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Chapter 5. Trial Operation and Adjustment
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Measurement method for flame voltage
The voltage can be checked on the 7-segment display or by connecting a flame
meter to terminals 25 and 26 of the front connector.
Handling Precautions
• For flame voltage output signal wires, use wire with indoor PVC insulation ("IV
wire," JIS C3307) 0.75 mm
2
. Wiring length cannot be more than 10 m.
• The input impedance of a measuring instrument used with this device must
be 100 kΩ or more.
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Checking ignition time in a case where it is configured with an external timer
A flame failure can occur if an ignition attempt is made just before the ignition time
expires.
This is because the supply of power to the pilot valve and main valve is interrupted
for a moment if the time set for the external timer passes during the standby
process for normal combustion and the external timer’s contacts are reversed.
Whenever a flame is detected just before the ignition time has passed, ignition is
delayed.
Adjust the burner so that it ignites reliably at least one second before the ignition
time expires.
Analog flame meter
FSP136A100
* Connector for front wiring (81447514-001/002)
is required to connect FSP136A100 to AUR890.
Flame voltage display
25
26
Содержание 81447514-001
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