. Heating mode requires the damper to be fully open for
requires the damper to be fully open for full
requires the damper to be fully open for full full capacity.
capacity.
capacity.
It may be desirable to manually override the damper position and lock
it into position until repairs can be completed. If so, select an average
It may be desirable to manually override the damper
It may be desirable to manually override the damper
temperature, typical for the outside environment during the override
position and lock it into position until repairs can be
position and lock it into position until repairs can be
period, and then use that average temperature to find the desired
completed. If so, select an average temperature typical
completed. If so, select an average temperature typical
damper angle in the chart below.
for the outside environment during the override period,
for the outside environment during the override period,
and then use that average temperature to find the
and then use that average temperature to find the
Ambient Temp Hood Angle
desired damper angle in the chart below.
desired damper angle in the chart below.
[ °F ] [ ° ]
-10 80
Outdoor Thermistor
Outdoor Thermistor
-5 80
Temperature Ohms
Temperature Ohms
0 70
o
N/A
Above 52 F
o
N/A
Above 52 F
5 70
52
18,873
52
18,873
10 70
50
19,903
50 19,903
15 70
45
22,767
45
22,767
40
20 26,104 60
40
26,104
35
30,000
35 25 60
30,000
30
34,562
30
34,562
30 60
25 39,917
25 39,917
35 60
20
46,220
20
46,220
40 OPEN
o
N/A
Below 20 F
o
N/A
Below 20 F
45 OPEN
Follow the instructions below for manually positioning
Follow the instructions below for manually positioning
Follow the instructions below for manually positioning and locking the and locking the damper in place.
and locking the damper in place.
damper in place.
IMPORTANT! Disconnect power to the damper
IMPORTANT! Disconnect power to the damper
IMPORTANT! Disconnect power to the damper motor before
motor before locking in place.
motor before locking in place.
locking in place.
The damper actuator comes with a crank handle
The damper actuator comes with a crank handle The damper actuator comes with a crank handle attached, to manually
attached, to manually move the damper position. The
move the damper position. The crank handle is removable and if it's
attached, to manually move the damper position. The
missing, a 3/16" allen wrench will work just as well.
crank handle is removable and if it's missing, a 3/16"
crank handle is removable and if it's missing, a 3/16"
allen wrench will work just as well.
allen wrench will work just as well.
December 2013
December 2013
Specifications are subject to change without notice.
8
Output Voltage Resistance
v Ω
8.78 117960
Control board Damper
Control board Damper
8.78 100184
DC volts output Angle
DC volts output Angle
7.9 85340
o
2.00
0 full open
o
2.00
0 full open
7.9 72906
o
2.00
0
o
2.00
0
7.9 62460
o
3.25
15
3.25 o
15
7.9 53658
o
4.50
30
o
4.50
30
5.80 7.04 46220 o
45 o
5.80
45
o
7.04
60
7.04 39917 o
7.04
60
o
7.90
70
o
7.90
7.04 70 34562
8.75 o
80
8.75 o
80
7.04 30000
o
9.16
85
o
9.16
85
2 26104
9.16 o
85 o
9.16
85
2 22767
© 2013 Mitsubishi Electric US, Inc.
© 2013 Mitsubishi Electric US, Inc.
Use the following diagrams and instructions for this
Use the following diagrams and instructions for this
procedure.
procedure.
Use the following diagrams and instructions for this procedure.
Winding the damper Locking the damper
actuator
- Insert crank handle - Flip the lock switch
- Turn the handle in to the position
the direction of the pointing to the
arrow. "locked" symbol.
Angle Indicator
Angle Indicator
Unlocking the
actuator damper actuator
(2 options)
- Flip the lock switch
to the position
pointing to the
"unlocked" symbol.
- Remote control by
supplying power to
the unit for > than 3
sec.
© 2019 Mitsubishi Electric US, Inc.
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