Danfoss Termix VX Fact sheet
Fact sheet
Termix VX
Indirect substation for single and multi-family houses with up to 7 apartments
Application
The Termix VX is a complete solution
for space heating with optimal safety,
efficient energy transfer, service-friendly
construction and a compact design. The
substation is used 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 substation is ideal, when a high level
of security against burst pipes and water
damage in the heating system is required.
District heating (DH)
The substation is prefabricated with a differential pressure controller, fitting piece and
sensor pockets for insertion of a heat meter
as well as strainers and ball valves.
Heating (HE)
The heating side consists of a stainless steel
plate heat exchanger, safety valve, manometer, thermometers, ball valves, drain valve,
air valve, expansion vessel and circulation
pump. The temperature of the heating
can be controlled thermostatically or by an
electronic temperature controller with an
outdoor
temperature sensor. Depending on the
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. This is possible only for
substations with electronic temperature
controller.
Domestic hot water (DHW)
The substation is supplied with connection
pipes for a hot water tank on the primary
side of the heat exchanger.
Construction
All pipes are made of stainless steel. The
connections are made by nuts and gaskets.
The Termix VX is completed by a white steel
cover in attractive modern design.
FEATURES AND BENEFITS
• Substation for single and
multi-family houses
• Indirect heating, connections
for domestic hot water tank
• Thermostatic or electronic regulation
of heating (HE) temperature
• Capacity: 18 – 54 kW heating
• Minimum space required for installation
• Pipes and plate heat exchanger
made of stainless steel
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CIRCUIT DIAGRAM - EXAMPLE
DH
Supply
DH
Return
Technical parameters:
Nominal pressure: PN 10*
DH supply temperature: T
Brazing material (HEX): Copper
*PN 16 versions are available on enquiry
Weight incl. cover: 30 kg
(incl. packing)
Cover: White-lacquered
steel sheet
Dimensions (mm):
Without cover:
H 750 × W 500 × D 360
With connections:
H 800 × W 540 × D 430
14
9
= 120 °C
max
311441
4 bar
1
B
7
1
Connections:
1. District heating (DH) supply
2. District heating (DH) return
3. Heating (HE) supply
4. Heating (HE) return
5. Cylinder supply
6. Cylinder return
45
1 2 3 4 5 6
70 70 70 70 80
Seen from above
48
26
4
10
20
A Plate heat exchanger HE
1 Ball valve
4 Safety valve
7 Thermostatic valve
9 Strainer
10 Circulation pump
14 Sensor pocket, heat meter
18 Thermometer
18
18
Wall
HE
Supply
24
38
9
20 Filling / drain valve
24 Delivered loose with unit
26 Pressure gauge
31 Differential pressure controller
38 Expansion vessel
41 Fitting piece, heat meter
48 Air escape, manual
Connection sizes:
DH + HE: G ¾ (int. thread)
Options:
• Separate mixing circuit
• White-lacquered steel cover
• Possibility for electronic controller
• Room thermostat
• Zone valve with actuator
• Air screw (DH supply)
• Connection for hot water tank
HE
Return
CAPACITY, WEIGHT AND DIMENSIONS
CAPACITY, WEIGHT AND DIMENSIONS
Substation type
VX – 1
VX– 2
VX – 3
Heating capacity
[kW]
18 70 35/60 25 650
20 80 40/70 25 603
24 90 40/70 25 724
30 70 35/60 35 1084
34 80 40/70 35 1025
40 90 40/70 35 1206
45 70 35/60 45 1629
50 80 40/70 45 1509
54 90 40/70 45 1629
Heating circuit
primary [°C]
Heating circuit
secondary [°C]
Pressure loss
primary
[kPa]
Gemina Termix A/S · Member of the Danfoss Group · Navervej 15-17 · DK-7451 Sunds · Denmark
Tel.: +45 9714 1444 · Fax: +45 9714 1159 · mail@termix.dk · www.heating.danfoss.com
© Danfoss | DHS-SRMT/ PL | 2016 . 04
Flow rate
secondary
[l/h]
VC.LB.C3.02
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