Install Instructions
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Danfoss Inc.
Heating Division
7941 Corporate Drive
Baltimore, MD 21236 USA
Tel.: 443-512-0266, Fax: 443-512-0270
www.na.heating.danfoss.com
Danfoss Inc.
Heating Division
6711 Mississauga Road, Suite 410
Mississauga, ON, L5N 2W3
Tel.: 905-285-2050, Fax: 905-285-2055
www.na.heating.danfoss.com
VISXA122 © Danfoss 10/07
Installation
Instructions
RA2000 One Pipe Steam (1PS)
Thermostatic Radiator Valve
Symptoms Cause / Issue
“Spitting” air vent
Check the pitch of the radiator
•
Fully open the supply valve•
Check riser air vent for main system•
Verify if excessive pressure is within system •
Overheating within room
Ensure thermostatic operator is in an appropriate location•
Move remote sensor or dial/sensor to a different location•
The vacuum breaker mechanism may be clogged with debris•
Verify if excessive pressure is within system•
Under heating within room
Ensure thermostatic operator is in an appropriate location•
Move remote sensor or dial/sensor to a different location•
The air vent may be stuck closed•
Check riser air vent for main system•
Check the pitch of the radiator•
Verify if excessive pressure is within system•
Troubleshooting:
Setting:
The user can easily set room temperature by turning the dial clockwise or
counterclockwise. The diagram to the left shows the approximate 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 45°F.
At its highest setting, the RA 2000-1PS maintains room temperature at
approximately 85°F.
The temperature on all RA 2000-1PS models may be limited or locked (see
instructions included with specic operator for details on this procedure).