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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
providing visual indicators of economizer or sensor malfunctions directly on the LCD
Common Questions What does the 802003272 relay protect against
Extended Reach: The factory-terminated 32-foot shielded cable reduces the need for field-splicing
which enhances reliability under high-cycle conditions
Siemens Combustion QRA4M.U Scanner L99H008 providing visual indicators of economizerThe Siemens Combustion QRA4M. U is a high sensitivity UV flame scanner engineered for the rigorous supervision of gas or oil flames and ignition spark proving in intermittent burner operations. As a veteran grade flame detector, this sensor utilizes a specialized UV sensitive cell with two electrodes designed to ignite upon detecting radiation within the 190 to 270 nm spectral range. This ignition triggers the necessary current in the flame detector
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