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Instantaneous Gas water heater – Bosch Tankless Water Heaters …Instantaneous gas water heater Models W 325 K..T1 W 400 K..T2 · Installation · Operation · Maintenance supply of air will result in a yellow luminous burner flame, causing carboning or sooting of the heat exchanger. In unconfined spaces, … Visit Document How-to-troubleshoot-gas-water–heaterFalse flame 4 blinks… Read More »
Instantaneous Gas water heater – Electric Tankless Water …Fill the heater and piping. • Close the hot water faucet after the water flows freely and all air has escaped from the system. If the flame is soft and yellow the pilot screen may be dirty or the pilot burner orifice may need to be cleaned… Read More »