Fact sheet
Comfort II GTD/VTD and GS/VS
Floor or wall-mounted cylinder systems for single-family houses for central and district heating
FEATURES AND BENEFITS
• Compact district heating
substation with hot water cylinder
• Plenty of DHW, 100/150 l cylinder
• Totally insulated cylinder, min.
heat loss
• Superior heating capacity
• Fine operating economy
• Complies with modular measures
• Wall-mounted solutions, which are
suitable for implementation with
DR II distribution units
Application
The Comfort II GTD/GS and VTD/VS units
are ready-made solutions for heating and
domestic hot water for direct systems in
single-family house, which are connected
to a district heating network.
Configuration
The Comfort II range can be configured
according to local requirements and legislation, however as a standard the substations are prefabricated with domestic
hot water cylinder, ball valves, differential pressure controller, non-return and
safety valves, fitting piece for heat meter,
thermometers, strainers, sensor pockets,
pressure relief valve as well as a functional cover in a new design. The Comfort II
GTD/GS come with a complete cover as
standard delivery. The cover for the VTD/
VS must be ordered separately. The cylinder cover is delivered fully assembled and
the bottom part cover is supplied unassembled.
Design
The Comfort II GTD/GS are ready-made
solutions, which are prepared for floor-mounting.
The technical part featuring the substation control is placed below the cylinder.
The cover consists of a cylinder cover, two
side plates as well as a detachable front
cover for the technical part. This facilitates
heat meter readings and maintenance.
The Comfort II VTD/VS are wall-moun-ted
solutions, which are suitable for mounting
in an installation cabinet. The VTD/VS are
supplied unassembled, consisting of a separate cylinder as well as a technical part,
for mounting on site. The VTD/VS can, if
ordered separately, be supplied with cylinder cover and bottom part cover. The
Comfort II VTD/VS are especially suitable
for implementation with a Danfoss Redan
DR II distribution unit.
Domestic hot water cylinder
The Comfort II range is supplied with a
100 or a 150 liter cylinder with Danish VA
approval. The highly efficient cylinder is
double-enamelled and supplied with a
heating coil, which is designed for the use
of district heating as heating source for
domestic hot water heating. The cylinder
is fully insulated with environmentally friendly PU foam, which minimizes the heat
loss and ensures the best possible operating economy.
Domestic hot water circulation
The Comfort II range is prepared for DHW
circulation. For new systems it is recommended to establish domestic hot water
circulation, which ensures that domestic
hot water is available im- mediately when
tapping starts.
Service friendly and easy to install
Suitable piping and consistent use of union nuts to connect pipes facilitates the
servicing and mounting of the substation.
Reading and initial adjustment
Thermometers are placed in the front part
of the substation, easily read. Thermostats
for adjustment of the heating and the domestic hot water temperature are placed
conveniently to facilitate the adjustment.
www.heatwwwwww.danfoss.com
764
1885
1872
560
268
D
B
C
D
B
C
560
D
C
B
A
87
6
5
4
3
764
1885
1872
560
268
60 65 65 65 65 65 65 100
D
B
C
ISO 2768 - mK
General tolerance accuracy
Weight
293,634 kg
E
F
Designation
Comfort2 GVX Kbh.
Replace
Design
14-11-2011
JJ
Approval
Danfoss Redan A/S
Projection
Scale
Size
Material
1:10
A3
Danfoss Standard
CIRCUIT DIAGRAM – EXAMPLE
NOTE! Components in the
dotted areas are fitted only in
Comfort II VS and GS
DHW
7
64 62
Circ.
DCW
7
12
6
19
24A
DH
7
5
23
Supply
DH
14
7
24
23
4 5
Return
Technical parameters:
Nom. pressure (prim/sec): PN 10 / PN 103
Max. supply temp: 120 ºC
Min. ∆P: See capacity examples
Weight:
GTD 100/150 ltr. 120/145 kg (incl. cover)
GS 100/150 ltr. 125/150 kg (incl. cover)
VTD 100/150 ltr. 8 0/105 kg (incl. cover)
VS 100/150 ltr. 85/110 kg (incl. cover)
Dimensions (mm):
Floor-mounted w/cover: H 1885 x W 550 x D 560
Wall-mounted w/cover: H 1617 x W 550 x D 560
Fitting piece for heat meter:
Connections sizes:
¾ x 110 x 165 mm flex. re turn
G ¾
43A
13A
7
32
43
43
1885
764
268
60 65 65 65 65 65 65 100
2
7
560
Connections
2. DHW cylinder
4. Differential pressure controller
5. Strainer
6. Non-return valve
7. Ball valve
8. A-labelled pump - HE, 230V AC
(only GS/VS)
12. Safety valve, DHW, 10 bar
13. Thermometer
13A. Thermometer
14. Pressure relief valve
17. Air valve (only GS/VS)
19. Tap valve (with plug)
17
30
6
1617
1872
496
44,5
GTD/GS
VTD/VS
550
8
1603
23. Sensor pocket for heat meter
24. Flexible fitting piece for heat meter
¾” x 110-165 mm
24A. Fitting pipe for heat meter
30. Thermostat, HE (only GS/VS)
32. Thermostat, DHW
43. Connection pipe with blind
plate before mixing circuit
43A. Blind plate
---------------------------------------------
62. Non-return valve (not part of dly)
64. Circ. pump (not part of dly)
13
14
7
HE
Supply
13
7
HE
Note! GS/VS units are supplied
with connection pipes for radiators
before heat exchanger for direct
connection.
Return
Connections:
1. District heating (DH) supply
2. District heating (DH) return
3. Circulation
4. Heating (HE) return
5. Heating (HE) supply
6. Domestic hot water (DHW)
7. Domestic cold water (DCW)
Options Art. No.
Cylinder cover (for GTD/GS and VTD/VS) 936.1201
Complete cover, wall-mounted VTD/VS 936.1231
Bottom part cover, wall-mounted VTD/VS 936.1240
Complete cover, floor-mounted GTD/GS 936.1211
Bottom part cover, floor-mounted GTD/GS 936.1220
DHW: Capacity examples, 10°C/50 °C
Cylinder
volume, ltr.
Supply
flow
primary
°C
Return
flow
primary
°C
70 30 245 11, 4 GTD/VTD100 15 30 30 0,55 470
100
65 30 204 9, 5 GTD/VTD150 15 30 30 0,55 470
60 30 172 8,0 GTD/VTD100 15 40 40 0,39 400
150
70 30 245 11, 4 GTD/VTD150 15 40 40 0,39 400
65 30 204 9, 5 GS/ VS100 8 40 5
60 30 172 8,0 GS/ VS150 8 40 5
© Danfoss | DHS-SRMT/ PL | 2018 . 05
Constant flow
rate
l/h
Constant
capacity
kW
Heating: Capacity examples Tot al
Temperatures
Capacity
kW
Primary
Typ e
GS/ VS100 15 40 10
GS/V S150 15 40 10
°CSecundary
°C
1
1
1
1
Pressure loss
Primary
(total2) bar
0,16 290
0,16 290
0,29 400
0,29 400
Flow
Primary
(total2) l/h
VL.IE.W2.02
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