Data sheet
ThermoDual®- CM (Charging module)
General Description / Use
Maximum operating
parameters
Primary
Maximum permissible supply temperature, primary
Maximum permissible operating pressure, primary
Rated pressure, primary
Maximum permissible pressure dierential, primary
Secondary
Maximum permissible temperature, secondary
Maximum permissible operating pressure, secondary
Minimum required pressure (static), water supply
Rated pressure, secondary
Mains power supply / maximum power consumption
Domestic hot water provision by storage charging
principle is an ecient so lution that fulls all hygienic
requirements. Hot water is stored at temperatures
that kill or prevent the growth of pathogens.
Favourable habitats for the proliferation of bacteria
such as legionella do not exist, provided the system
is operated in accordance with the instructions.
Ideally this requires an integrated circulation
management. When combined with optimally
hygienic stainless steel water tanks from our SE/SES
series, these systems are the ideal solution where
security of supply is of the essence, particularly at
peak load.
The system’s essential benets are:
• hygienically safe
• ecient cooling of the primary medium
• optimum use of energy
• free choice from a wide range of energy sources
• at all times sucient hot water temperature to
meet hygienic requirements
• constant hot water temperature
90°C / 150°C (without/with safety function)
10 / 20 bar(g)
PN10 / PN25
only 2-way valve variant: 25 bar (up to 210kW) /16 bar
90°C
10 bar(g)
1.0 bar(g)
PN10
230V AC / 4.0 A
Pumps and 3-way valve variant /
2-way valve variant
Materials
Code numbers
© Danfoss | 2018.01
Pipes, ttings, anges, valves (domestic side)
ditto (heating side) P235GH-TC1, CuSn5Pb5Zn5-C (RG-5), ST37.0, EN-JL 1040 (GG25)
Heat exchanger 1.4404 with Cu solder
Insulation Hardcover PU hard foam λ=0.029 W/mK (100%ENEV)
Capacity
[kW]
140 00 4X1695 00 4X1689 004X1677 004X1683
210 00 4X1781 0 04X1776 004X1766 0 04X177 1
280 004X1782 004X1777 00 4X1767 0 0 4X1772
350 004X178 3 00 4X177 8 004X176 8 00 4X177 3
420 004X1784 004X1779 004X1769 0 04X1774
455 0 04X1785 0 04X178 0 00 4X1770 0 04X1775
Pump +
3-way mixing valve
Pump control
(PWM control signal)
1.4571, bronze or brass as per DIN EN 1982,
also considering DIN 50930-06 and UBA guidelines
Code no.
2-way valve
(without safety function)
2-way valve
(with safety function)
VD.IQ.I5.02 | 1
Data sheet ThermoDual®-CM (Charging module)
Circuit
diagram
Technical data
HEL Heat exchanger, charging
P2 Charging pump
P1 Heating pump
P3 Circulation pump
SFV Safety valve
M1 Motorized control valve (2/3-way)
ECD Electronic domestic hot water controller
(ECL 310 / P318.1)
STW Safety thermostat (optional)
DTA Domestic hot water storage tank (installed by customer)
1 Domestic water (cold/charging)
2 Domestic hot water (hot/charging network)
3 Circulation (inlet)
4 Heating supply
5 Heating return
TC Sensors (general: direct , immersion, sur face)
“S2”: with designation as for controller
3-way
dpr
[kPa]
FR
TW
(10 ->60 °C)
[m3/h]
DW
dpr
[kPa]
*
FR
C
(55 ->60°C )
[m3/h]
Typ e
ThermoDual®
Capacity
[kW]
p
FR
(70 ->25° C)
[m3/h]
Shut-off valve
Non-return valve
Check valve
Balancing valve
Air vent
Drain
Dain
sampling valve
(optional)
Pump
dpr
[kPa]
2-way
dp
[kPa]
CM 140 140 2.4 52 21 38 2.4 41 1.0 / 2.4 80 / 43
CM 210 210 3.8 95 30 81 3.6 89 1.5 / 2.4 70 / 43
CM 280 280 5.1 86 29 76 4.8 88 2.0 / 2.4 57 / 43
CM 350 350 6.3 74 30 59 6.0 71 2.5 / 3.4 51 / 30
CM 420 420 7. 8 53 30 54 7. 2 55 3.0 / 3.4 38 / 30
CM 455 455 8.0 59 22 54 7. 8 52 3.3 / 3.4 3 4 / 31
FR: Flow rate p: primary dpr: Remaining pump head dp: Pressure loss DW: Domestic water C: Circulation
* ow rate: standard setup / maximal possible
** remaining pump head for: standard setup / maximal possible
C
dpr**
[kPa]
2 | © Danfoss | 2018.01
VD.IQ.I5.02
Data sheet ThermoDual®-CM (Charging module)
TC
TC
TC
2 3 1
4
5
TC
TC
P2
DTA
HEL
M1
ECD
P3
Function Low load operation (with circulation)
ECD
2 3 1
DTA
HEL
TC
TC
M1
TC
P3
4
5
TC
TC
P2
ECD
2 3 1
DTA
HEL
TC
TC
M1
TC
P3
4
5
TC
TC
P2
In low-load operation, all the cold water passes
over the instantaneous water heater (HEL). If the
tap load is less then the ow pre -set at the balancing
valve, a portion of the water (tap volume) ows
trough the top of the tank (DTA) as bypass to the
taps. The remaining volume is drawn from the
bottom of the tank so that the tank (DTA) continues
to be charged. The total tap load is covered by the
heat exchanger (HEL), while the storage tank (DTA)
is not being discharged.
Peak load operation
In peak-load operation, the pre-set ow of cold
water passes through the instantaneous water
heater (HEL) and the remainder ows through the
tank (DTA) from bottom to top. The tap load is
covered from the instantaneous water heater (HEL)
and the storage tank (DTA) is simultaneously
discharged. Once tap operation ceases, the storage
tank (DTA) is charged as described below.
Charging operation (no tap load / circulation)
If there is no consumption the storage tank (DTA)
is being charged. The total charging ow is drawn
from the bottom of the tank (DTA) and passed via
the instantaneous water heater (HEL) to the top of
the tank (DTA).
VD.IQ.I5.02
© Danfoss | 2018.01 | 3
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Data sheet ThermoDual®-CM (Charging module)
Dimensions
Connections: Weight [kg]
Typ e
ThermoDual®
CM 140 1 ¼"A 1 ¼"A 1 ¼" 42.4 97 94 103
CM 210 1 ¼"A 1 ¼"A 1 ¼" 42.4 104 100 107
CM 280 1 ½"A 1 ¼"A 1 ½” 48.3 110 106 115
CM 350 1 ½"A 1 ¼”A 1 ½" 48.3 115 110 119
CM 420 1 ¾"A 1 ¼"A 2” 60.3 124 115 12 9
CM 455 1 ¾"A 1 ¼”A 2" 60.3 130 121 135
DW C/H Circ.
1/2 G ISO 3 G ISO
HTG (DN)
SL, RL
4/5 PN10 Rp4/5 PN25
HTG (DN)
SL, RL
WELD
Pump +
3-way v.
Pump
control
(PWM)
935
2-way v.
1830
110 –16 0
338
488
1
156 174 174
132
23
45
640
415
Correlation of connections
1 Domestic cold water
2 Domestic hot water
3 Circulation (inlet)
4 Heating supply line
5 Heating return line
oss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products
vided that such alterations can be made without subsequential changes being necessary eady agreed.
4 | © Danfoss | DHS-SMT/PL | 2018.01
tive companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
VD.IQ.I5.02
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