THE Middle East subsidiary of Switzerland-based Belimo Automation, will launch innovative products such as its ZTH-Gen adjustment tool, an on-site parameterising and testing tool at The Big 5.

The company offers a broad selection of parameterisable actuators for air dampers, valves, VAV (variable air volume) controllers and fire dampers, says David Stevenson, general manager of Dubai-based Belimo Automation.
“These MF, MP, MFT and MFT2 types are programmed at the factory with basic values for the most common applications. Typical parameters such as running time, angle of rotation and stroke limitation or mode settings (0...10 V / 2...10 V) can be adapted to each particular application with the ZTH-Gen plug-and-play adjustment tool. Mechanical and electrical contractors or service personnel are saved considerable time whenever a system needs to be commissioned or parts replaced,” he explains.
The ZTH-Gen adjustment tool can be used simply to monitor the actuators or for direct control in order to simulate defined system scenarios, says Stevenson, adding that the unit integrates a whole series of powerful diagnostic functionalities: function test, position preset, test set point/actual value, test damper position and actual volumetric flow. The wide range of potential applications eases system maintenance and makes a valuable contribution to achieving maximum operational reliability. Also on display will be Belimo’s latest A6 series shut-off valves, which are said to be ideal for all open-close and shut-off tasks in closed heating and cooling circuits. Thanks to the stainless discs, they can also be used in open water circuits without any problems, says Stevenson.
“Our comprehensive range comprises nominal widths from DN 25 to DN 250 with optimised kv values (larger DNs on request),” he adds.
Another major product that will be showcased at The Big 5 is Belimo’s butterfly valves from the D6..N range, designed for all standard open/closed shut-off applications for heating and cooling circuits. “Once fitted, you can just leave the robust, durable and maintenance-free shut-off valve to get on with things and simply forget about it,” he says.
The tight-closing shut-off valve additionally helps prevent energy losses and is also maintenance free, he adds. The shut-off and butterfly valves are designed to resist temperatures from -20 deg C to +120 deg C (or peaks of +130 deg C per hour) without any problems. They feature a robust epoxy coating and a stainless steel disc. Since pressure classes PN6/10/16 are integrated in the flange dimensions, stock levels can be reduced.
The high level of material and production quality lends the A6 shut-off valves and the D6..N butterfly valves a long service life – they will function reliably for many years without the need for any maintenance, he adds.

Integrated solutions
Stevenson continues: “With its comprehensive range of motorised butterfly valves, Belimo offers integrated and remarkably cost-efficient solutions for controlling medium-to-high volumetric flows. The exceptionally-low pressure losses of the D6..N series assure optimum energy efficiency. Premium product quality and intelligent actuator concepts guarantee long-term protection of investments.”
The D6..N range of butterfly valves comprises nominal widths from DN 25 to DN 350. Owing to the minimal pressure losses, significant energy savings are possible in applications like two-way injection circuits, open cooling towers or hot and cold water distribution systems. “These butterfly valves and actuators have demonstrated their unrivalled operational reliability in tests under extreme conditions. In practice, this means lower costs both for the purchase of Belimo's low-priced valve/actuator combinations and for their operation,” he says.

New products
Belimo now offers a new range of modulating actuators with torques from 18 to 500 Nm (up to 3500 Nm for retrofit business) for motorising the D6..N butterfly valves.
“Its fast running times improve the quality of control. Special MF types allow each actuator to be optimised on site for its respective application while its MP types permit up to eight actuators to be grouped together in an MP-Bus line and integrated in any popular fieldbus system. The wiring costs for bus integration are reduced by up to 90 per cent as a result,” says Stevenson.
Belimo has also introduced its new CRA24-B3 room controllers, which offer better room climate in airtight buildings, thus increasing the level of comfort while helping save energy.
“The pressure conditions – and hence the air quality – in energy-efficient buildings with controlled, forced ventilation can vary considerably. The new CRA24-B3 room temperature controller is designed with special kitchen and bathroom inputs to overcome this problem,” he says.
When the steam vent or chimney exhaust is switched on, these inputs make sure any pressure differences are compensated by the ventilation. And thanks to the controlled bathroom override function, unpleasant odours and damp are reliably extracted, so that mould and fungi are effectively eliminated. If the building occupant is planning to be absent for a long period, he can switch off the system automatically by means of the energy hold-off function, which causes the room to be ventilated for half an hour three times a day. As a result, energy consumption is reduced, air hygiene improved and the building protected.
The CRA24-B3 can be used as a stand-alone solution or – definitely the most energy-efficient alternative – combined with Belimo VAV controllers and the fan optimiser for demand-based fan control, he says.
Belimo also offers CM actuators with supercap module with integrated energy storage and closing function, which are suitable for extreme weather conditions.
“Inclement weather represents a daunting challenge for any air-conditioning system and the situation becomes particularly critical in the case of a power failure. The new supercap module for the ultra-flat CM compact actuators, therefore, has an integrated energy storage function. This function is instantly activated if the mains supply is interrupted, generating sufficient power to run two CM actuators to the closing position. The supply air dampers are closed, so that no unpleasant draughts are felt inside the room and no damage is caused to the heating and cooling elements.
“The supercap module is mounted outside the units in false floors, ceiling voids or cable ducts. It supplies two CM compact actuators with the power they need for normal operation and emergency closing. And since it is fed from the 230 V system, the supercap module can be integrated into the controlled power supply anywhere in the building,” explains Stevenson.
The Belimo Middle East office and warehouse is located in the Dubai Airport Free Zone, where its full range of air and water products are held in stock, supported by a dedicated sales team offering comprehensive technical and after-sales service. Seminar presentations on VAV, fire and smoke control, energy saving and many other subjects associated with its product range are available at either at its free zone offices or at its customers’ own premises.
Belimo Middle East will be exhibiting at Stand 1B09 at The Big 5 show.