launderess
Well-known member
Outdoor Temperature Resets
Are very much a part of most all modern steam and hot water heating systems, especially for large multi-family buildings. You see those metal "twinkie" shaped boxes all over NYC and for good reason.
ODRs allow for finer control of how hot the boiler heats water. Warmer temperatures outdoors means you don't need that much heat indoors thus you can use lower water temps (subject to the aquastat settings).
http://www.energydepot.com/RPUcom/library/HVAC006.asp
Are very much a part of most all modern steam and hot water heating systems, especially for large multi-family buildings. You see those metal "twinkie" shaped boxes all over NYC and for good reason.
ODRs allow for finer control of how hot the boiler heats water. Warmer temperatures outdoors means you don't need that much heat indoors thus you can use lower water temps (subject to the aquastat settings).
http://www.energydepot.com/RPUcom/library/HVAC006.asp