for domestic hot water heating Application Electric actuator with process controller for local heat supply and district heating networks Special features The electric actuator with process controller is an electric actuator combined with an integrated digital controller used to position valves (DN 15 to 25). It is used to control domestic hot water heating in instantaneous heating systems used in small to medium-sized buildings connected to a district heating or local heat supply network. It is particularly suitable for mounting to SAMSON Types 3222, 3222 N and 2488 Valves as well as to special versions of Type 3226 and Type 3260 Valves. • Control using two different set points, e.g. DHW temperature and DHW temperature for thermal disinfection. A binary input is used to switch between the set points. • Function to maintain water temperature constant, preventing the heat exchanger from cooling down between tapping • Direction of action reversible - Globe valve opens when the actuator stem retracts (increasing/increasing) - Three-way mixing valve mixes/diverts the flow(s) when the actuator stem extends (increasing/decreasing) • Limit value monitoring: - The valve is closed by the actuator when the maximum adjustable limit is exceeded - The frost protection function is started when the temperature falls below the minimum adjustable limit • Configuration, parameterization, diagnostic function and online connection for monitoring using the TROVIS-VIEW software - Direct data transmission using a connecting cable (direct connection to computer) - Data transmission over a memory pen • Special valve version available for small tapping amounts SAMSON AKTIENGESELLSCHAFT ■ WeismullerstraBe 3 ■ 60314 Frankfurt am Main, Germany Phone: +49 69 4009-0 ■ Fax: +49 69 4009-1507 ■ [email protected] ■ www.samsongroup.com Fig.1 : TROVIS 5757-3 Electric Actuator with Process Controller

Design and principle of operation The use of the Type 5207-0060 Pt1000 Sensor is recommended in conjunction with a sensor pocket to provide optimal positioning of the temperature sensor at the heat exchanger. The 0/4 to 20 mA current input can be used in place of the Pt1000 sensor for control purposes or as the reference variable. In addition, a water flow sensor or a flow switch can be connected to quickly recognize when hot water is being tapped or to improve the control accuracy even further. Fig. 4 shows a sample application. Output The switching output can be configured as either a pump...

2 Temperature sensor including sensor pocket (VSjw) 3 Supply from district heating network (VL) 4 TROVIS 5757-3 Electric Actuator with Process Controller 5 Water flow sensor with connecting cable 6 Return flow to district heating network (RL) RL Return flow pipe VSTW Flow sensor WSS Water flow sensor Fig. 4: Sample application: domestic hot water heating with Pt!000 sensor and water flow sensor Supply line BN Brown BU Blue BK Black ! DANGER Live wires Do not touch wire ends. Fig. 5: Electrical connection ■ Supply line Fig. 6: Terminal assignment of RJ-12 jack

BN Brown BU Blue BK Black Fig. 7: Electrical connection ■ Supply line Control line Temperature sensor and binary inputs Pt1000 j Binary contact for set point switchover BE1 Flow switch Water flow sensor 1 Information on connection of water flow sensor (see Fig. 9). Water flow sensor 1) Current input for set point or measured value OG Orange YE Yellow RD Red BN Brown BK Black GN Green Fig.8 : Electrical connection of TROVIS 5757-3 ■ Control line

Water flow sensor (WSS) Extension cable Black Brown Green White Fig. 9: Electrical connection of TROVIS 5757-3 · Water flow sensor (WSS)

Table 1: Technical data • TROVIS 5757-3 Electric Actuator with Process Controller 1 Recommendation: use devices with gold contacts when using relays. 2) Insulate any wires that are not used. 3) The permissible medium temperature depends on the valve on which the electric actuator with process controller is mounted. The limits in the valve documentation apply.

eL Stem retracts aL Stem extends Fig. 10: Dimensions in mm · TROVIS 5757-3 Electric Actuator with Process Controller Sensor pocket (including gasket) for heat exchanger with G ¾ Connecting piece (including gasket) for valve G ¾ Circulation pipe connection (including gasket) Water flow sensor with extension cable Sensor pocket (including gasket) for heat exchanger with G 1 Connecting piece (including gasket) for valve G 1

TROVIS 5757-3 Electric Actuator with Process Controller - With switching output Associated mounting and operating - TROVIS 5757-3 Electric Actuator with Process Controller Associated Configuration Manual - TROVIS 5757-3 Electric Actuator with Process Controller - Type 5207-0060 Pt1000 Sensor (fast response) Specifications subject to change without notice