Danfoss Termix One-B-FI Fact sheet
Fact sheet
Termix One-B-FI
Instantaneous water heater for flats, single-family houses and small apartment buildings with up to 4 flats
Application
The Termix One is an instantaneous
water heater featuring superb heat
extraction and high performance.
The Termix One is suitable for flats,
single-family houses as well as for
small apartment buildings with up
to 4 apartments. The water heater
is available in two sizes, either for
1 apartment or for 1-4 apartments.
The Termix One is applicable for
decentralized heating systems – as
well as for district heating networks
with summer operation at low
temperatures or changes in differential pressure. The Termix One heat
exchanger cools the district heating
water very efficiently, thereby creating a very good operation economy.
Domestic hot water (DHW)
The domestic hot water is prepared
in the heat exchanger and the
temperature is regulated with a thermostatic control valve. The patented
sensor accelerator accelerates the
closing of the Danfoss AVTB valve and
protects the heat exchanger against
overheating and lime scale forma-
tion. The sensor accelerator and
AVTB valve also works as a bypass
keeping the house supply line warm.
This shortens the waiting periods
during summer when the heating
system is in reduced operation. The
sensor accelerator helps to ensure
a stable hot water temperature by
varying loads, flow temperatures
and differential pressure without
the need for readjusting the valve.
There is no additional pressure loss
on the secondary side of the DHW
heat exchanger with a thermostatic
control. Therefore this type of regulation can be used by low pressure
on the in the cold water mains.
Construction
All pipes are made of stainless steel.
The connections are made by nuts
and gaskets. The Termix One comes
with a complete fully insulated cover
thus minimizing the heat loss both
during tapping of domestic hot
water but also in standby mode.
FEATURES AND BENEFITS
• Instantaneous water heater
• DHW regulation with an accelerated
thermostatic control
• Capacity: up to 29 – 45 kW on 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
• Low heat loss
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CIRCUIT DIAGRAM – EXAMPLE
Termix One-B with complete insulation
B Plate heat exchanger DHW
7 Thermostatic valve
DH
supply
DH
return
Technical parameters:
Nominal pressure: PN 16
DH supply temperature: T
DCW static pressure: p
Brazing material (HEX): Copper
= 120 °C
max
= 0,5 bar
min
Weight: 10 – 12 kg
(incl. packing)
Dimensions (mm):
H 435 × W 355 × D 195 (type 1+2)
Connections sizes:
DH + DCW + DHW: G ¾” (ext. thread)
Connections:
1 Domestic cold water (DCW)
2 Domestic hot water (DHW)
3 District heating (DH) supply
4 District heating (DH) return
Wall
Seen from above
DHW
DCW
Options:
• Booster pump (increases DH flow)
• Safety valve and non-return valve (10 bar)
• Safety valve with thermostatic circulation set
• Thermostatic circulation set
• Non-return and pressure equalizer (GTU)
DHW: CAPACIT Y EXAM PLES, 10°C / 50°C
DHW
Substation type
Type 1
w/AVTB 15
1 household
capacity
Supply flow
primary
[kW]
29,3 60 23,0 20 630
38,2 60 25,2 45 822 47,1 60 26,8 45 1014
37,8 70 20,0 20 816 45,1 70 21,3 20 972
© Danfoss | DCS-SDGPT/ PL | 2021. 08
Return flow
[°C]
primary
[°C]
Pressure
loss primary
[kPa]
Flow rate
secondary
[l/h]
Substation type
Type 2
w/AVTB 20
up to 4 households
DHW
capacity
Supply flow
primary
[kW]
34,7 60 24,4 20 744
[°C]
Return flow
primary
[°C]
Pressure
loss primary
[kPa]
AM195786467432en-020301
Flow rate
secondary
[l/h]
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