08EN April 0 0U8 GEY - Y - Y (GE- series) 900 000/ 00 00A/ 800 00L/ Versions and product codes Product code Type Heat exchanger nominal power GEY, - GEY and production GEY and production Table - Product codes, 9, 8 Jig with valves GEY08 GEY08 GEY08 GEY08 GEY08 GEY08 GEY Main features Painted (RAL900) steel cabinet, for external installation, with key lock. Double heat exchanger configuration in parallel (except GEY): priority on the production of domestic hot water with respect to the heating function. handling with controlled temperature Spacers for the meters. Expansion vessel, safety valve and high efficiency circulator (/), all comply with ErP Directive (009//CE). Motorised zone valve for heating. / connections. Dynamic balancing valve, R0A series. WRAS certified components for the domestic hot water circuit. Technical data Max. working temperature of the primary circuit and secondary circuits (heating and ): 90 C Max. working pressure of the primary circuit and secondary : bar. Maximum differential pressure for the primary side = bar (due to the priority valve) Maximum working pressure of the heating secondary circuit: bar (safety valve setting) Nominal primary flow: 0 l/h @ 80 C for, kw (GEY) 9 l/h @ 80 C for 9 kw (GEY) 90 l/h @ 80 C for 8 kw (GEY) Figure - GE- GEY - GEY Description GE series is composed of heat interface units for heating and (Domestic Hot Water) production; they are fed by means of hot water from centralised boiler plant (e.g. district heating). The present version uses a configuration of two heat exchangers in parallel (except GEY), this has two principal advantages: Parallel and non-intermittent handling of the domestic hot water and heating functions. Higher safety, the heating circuit is a sealed pressurised system should there be any leaks within property only a small amount of water will be discharged. The adopted configuration is an innovative variant with the use of thermostatic actuators, and an automatic balancing of the primary flow particularly practical and reliable, as can be seen from the following data.
Metering systems 08EN April 0 0U8 GEY - Y - Y (GE- series) 900 000/ 00 00A/ 800 00L/ Optional components Components On each satellites, it is possible to install the following optional components: Energy meter (M-Bus): product code GEY9 Respect the flow direction in figure. The flow temperature sensor of energy meter has to be installed into the appropriate housing (fig.-). Domestic hot water meter (M-Bus): product code GEY90 Respect the flow direction in figure. Insulation in expanded PEx: product code GEY80 Jig with valves and / connections: GEY08 & GEY08 (table and fig.) Jig with valves, filters and Ø mm connections: GEY08 & GEY08 (table and fig. & ) 8 8 9 0 F G C D GEY The installation should be undertaken by suitably qualified and authorised personnel only. Observe the EU norms and regulations concerning the use (installation, fixing, etc.), the operation, the recalibration and the replacement the meters. Please refer to the assembly instructions supplied with any meter. GEY08 JIG WITH VALVES GEY08 - JIG WITH VALVES (possibility of connections from above) GEY08 JIG WITH VALVES GEY08 - JIG WITH VALVES (possibility of connections from above) 8 0 8 9 0 9 GEY GEY A B C D E F G Legenda Automatic air vent Dynamic balancing valve Motorised heating way zone valve Spacer pipe for energy meter Temperature probe housing for energy meter Primary by-pass Lockshield valve for heating 8 Thermostatic head RL for temperature control of heating 9 Priority valve for domestic hot water function 0 Heat exchanger, domestic hot water function Flow switch TMV & TMV thermostatic mixing valve Spacer pipe for domestic hot water meter Check valve Heat exchanger, heating function Sensor of thermostatic head RL Automatic air vent 8 Automatic air vent 9 Expansion vessel 0 Ball valve for circulator maintenance High efficiency circulator Manometer Safety valve Electric box A: Cold water inlet B: Cold water outlet C: Primary outlet D: Primary inlet Figure components PRIMARY PRODUCTION Figure type of jigs JIGS COMPONENTS GEY08, GEY08 RISCALDAMENTO CONTROLLI E: Hot water outlet F: outlet G: inlet FLUIDO DALL ALTO. Metallic frame. Ball valve to isolate the unit.filter.dirt separator. Joint that allows the connection from above from below and. Ball valve to allow the inspection of the filter. System pipes, Ø mm FLUIDO DAL BASSO Figure - Jig components
08EN April 0 0U8 GEY - Y - Y (GE- series) 900 000/ 00 00A/ 800 00L/ Operation P : cold inlet (fig.-a), cold outlet (fig.-b), hot outlet (fig.-e). In place of the brass spacer (fig.-) a domestic hot water meter can be installed. A TMV+TMV thermostatic mixing valve regulates the temperature of (Domestic Hot Water). GEY E A C D F G P HEATING: inlet (fig.-g) and outlet (fig.-f). The circuit is simply composed of the heat exchanger and a circulator. As it deals with a closed circuit, the equipment is completed by: expansion vessel, safety valve, and manometer. A filling loop system (supplied) should be fitted on the cold water and heating flow pipe. PRIMARY: inlet (fig.-d) and return (fig.-c). The energy meter can be installed in place of the spacer (fig.-) by installing the inlet temperature probe in the appropriate housing (fig.-). For GEY, the primary circuit operates only for the heating circuit; the primary circuit is composed of a dynamic balancing valve, an automatic air vent, a heat exchanger and a thermostatic valve with remote sensor that regulates the power for the heating circuit. The zone valve can control the heating by means of a thermostat (not supplied). For GEY-, the primary circuit is divided into two sides: one is for the heating handling (similar to the one described above), the other is for the production of. If the flow switch is activated (by a request), the priority valve closes the heating side and gives power to the production side. 8 mm F B W E A A B E GEY - GEY Automatic air vent A: Cold water inlet B: Cold water outlet C: Primary outlet D: Primary inlet Figure Operating scheme C D F G Legend Heat exchanger Dynamic balancing valve F Flow switch Motorised way zone valve Manual air vent and discharge E Spacer for energy meter Manometer P Temperature probe housing for energy meter Primary by-pass Priority valve Pressure switch Ball valve for circulator maintenance Thermostatic head RL Check valve B W E: Hot water outlet F: outlet G: inlet TMV & TMV thermostatic mixing valve lockshield valve Spacer for domestic cold water meter Sensor of thermostatic head RL Expansion vessel High efficiency circulator Safety valve R0AY0 dynamic balancing valve (/ ) - p: 0-00 kpa l / sec l / h Setting 0. 0.0 0.9. 0. 9. 0. 0. 0. 9. 0.. 0.9. 0.. 0. 8.8 0. 99.9 0..0 0.8. 0.8. 0.90 8. 0.9 0. 0.0 8. 0.08 0. 0.. 0.0 9.8 0. 8.9 0. 8.0 0.8 8. 0. 89. 0.0 900. 0. 9. 0. 9. 0.8 9. 0. 98. 0.80 00.8 0.8 00.9 0.9 00.0 0.98 00. 0.0 090. 0.0 0. 0. 0. 0. 0. 0.8 80. 0. 00. 0.0 0.8 0. 0.9 0. 0.0 Table R0A regulation
08EN April 0 0U8 GEY - Y - Y (GE- series) 900 000/ 00 00A/ 800 00L/ Protection and safety systems Danger of burns and electric shocks. Access to the HIU should be by suitably qualified and authorised personnel only. Electrical connections On the top left of the HIU there is an electrical box IP (fig.-) containing a relay for the priority valve controlled by means of the flow switch and the control and supply of the circulator (fig.-0). It is important that the access to the HIU is made only by suitably qualified and authorised personnel: the cabinets are provided with key locking. THERMOSTAT request NC C NO from user EARTH 0 V live NEUTRAL Controls and maintenance circuit pressure Periodically inspect the pressure of the heating circuit by using the pressure gauge (fig.-): the pressure value must be maintained over bar (pressure values under bar can damage the circulator by cavitation). A pressure switch with 0,8 bar settings is provide to protect the circulator. stops if the pressure is below 0,8 bar due to the pressure switch device. Please, refill the system to restart the circulator. A filling loop is provided and must be fitted between the cold feed and heating flow (the HIU has no internal filling loop); during filling be aware that the safety valve will activate at bar (fig.-): Warning: danger of burns. In order to eliminate the air in the heating circuit, use the air vent (fig.- and fig.-). EARTH to satellite white HEATING CIRCULATOR PRESSURE SWITCH red 8 9 brown 8 9 0 0 HEATING -WAY ZONE VALVE ACTUATOR Figure a Electrical connections fo GEY satellite THERMOSTAT request NC C NO blue from user EARTH 0 V live NEUTRAL Safety valve Periodically operate the manual handwheel of the safety valve (fig.-). Be careful the discharge of water may be hot. Warning: danger of burns. PRESSURE SWITCH white red Adjustments Domestic hot water temperature Adjust the temperature of the domestic hot water using the thermostatic mixing valve (fig.-). Ensure that the valve is commissioned under normal system conditions. The valve must be commissioned to suit site conditions and the desired outlet temperature set by the installer. With normal supply conditions established and the hot and cold water supplies running, open the outlet and leave running. Remove the cap and release the locking nut from the temperature spindle. Using an 8 mm allen key rotate the temperature adjustment spindle anticlockwise to increase the mixed water temperature or clockwise to reduce the mixed water temperature - at all times ensuring the probe of the thermostat is under the flowing water. The use of a digital thermostat when setting the valve is recommended, once the desired outlet temperature is reached, re-fit the locking nut to the temperature spindle to prevent unauthorised adjustment of the valve and replace the cap on the valve body. Adjust the heating temperature using the thermostatic head (fig.-): Position Temperature [ C] Provide a safety thermostat for the low temperature heating applications. EARTH to satellite 8 9 brown HEATING CIRCULATOR 8 9 0 0 HEATING -WAY ZONE VALVE ACTUATOR blue FLOW SWITCH request Figure b Electrical connections fo GEY- satellites blue PRIORITY VALVE -way Technical data Supply voltage for circulator: 0 V / 0 Hz. Maximum electrical power for the HIU: W (for GEY) 9 W (for GEY, GEY) Electrical power for the circulator: W / 0,0 0, A. demand - thermostat connection The heating demand should be given via the normally open contact of the thermostat (N.O. contact, see fig.) to terminal n 8; the common contact of the thermostat has to be connected to connection n on the relay. For the connection of the thermostat use a -conductor cable with 0, mm section. No polarity need be complied with for the connections. M-Bus For the connection of the M-Bus data transmission cable to the concentrator refer to the thermal energy meters datasheet. brown blue brown black A A RELAY If you notice that the rating temperature of the heating is higher than the set value, the flow of the primary may be too high and the thermostatic head is not able to close. To balance the heating production functions, you can adjust the dynamic balancing valve (fig.-) but note that it also affects the production. Finally, it is possible to change the heating power by modifying the circulator using the red knob (fig.-0).
08EN April 0 0U8 GEY - Y - Y (GE- series) 900 000/ 00 00A/ 800 00L/ Small heat exchanger (GEY) Primary circuit,00 F.O. 0,0 0,0 0,,0 0,0 Q [m /h] Figure Primary circuit for domestic hot water production, dynamic balancing valve fully open - Radiators [m /h] Max,, Table Primary circuit data for radiator heating. - Radiant floor [m /h] Max, 0,0 temperature (radiators - C) 80 C C C 0 ( C) 90 (9 C) 0 ( C) temperature (radiators -8 C) 0 C C 0 C 80 (9 C) Table Primary circuit data for floor radiant heating. 0 (9 C) 0 (0 C) p [m H O] 0 0 00 00 00 800 000 00 Figure 8 flow rate diagram. Q [l/h]
08EN April 0 0U8 GEY - Y - Y (GE- series) 900 000/ 00 00A/ 800 00L/ Small heat exchanger (GEY) Primary circuit,00 F.O.,00 F.O. 0,0 0,0 0,0 0,,0 0,0 Q [m /h] Figure 9 Primary circuit for domestic hot water production, dynamic balancing valve fully open Lockshield valve n of turns 0,0 0,,0 0,0 Q [m /h] F.O. Kv 0, 0,9,, - Radiators [m /h] Max,, Table Primary circuit data for radiator heating. - Radiant floor [m /h] Max, 0,0 temperature (radiators - C) 80 C C C 0 ( C) 90 (9 C) 0 ( C) temperature (radiators -8 C) 0 C C 0 C 80 (9 C) Table Primary circuit data for floor radiant heating. 0 (9 C) 0 (0 C) Figure 0 Primary circuit for heating, lockshield valve and dynamic balancing valve fully open p [m H O] 0 0 00 00 00 800 000 00 Figure flow rate diagram. Q [l/h] Domestic hot water production temperature ( 0-0 C),00,8, l/min l/h kw 80 C C 0 C C 0 C 0 9 900 00 0 00 9 80 (,9 C) 0 (, C) 8 (, C) 9 (0, C) 80 ( C) (8, C) 90 (0, C) 0 (,9 C) 90 (,9 C) 9 (, C) 0 (, C) 0 (, C) Table Primary circuit data for domestic hot water production. 8 (, C) 00 (,8 C) 80 (, C) 0 ( C) 0,0 0,0 0,,0 Q [m /h] 0,0 Kv Description Ref. figure,8 Domestic hot water A-E, Domestic cold water A-B Figure Hydraulic data for hot and cold domestic water circuits.
08EN April 0 0U8 GEY - Y - Y (GE- series) 900 000/ 00 00A/ 800 00L/ Large heat exchanger for domestic water production (GEY) Primary circuit,00 F.O.,00 F.O. 0,0 0,0 0,0 0,,0 0,0 Q [m /h] Figure Primary circuit for domestic hot water production, dynamic balancing valve fully open. - Radiators [m /h] Max,, Table 8 Primary circuit data for radiator heating. - Radiant floor [m /h] Max, 0,0 temperature (radiators - C) 80 C C C 0 ( C) 90 (9 C) 0 ( C) temperature (radiators -8 C) 0 C C 0 C 80 (9 C) Table 9 Primary circuit data for floor radiant heating. 0 (9 C) 0 (0 C) Lockshield valve n of turns 0,0 0,,0 0,0 Q [m /h] F.O. Kv 0, 0,9,, Figure Primary circuit for heating, lockshield valve and dynamic balancing valve fully open p [m H O] 0 0 00 00 00 800 000 00 Figure flow rate diagram. Q [l/h] Domestic hot water production temperature ( 0-0 C),00,, l/min l/h kw 80 C C 0 C C 0 C 0 9 900 00 0 00 9 0 8 0 (, C) (,8 C) 0 (, C) 90 (8,9 C) 90 (0, C) 9 (,9 C) 0 (8, C) 0 (9, C) 890 (0, C) 00 (, C) (8, C) 0 (0, C) 80 (, C) 00 (, C) 80 (, C) Table 0 Primary circuit data for domestic hot water production. 0 (, C) 80 (, C) 00 (, C) 00 (, C) 8 (,9 C) 0 (, C) 00 (8, C) 0,0 0,0 0,,0 0,0 Q [m /h] Kv Description Ref. figure, Domestic hot water A-E, Domestic cold water A-B Figure Hydraulic data for hot and cold domestic water circuits.
08EN April 0 0U8 GEY - Y - Y (GE- series) 900 000/ 00 00A/ 800 00L/ Electronically controlled high-efficiency pump / (0 V) Pump operating Automatic constant pressure difference (recommended). H [m] p-costante Automatic variable pressure difference. green continuous green flashing Automatic air vent routine (0 min duration): the pump runs alternatively with high and low s to help air bubbles to collect and to go to the air vent in the installation. Normal running. LED - errors Automatic operation for air elimination. 0 0 0,,, Q [m /h] P [w] 0 0 0 0 m 0 0 0,,, Q [m /h] Figure - features m 0, m m m m max green/red flashing red flashing NO LED Abnormal situation (pump functional but stopped): ) Undervoltage or overvoltage ) Wrong temperature (fluid or room temperature) Pump stopped (permanent error: the pump need a manual reset). It can be necessary to change the pump. No power supply: ) Pump is not connected to power supply: check cable connection. ) LED is damaged: check if pump is running. ) Electronics are damaged: change pump. Dimensions Normative references UNI EN EN 0 EN 0 Measuring Instruments Directive 00//CE (MID) ErP Directive 00//CE 0 WRAS approvals Ref. fig. Components Certificate number - Gaskets 0 9, Heat exchanger 00 Thermostatic mixing valve 09008 0 0 0 9 80 Check valve 0900 Ref. fig. Components Certificate number A B C X E Y G Filter and gaskets 0 D F 80 Table WRAS approvals. 0 Legend A: Cold water inlet B: Cold water outlet C: Primary outlet D: Primary inlet Figure 8 Dimensions in mm E: Hot water outlet F: outlet G: inlet X: Hole for safety valve drain Y: Hole for electrical cables Additional information For additional information please check the website www.giacomini.com or contact the technical service: ' +9 0 9 +9 0 9 * consulenza.prodotti@giacomini.com This pamphlet is merely for information purposes. Giacomini S.p.A. retains the right to make modifications for technical or commercial reasons, without prior notice, to the items described in this pamphlet. The information described in this technical pamphlet does not exempt the user from following carefully the existing regulations and norms on good workmanship. Giacomini S.p.A. Via per Alzo, 9-80 San Maurizio d Opaglio (NO) Italy 8