Data sheet
ThermoDual®- FLS-COMBI
General description/ Application
Domestic hot water provision by instantaneous heater is an efficient and hygienic optimal solution. Hot water is not stored and will be produced only on request. Thus, low temperatures in drinking water can be reduced to a necessary minimum.
Habitats for bacteria,such as legionella are virtually nonexistent. If the conditions for connection of these systems are given (sufficiently high capacity on heating side to cover peak load) or buffer tanks is present, these systems can be used unrestricted. Significant advantages of the system are:
•no storage of drinking water
•efficient cooling of the primary media
•optimum use of energy
•independent choice of different energy sources
•at any time sufficiently high domestic hot water temperature, that fulfils all hygienic requirements
•low space requirement
•lime scale is largely avoided
Maximum operating |
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Primary |
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parameters |
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Maximum permissible supply temperature, primary |
90°C |
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Maximum permissible operating pressure, primary |
10 bar(g) |
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Rated pressure, primary |
PN10 |
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Secondary |
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Maximum permissible temperature, secondary |
90°C |
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Maximum permissible operating pressure, secondary |
10 bar(g) |
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Minimum required pressure (static), water supply |
1,0 bar(g) |
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Rated pressure, secondary |
PN10 |
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Mains power supply / maximum power consumption |
230V AC / 4,0 A |
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Materials |
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Pipes, fittings, flanges, valves (domestic side) |
1.4571, bronze or brass as per DIN EN 1982, |
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also considering DIN 50930-06 and UBA guidelines |
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ditto (heating side) |
P235GH-TC1, CuSn5Pb5Zn5-C (RG-5), ST37.0 |
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Heat exchanger |
1.4404 with Cu solder |
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Insulation |
Hardcover EPP λ=0.036 W/mK (100%ENEV) |
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Code numbers |
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Capacity |
Code no. |
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Pump control |
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[kW] |
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(PWM control signal) |
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70 |
004X1538 |
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130 |
004X1539 |
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175 |
004X1540 |
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245 |
004X1541 |
Note:
Version without own electronic controller and terminal block for devices on request.
© Danfoss | 2019.02 |
VD.LZ.H2.02 | 1 |
Data sheet |
ThermoDual®- FLS-COMBI |
Circuit diagram
Shut-off valve
Non-return valve
Check valve
F1: Flow sensor
HEL |
Heat exchanger |
HPU |
Heating pump |
CPU |
Circulation pump |
SFV |
Safety valve |
ECD |
Electronic domestic hot water controller (ECL310 / P318.10) |
1Domestic water (cold)
2Domestic hot water (hot network)
3Circulation (inlet)
4Heating supply
5Heating return
TC Sensors (general: direct , immersion, surface) “S2”: with designation as for controller
Technical data |
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Typ |
Capacity |
FRp |
Pump |
FRDW |
DW |
FRC |
C |
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(70->25°C) |
dpr |
(10->60°C) |
dp |
(55->60°C) |
dpr* |
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ThermoDual® |
[kW] |
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[m3/h] |
[kPa] |
[m3/h] |
[kPa] |
[m3/h] |
[kPa] |
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FLS-COMBI 70 |
70 |
1,34 |
55 |
1,2 |
15 |
1,0 |
20 |
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FLS-COMBI 130 |
130 |
2,5 |
35 |
2,23 |
25 |
1,5 |
35 |
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FLS-COMBI 175 |
175 |
3,35 |
25 |
3,0 |
24 |
2,0 |
25 |
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FLS-COMBI 245 |
245 |
4,47 |
55 |
4,20 |
38 |
2,0 .. 3,0 |
60 .. 32 |
FR: Flow rate p: primary dpr: Remaining pump head dp: Pressure loss DW: Domestic water C: Circulation * (maximal possible)
2 | © Danfoss | 2019.02 |
VD.LZ.H2.02 |