Danfoss RA 2000 User Manual

DKCD VD.51.Q1.12 © Danfoss 10/2003 1
EN 215-1
HD 1215-2
Data sheet Radiator Thermostats type RA 2000
Valve bodies type RA-FN and RA-G
Application
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.
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
System
RA-FN straight valve body RA-FN vertical angle valve body RA-FN horizontal angle valve body
All Danfoss RA2000 radiator thermostats are
manufactured to highest standards, and are
Approved to EN 215
approved to the European standard EN 215 and di-
mension standard HD 1215-2, which supersedes BS
6284.
RA 2910 built-in sensor RA 2920 tamperproof RA 5062 remote
sensor temperature adjuster
RA-G straight valve body RA-G vertical angle valve body

Danfoss RA 2000 Specifications

General

Brand	Danfoss
Model	RA 2000
Category	Heater
Language	English

Summary

Thermostatic Sensor Selection

RA2000 Sensor Types and Specifications

Table detailing RA2000 sensor types, code numbers, temperature ranges, and application notes.

RA-FN Valve Body Specifications

RA-FN Valve Body Types and Kv-Values

Specifications for RA-FN valve bodies including connections, kv-values, and pressure ratings.

RA-G Valve Body Specifications

RA-G Valve Body Types and Kv-Values

Specifications for RA-G valve bodies including connections, kv-values, and pressure ratings.

Setting Thermostat Temperature

Temperature Setting Correlation

Correlation between scale settings and room temperatures for different RA2000 sensors.

Sensor Operating Principle

Thermostatic Element Function

Detailed breakdown of the RA2000 thermostatic sensor's components and operation.

Definitions: Kv and Proportional Band

Capacities and Sizing Charts

RA-FN Valve Capacity Charts

Sizing charts for selecting RA-FN valves based on flow rate and pressure drop.

RA-G Valve Capacity Charts

Sizing charts for selecting RA-G valves based on flow rate and pressure drop.

Capacity Sizing Example

An example calculation demonstrating how to use capacity charts and formulas for valve selection.

Thermostat Dimensions

Built-in Sensor Dimensions

Remote Sensor Dimensions

Built-in Tamperproof Sensor Dimensions

Remote Temperature Adjuster Dimensions

Valve Body Dimension Tables

Detailed dimension tables for various RA-FN and RA-G valve body types and connections.