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9.3.6 Primary Control Testing
Tools Required:
Flat-blade screwdriver, alligator clip or piece of jumper wire.
Primary Controller Function:
Processes the call for heat and distributes power to the necessary components in order to
operate the burner. During the startup and heating cycle, the primary controller insures that
there is combustion, and shuts down the burner if there is no flame.
During a portion of this test, high voltage electrical components will be
energized. Only a certified electrician is to perform the following procedures, and with
extreme caution.
Note:
During this test, if the Primary Controller does not function as stated, call Technical
Services for assistance, or Customer Service to order a new Controller.
Procedure:
1.
Set the Wall Thermostat to a temperature setting lower than current ambient
temperature.
2.
Disconnect one of the yellow wires going to the F-F terminals on the primary.
3.
Close the hand valve at the inlet of the preheater to prevent oil from spraying into the
chamber during the tests.
Testing the Ignition Monitoring Function of the Primary Control
4.
Use the alligator clip or jumper wire to connect the T-T terminals
a. Burner should run for several seconds and then trip, requiring reset. If this
happens, the primary control is working properly.
b. If the burner does not trip, the primary control should be replaced.
Note:
With the T-T terminals jumped (primary control not tripped and one of the yellow wires
disconnected), if the burner does not operate, verify that the primary is receiving power (120V)
by checking the voltage across the black and white terminals beneath the primary control, and
sending power out (120V) by checking the voltage across the orange and white terminals
beneath the primary control.
Testing the Flame Monitoring Function of the Primary Control
5.
Use the alligator clip or jumper wire to connect the T-T terminals.
6.
When burner starts, use an alligator clip or jumper wire to connect the F-F terminals and
allow to run for 1 minute.
7.
Remove jumper from F-F terminals
a. Burner should run for several seconds and then trip, requiring reset. If this
happens, the primary control is working properly.
b. If the burner does not trip, the primary control should be replaced.
Completing the Test
8.
Reconnect the yellow wire removed in Step 2.
9.
Open the hand valve at the bottom of the preheater.
10.
Return the Wall Thermostat setting to an appropriate temperature.
