Honeywell保护继电器.pdfVIP

RA890G Protectorelay™ Primary Control The RA890G Protectorelay™ control provides solid state electronic safeguard protection for in- dustrial and commercial gas, oil, or combination gas-oil burners. ■ Designed for interrupted ignition with intermittent ■ Automatic safety switch lockout if flame fails on pilot for gas burners, and for interrupted or inter- start or if flame is not re-established after a flame mittent ignition on oil burners. failure. ■ Used only with a C7027, C7035, or C7044 Mini- ■ When limit control opens, control de-energizes peeper Ultraviolet Flame Detector. ignition and fuel valves, but safety switch lockout ■ Either a line voltage or low voltage controller can will not occur. be used. ■ Test jack permits readings of flame signal. ■ Solid state circuitry eliminates warmup and in- ■ Easy mounting and removal through use of captive creases resistance to vibration. mounting screws. Durable thermosplastic mount- ■ Push-to-reset safety switch button is in dust-resis- ing base. tant enclosure. ■ -40F (-40C) approved model available. ■ Safe start check prevents start if flame or flame simulating failure is present. CONTENTS Specifications 2 Ordering Information 2