Giacomini GE556-5 Datasheet / Operating Instructions
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Giacomini GE556-5 Datasheet / Operating Instructions

Compact modular heat interface unit
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GE556-5
Compact modular
Heat Interface Unit
HIUs GE556-5 are modular and compact heat interface units for metering of thermal energy consumptions in autonomous
heating and domestic hot water production (DHW) systems with centralized heat production (e.g. teleheating).
HIUs GE556-5 are modular as they enable to combine multiple components and create the HIU most suitable for one's
installation needs (control of high-temperature heating with or without balancing valves, control of domestic hot and/or cold
water, etc.).
EXAMPLES OF POSSIBLE LAYOUTS
Giacomini S.p.A.
Via per Alzo 39, 28017 San Maurizio d'Opaglio (NO) Italia
 consulenza.prodotti@giacomini.com
 +39 0322 923372 - giacomini.com
Datasheet/Instruction
0973EN  04/2021
047U58178
1

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Summary of Contents for Giacomini GE556-5

  • Page 1 (DHW) systems with centralized heat production (e.g. teleheating). HIUs GE556-5 are modular as they enable to combine multiple components and create the HIU most suitable for one’s installation needs (control of high-temperature heating with or without balancing valves, control of domestic hot and/or cold water, etc.).

  • Page 2: Main Features

    WARNING. The HIU 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). Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com...
  • Page 3 0, 1, 2, 3, as second to last figure is mandatory. Product codes with 5, as second to last figure are optional. Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com...

  • Page 4: Completion Codes

    - SM556Y30441: GE556Y503 + GE556Y516 + GE556Y522 + GE556Y531 + GE556Y544 + GE556Y552 + GE556Y561 (template and additional valve to be ordered separately) Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com...
  • Page 5 Domestic cold water inlet Domestic hot water outlet Primary inlet Primary outlet High-temperature heating delivery High-temperature heating return Domestic hot water recirculation Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com...

  • Page 6: Operation

    After flowing through the mechanical priority valve, the primary circuit hot water is channeled directly into the high-temperature heating 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...
  • Page 7 12 l/min up to 15 l/min up to 18 l/min Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com...
  • Page 8 For the correct  operation of the HIU, the differential pressure control valve can’t be set above 0,5 bar (factory setting) Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com...
  • Page 9 + 20 mm insulation GE556Y544 Secondary circuit, direct heating with presetting valve and optional installation of thermo-electric actuator • Weight: 1,2 kg Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com...
  • Page 10 Cut-out profile for installation of energy meter with non-splittable display Cut-out profile for installation of recirculation kit GE556Y564/GE556Y565 Cut-out profile for installation of system drain cocks GE556Y569 Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com...
  • Page 11 GE556Y561 is included. • Weight: 0,4 kg Kv of domestic cold water circuit Kv = 6,6 10000 1000 1000 10000 Q [l/h] Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com...
  • Page 12 • Power supply: 230 V • Electric absorption: 3÷4.5 W • Protection class: IP42 • Max. water hardness: 20 °dH Q [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...
  • Page 13 Setting range of thermostatic heads: 20÷70°C Kv = 0,62 10000 Differential pressure regulation range 5000 1000 1000 10000 Q [l/h] Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com...
  • Page 14 To install the drain cocks, remove the HIU fitting caps and screw on the self-sealing cocks using a 12 mm Allen wrench. • Weight: 0,5 kg Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com...
  • Page 15  NOTE. The metal cover can be installed only when template GE551Y087 is included. It cannot be installed on lowered template GE551Y088. Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com...

  • Page 16: Hydraulic Characteristics

    Primary circuit with thermostatic by-pass for DHW production Kv = 0,62 10000 Differential pressure regulation range 5000 1000 1000 10000 Q [l/h] Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com...
  • Page 17 1000 10000 Q [l/h] Presetting valve position (Fully Open) 0.14 0.26 0.29 0.34 0.38 0.44 0.54 0.60 0.70 (R402PTG 3/4”) Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com...

  • Page 18: Operational Data

    [° C] [l/h] [° C] [l/min] [l/h] [kW] [° C] [l/h] [° C] 22,5 22,5 24,5 23,5 20,5 21,5 25,5 Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com...
  • Page 19 High-temperature heating with kit GE556Y544 Nominal flow rate of high-temperature heating circuit: 480 l/h @ ΔT 10 °C (80-70 °C) for 5.5 kW Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com...

  • Page 20: Installation

    Before fitting the HIU on the wall, extend every single same time to align them. (B). adjustable tail piece up to its max. length (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...
  • Page 21 3/4”M connections of the template ball valves (max.torque HIU to the wall with the special screw anchors (F). 60 Nm) using a torque wrench (G). Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com...

  • Page 22: Electric Connections

    • Periodically check proper hydraulic operation (recommended every two years). • Periodically check the efficiency of electric and electronic components (recommended every two years). Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com...
  • Page 23 Domestic cold water inlet Domestic hot water outlet Primary inlet Primary outlet High-temperature heating delivery High-temperature heating return Domestic hot water recirculation Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia  consulenza.prodotti@giacomini.com  +39 0322 923372 - giacomini.com...

  • Page 24: Reference Standards

    Umwelt oder die illegale Entsorgung des Produkts ist strafbar.  Safety Warning. Installation, commissioning and periodical maintenance of the product  Additional information. For more information, go to giacomini.com or contact our technical must be carried out by qualified operators in compliance with national regulations and/or local assistance service.

This manual is also suitable for:

Ge556y503Ge556y504

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