Danfoss RAE 8254, RAE 8256 Data sheet
Data Sheet
RAE 2000 Thermostatic Operator
Application:
Technical
Specications:
RAE 8254
The RAE 2000 series of thermostatic operators
are designed for use in residential hot water and
low pressure steam heating systems. This nonelectric self-actuating proportional controller
provides eective regulation of temperature
within the space.
RAE 2000 operators are equipped with a tool free
snap on lock mechanism that allows mounting
of the operator to the RA2000 series of valve
bodies.
Thermostatic operator charge Liquid
Max. dierential pressure, close o 15 psi (1 bar), across valve body
Suitable valve mounting RA2000, RA-C, RA 15/6
Max. sensor temperature 140°F (60°C)
Adjustable temp. range 46° to 82°F (8° to 28°C)
Incorporated into the RAE operator are features
that include a ‘Freeze Protection Setting’. For the
RAE 8256 which utilizes a remote sensor, a 6ft
(2m) ultra-thin capillary tube is coiled within the
remote sensor housing. After the operator has
been mounted the capillary tube is pulled out to
the required length.
RAE 8256
Data and Ordering:
Type Version Setting Range Code no.
RAE 8254 Built-in sensor
Remote sensor
RAE 8256
VDLTG122 © Danfoss 07/17
capillary length 6 ft
(2 m)
46˚ to 82˚ F
(8˚ to 28˚ C)
013G 8254
013G 8256
1
Data Sheet RAE Thermostatic Operator
Data and Ordering
Cont.:
RA2000 Valves
Valve Pipe Size Valve Ty p e Connection Code No.
½”
¾” 013G 8 020
1” 013G 8 025
1-¼” 013G 8 032
½”
¾” 013G8019
1” 013G 8 024
1-¼” 013G8031
½”
¾” 013G8018
1” 013G 8 023
1-¼” 013G 8030
Straight
Angle
Side Mount
Angle
013G8015
013G 8 014
FNPT x MNPT
Union Tailpiece
013G 8 013
Design:
½”
¾” 013G 8 0 4 4
The RAE thermostatic operator operates with a
liquid lled bellows system, which is actuated by
ambient temperature changes.
The calibrated pressure in the bellows corresponds
to the temperature. This pressure is balanced by
the force of a regulating spring.
On a rise in ambient temperature, the pressure
increases in the bellows, moving the valve cone
Straight
Double Female
Solder Unions
towards the ‘closed’ position, until equilibrium
exists between the bellows and spring.
On a drop in ambient temperature, the pressure
falls, allowing the bellows to contract and the
valve cone to move towards the ‘open’ position
until a state of equilibrium is re-established.
013G 8 0 42
1. Socket
2. Bellows
3. Setting handle
4. Setting mark
5. Limiter tab
6. Reset spring
7. Sensor medium
8. Spindle
9. Spring
10. Capillar tube
11. Console
12. Cover
2
VDLTG122 © Danfoss 07/17
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