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Forced Circulation Tanks

Available in various sizes, the Forced circulation tanks with one, two or without heat exchanger serve numerous applications. They are mostly encountered in cases of many collectors, where large quantities of hot water are required. Moreover, such systems in smaller capacities often replace solar water heaters mainly for technical or aesthetic reasons.





  • Outer casing of PVC artificial leather & ABS caps of high resistance
  • Water storage tank of cold rolled steel with double inner enamel coating (GLASS) (160lt up to 2000lt)
  • Thermal insulation ensures minimum heat losses, maintaining the hot water temperature
  • Thermal insulation of expanded ecological polyurethane for the types with capacity up to 500lt
  • 100mm thick soft polyurethane for the types with capacity ranging from 800lt to 2000lt
  • Available as buffer tanks (without heat exchanger)
  • A heating element can be used as an optional back-up source
NOBEL FC0 - Without heat exchanger
MODEL   200 300 400 500 800 1000 1500 2000
TOTAL CAPACITY (EN 12897) lt 200 300 400 500 800 1000 1500 2000
NET WEIGHT kg 45 66 117 125 175 211 338 388
INSULATION mm 50 50 50 50 100 100 100 100
MAXIMUM WORKING TEMPERATURE °C 95 95 95 95 95 95 95 95
MAXIMUM PRESSURE OF WATER TANK MPa 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8
NOBEL FC1 - With 1 heat exchanger
MODEL   160 200 300 400 500 800 1000 1500 2000
TOTAL CAPACITY (EN 12897) lt 160 200 300 400 500 800 988 1500 1950
NET WEIGHT kg 54 65 92 137 145 221 233 382 454
INSULATION mm 50 50 50 50 50 100 100 100 100
HEAT EXCHANGER SURFACE (S1 - LOWER HE) 0.96 0.96 1.45 1.65 2.25 2.89 3.45 3.47 4.5
HEAT EXCHANGER CAPACITY (S1) lt 5.8 5.8 8.8 10 13.7 26.2 31.3 31.4 41.6
EXCHANGED POWER OF HE S1 IN CONTINUOUS MODE                    
70-90°C kW 39 39 52 61 86 148 175 175 250
60-80°C 31 31 39 47 64 107 130 140 195
50-70°C 17 17 29 33 41 70 85 100 130
50-60°C 9 9 24 17 20 50 56 80 68
MAXIMUM FLOW RATE OF DHW (ΔT 35°C) (S1) IN CONTINUOUS MODE
                   
70-90°C lt/min 28 28 37 44 62 61 72 72 102
60-80°C 22 22 28 34 46 44 53 57 80
50-70°C 12 12 21 24 28 29 35 41 53
50-60°C 13 13 34 25 27 20 23 33 2
QUANTITY OF HOT WATER MIX 45°C (S1) lt 190 240 330 412 553 845 1081 1728 2145
HEAT LOSS (ΔT 45K) kW/24h 1.6 1.7 2.1 2.8 3.1 5.1 5.3 6.5 8.3
MAXIMUM WORKING TEMPERATURE °C 95 95 95 95 95 95 95 95 95
MAXIMUM WORKING TEMPERATURE COIL HE °C 110 110 110 110 110 110 110 110 110
MAXIMUM PRESSURE OF WATER TANK MPa 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8
MAXIMUM PRESSURE OF COIL HEAT EXCHANGER MPa 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6
NOBEL FC2 - With 2 heat exchangers
MODEL   200 300 400 500 800 1000 1500 2000
TOTAL CAPACITY (EN 12897) lt 200 300 400 500 800 977 1500 1928
NET WEIGHT kg 70 100 146 158 252 279 421 501
INSULATION mm 50 50 50 50 100 100 100 100
HEAT EXCHANGER SURFACE (S1 - LOWER HE) 0.75 1.21 1.65 2.25 2.89 3.45 3.47 4.5
HEAT EXCHANGER SURFACE (S2 - UPPER HE) 0.54 0.85 0.76 1.04 1.54 1.31 2.3 2.7
HEAT EXCHANGER CAPACITY (S1) lt 4.6 7.4 10 13.7 26.2 31.3 31.4 41.6
HEAT EXCHANGER CAPACITY (S2) lt 3.3 5.2 4.6 6.4 9.4 7.9 20.5 25.2
EXCHANGED POWER OF HE S1 IN CONTINUOUS MODE                  
70-90°C kW 29 45 61 86 148 175 175 250
60-80°C 22 33 47 64 107 130 140 195
50-70°C 14 25 33 41 70 85 100 130
50-60°C 7 20 17 20 50 56 80 68
EXCHANGED POWER OF HE S2 IN CONTINUOUS MODE                  
70-90°C kW 19 32 30 39 87 72 120 117
60-80°C 13 24 21 27 57 50 95 83
50-70°C 9 15 12 17 36 30 68 51
50-60°C 5 9 4 6 20 17 51 24
MAXIMUM FLOW RATE OF DHW (ΔT 35°C) (S1) IN CONTINUOUS MODE                  
70-90°C lt/min 21 33 44 62 61 72 72 102
60-80°C 16 24 34 46 44 53 57 80
50-70°C 10 18 24 28 29 35 41 53
50-60°C 11 28 25 27 20 23 33 26
MAXIMUM FLOW RATE OF DHW (ΔT 35°C) (S2) IN CONTINUOUS MODE  
70-90°C lt/min 14 21 21 29 36 29 49 46
60-80°C 9 17 15 19 23 20 39 34
50-70°C 7 11 9 12 15 12 28 21
50-60°C 8 13 6 10 8 7 21 10
QUANTITY OF HOT WATER MIX 45°C (S1) lt 225 302 405 510 823 1055 1660 2080
QUANTITY OF HOT WATER MIX 45°C (S2) lt 111 151 200 250 401 503 611 991
HEAT LOSS (ΔT 45K) kW/24h 1.7 2.1 2.8 3.1 5.1 5.3 6.5 8.3
MAXIMUM WORKING TEMPERATURE °C 95 95 95 95 95 95 95 95
MAXIMUM WORKING TEMPERATURE COIL HE °C 110 110 110 110 110 110 110 110
MAXIMUM PRESSURE OF WATER TANK MPa 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8
MAXIMUM PRESSURE OF COIL HEAT EXCHANGER MPa 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6
TYPE HT D Ext. TYPE HT D Ext.
FC1 160
FC2 160
101
101
60
60
FC0 800
FC1 800
FC2 800
194
194
194
99
99
99
FC0 200
FC1 200
FC2 200
121
120
120
60
60
60
FC0 1000
FC1 1000
FC2 1000
200
200
200
105
105
105
FC0 300
FC1 300
FC2 300
143
142
142
65
65
65
FC0 1500
FC1 1500
FC2 1500
219
219
219
120
120
120
FC0 400
FC1 400
FC2 400
141
141
141
75
75
75
FC0 2000
FC1 2000
FC2 2000
240
240
240
130
130
130
FC0 500
FC1 500
FC2 500
170
167
167
75
75
75
     
Dimensions in cm
AVAILABLE MODELS
TYPE HEAT EXCHANGERS
WITHOUT WITH 1 WITH 2
160lt Yes Yes Yes
200lt Yes Yes Yes
300lt Yes Yes Yes
400lt Yes Yes Yes
500lt Yes Yes Yes
800lt Yes Yes Yes
1000lt Yes Yes Yes
1500lt Yes Yes Yes
2000lt Yes Yes Yes