Danfoss Comfort II GVX, Comfort II VVX Fact sheet
Fact sheet
Comfort II GVX and VVX
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
• Equipped with a highly efficient plate
heat exchanger
• 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 GVX and VVX units are
ready-made substations for heating and
domestic hot water for indirect 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 plate heat
exchanger, domestic hot water cylinder,
thermostats, ball valves, differential pressure controller, expansion vessel, non-return and safety valves, fitting piece for
heat meter, circulation pump, manometers and thermometers, strainers, sensor
pockets, pressure relief valve as well as
a functional cover in a new design. The
Comfort II GVX comes with a complete
cover as standard delivery. The cover for
the VVX must be ordered separately. The
cylinder cover is delivered fully assembled and the bottom part cover is supplied
unassembled.
Design
The Comfort II GVX is a ready-made solution, which is 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 VVX is a wall-mounted solution, which is suitable for mounting in a
installation cabinet. The VVX is supplied
unassembled, consisting of a separate
cylinder as well as a technical part, for
mounting on site. The VVX can, if ordered separately, be supplied with cylinder
cover and bottom part cover. The Comfort II VVX is 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 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 immediately 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
DHW
Circ.
DCW
DH
Supply
DH
Return
Technical parameters:
Nom. pressure
(prim/sec): PN 16 / PN 3
Max. supply temp: 120 ºC
Min. ∆P: See capacity examples
Weight:
GVX 100/150 ltr. 130/155 kg
VVX 100/150 ltr. 90/115 kg
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:
¾ x 110 x 165 mm flex. return
Connections sizes:
G ¾
13
560
Floor-mounted
GVX
side view
1885
764
268
60 65 65 65 65 65 65 100
Connections
1. Plate heat exchanger, HE
2. DHW cylinder
4. Differential pressure controller
5. Strainer
6. Non-return valve
7. Ball valve
8. A-labelled pump - HE, 230V AC
9. Plug
11. Safety valve, HE, 2.5 bar
12. Safety valve, DHW, 10 bar
13. Thermometer
13A. Thermometer
14. Pressure relief valve
15. Manometer, 2.5 bar
1
Wall-mounted
VVX
side view
1603
1872
1617
496
44,5
GVX/VVX
top view
Front
550
16. Expansion vessel
17. Air valve
23. Sensor pocket for heat meter
24. Flexible piece for heat meter
¾ x 110-165 mm
29. Thermostat Danfoss RAVK, HE
30. Valve, Danfoss VMA 15, HE
31. Thermostat Danfoss RAVK, DHW
32. Valve, Danfoss VMA 15, DHW
43. Blind plate
---------------------------------------------
62. Non-return valve (not part of dly)
64. Circ. pump (not part of dly)
HE
Supply
Note! Units with heat exchanger
for floor heating are supplied with
connection pipes for radiators
before heat exchanger for direct
connection.
HE
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 GVX and VVX) 936.1201
Complete cover, for wall-mounted VVX 936.1231
Bottom part cover, for wall-mounted VVX 936.1240
Complete cover, for floor-mounted GVX 936.1211
Bottom part cover, for floor-mounted GVX 936.1220
DHW: Capacity examples, 10°C/50 °C Heating: Capacity examples Tot al
Temperatures
Primary
°CSecondary
°C
Pressure loss
Primary
(total2) bar
Cylinder
volume, ltr.
Supply
flow
primary
Return
primary
°C
70 30 245 11, 4 100 -26 15 30 30 0,55 470
100
150
65 30 204 9,5 150-26 15 30 30 0,55 470
60 30 172 8,0 100 -24
70 30 245 11, 4 100 -24
65 30 204 9,5
60 30 172 8,0
© Danfoss | DHS-SRMT/ PL | 2018 . 05
flow
°C
Constant flow
rate
l/h
Constant
capacity
kW
Typ e
GVX/VVX
1
1
Capacity
kW
15 40 40 0,39 400
15 40 40 0,39 400
Flow
Primary
(total2) l/h
VL.KS.U3.02
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