Our raypak whistles fairly loudly after startup.
The noise seems to come from the upper half of heater. Whistling sound changes volume if I lower speed on my intelliflo pump. I have a gas shutoff just before heater. If I partially close valve the sound is almost gone. When I do that the flame height is greatly reduced (and I assume heating capacity also reduced)
Any ideas what could be causing this?
The noise seems to come from the upper half of heater. Whistling sound changes volume if I lower speed on my intelliflo pump. I have a gas shutoff just before heater. If I partially close valve the sound is almost gone. When I do that the flame height is greatly reduced (and I assume heating capacity also reduced)
Any ideas what could be causing this?