Danfoss VMTD MIX-I-FI Mini Fact sheet
Fact sheet
Termix VMTD MIX-I-FI Mini
Direct heating substation for direct heating with mixing loop and instantaneous domestic hot water with flow compensated temperature controller.
Application
The Termix VMTD MIX-I-FI Mini is a complete solution with built - in water heater
and heating system with differential pressure control and mixing loop. The Termix
VMTD MIX-I-FI Mini is applicable for single-family houses and for decentralized
systems in multi - family houses.
District heating (DH)
The substation can be prefabricated with
a differential pressure controller, fitting
piece and sensor pocket for insertion of a
heat meter as well as strainer.
Heating (HE)
The heating circuit is designed for direct
connection. The mixing loop creates a suitable temperature level e.g. for underfloor
heating and ensures optimum control and
monitoring of the heating system.
Domestic hot water (DHW)
The domestic hot water is prepared in
the heat exchanger and the temperature is regulated with a thermostatic and
flow-compensated controller with integrated differential pressure controller. The heat
exchanger offers superb heat extraction of
the DH water, thereby creating an excellent
operating economy. The Danfoss IHPT v alve
insures a stable hot water temperature by
varying loads, supply temperatures and
by high and varying differential pressure
without the need for readjusting the valve.
This protects the heat exchanger against
overheating and lime scale formation. Furthermore the IHPT valve has an integrated
idle temperature controller, which keeps
the house supply line warm. This shortens
the waiting periods during summer when
the heating system is in reduced operation, which is ideal where high comfort is
requested.
Insulation
The Termix VMTD MIX-I-FI Mini comes
complete with a fully insulated cover thus
minimizing heat loss both during tapping
of domestic hot water but also when only
space heating is required.
Construction
All pipes are made of stainless steel. The
connections are made by nuts and gaskets.
FEATURES AND BENEFITS
• Substation for DH and
decentralized systems
• Direct heating with differential
pressure controller
• DHW thermostatic and flow
compensated temperature controller
• Capacity: 32 – 61 kW for DHW
• 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
• Complete insulation ensures
minimal heat loss
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CIRCUIT DIAGRAM - EXAMPLE
DHW
DCW
DH
Supply
DH
Return
Technical parameters:
Nominal pressure: PN 10
DH supply temperature: T
DCW static pressure: P
Brazing material (HEX): Copper
= 110 °C
max
= 1,0 bar
min
Weight incl. cover: 20 kg
Insulation cover: Anthracite grey EPP
Dimensions (mm): H 660 × W 300 × D 240
Connections sizes: DH + HE: G ¾“ (int. thread)
DCW + DHW: G ¾“ (int. thread)
Connections:
1. Domestic cold water (DCW)
2. Domestic hot water (DHW)
3. Heating (HE) supply
4. Heating (HE) return
5. District heating (DH) supply
6. District heating (DH) return
Options:
• Safety valve and non - return valve (10 bar)
• Pressure equalizer GTU
2 Non-return valve
7 Thermostatic valve
9 Strainer
10 Circulator pump
14 Sensor pocket, heat meter
31 Differential pressure
controller
41 Fitting piece, energy meter
63 Filter
74 IHPT
HE
Supply
HE
Return
5 6
56
240
170
117
1 2
3 4
42 70
50` 80
170 90
HEATING: CAPACITY EXAMPLES
Substation type
Ter mix
VMTD MIX-I-FI Mini 1/2/3 15 75/30 30/40 20 287 1290
VMTD MIX-I-FI Mini 1/2/3 15 80/30 30/40 15 258 1290
VMTD MIX-I-FI Mini 1/2/3 15 90/30 30/40 10 215 1290
VMTD MIX-I-FI Mini 1/2/3 20 75/40 40/65 50 491 688
VMTD MIX-I-FI Mini 1/2/3 20 80/45 45/70 50 491 688
VMTD MIX-I-FI Mini 1/2/3 20 90/50 50/70 40 430 860
Heating capacity
[ kW ]
Heating circuit
primar y [ °C ]
Heating circuit
seconda r y [ °C ]
Pressure loss
[ kPa ]
Flow rate
primar y [ l / h]
Flow rate
seconda r y [ l /h]
DHW: CAPACITY EXAMPLES
CAPACITY, WEIGHT AND DIMENSIONS
Substation type
VMTD MIX-I-FI Mini 1
VMTD MIX-I-FI Mini 2
VMTD MIX-I-FI Mini 3
Plate heat
exchanger
XB06-H+ 26
IHPT 3,0
XB06-H+ 40
IHPT 3,0
XB06-H+ 60
IHPT 3,0
DHW capacity
[ kW ]
32.3 60 16 45 27 13.3
43.0 60 17 45 45 17.7
37.0 70 16 50 22 13.3
51.0 70 17 50 42 18.4
32.3 55 17 45 25 13.3
43.0 55 18 45 45 17.7
32.3 60 15 45 20 13.3
49.0 60 16 45 42 20.2
39.0 70 15 50 19 14.1
58.0 70 16 50 40 20.9
42.0 55 16 45 35 17.3
49.0 60 15 45 35 20.2
61.0 70 15 50 35 22.0
Supply flow
primar y [ °C ]
Return flow
primar y [ °C ]
DHW
[ °C ]
Pressure loss
primar y [ kPa ]
DHW tap load
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
[ l / min]
© Danfoss | DCS-SGDPT/ PL | 2021 . 06
AM381236594988en-010101
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