User Manual

6/8
Siemens 2-Port and 3-Port Zone Valves, PN 16 / 20 CE1N4867en
Building Technologies For Asia Pacific Use Only 02.10.2008
Technical data
Valves
Operating data PN class PN 16 / 20 to EN1333
Permissible operating pressure 2000 kPa (20 bar)
Valve characteristic The trim is designed for ON/OFF control only.
Leakage
2-port valve: Path A  AB
3-port valve Path AB  A
Bypass AB  B
according to DIN EN 1349
0…0.05 % of k
vs
0…0.05 % of k
vs
max. 2…5 % of k
vs
Permissible media chilled water, low-temperature hot water and water with
antifreeze. Recommendation: water should be treated as
specified in VDI 2035
Temperature of medium 1...110 °C, short-term max. 120 °C
Nominal stroke 2.5 mm
Standards Pressure Equipment Directive PED 97/23/EC
Pressure Accessories as per article 1, section 2.1.4
Fluid group 2 without CE-marking as per article 3, section 3
(sound engineering practice)
Valve body hot-pressed brass (EN 1982)
Stem stainless steel
Plug, seat, gland brass or Bronze Rg5
Materials
Sealing glands EPDM O-rings
Dimensions / Weight Dimensions and weight refer to «Dimensions»
Threaded connections (valve) Rp to ISO 7-1
Actuators
Power supply
Operating voltage
Voltage tolerance
AC 230 V
-15/+10 %
Frequency 50/60 Hz
Power consumption 12 VA
Primary fuse external (max 3 A)
Control
Positioning signal 2-position
1)
Parallel operation of several actuators permitted
2)
Opening / closing operations
recommended number: approx. 10‘000 / year
(equivalent to approx. 50 per day)
Operating data
Position with de-energized actuator
2-port valve (MVI421..)
3-port valve (MXI421..)
A  AB closed
AB  A closed
Positioning time (open / close) 50 Hz: 10 s
60 Hz: 8 s
Nominal stroke 2.5 mm
Positioning force 200 N
Manual adjustment 0…90 %
Standards
Housing protection
Upright to 85 ° horizontal, do not suspend IP30 to EN 60529
Environmental comptatibility
ISO 14001 (Environment)
ISO 9001 (Quality)
SN 36350 (Environmentally compatible products)
RL 2002/95/EG (RoHS)
Mounting
Fixing on valve plastic union nut M30 x 1.5