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INFORMATION REQUIRED FOR INSTALLATION INSTRUCTIONS FOR THE HYDRAULIC CONNECTION OF BOILERS WITH AN OUTPUT EQUAL TO OR GREATER THAN 116 KW Operating in cascade After stopping the burner: - time delay required before the order to close a gate valve: 3 min. - order to stop the shunt pump (located between the boiler and the gate valves) using the limit switch contact on the gate valve. Operation in 2 stages with an oil or gas burner – boiler temperature maintained at 50°C or higher; the first stage must be set to a minimum of 30% of the nominal output. - operating at modulated low temperature; the first stage must be set to a minimum of 50% of the nominal output. Operating with a modulating gas burner – boiler temperature maintained at 50°C or higher; the burner can modulate down to 30% of the nominal output. – operating at low modulated temperature; the burner can modulate down to 50% of the nominal output. Water flow rate in the boiler When the burner is operating, the water flow rate in the boiler must be between 1/3 of the nominal flow rate and 3 times the nominal flow rate. Nominal flow Qn = 0,86 Pn 15 Minimum flow Qmin = Qn = 0,86 Pn 3 45 Maximum flow Qmax = 3 x Qn = 0,86 Pn 5 Qn in m 3 /h Pn Nominal output (maximum boiler output) in kW INSTALLATION DIAGRAMS The examples presented below cannot cover the full range of installation scenarios which may be encountered. Their purpose is to draw the attention to the basic rules to be followed. A certain number of control and safety devices are represented but, in the last resort, it is up to the experts, consultant engineers and design departments to make the final decision on the control and safety devices to be used in the boiler room, depending on its specificities. In all events, it is necessary to abide by the codes of practice and the prevailing local and national regulations. NB: For the connection of domestic hot water, a sleeve made of steel, cast iron or any other insulating material must be interposed between the hot water outlet and these pipes to prevent any corrosion to the connections, if the distribution pipes are made of copper. * mandatory, in compliance with safety directives: we recommend hydraulic safety units with membranes. 18
6A 0 30 l 6A 0 30 l 6A 0 l 6A 2 4 3 1 5 6 7 8 6 5 4 4 5 6 5 7 3 6 0 4 7 8 30 2 l 88 1 8 3 9 3 7 8 9 °C °C °C °C °C °C TS N L °C °C TS N L INFORMATION REQUIRED FOR INSTALLATION Installation of a GT 330 B3 with 1 direct circuit + 1 domestic hot water circuit (Schematic valid by analogy for a GT 430 B3 or a GT 530 B3) 88 AD 212 21 51 230 V single phase 7 4 3 27 9 9 52 11 7 32 9 9 27 49 22 5 1 9 9 9 26 24 33 13 17 16 2 9 50 18 27 25 30 9 29 28 GT330_F0014 Installation of a GT 330 DIEMATIC-m3 with 3 circuits with mixing valve + 1 domestic hot water circuit, all behind a decoupling cylinder (Schematic valid by analogy for a GT 430 DIEMATIC-m3 or a GT 530 DIEMATIC-m3) Diematic-m3 AD199 FM48 FM48 AD 212 21 230 V single phase AD 218 49 7 3 4 5 1 9 123 7 (*) 8 9 44 65 23 27 9 52 11 10 4 9 44 65 23 27 9 52 11 10 4 9 44 65 23 27 9 52 11 10 4 9 9 7 32 9 9 27 13 2 17 36 39 27 27 27 26 27 24 33 25 30 9 29 28 16 9 13 50 18 GT330_F0015 See captions on page 20 19
Page 1 and 2: GT 330-GT 430-GT 530 CAST IRON FLOO
Page 3 and 4: DESCRIPTION Control panel designed
Page 5 and 6: 6A 0 30 l DESCRIPTION Control panel
Page 7 and 8: 6A 0 30 l DESCRIPTION Sensor tube f
Page 9 and 10: THE VARIOUS CONTROL PANELS STANDARD
Page 11 and 12: TS 3 4 2 THE VARIOUS CONTROL PANELS
Page 13 and 14: BOILER OPTIONS OPTIONS SPECIFIC TO
Page 15 and 16: 6A INFORMATION REQUIRED FOR INSTALL
Page 17: 6A 0 30 l 6A 0 30 l 6A 0 30 l 6A 0

the various control panels

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