Water is from a plumbing issue above the washer and dryer. Extensive water damage to ductwork. Water streaks are not from the furnace itself, but from above. Found furnace exhaust vent not glued. This is extremely dangerous. Glued the exhaust fittings that could be reached. Exhaust is routed through an abandoned chimney, cannot verify if the fittings are glued inside there. Drain from the furnace was installed incorrectly. Drain trap included with the furnace was installed in a manner that it would not provide the drain trap for the furnace drain. Cut apart drain and reworked it so the furnace is now trapped and vented per the installation manual of the furnace. Questioned the setup of the propane conversion due to the other installation concerns. Connected manometer to furnace control valve and ran the heat. Gas pressure was 5.6" it needs to be 10-11" Propane supply pressure would only allow for 9.6" max This is acceptable, but not ideal. Also insulated bare section of su