I have an issue with a gas furnace.
I have a megastore hot water heater that was replaced this weekend by myself
Prior to replacing the tank I used all shutoff leading to and from furnace.
When I return to building on Monday one of the zones was not operating.
Finally called a professional.
He felt that there was not enough pressure in the furnace(hot water baseboard) and changed the pressure valve before the expansion tank and the bleeder on top of the tank
THEN HE bled the zone.
THe heat (z0ne) was fine for the day.
When I returned today problem arose again.
I bled the line only to get warmth off radiator for minutes. When I returned 10 minutes later baseboard was cold
He came back again later and said there was air block. He drained zone and said all fine. But 10 minutes after he left back to the same situation - cold.
Also note worthy the other two zones working fine and hot water heater fine.
