Its Heat Season in NYC... Apartment farthest from boiler still cold!

daghstdrummer

Hello All,

I've been on and off this forum for a year now with the same issue, my parents own a 6 family (3 story) apartment building. I live on the third floor in the rear, they live on the second floor in the front. This morning the heat was on and I checked their thermostat temp with the temp in my apartment and it was 1-2 degrees off. The apartment across the hall from me (above my parents) was 10 degrees off! We recently redid the boiler hot water coil (was leaking) and replaced all the main vents. In the Cold apartment we replaced all the radiator valves (which were leaking) and added new D vents in order to get the air out as fast as possible and get the heat to that apartment as quickly as possible. In my parents apartment (the thermostat is in their bedroom which has no radiator only a stand pipe) we've added (C) vents and in the first floor we've added (C) vents as well. There has been no issue with hot water. I have not had any complaints so far but still can't figure out why the third floor farthest from the boiler does not get heat. Any help would be great.

Thanks in advance,

John

KC_Jones

How long and what size are the mains? How much main venting do you have? This is usually a venting issue. Did you have the correct nozzle put in your boiler? Did you turn the pressure down? I read through your other post so curious if you undid those "fixes".

Have you thought about calling in someone that actually knows steam?

daghstdrummer

Thank you for the responses, its just confusing as he** for me since all of the apartments seem to be good, and its just this one. The other thing we will be doing is re-insulating the windows in apartment. Its just tough to figure out why the problem is since now all the apartments are heated evenly except this one.

@KC_Jones Yes I have undone all those fixes all of the apartments are now evenly heated except this particular one. Still no clue why.

Ironman

Vent the riser like Hatt suggested.

daghstdrummer

@Hatterasguy how do I set up the Gorton 1 Vent on the Radiator?

ChrisJ

@Hatterasguy From what I recall a Gorton D is the same speed as a #1. Perhaps a Gorton D with straight 1/8" connection would be an easier bet?

Danny Scully

You are correct @ChrisJ, same venting capacity.

Abracadabra

Slow down the venting in the hot apartments, they are sucking steam away from the cold ones. Steam condenses there and creates a vacuum before the steam has arrived at the cold apartments' radiators.