steam air vents

Mark929

installed Hoffman non-adjustable air vents on all 7 rad. Second floor, where bedroom are, is 4 degrees cooler.
First floor has thermostat is no doubt shutting down when it gets to set point. Should I replace rad nearest to thermostat with variable air vent and set to 1-8, leave at 5? thoughts...

Jamie Hall

The general rule applies: assuming you have adequate main venting, if a room is overheating or heating too fast, place a slower vent on that radiator.

dopey27177

Typically, when an imbalance occurs such as you have where the thermostat shuts down the boiler before the second floor is heated take two of the slow venting air valves from the second floor and switch it to the radiators nearest the tstat.
By slowing the steam supply to the radiators it may change the steam supply to the upper floors and heat the rooms where you have less heat. If that corrects the problem in two of the radiators switch out the remaining air valves to the faster valves on the upper floors and the remaining Hoffman valves on the first floor.

Jake .

Mark929

Jamie Hall said:

The general rule applies: assuming you have adequate main venting, if a room is overheating or heating too fast, place a slower vent on that radiator.

@Jamie Hall what is meant by adequate main venting?

Mark929

dopey27177 said:

Typically, when an imbalance occurs such as you have where the thermostat shuts down the boiler before the second floor is heated take two of the slow venting air valves from the second floor and switch it to the radiators nearest the tstat.
By slowing the steam supply to the radiators it may change the steam supply to the upper floors and heat the rooms where you have less heat. If that corrects the problem in two of the radiators switch out the remaining air valves to the faster valves on the upper floors and the remaining Hoffman valves on the first floor.

Jake .

i should say i assume the thermo hits it target and shuts down and is why the heat didint stay on and continue to heat the 2nd floor, alas 4 degrees different.