Quote:
Originally Posted by AKADQ
When turning off the water pump breaker does this affect water in the pipes for a boiler system that uses forced hot water for heat. I never know when leaving for vacation if I should flip the breaker for the pump because I am afraid the the heating system will need more forced hot water for heat. Does anyone know if this is a closed system and I have nothing to worry about ? 
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It is a closed system, but the boiler occasionally calls for water to automatically keep the water level in the boiler at a safe level. For a vacation or week I probably would not worry about it, but for a long duration I would want there to be water available if needed.