R274-R274N-0576 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 R274N R274 6-way zone valves, R274 (with tail pieces) and R274N (without tail pieces), to manage the water supply to a single usage point from two different sources of thermal energy, or to easily manage 4-pipe systems (typically used in heating and cooling applications). A single valve, motorized with its actuator, can thus substitute four motorized two-way zone valves, easily resolving any complications with synchronization for the opening/closings of the two sources. The 6-way zone valves allow the system change-over from heating to cooling (stem positions from 0° to 90°) and also the simultaneous closing of the supply from both sources (stem position at 45°). Valves R274 and R274N are typically used in radiant ceiling systems, in particular for the service sector, where the change- over from heating to cooling can be easily managed, even when this is required during the same day, and can be carried out independently for each zone. USAGE POINT USAGE POINT Heating and cooling with 4 two-way zone valves USAGE POINT USAGE POINT Heating and cooling with 1 six -way zone valve  VIDEO Frame the QR code with your smartphone or tablet to view the video tutorial. 6-way zone valves R274, R274N Datasheet 0576EN  02/2024

Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com SERIES PRODUCT CODES VALVE CONNEC- TIONS VALVE CONNECTIONS WITH FLAT SEAT TAIL PIECES VALVE BODY MATERIAL OPTIONAL CALIBRATED WASHERS P21S ACTUATOR K274-2 INSULATION R274W FITTINGS R274 (with tail pieces) R274Y023 G 1”M G 1/2”M CW617N P21SY011 P21SY016 K274Y072 R274WY001 -R274Y024 G 1”M G 3/4”M CW617N P21SY011 P21SY018 K274Y072 R274WY001 R274Y025 G 1”M G 1”M CW617N P21SY011 P21SY018 K274Y072 R274WY001 R274N (witout tail pieces) R274Y033 G 1/2”M - CW617N P21SY001 P21SY006 K274Y072 R274WY002 RM179Y053 (1/2”F x 16x2) RM179Y056 (1/2”F x 20x2) P15FY013 (1/2”F x 1/2”F) R254PY102 (1/2”M x 1/2”F Nut) red R254PY112 (1/2”M x 1/2”F Nut) blueR274Y133 G 1/2”M - CW602N (DZR) P21SY001 P21SY006 K274Y072 R274WY002 R274Y045 G 1”M - CW617N P21SY011 P21SY018 K274Y072 R274WY001 RM179Y073 (1”F x 26x3) RM179Y074 (1”F x 32x3) RM252Y003 (1”F x RM16x2) RM252Y004 (1”F x RM20x2) R252Y023 (1”F x 1/2”M) R252Y025 (1”F x 18) P15Y015 (1”F x 1/2”M) P15Y016 (1”F x 3/4”M) P15Y017 (1”F x 1”M) P15FY004 (1”F x Rp 3/4”F) P15FY005 (1”F x Rp 1”F) R274Y145 G 1”M - CW602N (DZR) P21SY011 P21SY018 K274Y072 R274WY001  Versions and product codes  NOTE. The codes P15 and P15F are supplied in pairs of tail pieces

  • Possibility of using valve with flat seat tail pieces (R274 series) or without tail pieces (R274N series)
  • Possibility to install the P21S calibrated washers to obtain different Kv.
  • Wide range of tail pieces and fittings for a simple connection to the system.
  • Easy actuator installation, with minimal space needed
  • Actuator can be operated manually, which allows users to move the valve position even in the absence of electricity
  • Overpressure protection system
  • The valve can be secured to the supports using the threaded hole on the lower part of the valve: - no. 1 M6 hole for R274Y023, R274Y024, R275Y025, R274Y045, R274Y145 - no. 2 M4 holes for R274Y033, R274Y133  Main features

Actuator K274Y072 (optional)

  • Type of command: 2÷10 V
  • Opening time: 60 s
  • Maximum torque: 10 Nm
  • Electric absorption: 4,5 VA, 5 W
  • Insulation class: III
  • Protection degree: IP54
  • Room working temperature range: 0÷50 °C
  • Room working humidity: 5÷95 % with non-condensing R.H.
  • Electric cable length: 1 m (6 x 0,5 mm2)
  • Possibility of manual control with maneuvering knob 6-way valves R274 and R274N
  • Fluid working temperature range: 5÷90 °C
  • Rated pressure (PN): 16 bar
  • Maximum differential pressure: 2 bar
  • Maximum glycol percentage: 50 % (the percentage of glycol must be equal for both circuits - heating and cooling)
  • Leakage rate (according to EN12266-1): A, no leakage
  • Connection for actuator: F04 - ISO 5211 Materials
  • Valve body: brass CW617N or CW602N (DZR) depending on version
  • Gaskets: low-friction PTFE / EPDM
  • Connection for actuator: PA66-GF30  Technical data Calibrated washers P21S (optional) Calibrated washers with seeger ring, made of stainless steel. Losses of pressure Loss of pressure values for valves R274Y033 and R274Y133 inclusive of delivery and return, with or without calibrated washers. PRODUCT CODE TOTAL Kv (VALVE DELIVERY AND RETURN + WASHER) Valve + P21SY001 0,25 (washer hole Ø 2,7 mm) Valve + P21SY002 0,40 (washer hole Ø 3,5 mm) Valve + P21SY003 0,65 (washer hole Ø 4,5 mm) Valve + P21SY004 1,00 (washer hole Ø 6,0 mm) Valve + P21SY005 1,30 (washer hole Ø 7,0 mm) Valve + P21SY006 1,60 (washer hole Ø 8,0 mm) Valve without P21S 1,900,10,01 1,0 10,0 Q [m3/h] 0,01 0,10 1,00∆p [bar] 0,25Kv: 0,4 0,65 11,3 1,61,9 Loss of pressure values for valves R274Y045, R274Y145, R274Y023, R274Y024 and R274Y025 inclusive of delivery and return, with or without calibrated washers. PRODUCT CODE TOTAL Kv (VALVE DELIVERY AND RETURN + WASHER) Valve + P21SY011 0,25 (washer hole Ø 3 mm) Valve + P21SY012 0,40 (washer hole Ø 4 mm) Valve + P21SY013 0,65 (washer holea Ø 4,5 mm) Valve + P21SY014 1,00 (washer hole Ø 5,8 mm) Valve + P21SY015 1,30 (washer hole Ø 6,7 mm) Valve + P21SY016 1,60 (washer hole Ø 7,5 mm) Valve + P21SY017 2,50 (washer hole Ø 9,0 mm) Valve + P21SY018 3,45 (washer hole Ø 12,7 mm) R274Y023 without P21S 3,45 R274Y024 without P21S 4,00 R274Y025/045/145 without P21S 4,25  WARNING. The valve is suitable for installation in indoor rooms and boiler rooms, and use with non-aggressive fluids (water, glycol-based water complying with VDI 2035/ÖNORM 5195). 0,10,01 1,0 10,0 Q [m3/h] 0,01 0,10 1,00∆p [bar] 0,25Kv: 0,4 0,65 11,3 1,6 2,5 3,45 4,0 4,25 3,45

Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com  Valve opening diagram REFERENCE IN THE GRAPHIC STEM ANGLE OPENING PERCENTAGE ACTION A 0°÷15° 100 % SOURCE 2 CLOSED SOURCE 1 OPENED USAGE POINT SOURCE 2 OPENED SOURCE 1 CLOSED USAGE POINT SOURCE 2 CLOSED SOURCE 1 CLOSED USAGE POINT B’ 40°÷50° 0 % SOURCE 2 CLOSED SOURCE 1 OPENED USAGE POINT SOURCE 2 OPENED SOURCE 1 CLOSED USAGE POINT SOURCE 2 CLOSED SOURCE 1 CLOSED USAGE POINT B’’ 30°÷60° 0 % B 75°÷90° 100 % SOURCE 2 CLOSED SOURCE 1 OPENED USAGE POINT SOURCE 2 OPENED SOURCE 1 CLOSED USAGE POINT SOURCE 2 CLOSED SOURCE 1 CLOSED USAGE POINT STEM POSITION Source 1 opened Source 2 openedOFF / closed Stem angle Opening [%] 100 A B’ C Overpressure protection system R274Y045, R274Y145, R274Y023, R274Y024, R274Y025 (1”) STEM POSITION Source 1 opened Source 2 openedOFF / closed Stem angle Opening [%] 100 A B’’ C Overpressure protection system R274Y033, R274Y133 (1/2”)

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 Valve body

2 M4 or M6 (depending on codes) holes for valve fixing

3 F04 - ISO 5211 connection for actuator installation

4 Command stem

5 Calibrated washers with seeger ring

 Overpressure protection system When using the 6-way valve for combined heating/cooling applications (radiant ceilings, fan-coil), the fluid inside the user circuit may become completely isolated when the valve is in the closed position (no heating or cooling). The pressure of the trapped fluid inside the user circuit may then increase or decrease due to changes in temperature of the fluid caused by the room temperature. The 6-way valve is equipped with integrated protection against overpressure, and is designed to compensate for such pressure variations. The upper ball of the valve has a small hole in its interior (ref. A) which maintains the connection of the “usage point” with the “source 1”, even when the valve is closed (stem position 45°). The combined action of the two balls (upper and lower) prevents the circulation of fluid when the valve is in the closed position. The overpressure protection system does not compromise hydraulic separation between the two circuits (source 1 and source 2): the two hydraulic circuits remain separate. Usage point Expansion vessel Expansion vessel Source 2Source 1 Usage point Expansion vessel Expansion vessel Source 2Source 1 A

Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com  Installation  WARNING. The valve can be installed in any position but it’s important that the actuator is not in an upside-down position or with the power supply cable coming in from above (to avoid possible problems due to possible condensation).  NOTE. The two calibrated washers are used to balance the flow rate in the two circuits (from source 1 to user; from source 2 to user). The two circuits may require different Kv values, so they can be used with two different models of calibrated washer (see table of calibrated washers on page 2). Calibrated washers can be installed either on the delivery or on the return. To install the washer it is necessary to manually insert the washer inside the valve fitting and then lock it by inserting the Seeger ring (supplied with the washer) using a tweezers. P21S calibrated washers installation Calibrated washers for R274 and R274N of 1”: R274Y045, R274Y145, R274Y023, R274Y024, R274Y025 Calibrated washers for R274N of 1/2”: R274Y033, R274Y133  Maintenance Once installed, the valve requires no maintenance. It is however recommended to periodically check the correct operation of the actuator and check that there are no hydraulic leaks. Seeger ring Gasket Tail piece Calibrated washer Seeger ring Calibrated washer

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 R274 (valves with flat seat tail pieces) PRODUCT CODE A B [mm] C [mm] D [mm] E [mm] F [mm] G [mm] H [mm] I L [mm] M [mm] N [mm] R274Y023 G 1/2”M 97 147 60 131 18 90 100 1 hole M6 90 108 59 R274Y024 G 3/4”M 96 145 60 131 18 90 100 1 hole M6 90 108 59 R274Y025 G 1”M 104 161 60 131 18 90 107 1 hole M6 90 108 59 N M L B H C I D A E G A AA AA B C I D A E F A AA AA PRODUCT CODE A B [mm] C [mm] D [mm] E [mm] F [mm] G [mm] H [mm] I L [mm] M [mm] N [mm] R274Y033 G 1/2”M 51 68 45 100 18 90 59 2 holes M4 90 108 59 R274Y133 G 1/2”M 51 68 45 100 18 90 59 2 holes M4 90 108 59 R274Y045 G 1”M 67 87 60 131 18 90 70 1 hole M6 90 108 59 R274Y145 G 1”M 67 87 60 131 18 90 70 1 hole M6 90 108 59 R274N (valves without tail pieces) I B A A C D E G A A A A H I C B D E F A A A A A A N M L

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 R274 6-way zone valve, ideal for managing the water supply to a single usage point from two different sources of thermal energy. Body in brass CW617N. Gaskets in PTFE. Male threaded connections ISO 228 with flat seat tail pieces. Calibrated washers can be installed for controlling losses of pressure. Fluid working temperature range: 5÷90 °C. Rated pressure: 16 bar. Maximum glycol percentage: 50 %. R274N 6-way zone valve, ideal for managing the water supply to a single usage point from two different sources of thermal energy. Body in brass CW617N or CW602N (DZR) depending on versions. Gaskets in PTFE. Male threaded connections ISO 228 with optional fittings installation. Calibrated washers can be installed for controlling losses of pressure. Fluid working temperature range: 5÷90 °C. Rated pressure: 16 bar. Maximum glycol percentage: 50 %.  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.  UNIT OF MEASUREMENT. 1 bar = 100 kPa 1 m3/h = 1000 l/h = 16,7 l/min = 0,28 l/s