Lennox LCH092H Unit Information page 36

LINE VOLTAGE IN
TRIP
INDICATION
WINDOW
AMP SETTING
POINTER
AMP SETTING
CONTROL
(BLUE DIAL)
RED TEST
BUTTON
(Push To Test)
LOAD VOLTAGE OUT
Lift clear cover to adjust relay amp setting according to value given on the blower motor nameplate.
Proper relay amp setting equals motor nameplate FLA X service factor of 1.15 X .95.
Cover must also be lifted to adjust control mode from automatic reset to manual reset (see detail
Control must be in the manual reset mode to perform a test. Use a pointed object to press the small
red test button. A yellow marker should appear in the trip indication window to the right of the amp
setting control. Press the blue reset screw to reset the relay.
The red STOP button opens the normally closed contacts which power the blower motor. This button
stops blower motor operation as long as it is pressed in.
Adjust relay amp setting according to value given on the blower motor nameplate. Proper relay amp
setting equals motor nameplate FLA X service factor of 1.15 X .95.
Use small slotted screwdriver to adjust control mode from automatic reset (A) to manual reset (H).
Control must be in the manual reset mode (H) to perform a test. Press the red test button. Green trip
indicator should pop out. Press the blue reset screw to reset the relay.
TELEMECANIQUE OVERLOAD RELAY
CLEAR
COVER
(SHOWN
CLOSED)
STOP
BUTTON
(RED)
BLUE RESET SCREW
(Shown in AUTO position as
shipped from the factory)
above) and to test the control.
FIGURE 8
SIEMENS OVERLOAD RELAY
BLUE RESET BUTTON IN
FACTORY‐SET AUTO MODE
(Turn clockwise to H for man­
(Flush with surface -- not tripped;
AMP ADJUSTMENT DIAL
FIGURE 9
Page 36
DETAIL SHOWING RESET BUTTON
ADJUSTED TO MANUAL POSITION
Lift clear cover and turn adjustment screw
counterclockwise. Reset screw will pop out
when pointer is in M (manual position). Close
cover to lock reset screw into position.
ual reset)
GREEN TRIP INDICATOR
Above surface -- tripped)
RED TEST BUTTON