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Save Time, Cut Costs, Stay Compliant – Take control with ISYteq 4.0

Theme
System personalisation
Reading time
7 minutes
Published
By
Johan Bjärklev

In today’s buildings, air handling units (AHUs) are expected to do more than just move air. They need to deliver comfort, energy efficiency, and compliance — all while being easy to install, operate, and maintain. That’s where ISYteq 4.0, FläktGroup’s advanced control platform, comes in.

Tailored To Your Unique Application

Imagine a school that is upgrading its ventilation system while teaching carries on as normal. The project must minimise disruption, support a healthy indoor environment for students and stay within strict energy budgets, whilst maintaining building compliance. They choose the eQ Master with ISYteq 4.0 – and here’s why that decision makes sense. 

Key insights at a glance

ISYteq 4.0 helps simplify AHU installation, reduce commissioning time, improve energy efficiency, and support compliance requirements. With factory-fitted controls, seamless BMS integration, and intelligent operating profiles, it delivers a smarter, more efficient approach to air handling unit management.

  • Factory-fitted controls reduce installation time and costs, with pre-wired sensors, actuators, and drives minimising on-site work, reducing wiring complexity, and helping projects stay on schedule
  • Fast commissioning and native BMS integration simplify project delivery, supporting BACnet and Modbus communication while automatically generating BACnet EDE files, saving valuable engineering time during integration
  • Profile-based control helps lower energy consumption, automatically adjusting operation through schedules, boost modes, and demand-based strategies to balance occupant comfort with energy efficiency
  • Built-in monitoring and remote access support compliance and system performance, providing energy monitoring, trend logs, alarms, cloud connectivity, and advanced control functions that help meet Ecodesign and EPBD requirements.

Flexible Installation That Fits Your Project

Commercial buildings, schools and even hospitals often have tight awkward plant rooms that you’d think were designed by a contortionist. Luckily, ISYteq 4.0 comes factory-fitted with sensors, actuators, and drive systems – so say goodbye to those HVAC headaches that put your head in a spin. Take advantage of three switch cabinet configurations, to suit your space, no matter how compact it may be: 

  • Mounted on the inspection side 
  • Hinged at the end wall 
  • Supplied loose for wall mounting. 

Flexibility that enables installers to adapt to the space, reducing the need for costly modifications or workarounds. 

Save Time and Money on Installation 

For hassle-free installation, eQ Master with ISYteq 4.0 is the smart choice. All control components are connected via a bus system, with cables exiting the casing through the shortest route and linking to external quick connectors. This design is optimised for hygiene, with minimal wiring in the air stream and due to there being fewer cables this means less time spent wiring too. Sectional AHUs can be assembled without specialist tools, with no complex programming or rewiring needed. 

Installing controls on site typically takes at least one day per unit and with technician costs typically charged at €1000 per day the financial benefits of factory fitted controls can be substantial. 

Fast Commissioning and Seamless BMS Integration 

ISYteq 4.0 arrives pre-configured and factory-tested, allowing for rapid commissioning. It’s also built for communication, supporting: 

  • BACnet IP & MS/TP 
  • Modbus TCP & RTU 

As a native BACnet controller (B-BC), ISYteq 4.0 automatically generates BACnet EDE files based on your configuration—saving 2–3 days compared to manual integration with non-native systems. 

Consistent User Experience Across Devices 

The user interface is fully web-based, meaning the experience on the 7” ISYteq Touch 7.1 panel is identical to what you see on a mobile phone, tablet, or PC via a browser—provided it’s connected to the Direct Digital Control (DDC). This consistency improves user recognition and leads to more efficient use of resources. 

The intuitive dashboard and flowchart view make it easy to monitor operating status. Historical data is always stored and accessible via the automatic trend log—ideal for performance reviews and fine-tuning. 

Remote Access with ISYteq Cloud 

For secure remote access, ISYteq 4.0 includes a 4G modem and sleeping SIM card, ready for connection to the ISYteq Cloud. This subscription-based service offers: 

  • Full access to the local interface 
  • Trend logs and alarm lists 
  • Email/SMS notifications 
  • Online support from FläktGroup Service 

This is especially valuable in critical environments like healthcare or data centres, where uptime is essential. 

Learn how to log in to ISYteq 4.0 controls for the first time in the video.

Profile-Based Control for Smarter Energy Use 

With energy costs being a big concern, operating your system based on actual demand is more important than ever. ISYteq 4.0 makes this easy with its profile-based control. 

A profile is a predefined set of setpoints and control types that determine how the system operates under specific conditions. The active profile is selected automatically via the internal scheduler, a digital input, or BMS integration. 

ISYteq 4.0 offers seven profiles, including Programable Operating Schedule, Boost, and Night Purge, giving you the flexibility to balance comfort and energy efficiency. You can even link AHU startup to profile conditions—for example, the unit will only start during Night Purge if the indoor temperature falls outside a defined range. 
 

Built for the Future — and Beyond 

ISYteq 4.0 meets and exceeds the recommendations in Eurovent’s 2021 white paper on AHU controls. It’s packed with smart functions that deliver comfort, efficiency, and compliance. It supports: 

  • Automatic pressure balancing to reduce leakage and improve hygiene 
  • Multi-zone control for temperature and humidity 
  • Cooling recovery for sorption wheels, cutting coil energy use by up to 60% 
  • Component-level energy monitoring for Ecodesign compliance 
     

Ready for Ecodesign and EPBD Compliance 

ISYteq 4.0 can also be supplied with energy monitoring at a small additional cost, helping you:

  • Reduce running costs 
  • Identify maintenance needs 
  • Set alarms for abnormal events 

ISYteq 4.0 is designed to meet the upcoming Ecodesign requirements for AHUs — with the potential to achieve control bonuses. This bonus acts as a correction factor for smart controls, used to multiply the maximum allowed internal specific fan power—rewarding intelligent energy-saving strategies. 

 
Why it Matters 

Whether you’re an installer looking for a fast operation with cables and wires kept to a minimum, a facility manager tired of seeing those increasing energy bills, or a consultant trying to stay on the right side of compliance, ISYteq 4.0 offers a practical, future ready solution. Your days of frustration will soon be behind you as the ISYteq 4.0 takes provides all the benefits you need for an efficiently run and operation HVAC system for any building big or small.