User Manual

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Siemens Building Technologies Thermostatic Radiator Valve Head CE1N2156en
HVAC Products 13.10.2003
Equipment combinations
The RT86.2 can be combined with radiator valves type VD1...,VE1..., VD2..., VE2...,
VU2... or VUC515... (refer to data sheet CE1N2150E under «Type summary»). The
temperature sensing element is accommodated in the remote adjuster.
If required, the RT86.2 can be equipped with the RT56.15 thermostatic head (with frost
protection function) or with a manual knob (in place of the 56.05 thermostatic head).
Settings
Provided the radiators are correctly sized and the heating curve is correctly set, the
numbers on the thermostatic head correspond to the following room temperatures:
Setpoint in °C
Off 8 12 16 20 24 28
RT86.2 with minimum limitation, 2 m capillary
0 ∗ 1 2 3 4 5
Technical data
Hysteresis ≤ 1 K
Influence of heating medium at ∆t 30 °C ≤ 0.75 K
Influence of differential pressure < 1 K
Closing time 34 min
Setpoint setting range 8...28 °C
Setting scale 0...5
Normal position 3 20 °C
Frost protection position ∗ 8 °C
Fully closed position number 0
P-band (with radiator valve) 2 K
Length of capillary tube 2 m
Perm. ambient temperature
Transport and storage −15...+60 °C
Weight 0.44 kg
Mounting
Mounting choices and requirements:
2156Z01
The remote adjuster has the temperature sensing element integrated:
• The circulation of room air around the remote adjuster must not be obstructed
• The remote adjuster may not be exposed to direct solar radiation