Chapter 4. ADJUSTMENTS FOR TRIAL
OPERATION
■
Outline
The following table shows the test adjustment items described in this chapter:
Handling Precautions
• After adjusting the above items, make sure that all of the adjustment
requirements are satisfied. All of the adjustment requirements must be
satisfied by the final mounting position of the flame detector.
●
Required items
• Tester (input impedance, 100k
Ω
or more)
Range: 0 to 300Vac, 0 to 5Vdc
• Two jumper leads with crocodile clips, AWG14 (2mm
2
) or more, approximately
30cm long.
• Insulation tester: 500Vdc megger
●
Preliminary inspection
• Check all wiring locations.
• Make sure that the controller is mounted at a location within the permissible
ambient temperature.
• Make sure that the flame detector is properly mounted.
(For details, see the flame detector user’s manual.)
WARNING
Prevent the pilot and main burner ignition times from exceeding the burner
ignition time which the equipment manufacturer specifies. Excessively long
ignition time might cause fuel to accumulate in the combustion chamber and
an explosive air-fuel mix to form, resulting in the risk of a serious explosion.
Do not touch the terminals during trial operation adjustments. Doing so might
result in an electric shock.
Before removing or mounting the FRS100, be sure to turn the power OFF.
Failure to do so might cause electric shock.
Before carrying out the pilot turndown test or ignition spark response test, be
sure that all manual fuel valves are closed.
Do not operate the control without completing the tests described in this
chapter and the tests of specified by the equipment manufacturer.
Item
Applicable Unit
Flame signal measurement method
All units
Pilot turndown test
Units using the pilot burner
Ignition spark response test
All units
Safety shutdown test
All units
4-1
