Danfoss RAS-C Data sheet
Data Sheet
RAS-C2 Range
Radiator Thermostats for Domestic 2-Pipe Systems
Application
System
RAS-C² radiator thermostats are designed for use
in 2-pipe domestic heating systems.
All RAS-C² Combi Packs comprise of a RA-FS
angled or straight pattern bi-directional valve
and a RAS-C2 sensor designed for 2-pipe heating
systems.
Combi Packs are also available with a RLV-D
lockshield valve or drain-o tailpiece.
The valves have a ½” BSP (R½”) tail piece
connection to the radiator and are available with
15mm, 10mm or 8mm compression tting or an
elbow with 10mm push-t tting to connect the
valve to the pipe work.
The valve bodies are reversible and bi-directional
and include a ow-selectable feature to ensure
trouble free installation without any risk of water
hammer. For optimum performance, Danfoss
recommend the sensor be mounted horizontal
where at all possible.
The valve is supplied with a protective cap, which
can be used for manual regulation during the
construction phase. The cap must not be used as
a manual shut of device.
RAS-C² sensors incorporate a “Frost Protection”
setting and a “Positive O” feature for maximum
user exibility. Temperature range is from 8°C to
28°C.
© Danfoss Climate Solutions | 02/2022 | AI000086402453en-010803
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Data Sheet RAS-C2 Range - Radiator Thermostats for Domestic 2-Pipe Systems
Ordering Details
Valve bodies and RAS-C2 thermostatic sensors supplied complete in Combi-pack form
Tem p.
Symbol Typ e Comprising
range °C,
Xp = 2 K
RAS-C² Combi
6050
RAS-C² Combi
6055
RAS-C² Combi
6058
RAS-C² Combi
6060
RAS-C²
Radiator Pack
6005
RAS-C²
Radiator Pack
6006
15 mm angle valve body and
thermostatic sensor
10 mm angle valve body and
thermostatic sensor
8 mm angle valve body and
thermostatic sensor
Angle valve body, RAS-C
2
thermostatic sensor and elbow
with 10 mm push-t tting
15 mm angle valve body,
lockshield valve and
thermostatic sensor
10 mm angle valve body,
lockshield valve and
thermostatic sensor
8-28 013G6050
8-28 013G6055
8-28 013G6058
8-28 013G6060
8-28 013G6005
8-28 013G6006
Code No.
RAS-C²
Radiator Pack
6008
RAS-C²
Radiator Pack
6007
RAS-C²
Radiator Pack
6009
RAS-C²
Radiator Pack
6025
RAS-C²
Combi Pack
6051
RAS-C²
Combi Pack
6056
RAS-C²
Radiator Pack
6003
8 mm angle valve body,
lockshield valve and
thermostatic sensor
Angle valve body, lockshield
valve, thermostatic sensor and
elbows with 10 mm push-t tting
15 mm angle valve body,
lockshield valve, thermostatic
sensor and drain-o tailpiece
with 10 mm push-t tting
15 mm angle valve body,
lockshield valve, thermostatic
sensor and drain-o tailpiece
with 15 mm push-t tting
15 mm bi-directional straight
valve body and thermostatic
sensor, 15 mm ttings
8/10 mm bi-directional straight
valve body and thermostatic
sensor, 8/10 mm ttings
15 mm bi-directional straight
valve body, lockshield valve, thermostatic sensor, 15 mm ttings
8-28 013G6008
8-28 013G6007
8-28 013G6009
8-28 013G6025
8-28 013G6051
8-28 013G6056
8-28 013G6003
RAS-C²
Radiator Pack
6004
2
© Danfoss Climate Solutions | 02/2022 | AI000086402453en-010803
8/10 mm bi-directional straight
valve body, lockshield v alve, therrmo
-static sensor, 8/10 mm fittings
8-28 013G6004
Data Sheet RAS-C2 Range - Radiator Thermostats for Domestic 2-Pipe Systems
RAS-C² sensors supplied in a separate box
Typ e Sensor (Max. sensor temperature 60°C) Temp. range °C (Xp = 2 K) Code No.
RAS-C2Built-in (includes positive shut-o) 8 - 28 013G6040
Specication
RA-FS angle valves supplied in separate boxes
Connection
Typ e
RA-FS 15
1) 3)
RA-FS 15
3)
with
pusht
elbow
1)
RA-FS valves must only be used with RAS-C2 or RAS-D sensors.
2)
As with any device which imposes a pressure drop in the system, noise may occur under certain ow/
Design
Inlet
Rev.
Angle15mm
Rev.
8/10mm1/2”
Angle
Rev.
Angle10mm
Outlet
kv-value (m³/h at Δp = 1
bar), P-band (K)
0.5 1.0 2.0 3.0 k
1/2”
BSP
BSP
0.13 0.27 0.50
1/2”
BSP
0.64
Max. pressure
0.73
vs
Work.
press.
Di.
press.
bar bar bar °C
10 0.6 16 12 0
3 0.6 6 92
Tes t
press.
Max.
temp.
Code No.
013G 6281
013G6283
pressure conditions. To ensure quiet operation, maximum pressure drop should not exceed 45 kPa (0.45
bar). The dierential pressure can be reduced using Danfoss automatic by-pass valve AVDO.
3)
Only available in Combi packs.
The push-t tting is suitable for 10 mm copper
pipes manufactured in accordance to BS 2871
Always use plastic pipe inserts of the same brand
as the pipe used.
part 1 / BS EN 1057 : 1996 and suitable for 10 mm
polybuthelene (PB) including Hep2O, Polyplumb,
OsmaGold and 10 mm cross linked polyethylene
(PEX) pipes made in accordance to BS 7291 part
1 : 1990 or part 3 : 1990.
Approved to EN 215
Quality Standards
All Danfoss RAS-C2² sensors and RA-FS
valves are manufactured to the highest
standards and are approved to the
European standard EN 215, which
supersedes BS 6284, 1983.
All Danfoss radiator thermostats and valves are
manufactured in factories, assessed and certied
by BVC (Bureau Veritas Certication) against ISO
9001 / BS 5750.
© Danfoss Climate Solutions | 02/2022 | AI000086402453en-010803
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