Danfoss VX Solo II Fact sheet

MAKING MODERN LIVING POSSIBLE

VX Solo II

Substation for single-family, semi-detached and terraced houses
as well as ats

District heating substation for indirect heating. With connection pipes for
DHW cylinder. Designed for wall-mounting with pipes connection in top or
bottom

Application

The VX Solo II is a substation featuring
high performance and simple opera­tion. The VX Solo II is especially suitable
for two-pipe systems and systems
with floor heating.

District heating (DH)

The substation is prefabricated with
interconnecting components such as
fitting piece and sensor pockets for
insertion of a heat meter mounted in
the DH return pipe, as well as strainer,
ball valves and pockets for pressure
gauges.
As a standard the substation is sup­plied with fitting piece for mounting
of heat meter in the DH return pipe.

Heating (HE)

The heating side consists of a stainless
steel plate heat exchanger, manome­ter, thermometers, expansion ves­sel and circulation pump(s) and the
heating temperature is controlled by
an self-acting thermostatic valve or
an electronic temperature controller
with an outdoor temperature sensor,
in combination with an actuator.
Depending on substation’s application,
different heat exchangers dimensio­ned for central or floor heating can be
used. As an option the substation can
be equipped with a thermostat with
safety monitor.

Domestic hot water (DHW)

The substation can be supplied with
connection pipes for DHW cylinder on
the supply or return line.

Construction

All pipes are made of stainless steel.
The connections are made by nuts and
gaskets. The substation offers variable
connection possibilities, as connec­tion of pipes can be established both
in the top or in the bottom of the sub­station. The VX Solo II can be delivered
with white-lacquered steel cover, with
door.

Variants

VX Solo II is available in various vari­ants. The circuit diagram and the tech­nical data on the back page illustrates
VX Solo II HWS with 1 heating circuit
and secondary connection for DHW
cylinder, however, variants with 2
heating circuits, mixing loop and pri­mary connection for cylinder are also
available.

Enclosed application sheet illustrates
the available variants.

FEATURES AND BENEFITS

• Substation for single -family houses

• Indirect heating, - one or two heating
circuits

• Selfacting or electronic control of heating
(HE) temperature

• Connections for DHW cylinder
on DH supply or return line

• Pipes connection in top or bottom of
substation = Savings in installations costs

• Pipes and heat exchanger made of
stainless steel, connections with EPDM
gaskets.

• Minimized risk of lime scale and bacteria
formation

• Electrical wiring from factory - Plug & Play

• Capacity: 20-30 kW HE / 15 kW FH

districtenergy.danfoss.com

40 780 41

861

550

510

55,1 670

136

Danfoss Standard

A3

1:6

Material

Size

Scale

Projection

Danfoss Redan A/S

Approval

Design

Replace

Designation

F

E

D

C

B

A

87

6

5

4

3

2

1

kg

Weight

General tolerance accuracy

VX Solo II

Circuit diagram – example, VX Solo II HWS (ECL 210/A237) - 1 HE circuit + sec. connection for DHW cylinder

1 Plate heat exchanger HE,
with insulation
5 Strainer
6 Non-return valve
7 Ball valve
8 Circulation pump, HE
8A Circulation pump, cylinder
11 Safety valve HE, 3 bar ½”
13 Thermometer
14 Pocket for pressure gauge
15 Manometer
16 Expansion vessel 12 l

23 Sensor pocket for heat meter
24 Fitting piece for heat meter

3/4” x 110 mm
25 Controller Danfoss
ECL210/A237
26 Outdoor sensor, ESMT
27 Sensor Danfoss, ESMC
28 Immersion sensor ESMB
29 Danfoss actuator AMV 150
30 Danfoss ow controller with

integrated control valve

AHQM

Supply limit

Cylinder
Return

Cylinder
Supply

Cylinder

DH
Supply

DH
Reurn

Design specications:

Nominal pressure (prim/sec.): PN 16 / PN 3
Max. supply temperature: 120 °C (design temp.)
Min. ΔP: See capacity examples
Brazing material (HEX): Copper

Weight incl. cover: 46 kg
(incl. packing)

Cover: White-lacquered steel

Dimensions (mm):

Without cover: H 861 × W min. 510*/max. 525** × D 365
With cover: H 861 × W 550 × D 381

* Units with insulated plate heat exchanger type XB06H-1 26.
** * Units with insulated plate heat exchanger type XB06H-1 40.

Electrical supply: 230 V AC

Connections sizes:

DH: G ¾“ ET (ext. thread)
HE, DHW cylinder: G ¾“ ET (int. thread)

1 2 3 4 5

top view

HE
Supply

HE
Return

Connections:

1. District heating (DH) supply

2. District heating (DH) return

3. Heating (HE) return

4. Heating (HE) supply

5. DHW cylinder supply

6. DHW cylinder return

Options:

• Cover, white-lacquered steel, with door

• Electronic controller Danfoss ECL310

• Safety function - safety thermostat + actuator

• Connection of pipes can be established in the top
or in the bottom of the substation

• Pipe insulation

6

• Mounting of heat meter (supplied by customer)

• Supplementary tting set for change of tting
piece size ¾ x 110 mm to tting piece size 1“ x 190

Wall

mm

Heating: Capacity examples

Heating
capacity

Plate heat

exchanger

HE circuit

primary

[° C]

HE circuit

sedondary

[° C]

Pressure loss

primary*

[kPa]

Pressure loss

(only sec . side of
heat exchanger)

[kPa]

Flow rate

primary

([l/h]

Flow rate

secondary

[l/h]

20 XB06H-1 26 75/44 40/65 35 6.0 555 688
20 XB06H-1 26 80/49 45/70 35 6.0 555 688
20 XB06H-1 26 90/51 50/70 29 8.5 441 860
30 XB06H-1 40 75/44 40/65 55 6.0 842 1032
30 XB06H-1 40 80/49 45/70 55 6.0 832 1032
30 XB06H-1 40 90/51 50/70 40 9.0 662 1290

* Heat meter not incl.

Danfoss Redan A/S · District Heating · Omega 7, Søften · DK-8382 Hinnerup · Denmark
Tel.: [phone] · Fax: [phone] · [e-mail] · www.redan.danfoss.dk

VL.GP.O3.02 © Danfoss 08/2014 DKDHR

Application Sheet

VX Solo II
District heating substation for indirect heating and connection
pipes for primary or secondary connnection of DHW cylinder

VX Solo II (T°C)
1 HE circuit, primary connection
for DHW cylinder

1 Plate heat exchanger, HE, with

insulation

4 Dierential pressure controller

AVPL
5 Strainer
7 Ball valve
8 Circulation pump HE
11 Safet y valve HE
13 Thermometer
14 Pocket for pressure gauge
15 Manometer
16 Expansion vessel
17 Air vent
23 Sensor pocket for heat meter
24 Fitting piece for heat meter
3/4” x 110 mm
30 Self- acting thermostatic valve
T°C 200/VS2

Options:

- RAVK 25-65/VMA thermostatic

actuator for temperature control of

DHW cylinder.

Dimensions w/o cover:
H801 x W 510*/max. 525** x D 345 mm
* insulated plate heat exchanger XB06H-1 26.

**insulated plate heat exchanger type XB06H-1 40
Dimensions w/cover:

H801 x W 550 x D 381 mm

Cylinder
Supply

Cylinder
Return

DH
Supply

DH
Return

HE
Supply

HE
Return

VX Solo II H, ECL 210/A230
1 HE circuit.

1 Plate heat exchanger HE
5 Strainer
7 Ball valve
8 Circulation pump HE
11 Safet y valve HE
13 Thermometer
14 Pocket for pressure gauge
15 Manometer
16 Expansion vessel
23 Sensor pocket for heat meter
24 Fitting piece for heat meter 3/4” x

110 mm
25 Controller Danfoss ECL 210/A230
26 Outdoor sensor, ESMT
27 Sensor Danfoss, ESMC
29 Danfoss actuator AMV
30 Danfoss ow controller with

integrated control valve AHQM

Options:
57 Safety thermostat

Dimensions w/o cover:
H861 x W 510*/max. 525** x D 365 mm
* insulated plate heat exchanger XB06H-1 26.

**insulated plate heat exchanger type XB06H-1 40
Dimensions w/cover:

H861 x W 550 x D 381 mm

DH
Supply

DH
Return

HE
Supply

HE
Return

VL.GP.O3.02 Produced by Danfoss Redan A/S · 08.2014

3