Danfoss ThermoDual- FLS-COMBI Data sheet

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
		Primary
	parameters
		Maximum permissible supply temperature, primary	90°C
		Maximum permissible operating pressure, primary	10 bar(g)
		Rated pressure, primary	PN10
		Secondary
		Maximum permissible temperature, secondary	90°C
		Maximum permissible operating pressure, secondary	10 bar(g)
		Minimum required pressure (static), water supply	1,0 bar(g)
		Rated pressure, secondary	PN10
		Mains power supply / maximum power consumption	230V AC / 4,0 A
	Materials
		Pipes, fittings, flanges, valves (domestic side)	1.4571, bronze or brass as per DIN EN 1982,
			also considering DIN 50930-06 and UBA guidelines
		ditto (heating side)	P235GH-TC1, CuSn5Pb5Zn5-C (RG-5), ST37.0
		Heat exchanger	1.4404 with Cu solder
		Insulation	Hardcover EPP λ=0.036 W/mK (100%ENEV)

	Code numbers
		Capacity	Code no.
			Pump control
		[kW]
			(PWM control signal)
		70	004X1538
		130	004X1539
		175	004X1540
		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
		Typ	Capacity	FRp	Pump	FRDW	DW	FRC	C
				(70->25°C)	dpr	(10->60°C)	dp	(55->60°C)	dpr*
		ThermoDual®	[kW]
				[m3/h]	[kPa]	[m3/h]	[kPa]	[m3/h]	[kPa]
		FLS-COMBI 70	70	1,34	55	1,2	15	1,0	20
		FLS-COMBI 130	130	2,5	35	2,23	25	1,5	35
		FLS-COMBI 175	175	3,35	25	3,0	24	2,0	25
		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