Auto-feed on millivolt system.

tim smith_2

Other than mechnical feed, you could use a millivolt relay which has a millivolt coil and line voltage contacts. We have over the years used many of these for power vents on m/v pool heaters with power venters. We would turn the power venter on with relay when pool heater called for heat. I will let you know although that they are very finicky to power loss in m/v system. Need to use #12 wire on m/v power and get very good connections otherwise there wont be enough voltage to pull in relay. Good luck.

JohnNY

Auto-feed on millivolt system.

How do you guys handle that installation? Do you just go with a mechanical unit?

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bigugh_4

.001 volt systems

These extra low voltage systems have their place. AND their limits. You can and must stay within their specifications. To use a electronic low water feed system you will have to isolate the millie volt system from ever obtaining any electrical feedback from the higher voltage needed to operate it. This could be accomplished by carefully choosing an isoloation relay. Large sheilded wireing will have to be used in the millie volt system to protect it from induced voltages. I'd stick with the standard mechanical feed systems. and use two (2) lwco's and protect yourself from a problem!