Bridge wall in a furnace is the section the radiation section ends and the convection section begins
When the AC is on, the furnace may produce condensation that can leak if the condensate drain is clogged or damaged. This can cause water to accumulate and leak from the furnace.
I think you mean from the furnace to the ac unit as the ac unit does not power anything, so here is the low voltage wiring schematic from furnace to ac unit. Y--------------------------------------------------------------------------------------------------Y C or Common----------------------------------------------------------------------------------C
My parents did it with existing ductwork.
Your location matters. If in Florida heat pump in more northern climes furnace & ac.
what happan AC 24 V CONNECT EARTH ?
no
110000 btu furnace how many tons ac
yes.
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An A/C unit is not required to run a furnace. You will want to make sure there are no gaps or missing equipment.
Check the circuit breakers for both, doubtful both have simultaneously failed.