Danfoss EvoFlat WSS Fact sheet
Fact sheet
TM
EvoFlat
WSS
with DHW recirculation, fully insulated
Fully insulated water heater for flats, single- and multi-family houses
FEATURES AND BENEFITS
• DHW heating based on flow principle with
thermostatic temperature controller
• Innovative, energy-saving controller
TCP - M in combination with high
performance heat exchanger for ondemand water heating
• Minimum space required for installation
• Built-in or wall-mounted variant
• Pipes and plate heat exchanger made of
stainless steel
• No retightening of internal connections
required, due to newly designed click
connection,
• Constant DHW temperature even at
fluctuating flow temperatures or
differential pressures
• Minimized risk of lime scale and bacteria
formation
Application
The EvoFlatTM WSS water heater is
a compact and simple to operate
water heater. Developped for DHW
heating in systems, which are supplied
from a secondary connected district
heating system, a block heating system, a centrally located boiler system
(oil, gas or biomass, as well as for CHP
systems. A flow temperature of min.
55 °C is required. The heating side is
not supported with this system. The
EvoFlat
TM
water heater is available as
built-in variant with a recess box or as
mount-on-wall variant with cover.
Domestic hot water (DHW)
The domestic hot water is prepared
in the heat exchanger based on the
flow principle and the temperature is
regulated by the self-acting controller with integrated differential pressure controller - the TPC-M. Supreme
ease of operation is obtained via the
combined hydraulic and thermostatic
regulation of the TPC-M controller. The
flow-controlled part allows primary
and secondary side flow through
the heat exchanger, only when hot
water is tapped. The thermostatic
part controls the domestic hot water
temperature. The TPC - M controller
with integrated differential pressure controller also compensates for
flunctuating flow temperatures and
differential pressures and thereby ensures a constant domestic hot water
temperature at all times. Immediately
after immediately after completion
of the tapping process the flow is
blocked. For registration of the cold
water consumption the EvoFlat
TM
WSS water heater is equipped with
a fitting piece for mounting of a cold
water meter in the DCW inlet. The
EvoFlatTM WSS water heater is also
prefabricated with a strainer, a sensor
pocket as well as a fitting piece for
mounting of a heat meter.
Domestic hot water recirculation
In order to ensure the best possible
DHW comfort and to have DHW
available immediately, this station
includes hot water circulation. This
includes i.a. a circulation pump and
a safety valve.
Construction
All pipes are made of stainless steel.
The connections are made by a newly designed click connection.
Compared to conventional stations
with screw connections, this new
connection technology does not require retightening during assembly.
Insulation
The EvoFlatTM WSS water heater is
built up on an EPP insulated back
plate as well as a front insulation
cabinet, enabling the customer to
have a fully insulated substation,
thus ensuring reduced heat losses
and excellent operating economy.
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CIRCUIT DIAGRAM (EXAMPLE)
DHW
DCW
Outlet
DCW
Inlet
DH
Supply
DH
Return
2 Plate heat exchanger: Danfoss XB06H -1
5 Strainer
6 Non-return valve
9 Circulation pump
Yonos Para Z 15/7
12 Safety valve
23 Sensor pocket M10x1
24 Fitting piece for heat meter WMZ: 3/4” × 110 mm
33 Plug
38 DHW controller type TPC-M
40 Summer-Bypass
59 Fitting piece for DCW meter: 3/4” × 110 mm
Design specifications:
Nominal pressure: PN 10
Max. supply temperature: 95 °C
DCW static pressure: P
Brazing material (HEX): Copper / Stainless steel
= 1,5 bar
min
Weight excl. cover: 8,5 kg
Insulation: EPP λ 0,039
Electrical supply: 230 V AC
Dimensions (mm):
With connections: H 590 × W 550 × D 150*
* Depth incl. mounting plate
With DHW recirculation: H 889 × W 582 × D 150*
* Depth incl. mounting plate
Connections sizes:
G ¾“ IT (int. thread)
DHW: CAPACITY EXAMPLES 10/50°C
DHW
capacity
[[kW]
37 65/21 23 730 13.3
43 65/22 40 850 15.3
45 65/20 22 867 16.1
49 65/21 30 950 17.5
55 65/16 27 950 19.4
38 55/21 27 950 13.6
51 65/19 28 950 18.3
34 55/24 28 950 12.5
Unit typ e
HEX
XB06H-1 26 Cu/E (Type 1)
XB06H-1 40 Cu/E (Type 2)
XB06H+ 60 Cu (Type 3)
XB06H-1 56 E (Type 3)
* energy meter not incl.
588,4
889
Temperature primary
Supply/Return
[°C]
425
554,4
112 65 65 65 65 65 65 43
3 4
1 2
1 Kaltwasser (KW) Eintritt
2 Warmwassser (WW)
3 Kaltwasser (KW) Austritt
4 Fernwärme (FW) Vorlauf
5 Fernwärme (FW) Rücklauf
6 Heizung (HE) Vorlauf
7 Heizung (HE) Rücklauf
582
Pressure loss
Primary
[*kp a]
5 6
Connections:
1. Domestic cold water (DCW) inlet
2. Domestic hot water (DHW)
3. Domestic cold water (DCW) outlet
4. Heating (HE) supply
5. Heating (HE) return
6. Recirculation
Options:
• Mounting rail for wall mounted variant
• Recess box for built-in variant incl.
mounting rail
7
Flow rate
Primäry*
[l/h]
Tap load
[l/min.]
© Danfoss | DCS-SGDPT | 2021 .11
AM336948082453en-010101
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