Table of Contents
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EN 215-1
HD 1215-2
Application
System
Approved to EN 215
DKCD
Radiator Thermostats type RA 2000
Valve bodies type RA-FN and RA-G
RA 2910 built-in sensor
RA-FN straight valve body
RA-G straight valve body
Robustly built and designed to meet the rigours of
the commercial and industrial sectors, a
comprehensive range of RA2000 radiator
thermostats is available for practically all systems
and installation conditions. Sensors and valve
bodies are packed separately so that they can be
mixed and matched for any duty.
Valve bodies are of nickel-plated brass. The
different types are shown below:
RA-FN For steel pipe. Straight, Vertical angled
from 3/8" to 1" BSP and horizontal angled from 3/8"
to ¾" BSP.
RA-G Straight and Vertical Angled for one-pipe
pumped or gravity systems, ½", ¾" and 1" BSP.
RA-N Valves with integral presetting facility. See
separate Data Sheet.
In all valves, the pressure pin of the gland seal is
made of chromium steel and this works in a
lifetime-lubricated O Ring seal. The complete gland
assembly can be replaced without draining down
the system.
All Danfoss RA2000 radiator thermostats are
manufactured to highest standards, and are
VD.51.Q1.12 © Danfoss 10/2003
RA 2920 tamperproof
sensor
RA-FN vertical angle valve body
RA-G vertical angle valve body
The protective cap supplied with each new valve
may be used for manual control during installation
only. It should not be used as isolation device. A
manual shut off device is available as a spare part.
Sensors are available as both standard and
tamperproof, built-in and remote sensing models, as
well as remote adjusting. All have range limiting and
locking. They are for use with Danfoss valve bodies
types RA-FN and RA-G.
RA 2000 sensors are not suitable for use with
RA-FR valves.
RA2000 Features
´ Robust Construction
´ Accurate Temperature Control
´ Full Range
´ Range Limiting and Locking
´ Tamper Resistant Models
´ Remote Sensors
´ Remote Wall Adjuster
´ Low Temperature Models
´ Presetting Valves
approved to the European standard EN 215 and di-
mension standard HD 1215-2, which supersedes BS
6284.
RA 5062 remote
temperature adjuster
RA-FN horizontal angle valve body
1
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Table of Contents
Related Manuals for Danfoss RA-G
Summarization of Contents
Product Introduction and System Overview
Application
Describes the intended use and scope of RA2000 thermostats and valve bodies.
System
Illustrates system diagrams and shows different valve body types for various systems.
Product Selection and Specifications
Thermostatic Sensors
Lists RA2000 thermostatic sensors with code numbers, types, and temperature ranges.
RA-FN Valve Bodies
Details RA-FN valve bodies for two-pipe systems, including connections and kv-values.
RA-G Valve Bodies
Details RA-G valve bodies for one-pipe systems, including connections and kv-values.
Accessories and Temperature Setting
Accessories
Lists available accessories for RA2000 sensors and RA-FN/RA-G valves.
Setting the Temperature
Explains how to set the room temperature and provides scale correlation charts.
Operating Principles and Technical Details
Operating Principles of Thermostats
Explains the function of the actuator unit in sensing and controlling temperature.
Key Considerations
Discusses differential pressure, time constant, flow temperature, and hysteresis.
Sensor Operating Principle
Details the RA2000 thermostatic sensor's bellows system and proportional control mechanism.
Hydraulic Balance
Explains the modified valve characteristic for hydraulic balance during start-up.
Capacities and Fitting Guidelines
Capacities
Provides sizing charts to select the correct valve for radiators based on flow rate and pressure drop.
Fitting Danfoss Radiator Thermostats
Guides on fitting built-in sensors, remote sensors, and remote temperature adjusters.
Changing the Gland Seal
Instructions on how to renew the valve body gland seal while the system is in operation.
Dimensions and Compliance
Dimensions
Provides dimensional drawings and a table of measurements for various valve body types.
Approved to EN 215
Confirms compliance with European standard EN 215 and dimension standard HD 1215-2.
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