Danfoss VX-Compact-28-HWP Fact sheet

Fact sheet

Termix VX-Compact-28-HWP

Indirect substation for apartment buildings with up to 25 apartments

FEATURES AND BENEFITS

• Substation for apartment buildings

• Indirect heating, connections
for domestic hot water tank

• Thermostatic or electronic regulation
of heating (HE) temperature

• Capacity: 35-75 kW heating

• Minimum space required for installation

• Pipes and plate heat exchanger
made of stainless steel

Application

The Termix VX Compact 28 is a com­plete solution for space heating with
optimal safety, ecient 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 motorized control valve,
dierential pressure controller, ther­mometers, ball valves, tting piece
and sensor pockets for insertion of
aheat meter.

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 can be con­trolled by the electronic controller
with an outdoor temperature sensor.

Domestic hot water (DHW)

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

Options

As an option the substation can be
equipped with a thermostat with
safety monitor. This is possible only
for substations with electronic con­troller.

Construction

All pipes are made of stainless steel.
The connections are made by nuts
and gaskets. The Termix VX Compact
28 is delivered with a white-lac­quered steel cover.

www.danfoss.com

Danfoss GmbH Fernwärme- und Regelungstechnik · Carl-Legien-Str. 8 · 63073 Oenbach

CIRCUIT DIAGRAM – EXAMPLE

DH
supply

DH
return

HE
supply

HE
return

A Plate heat exchanger HE
F Electronic controller
1 Ball valve
4 Safety valve
9 Strainer
10 Circulation pump
14 Sensor pocket, energy meter
16 Outdoor sensor
18 Thermometer
19 Surface sensor
20 Filling/drain valve
23 Ball valve
24 Delivered loose with unit
25 Manometer with ball valve
26 Manometer
27 Actuator
29 2-way motorized valve
41 Fitting piece, energy meter
48 Air escape, manual
50 Di. pressure cont. ow limiter

Technical parameters:

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

Weight: approx. 50 kg

Dimensions (mm):

H 940 × W 620 × D 420

Electrical supply: 230 V AC

max

= 120 °C

HEATING: CAPACITY EXAMPLES

Substation

type

Type 1

Type 2

Heating

capacity

[kW]

50 90 / 55 50 / 70

50
35
50

35 80 / 60 55 / 75
75 90 / 55 50 / 70
75 80 / 55 50 / 70
55 75 / 55 50 / 70
75 90 / 60 55 / 75
55 80 / 60 55 / 75

Connections:

1 District heating supply (DH)
2 District heating return (DH)
3 Heating supply (HE)
4 Heating return (HE)
5 Tank supply (DHW)
6 Tank return (DCW)

seen from above

Heating circuit

primary

[°C]

80 / 55 50 / 70
75 / 55 50 / 70
90 / 60 55 / 75

Heating circuit

secondary

[°C]

wall

Connections sizes:

DH: 1” (ext. thread)
HE: 1” (int. thread)
DCW + DHW: ¾” (int. thread)

Options:

• Thermostat with safety monitor

Flow rate

primary

[l / h]

1200 2238
1830 2238
1823 1623
1426 2238
1797 1623
1801 3378
2735 3378
2723 2460
2140 3378
2687 2460

Flow rate

secondary

[l / h]

Technische Beratung/Angebote: Tel.: 069 / 8902 - 960 · Fax: 069 / 8902 466 - 948 · [e-mail]
Auftragsabwicklung: Tel.: 069 / 8902 - 970 · Fax: 069 / 8902 466 - 949 · [e-mail]

© Danfoss | DHS-SRMT/ PL | 2016 . 04

VL.IE.I2.02