R553FSDB248

R553FSDB142 GIACOMINI | Alldatasheet

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Technical content

Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com R553FSDB Datasheet 1026EN  02/2025 Stainless steel manifold with dynamic flow balancing Stainless steel manifold for HVAC systems with dynamic flow balancing and independent setting for each individual circuit, consisting of:

• supply manifold with flow meters with fluid shut-off function;
• return manifold with dynamic flow balancing valves and manual handwheel (M30 x 1,5 mm connection), pre- arranged for thermo-electric command via R473/R473M actuators that can be installed after fitting the relative R453FY002 ring nut (to be ordered separately);
• pair of end pieces with self-sealing complete with drain cocks, manual air vent valves and specific R74 key;
• R588Z metal brackets;
• R73PY010 key for presetting.  NOTE. Manifolds with dynamic flow balancing are equipped with a data-tag with the “DB series” identification, the flow and Δp characteristics for both versions of the manifolds: Low Flow and High Flow. R73PY010 INCLUDED The R553FSDB manifolds are available in 2 versions, with distinct characteristics: High Flow version
• Flow meters double scale: 0÷5 l/min and 0÷1,5 GPM
• Internal membrane of the bonnet: black color (visible only in case of bonnet replacement) Low Flow version
• Flow meters scale: 0÷2,5 l/min
• Internal membrane of the bonnet: red color (visible only in case of bonnet replacement)  Working differential pressure range: 20÷60 kPa  Working differential pressure range: 30/40÷150 kPa

Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com  Versions and product codes PRODUCT CODE CONNECTIONS: MANIFOLD x OUTLETS No. OUTLETS CABINET R500-2 L x H x D R553FSDB142 G 1” x 3/4”E R500Y221 400x650x85÷130 mm R553FSDB143 3 R553FSDB144 4 R500Y222 600x650x85÷130 mm R553FSDB145 5 R553FSDB146 6 R553FSDB147 7 R553FSDB148 8 R500Y223 800x650x85÷130 mm R553FSDB149 9 R553FSDB150 10 R553FSDB151 11 R500Y224 1000x650x85÷130 mm R553FSDB152 12 PRODUCT CODE CONNECTIONS: MANIFOLD x OUTLETS No. OUTLETS CABINET R500-2 L x H x D R553FSDB242 G 1” x 3/4”E R500Y221 400x650x85÷130 mm R553FSDB243 3 R553FSDB244 4 R500Y222 600x650x85÷130 mm R553FSDB245 5 R553FSDB246 6 R553FSDB247 7 R553FSDB248 8 R500Y223 800x650x85÷130 mm R553FSDB249 9 R553FSDB250 10 R553FSDB251 11 R500Y224 1000x650x85÷130 mm R553FSDB252 12 Low Flow version: Δp 20÷60 kPa High Flow version: Δp 30/ 40÷150 kPa Optionals

• R500-2: flush-mounting metal cabinet, with adjustable depth
• R473, R473M: normally closed thermo-electric actuators
• R453FY002: M30 x 1,5 mm plastic ring nut for installing thermo-electric actuators
• R178E, R179E: 3/ 4”E adaptors Spare parts
• P12HDBX001: Low Flow bonnet with dynamic balancing (red internal membrane)
• P12HDBX002: High Flow bonnet with dynamic balancing (black internal membrane)
• P78MSX001: flow meter with scale 0÷2,5 l/min
• P78MSX002: flow meter with double scale: 0÷5 l/min and 0÷1,5 GPM
• R588ZY001: metal bracket with supports
• R73PY010: key for presetting Optional kits  NOTE. Manifold/cabinet combinations are applicable for manifolds with end pieces only, WITH NO optional kits installed.PRODUCT CODE CONNECTIONS R259SX077 G 1”F x G 1”M R259KX006 G 3/4”F x G 1”M R259KX007 G 1”F x G 1”M R859KX016 G 3/4”F x G 1”M R859KX017 G 1”F x G 1”M R859KX026 G 3/4”F x G 1”M R859KX027 G 1”F x G 1”M

Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com  WARNINGS.

• R553FSDB manifolds are suitable for use in closed circuit systems and with non-aggressive fluids (water or water-glycol mix in compliance with VDI 2035/ONORM 5195).
• Mineral oils or mineral oil based lubricants in the heat transfer fluid may cause swelling and damage to EPDM gaskets.
• In case of using nitrite-free, ethylene glycol-based antifreeze and anti-corrosion products, observe the instructions in the documentation provided by the manufacturer and, in particular, the instructions concerning concentration and the use of specific additives.
• In case of high levels of sludge and other contaminants in the system water, is recommend flushing the system using a chemical cleaning product before installing the manifolds.  Technical data Materials
• Supply and return manifolds: AISI 304 stainless steel
• End pieces and drain cocks: chrome-plated brass
• Gaskets: EPDM
• Manifold brackets: galvanised steel
• Manual handwheel: plastic material
• Bonnet with dynamic balancing on return manifold: - command stem: stainless steel - bonnet body: UNI EN 12164 CW617N brass - sleeve and indicator ring: plastic material - O-Ring and stopper: EPDM - membrane: elastomeric material Adjustment accuracy ∆p max∆p min % error (Q) -40 Low Flow version performances
• Fluids: water, glycol solutions (max. 30 %)
• Center distance between the outlets: 50 mm
• Temperature range: 5÷70 °C
• Max. working pressure: 6 bar (10 bar for system testing)
• Flow rate setting range for each individual circuit: 20÷160 l/h
• Working differential pressure range: 20÷60 kPa
• Flow meters: scale 0÷2,5 l/min High Flow version performances
• Fluids: water, glycol solutions (max. 30 %)
• Center distance between the outlets: 50 mm
• Temperature range: 5÷70 °C
• Max. working pressure: 6 bar (10 bar for system testing)
• Max. differential pressure with thermo-electric actuators installed: 1,5 bar
• Flow rate setting range for each individual circuit: 10÷250 l/h
• Working differential pressure range: 30/ 40÷150 kPa
• Flow meters: double scale 0÷5 l/min and 0÷1,5 GPM

Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com  Components

1 Indicator ring

2 Command stem

3 Stopper

4 Regulator sleeves

5 Balancing membrane with controlled deformation

Bonnet with dynamic flow balancing

1 Supply manifold with outlets equipped with flow meters

2 Return manifold with outlets with dynamic flow balancing valves

3 Manual air vent valve

4 Drain cock

5 Metal brackets

Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com The R553FSDB manifold controls the flow rate in each individual circuit of the system, within a minimum and maximum value of differential pressure, independently of the operating conditions of the other circuits. The manifold may be used in combination with the thermo-electric actuators to perform different functions:

• flow rate regulator: when the pressure changes, due to the opening or closing of some other circuits, the membrane of the bonnet cartridge deforms to alter the cross section of the fluid passage through the membrane itself and keep the flow rate at the preset value, even with high differential pressures: up to 60 kPa for the Low Flow version; up to 150 kPa for the High Flow version.
• presetting flow rate: the maximum design flow rate for each individual circuit may be set and maintained accurately at all times;
• optimising room temperature: the manifold may be used in combination with thermo-electric actuators and thermostats to allow more effective and efficient temperature control in multiple interior rooms. ∆p [kPa] ∆p max∆p min Q [l/h] Presetted flow rate  Operation DESIGN LOAD R553FS G 100 % G 100 % PARTIAL LOAD R553FS R553FSDB R553FSDB G 0 % CLOSED CIRCUIT G 0 % CLOSED CIRCUIT G 100 % G 100 % G 100 % G 100 % G 100 % G 100 % G 100 % G 100 % G 100 % G 120 % G 120 % G 120 % DESIGN LOAD PARTIAL LOAD Radiant system with R553FS manifolds, without dynamic flow balancing DESIGN LOAD R553FS G 100 % G 100 % PARTIAL LOAD R553FS R553FSDB R553FSDB G 0 % CLOSED CIRCUIT G 0 % CLOSED CIRCUIT G 100 % G 100 % G 100 % G 100 % G 100 % G 100 % G 100 % G 100 % G 100 % G 120 % G 120 % G 120 % DESIGN LOAD PARTIAL LOAD Radiant system with R553FSDB manifolds, with dynamic flow balancing Manifolds with dynamic flow balancing are used primarily in radiant systems. As can be seen in the example installation diagrams shown below, a system using DB manifolds series with dynamic flow balancing is capable to maintain the flow rates always balanced in all the circuits of the system.

Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com  WARNING. To ensure the correct functioning of the system, it is important that the flow meters are set to either the fully open position or, if it is necessary to shut off the respective circuit, the completely closed position. Do not set the flow meters to any position between fully open and fully closed.  Regulating the system circuits Supply manifold During normal operation, the flow meters on the supply manifold should be in the fully open position. To shut off the flow of an individual circuit, close the respective flow meter completely. To open or close a flow meter: 1) remove the protective red cap; 2) manually rotate the black ring nut of the flow meter clockwise to close the circuit or counterclockwise to open the circuit: - the flow is completely shut off when the flow meter is completely closed; - when the flow meter is completely opened, the flow rate set with the dynamic balancing bonnet (return manifold) is circulating within the circuit and indicated on the graduated scale of the flow meter; 3) when the setting is complete, refit the protective red cap. 1 2 3  NOTE. The flow meter is equipped with a flow indicator, to be positioned at the flow rate set for the relative hydraulic circuit.  Installation  WARNING. Installation must be carried out by qualified personnel, following the instructions included in the packaging. To connect the system circuit pipes use suitable adaptors for copper, plastic or multilayer pipes from the R178E and R179E (Eurocone) series.  WARNING. W h e n t i g h t e n i n g t h e a d a p t o r i t i s n e c e s s a r y t o u s e a b a c k u p spanner to hold the manifold fitting in place. Connecting the system circuits BACKUP SPANNER Installing end pieces The manifold comes preassembled onto the R588Z brackets, pre-arranged for connection of the end pieces. The end pieces are packaged in boxes as disassembled components. To assemble, first install the intermediate fitting (A) onto the manifold and then install the drain cock (B) on the bottom of the intermediate fitting and the air vent valve (C) on the top of the fitting. Note that these components are self-sealing and require no additional sealing measures. A B C Max. 25 Nm 5 Nm 5 Nm A B C

Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com Return manifold: presetting flow rate The flow rates of the individual circuits connected to the return outlets may be preset with the R73PY010 regulation key (included in package) within a setting range from 1 to 6, indicated on the cartridge of the bonnet. To preset the flow rates of the individual circuits: 1) identify the cartridge position corresponding to the desired flow rate using the flow rate presetting diagrams or tables; 2) remove the manual handwheel from the bonnet and fit the regulation key onto the cartridge; 3) turn the regulation key till the desired position appears in the key slot; 4) remove the regulation key and refit the manual handwheel or the thermo-electric actuator. R73PY010 R73PY010 5 4 3 5 4 3 R73PY010 R73PY010 5 4 3 5 4 3 R73PY010 R73PY010 5 4 3 5 4 3 R73PY010 R73PY010 5 4 3 5 4 3 R73PY010 R73PY010 5 4 3 5 4 3 Q [l/h] 0 30 60 90 120 150 ∆p [kPa] 200 150 100 250 Pos.1 10 l/h Pos.2 40 l/h Pos.3 90 l/h Pos.4 170 l/h Pos.5 200 l/h Pos.6 250 l/h

1 High Flow version

Q [l/h] 0 10 20 30 40 50 60 ∆p [kPa] 100 120 140 160 180 Pos.1 20 l/h Pos.2 60 l/h Pos.3 80 l/h Pos.4 100 l/h Pos.5 135 l/h Pos.6 160 l/h

1 Low Flow version

 NOTE. Δp min = Δp corresponding to a value ≥ 80 % of the preset flow rate. Setting position 1 2 3 (factory setting) 5 6 Flow rate [l/h] 20 60 80 100 135 160 Δp min [kPa] 20 20 20 20 20 20 Δp max [kPa] 60 Setting position 1 2 3 (factory setting) 5 6 Flow rate [l/h] 10 40 90 170 200 250 Δp min [kPa] 40 40 40 40 40 30 Δp max [kPa] 150

Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com

1 R453FY002

15° PUSH A R453FY002 R473/R473M 15° PUSH A R453FY002 R473/R473M 15° PUSH A 4 R453FY002 R473/R473M 15° PUSH A  WARNING. In case of use of R500-2 cabinets, to facilitate installation the thermo-electric actuators must be fitted with the red button (A) turned towards the interior of the cabinet. If required, the red button may be pressed before fitting the actuator onto the manifold. In this case, slightly more force will be necessary to subsequently connect the actuator. Return manifold: installing thermo-electric actuators Using normally closed thermo-electric actuators (R473, R473M) installed on the return manifold outlets, in combination with room thermostats, allows the room temperature to be maintained at the value set on the thermostats. The thermo-electric actuators must only be installed after presetting the flow rate on the dynamic balancing bonnet. To install the thermo-electric actuators proceed as follows: 1) remove the manual handwheel and tighten the R453FY002 ring nut with M30 x 1,5 mm connection (to be ordered separately); 2) assemble the thermo-electric actuator on the ring nut, pressing just enough to lock them together; 3) turn the actuator about 15° clockwise until a click is heard (max. torque 5 Nm). To release the actuator, turn it 15° counterclockwise); 4) press the red lockout button (A) and make the electrical connection of the actuator, following the wired diagram supplied with the actuator instructions.  VIDEO TUTORIAL FLUSHING AND FILLING PROCEDURE  WARNING. The system flushing and filling procedure for manifolds with dynamic balancing is different from “standard” manifolds. Carefully follow the instructions with the product to avoid damage to people or property.

Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com  Dimensions PRODUCT CODE NO. OUTLETS A [mm] B [mm] C [mm] D [mm] E [mm] F [mm] G [mm] H [mm] I [mm] L [mm] M [mm] N [mm] P [mm] R [mm] S [mm] T [mm] CABINET R500-2 R553FSDB142 R553FSDB242 2 38 3/4”E 102 61 209 109 G 1” 378 50 185 50 197 110 49 86 35 R500Y221 R553FSDB143 R553FSDB243 3 235 160 R553FSDB144 R553FSDB244 4 285 210 R500Y222 R553FSDB145 R553FSDB245 5 335 260 R553FSDB146 R553FSDB246 6 385 310 R553FSDB147 R553FSDB247 7 435 360 R553FSDB148 R553FSDB248 8 485 410 R500Y223R553FSDB149 R553FSDB249 9 535 460 R553FSDB150 R553FSDB250 10 585 510 R553FSDB151 R553FSDB251 11 635 560 R500Y224 R553FSDB152 R553FSDB252 12 685 610 R500Y221 (400x650x85÷130 mm) R500Y222 (600x650x85÷130 mm) R500Y223 (800x650x85÷130 mm) R500Y224 (1000x650x85÷130 mm) A I I L I C R S FED H B P T GG M N

Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com  Product specifications R553FSDB Low Flow Preassembled manifold with dynamic flow balancing. Connections: G 1”F x 3/ 4”E. Consisting of: stainless steel supply manifold with flow meters with 0÷2,5 l/min scale and fluid shut-off function; stainless steel return manifold with dynamic flow balancing valve (membrane with red color) and manual handwheel pre-arranged for thermo-electric actuators. End pieces and drain cock in chrome-plated brass. EPDM gaskets. Galvanised steel brackets for manifolds. Fluids: water, glycol solutions system testing). Flow rate setting range for each individual circuit: 20÷160 l/h. Working differential pressure range: 20÷60 kPa. R553FSDB High Flow Preassembled manifold with dynamic flow balancing. Connections: G 1”F x 3/ 4”E. Consisting of: stainless steel supply manifold with flow meters with double scale 0÷5 l/min and 0÷1,5 GPM and fluid shut-off function; stainless steel return manifold with dynamic flow balancing valve (membrane with black color) and manual handwheel pre-arranged for thermo- electric actuators. End pieces and drain cock in chrome-plated brass. EPDM gaskets. Galvanised steel brackets for manifolds. pressure: 6 bar (10 bar for system testing). Max. differential pressure with thermo-electric actuators installed: 1,5 bar. Flow rate setting range for each individual circuit: 10÷250 l/h. Working differential pressure range: 30/ 40÷150 kPa.  Package Disposal. Carton boxes: paper recycling. Plastic bags and bubble wrap: plastic recycling.  Product Disposal. Do not dispose of product as municipal waste at the end of its life cycle. Dispose of product at a special recycling platform managed by local authorities or at retailers providing this type of service.  Safety Warning. Installation, commissioning and periodical maintenance of the product must be carried out by qualified operators in compliance with national regulations and/or local standards. A qualified installer must take all required measures, including use of Individual Protection Devices, for his and others’ safety. An improper installation may damage people, animals or objects towards which Giacomini S.p.A. may not be held liable.  Additional information. For more information, go to giacomini.com or contact our technical at any time, without notice and for technical or commercial reasons, the items included herewith. The information included in this technical sheet do not exempt the user from strictly complying with the rules and good practice standards in force.