R557RY024

R557RY024 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 R557R-2 Datasheet/Instruction 0477EN  01/2024 047U52848 Preassembled manifold with fixed point regulation, for heating systems The R557R-2 preassembled manifold is used for the regulation of heating in mixed systems, or in the case of simultaneous installation of heating elements supplied at high temperature (toweldryers, radiators, ecc...) and radiant floor circuits to be supplied with mixed water (low temperature). The unit is preassembled into a cabinet with adjustable depth, with distribution manifolds from 4 to 12 outlets for low temperature circuits while the manifolds for high temperature circuits must be ordered separately. The circulator is self-modulating, compliant with the ErP 2009/125/EC Directive, precabled with K373 safety thermostat. The temperature control is of a thermostatic type with R462L thermostatic head. Completion codes

• R553AY002: kit for high temperature water; nr. 2 delivery and return outlets of 1” (brackets included)
• R553AY002: kit for high temperature water; nr. 3 delivery and return outlets of 1” (brackets included)
• GE550Y100: delivery and return thermal energy metering kit of 1”, complete with filter, zone valve and plastic spacer for meter installation (bracket R588RY010, energy meter GE552 and actuator K270 not included)
• R557W: insulation for manifold R557R-2 Spare parts
• R557Y061: frame + door for cabinet R557RY075
• R557Y062: frame + door for cabinet R557RY076
• R557Y063: frame + door for cabinet R557RY077
• R588RY010: single bracket
• P76WIY016: circulator 25/7; center distance 130 mm
• R462LX001: thermostatic head with remote liquid sensor  Versions and product codes PRODUCT CODE CONNECTIONS MANIFOLD x OUTLETS Nr OF OUTLETS FOR LOW TEMPERATURE CABINET L x H x D [mm] R557RY024 G 1”M x B.18 4 850 x 605 x 115÷150 (R557RY075)R557RY025 5 R557RY026 6 1000 x 605 x 115÷150 (R557RY076)R557RY027 7 R557RY028 8 R557RY029 9 1200 x 605 x 115÷150 (R557RY077) R557RY030 10 R557RY031 11 R557RY032 12  NOTE. The minimum depth of the metal cabinet is 110 mm, however the pre-assembled manifold requires at least 115 mm of depth. In case of installation with insulation, the minimum depth is 125 mm.

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

• Temperature range: 5÷110 °C
• Max. working pressure: 10 bar
• Outlets center distance: 50 mm
• Supply water temperature: 75÷80 °C
• Working temperature difference: ΔT 6÷7 °C
• Working temperature for low temperature water usage points: 40÷45 °C (position 2,5 / 3 of thermostatic head R462L)
• Temperature range of thermostatic head R462L: 20÷70 °C
• Self-modulating circulator 25/7, center distance 130 mm Materials
• Manifold and main components: ottone
• Return manifold handwheels: plastic
• Metallic cabinet: galvanized sheet metal
• Seals: EPDM

1 Metallic cabinet

2 Fluid inlet from boiler room

3 Fluid return to boiler room

4 Three-way valve with R462L thermostatic head

5 Primary lockshield

6 Secondary lockshield

7 Housing for safety thermostat probe

8 Shut-off valve for circulator

9 Manual air vent valve

10 Circulator

11 Drain cock

12 Thermometers

13 Delivery manifold for low temperature system

14 Return manifold for low temperature system

15 Rails for manifold

16 Rails for high temperature water completion kit or metering kit

17 Safety thermostat

18 Housing for thermostatic head probe

 Components 4 8 9 151112 7 911128 All components are preassembled:

• a delivery manifold R553M equipped with flow meter (0.5-5 l/min); the delivery manifold is composed by a drawn brass bar with an internal balancing lockshield with mechanical memory for each connection. This allows the detection and the maintenance of the calibration position into the single circuits, even in case of total shut-off. The mechanical memory is made of an appropriate ring that, regulated by R558 key, allows limiting the maximum opening of the lockshield to the value chosen at the balancing stage.
• a return manifold R553V; the return manifold is equipped with micrometric shut-off valves with thermostatic option, that allow the manual opening and closing of the circuits. The automatic temperature control of the single rooms is possible, by installing normally closed thermo-electric actuators (R473/R473M series) or normally open ones (R478/R478M). The installation of the actuators occurs by releasing the micrometric handwheel on the manifolds, and freeing the valve connection.

Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com  Operation The fluid coming from the boiler room enters from the connection (Components - Ref. 2) and is partly diverted to the high temperature circuits of the system (if kit R553A is present). The regulation of the supply water temperature is made by the three-way valve (Components - Ref.4) on which the R462L thermostatic head is installed, equipped with a temperature probe immersed into the housing on the delivery pipe (Components - Ref.7). A part of the fluid returning from the floor heating system equal to the flow inlet from the valve (Components - Ref.4), goes to the lockshield (Components - Ref.6) and then to the primary return circuit (Components - Ref. 3); the rest of the fluid is aspired by the circulator (Components - Ref.10) and put back into the system, mixed with the part of the fluid at high temperature coming from the valve (Components - Ref.4). The lockshield (Components - Ref. 5) is used to balance the primary circuit. The installation of the GE550 kit in combination with the K270 actuator for the two-way zone valve and the GE552 thermal energy meter, allows to meter the thermal energy used for heating. INLET FROM BOILER ROOM RETURN TO BOILER ROOM LOW TEMPERATURE SYSTEM RETURN LOW TEMPERATURE SYSTEM DELIVERY HIGH TEMPERATURE SYSTEM DELIVERY HIGH TEMPERATURE SYSTEM RETURN

Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com Example of installation Installation with high temperature water circuit kit R553A Installation with metering kit GE550 K270 GE552  Installation It is suggested to install the R557R-2 unit in a place that permits an easy inspection. Before proceeding with the installation of the cabinet, the frontal cover and the respective support frame shall be removed; they will have to be reinstalled at the end of the wall finishing operations (tiling or painting). The connections arranged for the joint of the radiant floor circuits, are characterised by Giacomini base 18 connections. For the connection of the radiator supply pipes and radiant panel circuits, suitable adapters are used depending on the material of the pipe. The R557R-2 unit can be installed together with the various options depending on the system requirements:  WARNING. Installation must be carried out by authorized and qualified personnel.

Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com Electrical power supply For the electrical supply of R557R-2 unit, it is enough connecting the cable that comes out from the K373 safety thermostat (to which the circulator is connected) to the network 230 V, 50 Hz. The internal electrical part is precabled with the exception of thermo-electric actuators to be ordered separately, that have to be installed only at the end of the operations of charge and balancing of the hydraulic system. Regulation of the thermostatic three way valve THERMOSTATIC HEAD POSITION R462L F.C. 1 2 3 4 5 F.O. TEMPERATURE [°C] 20 25 34 45 56 67 70 Primary lockshield regulation HALF TURN OPENING (recommended calibration) Secondary lockshield regulation FULLY OPEN (recommended calibration) Manifolds regulation In order to made the regulation proceed with the complete opening of the lockshields mechanical memory by using the screw driver part of the R558 key; by using then the hexagonal part of the same key, proceed with the opening of the lockshield up to the achievement of the desired flow rate. Then close the mechanical memory, by using the screw driver part of the R558 key. Filling and pressurising the radiant floor system As for all manifolds for radiant panel systems, before casting the screed to cover the pipes you must fill and pressurise the system (as envisaged by Standard UNI-EN1264-4). To fill the system correctly, proceed as follows:

• Close the shut-off ball valves (Components - Ref.8) positioned upstream and downstream the circulator.
• Close the secondary lockshield (Components - Ref.6) with an appropriate 8 mm Allen key, so as to isolate the secondary circuit from the primary.
• Close all the lockshields on the delivery manifold using the R558 key (5 mm hexagon).
• Completely unscrew the mechanical memory of the lockshields using the screwdriver part of the R558 key.
• Close all the valves on the return manifold using the appropriate manual handwheels.
• Connect a normal rubber pipe to the drain cock (Components - Ref.11) on the intermediate fitting of the return manifold.
• Connect a normal rubber pipe to the drain cock (Components - Ref.11) on the intermediate fitting of the delivery manifold, for filling purpose.
• Fill the first circuit by opening the relative lockshield (on the delivery manifold) and valve (on the return manifold).
• When you are sure no more air/water mix is emerging from the drain pipe, close the circuit uning the respective valve and lockshield and then open the next circuit. This operation must be carried out methodically until the circuits are fully drained.
• Now open the shut-off valves (Components - Ref.8) of the circulator and the lockshield (Components - Ref.6), to fill the manifolds and allow all the air to be vented from them via the air vent valves (Components - Ref.9).
• Then is possible to re-open all the delivery and return valves and pressurise the system at the values envisaged by Standard UNI EN 1264-4, using for example a manual pump.
• The low temperature circuits must only be balanced at system start up, respecting the indications given in the project documentation.  Regulation

Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com  Circulator features Variable differential pressure Δp-v (I, II, III) Recommended for two-pipe heating systems with radiators to reduce the flow noise at thermostatic valves. The pump reduces the delivery head to half in the case of decreasing volume flow in the pipe network. Electrical energy saving by adjusting the delivery head to the volume flow requirement and lower flow rates. There are three pre-defined pump curves (I, II, III) to choose from. ∆p-v (variabile) Q [m3/h] Q [m3/h] P1 [W] H [m] H [kPa] III II I ∆p-v max. max. III II I ∆p-c (costante) Q [m3/h] Q [m3/h] P1 [W] H [m] H [kPa] III II I ∆p-c max. max. III II I Velocità costante (I, II, III) Q [m3/h] Q [m3/h] P1 [W] H [m] H [kPa] III II I III II I Constant differential pressure Δp-c (I, II, III) [RECOMMENDED] ∆p-v (variabile) Q [m3/h] Q [m3/h] P1 [W] H [m] H [kPa] III II I ∆p-v max. max. III II I ∆p-c (costante) Q [m3/h] Q [m3/h] P1 [W] H [m] H [kPa] III II I ∆p-c max. max. III II I Velocità costante (I, II, III) Q [m3/h] Q [m3/h] P1 [W] H [m] H [kPa] III II I III II I Setting the control mode The LED selection of control modes and corresponding pump curves takes place in clockwise succession.

• Press the operating button briefly (approx. 1 second).  LEDs display the set control mode and pump curve. Air venting
• Fill and vent the system correctly. If the pump does not vent automatically:
• Activate the pump venting function via the operating button: press and hold for 3 seconds, then release.  The pump venting function is initiated and lasts 10 minutes.  The top and bottom LED rows flash in turn at 1 second intervals.
• To cancel, press and hold the operating button for 3 seconds. After venting, the LED display shows the previously set values of the pump.

Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com Constant speed (I, II, III) [FACTORY SETTING] Recommended for systems with fixed system resistance requiring a constant volume flow. The pump runs in three prescribed fixed speed stages (I, II, III). ∆p-v (variabile) Q [m3/h] Q [m3/h] P1 [W] H [m] H [kPa] III II I ∆p-v max. max. III II I ∆p-c (costante) Q [m3/h] Q [m3/h] P1 [W] H [m] H [kPa] III II I ∆p-c max. max. III II I Velocità costante (I, II, III) Q [m3/h] Q [m3/h] P1 [W] H [m] H [kPa] III II I III II I Fault signals

• The fault signal LED indicates a fault.
• The pump switches off (depending on the fault) and attempts a cyclical restart. LED Faults Causes Remedy Lights up red Blocking Rotor blocked Activate manual restart or acontact customer service Contacting/winding Winding defective Flashing red Under/overvoltage Power supply too low/high on mains side Check mains voltage and operating conditions, and request customer service Excessive module temperature Module interior too warm Short-circuit Motor current too high Flashes red/ green Generator operation Water is flowing through the pump hydraulics, but there is no mains voltage at the pump Check the mains voltage, water quantity/pressure and the ambient conditions Dry run Air in the pump Overload Sluggish motor, pump is operated outside of its specifications (e.g. high module temperature). The speed is lower than during normal operation

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 CODE Nr. OF OUTLETS G x B C [mm] D [mm] I [mm] L [mm] M [mm] N [mm] O [mm] P [mm] Q [mm] R [mm] S [mm] T [mm] U [mm] V [mm] R557RY024 4, low temperature G 1”M x B.18 202 271 50 910 850 640 570 115÷150 605 - - - - - R557RY025 5, low temperature G 1”M x B.18 202 271 50 910 850 640 570 115÷150 605 - - - - - R557RY026 6, low temperature G 1”M x B.18 202 271 50 1060 1000 640 570 115÷150 605 - - - - - R557RY027 7, low temperature G 1”M x B.18 202 271 50 1060 1000 640 570 115÷150 605 - - - - - R557RY028 8, low temperature G 1”M x B.18 202 271 50 1060 1000 640 570 115÷150 605 - - - - - R557RY029 9, low temperature G 1”M x B.18 202 271 50 1260 1200 640 570 115÷150 605 - - - - - R557RY030 10, low temperature G 1”M x B.18 202 271 50 1260 1200 640 570 115÷150 605 - - - - - R557RY031 11, low temperature G 1”M x B.18 202 271 50 1260 1200 640 570 115÷150 605 - - - - - R557RY032 12, low temperature G 1”M x B.18 202 271 50 1260 1200 640 570 115÷150 605 - - - - - R553AY002 2, high temperature G 1”F x B.18 - - - - - - - - - 98 197 262 - - R553AY003 3, high temperature G 1”F x B.18 - - - - - - - - - 148 247 262 - -  DimensionsO Q N M L P BI BI D C G G R S T G G B R557R-2 + kit R553A U V G G R557R-2 + kit GE550 R557R-2 Preassembled manifold for heating systems, made of brass, with fixed point regulation. Connections 1”. Outlets connections: base manifold with frontal lockshield with mechanical memory and flow meters scale 0,5÷5 l/min; return manifold with shut-off valves with manual handwheel, suitable for thermo-electric actuators installation; EPDM gaskets; safety thermostat; drain cocks; thermometers; manual air vent valves; self-modulating circulator complying with Directive ErP 2009/125/EC; flush-mounting metallic cabinet with adjustable depth (850÷1200)x605x115÷150 mm (LxHxD) with painted frame and door. Mixing obtained by means of a three-way valve with thermostatic head with temperature range 20÷70 °C. To be completed with R553A high temperature water kit (for two or three zones) or with GE550 metering kit with GE552 thermal energy meter and K270 actuator.  Product specifications  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.  NOTE. The minimum depth of the metal cabinet is 110 mm, however the pre-assembled manifold requires at least 115 mm of depth. In case of installation with insulation, the minimum depth is 125 mm.