WE SAY: REFILL PLEASE!

multicontrol autofill MCA WE SAY: REFILL PLEASE! MULTICONTROL AUTOFILL SOLO MCA-S Ver.03/208-en

OPERATING PRINCIPLE Operating principle Make-up Losses within the system are mostly unavoidable. To ensure a smooth operation refilling from time to time is necessary. 3 contact controlled operation load V 2 P P L u 0 M Y5 Q P P 2 3 heat resp. cool generator storage tank MCA-G M multicontrol autofill solo MCA-S symbolic illustration multicontrol pressure maintenance 3 pressure controlled operation possible supply of multiple pressure maintenance devices load V 2 P P L u 0 M Y5 Q P P MAG heat resp. cool generator storage tank MCA-G M multicontrol autofill solo MCA-S membrane expansion vessel Legend symbolic illustration... make-up pipe... optional circulation pipe 2... expansion overflow pipe (from system return) 2... vessel overflow 3... expansion pressure pipe (to system return) 3... OPTIONAL connection for medium 0... suction pipe recirculation collecting pipe M... make-up pump Y5... switch mixer Q... water counter PLu... vessel pressure transmitter bottom P... system pressure transmitter 2

OPERATING PRINCIPLE Especially in air conditions, cold water systems, solar systems etc. a special medium mixture is used whereby a simple refill of fresh water is not possible. Multicontrol autofill solo MCA-S for automatic, amount controlled make-up of special media offers the possibility to refill a certain amount media mixture out of a storage tank is required. We recommend our multicontrol MCA-G vessels as storage tanks, but they don t have to be used compulsively. On site already existing vessels can possibly be used as storage tanks, because the needed vessel connection unit is always included in scope of delivery of the control unit multicontrol autofill MCA-S. With it the necessary level measurement in the storage tank as well as a permanent temperature measurement in the stored medium is realised. It is distinguished between the following operating modes: contact controlled operation: Thereby control of the MCA-S for example is carried out by a multicotrol pressure maintenance device. If the level within the pressure less expansion vessel falls below a certain minimum level an electric contact will request make-up. The make-up pump (M) supplies ready mixed system medium out of the storage tank (e.g. MCA-G) to the expansion vessel as long as it is refilled up to a preset level. On demand there is the possibility to supply several multicontrol pressure maintenance devices with make-up medium by one multicontrol autofil device. Thereto a make-up module is installed in every supplying pressure maintenance device and via a contact each of these devices can request make-up from the MCA-S. pressure controlled operation: Pressure controlled make-up takes place into the closed system directly. The system pressure is hold constant by a membrane expansion vessel (MAG), nevertheless it can fall by possible leaks. Assumed that the proper function of the MAG is given, make-up can be necessary. Therefore the vessel pressure transmitter (P) registers the actual pressure in the system and compares it with the adjusted set point. Decreases the pressure below the set value the makeup pump (M) starts. It pumps medium from the storage tank directly into the system. As soon as the set pressure is reached, the make-up pump (M) stops. The make-up amout is recorded by a water meter (Q) and compared with the maximum adjusted make-up amount. Is this amount exceeded the make-up stops and the make-up operation is locked. Only after verification and disengaging by the system support engineers, make-up can be activated again. Beside the amount controlled operating mode also a time controlled operating mode is available, which is advantageous in case of known and regular necessary make-up amounts. 3

OPERATING PRINCIPLE / DETAILS Within the storage tank (MCA-G) a vessel pressure transmitter (Plu) for level measurement is arranged. Level measurement bases on pressure measurement of the medium in the storage tank. Out of it the filling height (=vessel level) is determined (also not by weight measurement of load cells at the vessel). By undercutting a certain minimum vessel level make-up stops to protect the make-up pump (M) from running dry. Not before the storage tank (MCA-G) is filled again further make-up can take place. The storage tank is operated as open vessel to avoid negative pressure or overpressure. All connections are mounted on site, which implicates high flexibility because connection positions at the storage tank can be adapted to local conditions. Circulation function A circulation function is also included and after proper piping to the storage tank it can be activated in the settings. It offers the possibility to mix longer stored medium to antagonise settling out different media components at the storage tank bottom. Therefore in the working hydraulics an electromotive activated switch mixer (Y5) is built in already. To start the circulation functon it is activated by the electronic control, either in periodic intervals of directly before any make-up for an adjustment time, depending on the requirements of our costumer. For this purpose the switch mixer (Y5) is carried out as three way mixing valve that is adjusted in position make-up by default and moves to position circulating during the circulation process. Thereupon the make-up pump (M) is activated and circulates the medium via the switch mixer (Y5) from the tank connection unit back to the storage tank. Though all parts of the medium are well mixed again and afterwards make-up can take place. Medium recirculation For safety of financial reasons it can additionally be necessary to prevent a leakage of the particular system medium (e.g. via safety valves,...) and collect it again. For this purpose at the storage tank MCA-G a connection for a collecting pipe for media recirculation is provided. 4

DETAILS Details operator panel with four lines, illuminated plain text display enclosed electronic unit, optimally protected easily accessible cable glands, on request mountable to the left side always included four potential free contacts: - fault - warning - make-up in operation - device operation enabled on-site connections, on request convertible (right or left side) mounting holes in the base plate for fixing the device connection for medium recirculation from system safety valve(s) connection for circulation pipe corrosion resistance: base and piping made of stainless steel, brass/red brass storage tank made of high medium resistant synthetic material tank overflow incl. discharge hopper torsion resistant lattice-work made of zinc-plated steel tube tank emptying for any maintenance continuous temperature control transportable pallet for easy insertion 5

ACCESSORY Your great benefit: Convenient complete solution for make-up of special media from an external tank with connection for a collecting pipe for medium recirculation to the tank Special low-noise, self priming make-up pump From pioneer to number one: 45 years experience in pressure maintenance Company owned costumer service for technical service of your system throughout the product s life Accessory make-up / degassing connection accessory multicontrol autofill vessel MCA-G multicontrol autofill connection set G expansion modules / remote signalling multicontrol autofill connection set MC_ multicontrol expansion module analog signalling multicontrol expansion module binary signalling multicontrol expansion module binary signalling & remote reset multicontrol SMS module multicontrol bus modules general accessory multicontrol metal housing multicontrol contact temperature sensor incl. strap (diameter 5-40mm) multicontrol temperature sensor cable 0m, incl. immersion sleeve G/2", PN0 collecting pan, 3 spacer discharge hopper 50 with siphon For detailled information compare brochure multicontrol original accessory. Further products of our multicontrol series: expansion and pressure maintenance device picocontrol kompakt PCK expansion and pressure maintenance device multicontrol kompakt MCK pressure maintenance device multicontrol modular MCM pressure maintenance device topcontrol modular TCM pressure maintenance device multicontrol cool MCC 6

TECHNICAL DATA Technical data type elko-mat eder multicontrol autofill multicontrol autofill MCA storage tank MCA-G MCA-S-2.7 MCA-S-5.2 MCA-G640 MCA-G000 nominal content litre - 640 000 max. operating pressure unit (PN) bar 0 - max. upper working pressure bar 2,7 5,2 - max. operating pressure vessel (PN) bar - 0 max. temp. at connection point C 70 insertion tilted dimension mm 220 005 45 voltage V/Hz 230/50 - max. electrical power kw 0,6 0,8 - fuse protection A 0 - dimensions A mm 50 200 B mm 225 800 000 C mm 830 005 45 D mm 470 - E mm 405 - F mm 445 - G mm 50 - weight kg 49,5 52 50 63 connections " Rp 3/4-0 " Rp R " Rp R 2" - Geberit DN50 3" - R make-up pipe 0 suction pipe optional circulation pipe 2 vessel overflow 3 optional connection for medium recirculation collecting pipe Technical changes reserved! 0 Positions 0,, 2, 3 on the storage tank MCA-G are adapted to local conditions on site! 7

BETTER HEATING. SAFE BET. www.eder-heizung.at elko-flex eder plant complexity (generating capacity, static height, total content, working pressure) elko-mat eder picocontrol PCK elko-mat eder multicontrol MCK elko-mat eder multicontrol MCM elko-mat eder topcontrol TCM 8 ANTON EDER GMBH Stahl- & Kesselbau, Energie- & Verfahrenstechnik Bramberg Lienz Salzburg Wien Weyerstraße 350 A-5733 Bramberg Tel: 06566/7366 Fax: 06566/827 Mail: info@eder-heizung.at