RA890F PROTECTORELAY Burner Controller User's Manual
▲The RA890F is a solid state electronic burner controller to be used for the automatic operation and safety operation of gas, oil or combination gas-oil combustion equipment, up to 700 kW, in batch operation.
▲The flame detector of a flame rod or the C7012A Ultraviolet Flame Detector is used in combination with the RA890F.
▲lf ignition failure should occur during starting , the safety switch is operated to stop the combustion safety device safely.In this case, restarting is prevented by safety design, unless the“RESET”push button is operated.
▲The RA890F is a line voltage device,and operated after mounted directly onto the Q270A subbase.
■A safeguard circuit is incorporated to prevent the RA890F from being operated,when a false flame signal is detected by the flame detector.
■If the burner fails in ignition, the safety switch is operated to close the fuel valve automatically.
■A test jack is provided to permit the flame current to be read.
■Combustion control is also permitted by connecting together a line voltage controller or low voltage controller.
■Applicable to the interrupted pilot system or intermittent pilot system.
■The input circuit is protected against the high voltage of the ignition transformer, when a flame rod flame detector is used.
■Adaptable to combustion equipment in batch operation(started and stopped once or more per 24 hours). Not to be used for continuous operation.
■The RA890F performs recycle operation during flame failure.Therefore, when it is to be used together with a gas-fired combustion system, operate it in non-recycle sequence by using an on-delay timer. (Refer to Fig. 4.)
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RA890F 、 C7012A 、 RA890F1460x2 、 RA890F1411x2 、 RA890F1452x2 、 RA890F1296x2 |
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Burner Controller 、 solid state electronic burner controller 、 Ultraviolet Flame Detector 、 Protectorelay |
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User's Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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Dec.2021 |
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11th edition |
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CP-UM-1217E |
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2.8 MB |
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