Danfoss VMTD MIX Compact 28 Fact sheet
Fact sheet
Termix VMTD MIX Compact 28
Direct substation for apartment buildings with up to 25 apartments
Application
The Termix VMTD MIX Compact
28 is a complete solution with a
built-in water heater and a heating circuit with mixing loop.
The substation is the perfect solution
for apartment buildings with up to 25
apartments.
District heating (DH)
The district heating circuit is
prefabricated with a flow controller with integrated control
valve and primary ball valves.
Furthermore the substation is delivered with a mixing loop, which includes pump and non-return valve.
Heating (HE)
The heating circuit is designed for
direct connection. The flow controller with integrated control valve
sets the optimum operation conditions for radiator thermostats
in order to enable individual temperature control in each room.
The mixing loop creates a suitable
temperature level for the heating system.
Domestic hot water (DHW)
The domestic hot water is prepared
in the plate heat exchanger and the
temperature is regulated with an
electronic controller. The efficient
heat exchanger offers exceptionally
good heat extraction with high output. No readjustment of the DHW
temperature is required after installation and initial setting of the controls.
The electronic control automatically
retains the comfort tempe rature of
the hot water, even when the heating system is in reduced operation
during summer or if the district heating plant changes operat ing parameters between summer and winter. An
integrated circulation pump for DHW
is installed.
Options
Termix VMTD MIX Compact 28 can be
delivered with white-lacquered steel
cover.
Construction
All pipes are made of stainless steel.
The connections are made by nuts
and gaskets.
FEATURES AND BENEFITS
• Substation for apartment buildings
• Direct heating with mixing loop
• Thermostatic or electronic controls
• Capacity: 100-150 kW DHW, 100 kW HE
• DHW in sufficient quantity
• Operates independently
of differential pressure
and flow temperature
• Minimum space required
for installation
• Pipes and plate heat exchanger
made of stainless steel
• Minimized risk of lime scale
and bacteria formation
www.danfoss.com
CIRCUIT DIAGRAM EXAMPLE
DH
supply
DH
return
HE
Supply
HE
Return
DHW
DCW
Circ.
B Heat exchanger DHW
F Electronic controller
1 Ball valve
2 Non-return valve
10 Circulation pump HE
11 Circulation pump DHW
16 Outdoor sensor
18 Thermometer
19 Surface sensor
25 Manometer with ball valve
27 Actuator
30 Flow control w. control
valve
40 Immersion sensor
48 Air vent, manual
Technical parameters:
Nominal pressure: PN 10/16
DH supply temperature: T
DCW static pressure: p
Brazing material (HEX): Copper
Weight: 40-50 kg
Dimensions (mm):
without cover: H 940 x W 750 x D 440
With cover: H 940 x W 800 x D 522
Electrical supply: 230 V AC
= 120 °C
max
= 0,5 bar
min
DHW: CAPACITY EXAMPLES
DHW
capacity
[kW]
100 70 22 50 2150
110 70 22 50 2365
120 70 22 50 2580
130 70 22 50 2795
140 70 22 50 3010
150 70 22 50 3225
Supply
flow
primary
[°C]
Connections:
1. District heating (DH) supply
2. District heating (DH) return
3. Heating (HE) Supply
4. Heating (HE) return
5. Domestic hot water (DHW)
6. Domestic cold water (DCW)
7. DHW circulation (Cirk.)
Seen from above
Return
flow
primary
[°C]
Wall
Connections sizes:
DH + HE + DCW + DHW: G 1” (int. thread)
Circulation: G 3/4” (int. thread)
Options:
• Cover
Temperature
secondary
[°C]
secondary
Flow rate
[l/h]
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 . 05
VC.LB.T4.02
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