Danfoss Akva Lux II Reno Eco Fact sheet
Fact Sheet
Akva Lux II Reno Eco flat station
For replacement of gas boilers in apartment buildings and multi-family houses. Direct heating and instantaneous domestic hot water.
Application
The Akva Lux II Reno Eco is a flat station for direct heating and a pressure and temperature
controlled instantaneous domestic hot water
heater for two-pipe systems, designed for decentralized heat distribution and is especially
suitable for apartment buildings, where existing gas boilers should be replaced. The existing
connections for DHW and DCW as well as supply and return of secondary heating circuits can
be used without major changes, but it is recommended that the connections for the primary
hot water flow and return are to lead through
the chimney. Optionally the cold water supply
can also be established in top of the unit.
District heating (DH)
The station is supplied with heating water from
a heating center or a buffer storage, and it is pre
fabricated with interconnecting components
such as differential pressure controller, strainer,
thermostatic bypass FJVR, sensor pockets and
fitting piece for insertion of a heat meter.
Heating (HE)
The differential pressure controller reduces the
high, fluctuating pressure in the district heating
network to a constant operating pressure that
maintains a constant pressure in the heating
circuit(s). The room temperature is adjusted solely using the radiator thermostats. To controll
the room temperature the station can be supplied with zone valve/thermal actuator TWA-A,
which enables connection to an electronic programmable room thermostat.
-
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 PTC2+P
self-acting controller with integrated differential
pressure controller. The pressure-controlled part
allows primary and secondary side flow through
the heat exchanger, only when hot water is
tapped and blocks the flow immediately after
completion of the tapping process.
The thermostatic part controls the domestic hot
water temperature. Thanks to the quick-acting
hydraulic control of the heat exchanger, it is large
ly protected from the formation of lime scale and
growth of bacteria. The integrated differential
pressure controller compensates for variations in
supply temperature and varying differential pres
sure and thereby ensures a constant domestic
hot water temperature at all times. A thermostat
ic bypass enables tapping of hot water without
any delay, – ensuring the best possible efficiency
and economy. For registration of the cold water
consumption the station is equipped with a fit
ting piece for mounting of a cold water meter in
the DCW inlet.
Bypass
The station is equipped with bypass function as
a standard.
Construction
All pipes are made of stainless steel. The connections are made by nuts and gaskets. The station
can be supplied with a white-lacquered steel
sheet cover for wall mounting.
FEATURES AND BENEFITS
FEATURES AND BENEFITS
• Flat station for exhange of existing gas
boilers
• Direct heating, DHW heating based on
flow principle
• With integrated fresh water system for
decentralized DHW heating
-
• Capacity: 15 DCW / 55 kW DHW
• Compact, space-saving design
-
• Also suitable for low-temperature
systems with 55 ° C supply flow
-
• Innovative, energy-saving controller
PTC2+P in combination with high performance heat exchanger for on-demand
-
water heating without no-load losses
• Pipes and plate heat exchanger
made of stainless steel
• Minimized risk of lime scale and bacteria
formation
• With pipe insulation
www.danfoss.com
SHALTPLAN - BEISPIEL
E
D
C
B
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87
CIRCUIT DIAGRAM - EXAMPLE
DHW
DCW
2 Plate heat exchanger DHW
4 Differential pressure controller
5 Strainer
23 Sensor pocket M10 (internal thread)
38 PTC2+P controller
46 RA-C DN 15 zone valve
59 Fitting piece for heat meter (¾” x 110 mm)
Supply
Primary
Return
Primary
Design specifications:
Nominal pressure (prim/sec.): PN 10/10
Max. supply temperature: 95 °C
Min. ΔP: See capacity examples
DCW static pressure: p
Brazing material (HEX): Copper
= 2 bar
min
Weight : 22 kg
incl. cover
Cover: White-lacquered steel
Dimensions (mm):
Without cover: H 809,5 × W 470 × T 146,9
Mit Verkleidung: H 1120 x W 480 x T 149
Connections sizes:
DH: G ¾“ (ET)
DCW, DHW, HE: G ¾“ (ET)
Dimensional sketch:
5 6 7
809,5
1 2 3 4
65
65
130
470
HE
Supply
HE
Return
Connections:
1. Heating (HE) supply (bottom)
2. Domestic hot water (DHW) (bottom)
3. Domestic cold water (DCW (bottom)
4
. Heating (HE) return (bottom)
5. District heating (DH) supply (top)
6. District heating (DH) return (top)
7. Option: Domestic cold water supply (top)
Type Code No.
Akva Lux II Reno Eco Type 1, w/ pipe insulation,
zone valve, Cover
Akva Lux II Reno Eco Type 2, w/ pipe insulation,
zone valve, Cover
Akva Lux II Reno Eco Type 3, w/ pipe insulation,
44
146,9
zone valve, Cover
Accessories Code No.
145B4054
145B4055
145B4056
Cover W 480 x D 150 x H 1120 mm 145H4282
Ball valve set for ECO 2 pcs. DVGW,
4 pcs. heating (76mmx3/4”ET/IT)
145H4015
Actuator TWA-A NC 230 V for zone valve 088H3112
Top connection DCW with fitting piece for
DCW meter 3/4” x 110 mm
144B2420
DHW: Capacity examples, 10 °C/50 °C
Typ e
XB 06H-1 26
XB 06H-1 40
DHW
Capacity
KW
35,0
45,0
45,0
55,0
Primary
Supply
[°C]
65 22
65 22
65 22
65 21
Secondary
Supply
[°C]
Pressure loss
*primary
[kPa]
Flow rate
primary
[l/h]
21 690 11, 5
36 900 12, 0
28 870 14,5
43 1080 18,0
Flow rate
secondary
[l/min]
DHW: Capacity examples, 10 °C/50 °C
XB06H+ 60
* w/o heat meter
32,3
41,0
Danfoss Redan A/S · District Heating · Omega 7, Søften · DK-8382 Hinnerup · Denmark
55 20
55 21
24 800 13,3
40 1030 17,2
Heating: Capacity examples
Heiting
Capacity
kW
10 20 430 41
10 30 287 28
10 40 215 30
15 20 645 71
Heating: Capacity examples
15 30 430 42
15 40 323 34
* w/o heat meter
Tel.: +45 87 43 89 43 · Fax: +45 87 43 89 44 · redan@danfoss.com · www.redan.danfoss.dk
© Danfoss | Produced by Danfoss Redan | 2017.02
Heating circuit
Δt
[° C]
Flow rate
primary
[l/h]
Pressure loss
*primary
[kPa]
VL.LZ.K1.02
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