TA-Smart Fail-safe – NPT threads/ANSI flanges

2-way control valve with uniquely shaped EQM characteristics with flow, temperature, power measurement capabilities and electronic fail-safe function

The ultrasonic flow measurement technology combined with unique actuation algorithms capabilities provide best-in-class control performances. The TA-Smart Fail-safe controls can be set to flow or power, giving high on-site flexibility and providing highly effective comfort in heating and cooling applications. Its compact arrangement and simple set-up reduces installation and commissioning time.

Technical SpecificationsTA-Smart_Fail-safe_NPT_ANSI_US_low.pdf

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Features and Benefits

Fully configurable fail-safe

Setting of position (extended, retracted) or intermediate position, flow or power. Possibility to set delay for entering/leaving failsafe mode for a reliable and optimal fail-safe function. Ability to perform quick health check of fail-safe function.

Best-in-class control

Accurate and fast control response even at very low flows in common part load conditions. Ensures full modulating control for the complete operating stroke leading to world class control and efficiencies.

Optional cloud connection

Easy remote access to data and configuration parameters allows to verify and adjust system performance.

Optional ΔT and temperature return limitation

Optimize the efficiency of your production units by ensuring optimal temperature regimes.

Change-over functionality

Possibility to switch between two operating conditions to manage seasonality or heating and cooling with the same valve in change-over applications.

High measurement accuracy

High flow and temperature measurement accuracies in all configurations (medium type, and temperature) for all flow regimes.

Compactness and limited number of components

Reduces installation time and space requirements facilitating retrofit installation.

Convenient, reliable setup

Fully customizable and commissionable using Bluetooth enabled smart device reducing commissioning and diagnostic time.

Versatility in communication

Digital (key Bus protocols and MQTT) and Analog (0(2)-10 VDC or 0(4)-20 mA).

Applications

Heating and cooling systems.

Functions

Control (flow, power, position)

Pre-setting (max./min. flow, max. power, max./min. position)

Reading (flow, power, energy, supply/return temperature, ΔT, position)

Change-over

Delayed start-up

ΔT and temperature return limitation

Diagnostic/Logging

Electronic fail-safe function

Error safe position

Manual override

Mode, status and position indication

Valve blockage protection

Valve clogging detection

Wireless

Thread

Bluetooth Low Energy (BLE)

Pressure class [PN]

1/2" - 2": PN 25 (362 psi)

2 1/2" - 5": Class 150

Differential pressure (ΔpV)

Max. differential pressure (ΔpVmax): 400 kPa = 4 bar

Closing pressure: 600 kPa = 6 bar

ΔpVmax = The maximum allowed pressure drop over the valve to fulfill all stated performances.

Flow range

The flow ranges (qsetmin - qnom) for different dimensions:

1/2": 0.70 - 5.28 gpm

3/4": 1.67 - 8.37 gpm

1": 2.38 - 11.89 gpm

1 1/4": 4.05 - 20.2 gpm

1 1/2": 6.86 - 34.3 gpm

2": 11.8 - 59.0 gpm

2 1/2": 25.5 - 128 gpm

3": 38.0 - 190 gpm

4": 62.5 - 312 gpm

5": 98.6 - 493 gpm

Minimum controllable flows (qcontr.min) size 1/2" 0.33% of qnom, sizes 3/4" - 5" 0.5% of qnom.

qsetmin = Minimum settable flow.

qnom = Maximum settable flow.

Temperature

Max. working temperature: 110°C

Min. working temperature: 14°F

Operating environment: 32°F to 122°F (5-95%RH, non-condensing)

Storage environment: -4°F to 158°F (5-95%RH, non-condensing)

Media

Water or neutral fluids, water-glycol mixtures (0-57%).

Supply voltage [V]

24 VAC/VDC ±15%. Frequency 50/60 Hz ±3 Hz

Power consumption

1/2" - 2":

Peak: < 4.5 W (24 VDC); < 6.6 VA (24 VAC)

Operation: < 4.2 W (24 VDC); < 6 VA (24 VAC)

Standby: < 2.0 W (24 VDC); < 3.6 VA (24 VAC)

2 1/2" - 3":

Peak: < 10.5 W (24 VDC); < 18.4 VA (24 VAC)

Operation: < 6.1 W (24 VDC); < 11 VA (24 VAC)

Standby: < 2.1 W (24 VDC); < 4.1 VA (24 VAC)

4" - 5":

Peak: < 10.5 W (24 VDC); < 18.4 VA (24 VAC)

Operation: < 8 W (24 VDC); < 11.3 VA (24 VAC)

Standby: < 2.1 W (24 VDC); < 3.8 VA (24 VAC)

Peak consumption occurs for a short period after a power cut for recharging capacitors.

Input signal

By BACnet/Modbus or Analog signal. Analog in VDC or mA, selectable by jumper in the SmartBox;

Proportional dual-range (for change-over): 0-4.5 / 5.5-10 VDC. 2-5.5 / 6.5-10 VDC. 0-3.3 / 6.7-10 VDC. 2-4.7 / 7.3-10 VDC. 0-9 / 11-20 mA. 4-11 / 13-20 mA.

0(2)-10 VDC, Ri 47 kΩ.

0(4)-20 mA R i 500 Ω.

Adjustable sensitivity 0.1-0.5 VDC; 0.33 Hz low pass filter.

Default setting: Proportional 0-10 VDC

Proportional: 0-10, 10-0, 2-10 or 10-2 VDC; 0-20, 20-0, 4-20 or 20-4 mA

Proportional split-range: 0-5, 5-0, 5-10 or 10-5 VDC; 0-4.5, 4.5-0, 5.5-10 or 10-5.5 VDC; 2-6, 6-2, 6-10 or 10-6 VDC; 0-10, 10-0, 10-20 or 20-10 mA; 4-12, 12-4, 12-20 or 20-12 mA

Output signal

0(2)-10 VDC, max. 8 mA, min. 1.25 kΩ.

BACnet/Modbus

Characteristics

Settable: Stepless between EQM 0.25 and inverted EQM 0.25.

Flow control accuracy

±10% from 0.5% to 4% of qnom

±5% from 4% to 100% of qnom

Measurement accuracy

Flow:

Water: From 2% accuracy at 100% of qnom to 2.4% accuracy at 5% of qnom (according MID-Class 2 EN1434).

Water+glycol: From 3% accuracy at 100% of qnom to 4% accuracy at 5% of qnom (according to MID-Class 3 EN1434).

(see “Flow accuracy”)

Temperature difference:

±0.1 K @ ΔT = 6 K (for cooling)

±0.15 K @ ΔT = 10 K (for heating)

±0.2 K @ ΔT = 20 K (for heating)

Leakage rate

DN 15-50: Leakage rate < 0.01% of q, nom with correct flow direction (Class IV according to EN 60534-4)

DN 65-125: Tight sealing with correct flow direction (Class V according to EN 60534-4)

Pipe connection

1/2" - 2": External thread according to ISO 228. Connections (accessories) with internal NPT according to ANSI/ASME B1.20.1-1983, or for soldering according to ASME/ANSI B16.18.

2 1/2" - 5": Flanges according to ASME 7 ANSI B16.42 Class 150.

Temperature sensor cable

32.8 ft. halogen free cable on request.

1/2" - 2": 9.8 ft halogen free

2 1/2" - 5": 16.4 ft halogen free

Material

Sizes 1/2" - 2":

Valve body: AMETAL®

Valve insert: AMETAL®

Valve plug: AMETAL® and PTFE

Spindle: Stainless steel

Spindle seal: EPDM O-ring

Internal plastic parts: PPS

Springs: Stainless steel

O-rings: EPDM

Temperature housing: AMETAL®.

Sizes 2 1/2" - 5":

Valve body: Ductile iron EN-GJS-400-15

Valve insert: Ductile iron EN-GJS-400-15 and brass

Valve plug: Stainless steel and EPDM O-ring

Valve seat: Stainless steel

Spindle: Stainless steel

Spindle seal: EPDM

Springs: Stainless steel

O-rings: EPDM

SmartBox (1/2" - 5"):

Cover: PC/ABS, red.

Housing: PC/ABS, TPE.

Actuators:

Sizes 1/2" - 2":

Cover: PC/ABS GF8, white RAL 9016, grey RAL 7047.

Housing: PA GF40.

Swivelling nut: Nickel-plated brass.

Sizes 2 1/2" - 5":

Cover: PBT, orange RAL 2011, grey RAL 7043.

Bracket: Alu EN44200

Wires: Halogen free

AMETAL® is the dezincification resistant alloy of IMI Hydronic Engineering.

Surface treatment

1/2" - 2": Non treated

2 1/2" - 5": Electrophoretic painting

Ingress protection

IP54 (according to EN 60529)

Protection class

III (SELV)

(according to EN 61140)

Certifications and directives

EMC-D. 2014/30/EU: EN 60730-1, -2-14.

PED: 2014/68/EU

Product standards EN 60730-x.

The table below assists you in finding the relevant product based on its variant. For more details, please download the datasheet above.

Art. No.