Danfoss Termix VX Compact 28 Fact sheet

Fact sheet

Termix VX Compact 28

District heating substation for indirect heating with electronic controls. Designed for wall-mounting.

Application

The Termix VX Compact 28 is a com­plete solution for space heating with
optimal safety, efficient energy trans­fer, service-friendly construction and
a compact design. The substation is
applicable, if a heat exchanger is re­quired or on a conversion to district
heating, where the existing equip­ment is unsuitable for direct connec­tion. The Termix VX Compact 28 sub­station is ideal, where a high level of
security against burst pipes and wa­ter damage in the heating system is
required.

District heating (DH)

The district heating circuit is prefab­ricated with a flow controller with in­tegrated control valve, thermometers
and ball valves.

Heating (HE)

The heating circuit consists of a plate
heat exchanger, safety valve, manom­eter, thermometers, ball valves, drain
valve, air valve and circulation pump.

The heating temperature is con­trolled by an electronic controller
with an outdoor temperature sensor.
Depending on the application, dif­ferent heat exchangers dimensioned
for central or floor heating can be
used.

Domestic hot water (DHW)

Termix VX Compact 28 is supplied
with connection pipes for a DHW
tank on the supply line.

Options

Termix VX Compact 28 can be deliv­ered with white-lacquered steel cov­er or with filling line.

Construction

All pipes are made of stainless steel.
The connections are made by nuts
and gaskets.Other information about

other required components

FEATURES AND BENEFITS

• Substation with high efficiency brazed
plate heat exchangers for properties
of between 1 to 30 apartments, made
from acid-proof stainless steel

• Wall-mounted construction

• Suitable for new buildings as
well as renovation projects

• Small, lightweight, compact
construction

• Electronic controllers for heating
and domestic hot water systems

• Advanced gasket system - primary side

• Fast and reliable delivery

• Danfoss substations and heat
exchangers are manufactured
according to European Pressure
Dire ctive PED 9979797/23/WE

www.heating.danfoss.com

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products
already on order provided that such alterations can be made without subsequential changes being necessary eady agreed.
All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

CIRCUIT DIAGRAM - EXAMPLE

25 bar

25

25 bar

25

= 120 °C

max

9

18

1

DN 25

181

DN 25

A Plate heat exchanger HE
F Electronic controller
1 Ball valve
4 Safety valve
9 Strainer
10 Circulation pump
16 Outdoor sensor
18 Thermometer

Technical parameters:

Nominal pressure: PN 16
DH supply temperature: T
Brazing material (HEX): Copper

Weight: approx. 50 kg

Insulation: EPP λ 0.039

Dimensions (mm)
Without cover: H 970 × W 620 × D 420
With cover: H 970 × W 640 × D 522

Electrical supply: 230 V AC

1 18

1

19 Surface sensor
20 Filling/drain valve
24 Delivered loose with unit
25 Manometer with ball valve
26 Manometer
27 Actuator
30 Flow control w. control valve
48 Air escape, manual

105

1 2 3 4 5 6

27 19

30

DN 20

100 100 100 90 130

Seen from above

16

1

A

1

F

4 bar

48

4

230 V

26 19 10

20

wall

1

18

DN 25

24

18

Connections:

1. District heating (DH) supply

2. District heating (DH) return

3. Heating (HE) supply

4. Heating (HE) return

5. Tank (DHW) supply

6. Tank (DCW) return

Connection sizes:

DH + HE G 1” (int. thread)

Options:

• Cover

• Filling line

1

DN 25

9

CAPACITY, WEIGHT AND DIMENSIONS

Substation type

Ter mix VX

Compact 28

VX - 1 45 80 / 55 50 / 70 50 1580 1974
VX - 1 50 100 / 62 60 / 80 50 1168 2204
VX - 1 50 120 / 71 70 / 90 50 899 2210
VX - 1 80 90 / 46 40 / 70 50 1625 2333
VX - 2 75 80 / 55 50 / 70 50 2652 3290
VX - 2 80 100 / 62 60 / 80 50 1868 3525
VX - 2 80 120 / 71 70 / 90 50 1439 3536
VX - 2 110 90 / 46 40 / 70 50 2187 3205
VX - 3 95 80 / 55 50 / 70 50 3314 4168
VX - 3 100 100 / 62 60 / 80 50 2317 4403
VX - 3 100 120 / 71 70 / 90 50 1793 4420
VX - 3 140 90 / 46 40 / 70 50 2757 4079

Heating
capacity

[kW]

Heating circuit

primary

[°C]

Heating circuit

secondary

[°C]

Pressure loss

primary

[kPa]

Flow rate

primary

[l/h]

Flow rate

secondary

Gemina Termix A/S · Member of the Danfoss Group · Navervej 15-17 · DK-7451 Sunds · Denmark
Tel.: [phone] · Fax: [phone] · [e-mail] · www.heating.danfoss.com

© Danfoss | DHS-SRMT/ PL | 2016. 05

[l/h]

VL.EH.J3.02