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Technical Data 2111Fluid chilled, hot water, up to 60% glycolFlow characteristic A-port equal percentage, B-port modified for
constant common port flowControllable flow range 75°Valve Size [mm] 0.75” [20]Pipe connection NPT female endsHousing Nickel-plated brass bodyBall stainless steelStem stainless steelStem seal EPDM (lubricated)Seat PTFEO-ring EPDM (lubricated)Characterised disc TEFZEL®Body Pressure Rating 600 psiClose-off pressure ∆ps 200 psiCv 4.7 Weight 0.88 lb [0.40 kg]Fluid Temp Range (water) 0...250°F [-18...120°C]Leakage rate 0% for A – AB,
Dimensions (Inches [mm])
D C
BA
E F
NRB N4, NRX N4
A B C D E F11.4” [289] 2.8” [70] 7.7” [196] 7.0” [179] 3.1” [80]
Dimensions (Inches [mm])
BA
C
D
E F
TFRB, TFRX
A B C D E F6.6” [167] 2.7” [69] 4.9” [124] 4.3” [110] 1.5” [39]
Dimensions (Inches [mm])
H1
E F BA
DC
H2
LRQB, LRQX
A B C D E F H1 H28.9”
[226]2.7” [69]
6.3” [159]
5.6” [142]
1.6” [40] 1.2” [30]
1.3” [33]
Dimensions (Inches [mm])
BA
E F
D C
LF
A B C D E F8.6” [218] 2.7” [69] 6.3” [159] 5.6” [142] 1.8” [46] 1.9” [48]
Dimensions (Inches [mm])
A
B
D C
E F
TR
A B C D E F3.7” [95] 2.7” [69] 4.8” [122] 4.2” [107] 1.3” [33] 1.2” [31]
C D7.7” [196] 7.0” [179]
B317 Technical Data SheetStainless Steel Ball and Stem
800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA / CARIBBEAN
Date
cre
ated
, 09/
11/2
019
- Sub
ject
to c
hang
e. ©
Bel
imo
Airc
ontro
ls (U
SA),
Inc.
Technical Data 2271Power Supply 24 VAC, ±20%, 50/60 Hz, 24 VDC, ±10%Power consumption in operation 1.5 WPower consumption in rest position
0.4 W
Transformer sizing 3 VA (class 2 power source)Electrical Connection 18 GA plenum cable, 3 ft [1 m], with 1/2”
conduit connectorOverload Protection electronic thoughout 0...90° rotationOperating Range DC 2...10 V, 4...20 mA w/ ZG-R01 (500 Ω,
1/4 W resistor)Input Impedance 100 kΩ for DC 2...10 V (0.1 mA), 500 Ω for
4...20 mAPosition Feedback DC 2...10 VAngle of rotation 90°Direction of rotation motor reversible with built-in switchPosition indication Mechanically, pluggableManual override external push buttonRunning Time (Motor) 90 sAmbient humidity max. 95% r.H., non-condensingAmbient temperature -22...122°F [-30...50°C]Storage temperature -40...176°F [-40...80°C]Degree of Protection IP54, NEMA 2, UL Enclosure Type 2Agency Listing cULus acc. to UL60730-1A/-2-14, CAN/CSA
E60730-1:02, CE acc. to 2004/108/ECNoise level, motor 35 dB(A)Maintenance maintenance-freeQuality Standard ISO 9001Weight 1.1 lb [0.50 kg]
†Rated Impulse Voltage 800V, Type action 1.B, Control Pollution Degree 3.
Safety NotesWARNING: For Belimo products sold in California: these products do or may contain chemicals which are known to the State of California to cause cancer and or birth defects or other reproductive harms. For more information see www.p65warnings.ca.gov.
LRB24-SR Technical Data SheetModulating, Non-Spring Return, 24 V, for DC 2...10 V or 4...20 mA
800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA / CARIBBEAN
Date
cre
ated
, 09/
11/2
019
- Sub
ject
to c
hang
e. ©
Bel
imo
Airc
ontro
ls (U
SA),
Inc.
Wiring Diagrams
INSTALLATION NOTES
Provide overload protection and disconnect as required.
Actuators may be connected in parallel. Power consumption and input impedance must be observed.
Actuators may also be powered by 24 VDC.
Only connect common to negative (-) leg of control circuits.
A 500 Ω resistor (ZG-R01) converts the 4 to 20 mA control signal to 2 to 10 VDC.
Actuators with plenum cable do not have numbers; use color codes instead.
Meets cULus requirements without the need of an electrical ground connection.
! WARNING! LIVE ELECTRICAL COMPONENTS!During installation, testing, servicing and troubleshooting of this product, it may be necessary to work with live electrical components. Have a qualified licensed electrician or other individual who has been properly trained in handling live electrical components perform these tasks. Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury.
Blk (1) Common
Red (2) Hot +
Control Signal (+)VDC/mA
(–)
Feedback Signal (+)2 to 10 VDC (–)
Ω 500 Ω
LineVolts
Org (5) U Output
Wht (3) Y Input, 2 to 10V
24 VAC Transformer 2 18
2 to 10 VDC / 4 to 20 mA Control
LRB24-SR Technical Data SheetModulating, Non-Spring Return, 24 V, for DC 2...10 V or 4...20 mA
800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA / CARIBBEAN
Date
cre
ated
, 09/
11/2
019
- Sub
ject
to c
hang
e. ©
Bel
imo
Airc
ontro
ls (U
SA),
Inc.