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Posted by Alan on February 11, 2006 at 16:47:58:
I have an older 2 story house with a Vaillant boiler and single pipe system. The system was working well, when a tree limb fell and opened up the neutral on the power pole, thus damaging the furnace. The L8148J 1009 Aquastat was replaced. At the same time the repair person reset the simple thermostat anticipator from .7 to .2 (the Aquastat label says the thermostat current is .2 amp). A lot of what I have found on the web says the thermostat anticipator should be set to around .5 to .8. The Aquastat is set for 180 degrees. The system now seems to cycle a lot more frequently than it did before, with very short cycles. Is it temperature limit on the Aquastat set to the proper temperature? And is the anticipator set correctly on the room thermostat? Ok to change the thermostat anticipator higher and will that help? Thank you.