Danfoss AT BTD Fact sheet
Fact sheet
Termix AT BTD
Tank solution for domestic hot water preparation with thermostatic control.
Application
The Termix AT BTD is a complete tank
solution for DHW preparation with a
pressure independent balancing and
control valve. The AT BTD is available
in two versions: with and without
connection for domestic cold water
tap. The substation is used instead of
a conventional DHW unit with a plate
heat exchanger; making it the perfect
choice for areas where problems with
corrosion-aggressive fresh water is
known to occur.
District heating (DH)
On the primary side, the unit consists
of a combined balancing and control
valve for thermostatic DHW control
and shut-o valves for ow and return
lines.
Domestic hot water (DHW) The domestic hot water circuit consists of a
hot water tank with coil. The hot water tank and coil are enameled and the
tank contains a magnesium anode. A
safety valve is installed in the cold water mains.
Options
The AT BTD is available in a version
with a connection for cold water tap.
This unit also comprises tting pieces
for metering of the cold water mains
and the cold water tap. Furthermore
the unit has DHW shut-o valves
for both DCW and DHW circuits. A
mounting rail for in-wall mounting of
the connections is oered as an accessor y.
Construction
All pipes are made of stainless steel.
The connections are made by nuts
and gaskets. The Termix AT BTD is
completed by a white steel cover in
modern design with door.
FEATURES AND BENEFITS
• Substation for single - family
houses or apartments
• DHW regulation with a pressure
independent balancing
and control valve
• Ideal for areas with corrosion
aggressive fresh water
• 100 or 150 ltr. tank
• Available with 4 or 5
connections; 5 connections for
domestic cold water tap
• Suitable in cases of low
district heating capacity
• Pipes made of stainless steel
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CIRCUIT DIAGRAM - EXAMPLE
100/4 + 150/4
DHW
DCW
DHF
DHR
Technical parameters:
Nominal pressure: PN 10*
DH supply temperature: T
= 95° C
max
Weight incl. cover:
85-100 kg (incl. packing)
Cover: White-lacquered steel
Dimensions (mm):
H 1220 x W 540 x D 520 (type 100/4 + 100/5)
H1550 x W 540 x D 520 (type 150/4 + 150/5)
100/5 + 150/5
DHW
DCW
DWM
DHF
DHR
Connections:
The connections are situated
underneath the hot water tank
Connections sizes:
DH + CWM + DCW + DHW: ¾“G (int.
thread)
100/4 + 150/4
E Hot water tank with coil
1 Ball valve
4 Safety valve
20 Filling/drain valve
59 Di./Temp. Reg. w. ow lim.
100/5 + 150/5
E Hot water tank with coil
1 Ball valve
1A Ball valve, DVGW
2 Single check valve
4 Safety valve
20 Filling/drain valve
41A Fitting piece, cold water mains
Options:
• Fitting pieces for metering of the cold
water mains and the cold water tap (type
100/5 + 150/5)
• Accessory - Mounting rail for in-wall
mounting of connections
Module code number:
AT BTD 100/4: 144H1741
AT BTD 150/4: 144H1742
AT BTD 100/5: 144H1739
AT BTD 150/5: 144H1740
Mounting rail: 144H1752
DHW: Capacity examples, 10 °C / 50 °C
Substation type
AT BTD - 1 100
AT BTD - 2 150
* Output first hour = constant output + 60 % of tank volume
Tank volume
[ l ]
Coil supply / return
temperature
[ °C ]
80 / 40 486 546 22,6
70 / 30 245 305 11,4
60 / 30 172 232 8,0
80 / 40 486 576 22,6
70 / 30 245 335 11,4
60 / 30 172 262 8,0
DHW
constant output
[ l/h ]
DHW
output first hour*
[ 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 | 2017. 05
DHW
constant output
[ kW ]
VL.JV.Y2.02
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