Danfoss VVX-ID 22-22 Fact sheet

Fact sheet

Termix VVX-ID 22-22 fully insulated

P-Marked district heating unit for single family houses

FEATURES AND BENEFITS

• District heating unit for houses

• Indirect heating, Hot water
temperature regulation using
athermostatic / ow control valve

• Electronic heating regulation using
outdoor sensors and supply sensors

• Capacity for up to 15 kW heating
and 0.32 liter/second hot water

• Functions independently of
dierential pressure (0.5 – 6.0 bar)

• Low installation space requirement

• Stainless steel piping and plates

• Minimal risk of scaling and
bacteria formation

• Fully insulated

Application

Termix VVX is a complete solution
for hot water and heating, oering
optimum safety, ecient heat trans­fer, service-friendly construction and
acompact design. The district heating
unit is used on a conversion or a new
connection to district heating.

District heating (DH)

The district heating unit is provided
with tting pieces and sensor pock­ets for installation of heat meters,
and horizontally-mounted strainers
on all circuits. Primary and secondary
connections are optionally up and/or
down. Cold and hot water connections
are up as standard, but can locally be
easily changed to down (also available
as accessories with connectors that
are both up and down).

Heating (HE)

The heating circuit consists of aplate
heat exchanger, safety valve, ma­nometer, thermometer (supply tem­perature), shut-o valves, air vent
valve, expansion vessel and circula­tion pump. The supply temperature is
regulated electronically with outdoor
sensors and supply sensors. Various
sizes of heat exchangers can be used,
depending on the capacity needed.

Domestic hot water (DHW)

Hot water is produced in the heat ex­changer and the temperature is reg­ulated with a self-acting thermostatic
valve that checks the hot water tem­perature using the ow control prin­ciple. Rapid closure of the thermostat
valve protects the heat exchanger
from overheating and scaling. The
control valve guarantees a stable
hot water temperature, even during
a changing duty cycle. The heat ex­changer cools the district heating
water very eectively, which provides
excellent operational economy. The
thermostat valve also functions as

a bypass, keeping the district heat­ing culvert heated. This means short­er waiting times during the summer
when the district heating is supplied
at a lower temperature.

Options

The district heating unit can also be
supplied with a thermal bypass that
is tted before the heat meter.

Construction

All pipes and plates are made of
stainless steel. Connectors are made
of brass that is sealed with gaskets.
Heat exchanger for the primary sys­tem for heating and direct hot water
heating with a self-acting thermo­static/ow control valve. Intended
for wall-mounting, P-labeled district
heating unit for houses connected to
a district heating system.

heating.danfoss.com

E-mail: [e-mail]
www.danfoss.com/sweden

CIRCUIT DIAGRAM  EXAMPLE

DHW

16

230 V

24

4

DCW

35

14

63

9

DHF

41

DHR

A Heat exchanger, HE
B Heat exchanger, DHW
F Electronic controller
1 Ball valve
4 Safety valve
9 Strainer

10 Circulator pump
14 Sensor pocket, energy meter
16 Outdoor sensor
18 Thermometer
19 Surface sensor
24 Delivered loose with unit

Technical parameters:

Nominal pressure: PN 16
DH supply temperature: T
Min. di. pressure: p
Brazing material (HEX): Koppar

= 120 °C

max

= 0.5 bar

min

Weight incl. cover: 35 kg
Electrical supply: 230 V AC

Dimensions (mm):

Without cover: H 750 × W 500 × D 360
With cover: H 800 × W 540 × D 430

B

35A

55 100 70 70 70 70

1 2 3 4 5 6

800

1 2 3 4

74

27

A

29

26 Pressure gauge
27 Actuator
29 2-way motorized valve
35 Ball valve / non-return valve
35A Fitting piece, energy meter
38 Expansion tank

530

45

F

A

4 bar

48

26

18

4

38

24

1

63

1

HFL

HRL

10

41 Fitting piece, energy meter
48 Air vent, manual
63 Sieve
74 IHPT

Connections:

1. DH supply

2. DH return

3. HE supply

4. HE return

5. DHW

6. CW

Connections:

DH + HE + DHW + CW: G ¾“ (int. thread)

Options:

• VVC kit

• Thermostatic bypass

• Room thermostat

• Danfoss ECL Comfort 310

30

42 70 140 70

DHW: CAPACITY EXAMPLES

Typ e

VVX-ID 22-x

Capacity

[kW]

Primary

supply

Tem p. [ °C]

33 65 18,0 10 / 50 73 0,17 / 0,2
50 65 20,2 10 / 50 108 0,27 / 0,3
55 65 21,0 10 / 50 149 0,3 / 0,33

Primary

return

Tem p. [°C ]

CW/DHW

Tem p.

[°C]

Pressure

loss sec.

[kPa]

Flow

Prim./

Sec . [l/s]

Danfoss AB · Marieholmsgatan 10C · 415 02 Göteborg
Tel.: [phone] · Fax: [phone] · [e-mail] · varme.danfoss.se

© Danfoss | DHS-SRMT/ PL | 2016 . 12

45

390

HEATING: CAPACITY EXAMPLES

Typ e

VVX-ID x-22

Capacity

[kW]

Primary

supply

Tem p. [ °C]

15 100 60,2 60 / 80 19,7 0,1 / 0,19

8 65 45,1 45 / 55 19,1 0,1 / 0,18

Primary

return

Tem p. [°C ]

Second-

ary Temp.

[°C]

Pressure

loss sec.

[kPa]

Flow

Prim./

Sec . [l/s]

VL.IE.U3.02