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AIR DAMPER LINKAGE
AIR DAMPER LINKAGE
AIR DAMPER LINKAGE
AIR DAMPER LINKAGE
AIR DAMPER LINKAGE ADJUSTMENT
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT
1.
Start the blower motor. See that the air damper is closed (position shown below). Blower air
pressure will hold it closed.
2.
Check to see that the pins in the air solenoid lever and air damper lever are located as shown below.
3.
Loosen the set screw in the air damper lever hub and, with the damper closed, rotate the lever until
the air solenoid armature gap is 7/8”.
4.
Tighten the air damper lever set screw slightly. Check to see that there is slight end play of the
levers on the air damper shaft so they may rotate freely. Then tighten the set screw tightly.
NOTE:
If the damper does not open in a positive manner, reconnect the lower end of the damper
opening spring to the alternative connection position shown below.
AIR PRESSURE SETTING
AIR PRESSURE SETTING
AIR PRESSURE SETTING
AIR PRESSURE SETTING
AIR PRESSURE SETTING ADJUSTMENT
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT
1.
Adjust the air damper linkage as described above.
2.
Loosen the set screw in the damper wire swivel.
3.
Move the air pressure control lever on top of the control enclosure to minimum setting.
4.
With the blower motor running and the air damper closed, move the air pressure lever until it
touches the pin in the lower end of the air damper lever.
5.
Tighten the damper wire set screw onto the damper wire tightly.
