21
INSTALLER Section (en)
7710400 (01-06/18)
20. TECHNICAL SPECIFICATIONS
Model: DUO-TEC COMPACT 1.24 GA 24 GA 28 GA
Cat.
II2H3P
Gas used - G20 - G31
Rated heat input for DHW circuit. kW - 24,7 28,9
Rated heat input for heating circuit. kW 24,7 20,6 24,7
Reduced heat input kW 3,5 3,5 3,9
Rated heat output for DHW circuit kW - 24,0 28,0
Rated heat power 80/60°C kW 24,0 20,0 24,0
Rated heat power 50/30 °C kW 26,1 21,8 26,1
Reduced heat output 80/60 °C kW 3,4 3,4 3,8
Reduced heat output 50/30 °C kW 3,7 3,7 4,1
Rated efciency 80/60 °C % 97,6 97,7 97,7
Rated efciency 50/30 °C % 105,7 105,8 105,8
Efciency 30% Pn % 107,6 107,6 107,6
Max. pressure of water in heating circuit bar 3
Min. pressure of water in heating circuit bar 0,5
Capacity of water in expansion vessel l 7
Minimum pressure of expansion vessel bar 0,8
Max. pressure of water in DHW circuit bar - 8,0 8,0
Min. dynamic pressure in DHW circuit bar - 0,15 0,15
Minimum ow of water in DHW circuit l/min - 2,0 2,0
Production of DHW with ∆T = 25 °C l/min - 13,8 16,1
Production of DHW with ∆T = 35 °C l/min - 9,8 11,5
Specic ow “D” (EN 13203-1) l/min - 11,5 13,4
Temperature range in heating circuit °C 25÷80
Temperature range in DHW circuit °C 35÷60
Fumes typology - C13 - C33 - C43 - C53 - C63 - C83 - B23
Coaxial ue duct diameter mm 60/100
Diameter of separate outlets mm 80/80
Max. mass ow rate of fumes kg/s 0,012 0,012 0,014
Min. mass ow rate of fumes kg/s 0,002 0,002 0,002
Max. temperature of fumes °C 80 80 80
Nox Class 5 (EN 15502-1) mg/kWh 17,3 16,1 19,3
Natural gas supply pressure 2H mbar 20
Propane gas supply pressure 3P mbar 37
Power supply voltage V 230
Power supply frequency Hz 50
Rated power supply W 102 102 114
Net weight kg 30 34 34
Dimensions (height/ width/ depth) mm 700/400/299
Protection-limit against humidity (EN 60529) - IPX5D
Noise level at 1 metre dB(A) < 45
CONSUMPTION AT HEAT INPUT Qmax and Qmin
Qmax (G20) - 2H m
3
/h 2,61 2,61 3,06
Qmin (G20) - 2H m
3
/h 0,37 0,37 0,41
Qmax (G31) - 3P kg/h 1,92 1,92 2,25
Qmin (G31) - 3P kg/h 0,27 0,27 0,30