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problem with heating coil
hi,okay so i was asked to do a job.air handler and heating coil are in attic.STEAM boiler in basement.i followed dans drawing in his book How Come.....refering to taking a zone of a steam boiler and pumping the water up 30'.i used a breonze b&g as suggested.my electrician wired my zone for me.he put in a single zone relay.when a call for heat comes from second floor boiler comes on as does pump.aquastat is set for 180 on boiler below water level.the ac installer then installed a strap on aquastat on return pipe coming of coil.coil is only heating second floor.thermostat has a manual setting and automatic setting.when set on manual system runs beautiful,hot air etc.problem is owner has to turn on when he wants heat which is a pain in the ass at 3am.when stat is put on auto unit doesnt fire up.im pumping 160 degree water up and strap on aquastat wont turn on blower.aquastat is set for 120.when i lower the aquastat to 90 it kicks on blower and i hear a lot of air in system.i bled system out and ran it again getting the same result.i then switched thermostat to manual and blower comes on pumping forced hot air with no air in system.unit is american standard.any ideas as to what is going on?????im about to get a small boiler and put it on a seperate zone which i wanted to do but there was problems with gas permits,thanks in advance