Submittal Sheet

How To Avoid
Problems
Setting
The operator with valve-mounted dial and
sensor must be mounted horizontally.
IMPORTANT
In one-pipe steam systems sufficient pitch is
required to permit condensate return.
Condensate should not be trapped in the valve
or vent. The vent (when not supplied) should be
checked to assure it is properly working.
Boiler/steam supply must not run at constant
pressure. This prevents the ability for air to
enter back into the system.
Make sure that free-standing radiators or cast
iron convectors are properly pitched and that
hand valves are FULLY open.
To aid in preventing overheating of rooms that
are temperature satisfied, boiler steam
pressure must be kept low, recommended
normally at or below 2psig. Otherwise air will
be compressed in the radiator, allowing steam
to enter when not required.
The user can easily set room temperature by turning the dial clockwise or counterclockwise.
The diagram to the right shows the appropriate relationship between dial scale numbers and
room temperature.
At its lowest setting, the RA 2000-1PS provides frost protection and maintains room
temperature at approximately 45Deg.F.
At its highest setting, the RA 2000-1PS maintains room temperature at approximately 85Deg.F.
The temperature on all RA 2000-1PS models may be limited or locked.
RA 2000 1PS
Thermostatic Radiator Valve
For Use on One-Pipe Low-Pressure
Steam Systems
Data sheet
VDSXA122 ©Danfoss 07/07
Danfoss Inc.
7941 Corporate Drive
Baltimore, MD 21236 USA
Tel.: [phone], Fax: [phone]
www.na.heating.danfoss.com
Danfoss Inc.
6711 Mississauga Road, Suite 410
Mississauga, ON, L5N 2W3
Tel.: [phone], Fax: [phone]
www.na.heating.danfoss.com
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FEDGRA