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Normally Open (valve open)

In case of the normally open version, ram motion is redirected by

mechanical means, resulting in precisely opposite actuator function.

Functions

Normally Closed (valve closed)

The valve is opened steadily by the piston motion upon switching on

the operating voltage and after expiry of the dead time. The wax

element cools down after the operating voltage is cut and after

expiry of the hold time, the valve is closed evenly by the closing force

of the compression spring.

The closing force of the compression spring is matched to the closing

force of commercially available valves and keeps the valve normally

closed.

Valve-Adapter-Concept

A valve-adapter concept guarantees a perfect match of the actuator

to almost any valve bottom or heating circuit distributor available

on the market. Simply snap-on the OEM-Actuator to the pre-installed

valve adapter.

Function Display

The function display of the OEM-Actuator (all-round display) allows

identifying the operating condition (valve open or closed) at a glance.

Standard Version

Alternative Version

The actuator mechanism of the OEM-Actuator uses a PTC resistor-

heated elastic element and a compression spring. The wax element

is heated by applying the operating voltage and moves the integrated

piston. The force generated by the movement is transferred on the

piston lifter and thus opens and closes the valve.

First-Open function (for NC only)

In its delivery condition, the OEM-Actuator is kept open when de-

energised due to the First-Open function (filling). This enables heating

operation during the carcass construction phase even when the

electric wiring is not yet complete. During the later electrical start-

up, the First-Open function is unlocked by applying the operating

voltage for more than 6 minutes. The OEM-Actuator  will then be

completely operable.

Actuators

Technical Information

OEM-Actuator

OEM-Actuator 24 V

The OEM-Actuator serves for optimum control of valves on heating

circuit distributors. Control is done a room thermostat 

with two-

point output or pulse-width modulation.

Application

General Information

Scope of Supply (standard)

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1x OEM-Actuator (Version: normally closed)

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1x cable 1 meter

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1x installation manual with ten languages

Alternative Version:

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Version normally open

Type

A 4004: Version 24 V – normally closed 

A 4104: Version 24 V – normally open

Optional available extensions:

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  First-Open function (only for normally closed)

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  non halogen connection cable

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  Other cable length are available

Accessories

A valve adapter suiting your application can be enclosed in the

actuator packing.

Customer-specific Version

Customer-specific versions are possible on request.

Ordering Information

Our staff will be glad to assist you in finding the actuator fitting your

application. Call us at: +49 5341 - 84 75 - 0

Features

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OEM design

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Compact size, small dimensions

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Available in normally closed (NC) or normally open (NO)

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Patented 100% protection against leaky valves

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All around function indicator

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Maintenance-free

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Noiseless

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High functional safety and long expected service life

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Low power consumption

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360° installation position

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Snap-on installation

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Valve-adapter concept

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Adaptation check on valve

The OEM-Actuator 24 V is a thermoelectric actuator for opening and

closing valves on heating circuit distributors of concealed floor heating

and cooling systems.
The OEM-Actuator has been developed especially for customer-

specific usage in the oem business. Features, as protection in case of

leaky valves, compact and modern casing, versions in normally closed

and normally open, valve adapter concept and an enhanced life time

have  been  of  particular  importance.  This  allows  to  fulfill  the

requirements within the bounds of technical reliability, improved

installation and customer-/service friendliness for manufacturer of

concealed  floor  heating  and  cooling  systems.  Additional

differentiations through customer specific versions are possible.
The OEM-Actuator 24 V is controlled by a 24 V room thermostat with

two-point output or pulse-width modulation.

In General

Extended Version

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