GLOBAL

Electric heating tender texts

Ready-made tender texts for electric heating solutions

Looking for tender texts for electric heating solutions such as electric underfloor heating, outdoor ice and snow melting systems, and frost protection for pipes? Scroll down to find ready-to-use texts that make your procurement process easier.

  • Indoor comfort underfloor heating system
     
    The DEVI Comfort Underfloor Heating System is designed to maintain a stable and comfortable floor surface temperature throughout the year, independent of the primary building heating season. The system enhances occupant comfort by providing uniform heat distribution directly at floor level while supporting energy-efficient temperature control and improved indoor comfort conditions.
    Comfort criteria should be designed in accordance with recognised international standards, including ISO/TS 13732-2. Under normal occupancy conditions, the recommended maximum long-term floor surface temperature is approximately 29.5°C. For seated occupants, higher comfort levels may be achieved through a floor temperature increase of up to 1-2°C. In wet or humid environments such as bathrooms, floor surface temperatures may be designed up to 31°C, subject to flooring manufacturer recommendations and project-specific requirements.
    The system is suitable for residential, hospitality, healthcare, educational and commercial applications where user comfort, controllability and long-term reliability are critical.
     
    Electric heating cables and mats
     
    The DEVI product portfolio provides solutions for a wide range of floor constructions, enabling optimal system selection based on floor build-up, renovation constraints and thermal performance requirements.
     
    Thin floor constructions
     
    For renovation projects and floor constructions where build-up height is limited, the following products are recommended:

    - DEVIcomfort™ heating mats
    - DEVImat™ heating mats
    - DEVIcomfort™ heating cables

    These products utilise heating elements with a diameter of approximately 3-4 mm, allowing installation within thin adhesive or levelling layers while minimising impact on floor height.
    Key benefits include:

    - Minimal floor build-up
    - Rapid installation
    - Fast thermal response
    - Suitable for refurbishment projects
    - High comfort performance

    The covering layer shall comply with flooring manufacturer requirements and should generally not be less than 10 mm above the heating element.
     
    Standard and thick floor constructions
     
    For screeded floor applications and new-build projects, the following products are recommended:

    - DEVIflex™ Heating Cables
    - DEVIbasic™ Heating Cables

    These heating cables typically feature a diameter of approximately 7-8 mm and are designed for installation within concrete or screed structures.
    Benefits include:

    - Excellent thermal mass utilisation
    - Uniform heat distribution
    - Long service life
    - Suitable for primary or comfort heating applications
    - Robust construction for demanding installations

    For screeded installations, a minimum screed thickness of approximately 30 mm above the heating cable should be maintained, subject to local construction standards and design requirements.
     
    Low-Build-up and dry construction systems
     
    For projects where traditional screed installation is not feasible, such as renovations, timber floor constructions or lightweight buildings, the DEVIcell™ LowCarbon system provides an alternative solution.
    The DEVIcell™ LowCarbon system combines:

    - Integrated thermal insulation panels
    - Aluminium heat distribution layers
    - Pre-formed cable installation channels

    with:

    - DEVIflex™ 6T heating cables
    - DEVIflex™ 10T heating cables

    This system enables efficient heat distribution without requiring a wet screed layer.
    Key advantages include:

    - Reduced installation time
    - Low floor build-up
    - Dry construction installation
    - Improved thermal response
    - Enhanced energy efficiency due to integrated insulation

    The integrated insulation layer helps reduce downward heat loss and improves system responsiveness compared with non-insulated floor constructions.
     
    Design and installation requirements
     
    The installed heating output shall be selected according to:

    - Floor construction type
    - Floor covering material
    - Building thermal characteristics
    - Intended room usage
    - Applicable local regulations

    The specified heating output shall not exceed the design limitations of the floor construction or floor covering material.
    Incorrect power density selection may result in:

    - Excessive floor temperatures
    - Damage to floor finishes
    - Excessive drying of timber or laminate materials
    - Reduced system performance
    - Increased lifecycle costs

    System design shall therefore be carried out in accordance with manufacturer recommendations and flooring supplier requirements.
     
    Quality assurance and Warranty
     
    All heating elements shall be installed and tested in accordance with DEVI installation procedures and applicable electrical regulations.
    To maintain warranty eligibility:

    - Resistance measurements shall be recorded during installation.
    - Insulation resistance shall be verified before, during and after installation.
    - Installation documentation shall be completed and retained.

    A 20-year manufacturer's warranty is available for heating cables and heating mats when installation and documentation requirements are fulfilled through the DEVI e-Warranty platform or equivalent approved documentation procedures.
     
    Thermostats and control systems
     
    The comfort underfloor heating system shall be controlled using a thermostat equipped with a floor temperature sensor.
    Recommended control solutions include:

    - DEVIreg™ Basic
    - DEVIreg™ Room
    - DEVIreg™ Touch
    - DEVIreg™ Display Connect

    These controllers provide precise temperature regulation and support long-term comfort, energy efficiency and protection of sensitive floor finishes.
    Key control functions may include:

    - Floor temperature sensing and limitation
    - Pulse Width Modulation (PWM) control
    - Programmable schedules
    - Adaptive start functions
    - Energy-saving operating modes
    - User-adjustable temperature settings
    - Smart connectivity (selected models)

    The use of a dedicated floor temperature sensor ensures compliance with maximum floor temperature requirements and helps protect temperature-sensitive floor coverings.
    All listed thermostats comply with applicable Ecodesign (LOT 20) requirements.
     
    Operational benefits
     
    The DEVI Comfort Underfloor Heating System provides:

    - Consistent year-round floor comfort
    - Uniform heat distribution across the heated area
    - Enhanced thermal comfort at lower room air temperatures
    - Reduced visual impact compared with radiator-based systems
    - Optimised energy use through intelligent temperature control
    - Compatibility with a wide range of floor finishes
    - Low maintenance requirements
    - Long-term operational reliability

    The system is particularly suited for areas where occupant comfort, architectural flexibility and efficient temperature management are key project objectives.
     
    Approved components
     
    To ensure safety, performance, compatibility and warranty compliance, only manufacturer-approved DEVI heating elements, sensors, thermostats and accessories shall be used throughout the installation.
     
    Tender evaluation statement
     
    The DEVI Comfort Underfloor Heating System delivers precise floor temperature control, uniform heat distribution and long-term operational reliability through a portfolio of purpose-designed heating cables, heating mats and intelligent thermostats. Suitable for new-build and renovation applications, the solution supports high occupant comfort, energy-efficient operation, flexible installation options and lifecycle value, making it an effective choice for residential, commercial and institutional buildings.
  • Total (direct) underfloor heating system
     
    The DEVI Total Underfloor Heating System is a complete space-heating solution designed to maintain the required indoor temperature without the need for additional heating emitters. Heat is distributed uniformly across the floor surface, providing comfortable and energy-efficient room heating while maximising usable wall and floor space.
    The system is suitable for residential, commercial, hospitality, healthcare and educational buildings where thermal comfort, architectural flexibility and efficient temperature control are key project requirements.
    The heating system shall be designed to compensate for the calculated heat losses of the conditioned space and maintain the indoor temperature specified by the building design criteria.
     
    Electric heating cables and heating mats
     
    The installed heating capacity shall be determined based on:

    - Building heat loss calculations
    - Room function and occupancy
    - Floor construction type
    - Floor covering characteristics
    - Applicable building regulations and standards

    The installed output shall fully compensate for the design heat losses of the heated area while remaining within the thermal limitations of the floor construction and floor covering materials.
     
    Thin floor constructions
     
    For renovation projects and applications with limited available floor height, the following products are recommended:

    - DEVImat™ heating mats
    - DEVIcomfort™ heating mats
    - DEVIcomfort™ heating cables

    These products utilise ultra-thin heating elements with a diameter of approximately 3-4 mm, allowing installation within thin adhesive or levelling layers.
    Benefits include:

    - Minimal floor build-up
    - Fast installation
    - Rapid heat transfer to the floor surface
    - Reduced disruption during refurbishment projects
    - Excellent compatibility with tiled floors

    The covering layer shall comply with flooring manufacturer requirements and should generally not be less than 10 mm above the heating element.
     
    Standard and thick floor constructions
     
    For new construction and screeded floor systems, the following products are recommended:

    - DEVIflex™ heating cables
    - DEVIbasic™ heating cables

    These heating cables have a diameter of approximately 7-8 mm and are designed for installation within concrete or screed floor constructions.
    Key advantages include:

    - Uniform room heating
    - Excellent heat storage characteristics
    - Long operational lifetime
    - Robust mechanical protection within screed structures
    - Suitable for full-space heating applications

    For screeded installations, the minimum screed thickness should typically be 30 mm above the heating cable, subject to local construction requirements.
     
    Dry construction and low-build-up systems
     
    For floor constructions without screed, including renovation projects, lightweight buildings and timber floor systems, the DEVIcell™ LowCarbon solution may be utilised.
    The system combines:

    - Integrated insulation panels
    - Aluminium heat distribution layers
    - Pre-formed cable installation channels

    with:

    - DEVIflex™ 6T heating cables
    - DEVIflex™ 10T heating cables

    This construction provides efficient heat distribution and reduced installation height compared with traditional screeded systems.
    Key benefits include:

    - Dry installation process
    - Reduced floor build-up
    - Faster installation
    - Improved heat distribution
    - Reduced downward heat losses through integrated insulation

    The integrated insulation contributes to improved system responsiveness and overall energy performance compared with uninsulated floor constructions.
     
    Design and Performance requirements
     
    The heating system shall be designed to serve as the primary heat source for the heated space.
    Special attention shall be given to:

    - Building heat loss calculations
    - Thermal resistance of floor coverings
    - Maximum permitted floor temperatures
    - Occupancy profile
    - Energy efficiency objectives

    The specified heating output shall not exceed the structural or thermal limitations of the floor construction.
    Incorrect system sizing may result in:

    - Excessive floor temperatures
    - Damage to floor finishes
    - Excessive drying of timber or laminate flooring
    - Reduced occupant comfort
    - Increased operating costs

    System design shall therefore be performed in accordance with manufacturer recommendations and project-specific engineering calculations.
     
    Quality assurance and Warranty
     
    All heating cables and heating mats shall be installed, tested and commissioned in accordance with DEVI installation instructions and applicable local electrical regulations.
    During installation:

    - Conductor resistance measurements shall be recorded.
    - Insulation resistance measurements shall be completed before, during and after installation.
    - Installation documentation shall be retained.

    A 20-year manufacturer's warranty is available for heating cables and heating mats provided installation, testing and documentation requirements are fulfilled through the DEVI e-Warranty programme or approved alternative documentation procedures.
     
    Thermostats and control systems
     
    The total underfloor heating system shall be controlled using intelligent room thermostats with integrated room temperature sensing and, where required, floor temperature limitation functions.
    Recommended thermostat models include:

    - DEVIreg™ Room
    - DEVIreg™ Touch
    - DEVIreg™ Display Connect

    These controllers provide precise temperature regulation and support efficient operation of the heating system.
    Key control features include:

    - Room temperature control
    - Floor temperature limitation
    - Pulse Width Modulation (PWM) control technology
    - Weekly scheduling and programmable operation
    - Adjustable comfort and setback temperatures
    - Adaptive heating algorithms
    - Energy-saving functions
    - Smart connectivity capabilities (selected models)

    The combination of intelligent control and accurate temperature monitoring helps maintain occupant comfort while optimising energy consumption.
    All listed thermostats comply with applicable Ecodesign (LOT 20) requirements.
     
    Operational benefits
     
    The DEVI Total Underfloor Heating System provides:

    - Primary room heating without visible heating emitters
    - Uniform heat distribution throughout the occupied space
    - Enhanced thermal comfort
    - Increased architectural freedom and usable wall space
    - Silent operation
    - Low maintenance requirements
    - Precise temperature control
    - Long-term reliability
    - Compatibility with a wide range of floor finishes

    Compared with traditional radiator-based systems, heat is delivered directly from the occupied zone, supporting improved comfort and efficient utilisation of floor area.
     
    Approved components
     
    To ensure safety, compatibility, long-term performance and warranty compliance, only manufacturer-approved DEVI heating elements, thermostats, sensors and accessories shall be used throughout the installation.
     
    Tender evaluation statement
     
    The DEVI Total Underfloor Heating System provides a complete electric space-heating solution combining high-quality heating cables and mats with intelligent thermostat
    control. Designed for both new-build and renovation projects, the system delivers uniform room heating, precise temperature management, low maintenance requirements and long-term operational reliability. The solution supports occupant comfort, architectural flexibility and lifecycle value while maintaining compliance with modern energy-efficiency requirements.
  • Scope
     
    The DEVI Cold Store Frost Protection System is a permanently installed electric heating solution designed to protect refrigerated and frozen storage facilities against frost-related structural damage and operational issues. The system is installed beneath cold room floors, foundations, door thresholds, transition zones and other critical building elements exposed to low temperatures.
    Cold storage facilities operate at temperatures significantly lower than surrounding building areas. This temperature difference may result in moisture freezing beneath floor structures and foundations, potentially causing frost heave, structural stress and long-term building deterioration.
    The DEVI solution is designed to maintain suitable temperatures within affected structural elements, helping to prevent frozen ground conditions and supporting the long-term integrity and operational reliability of refrigerated facilities.
     
    Heating cables
     
    The DEVI Cold Store Frost Protection System consists of electric heating cables specifically selected for installation beneath refrigerated floors and associated structural elements.
    Depending on project requirements, the system may utilise approved DEVI heating cable solutions including constant wattage and self-regulating technologies designed for industrial and commercial frost protection applications.
    The heating cable system is integrated directly into the floor construction during the building phase and provides controlled heat to maintain the temperature of the subgrade, insulation layers and structural elements above freezing conditions.

    Key benefits include:

    - Prevention of frost heave beneath cold room floors
    - Protection of foundations and structural elements
    - Uniform heat distribution
    - High operational reliability
    - Long service life
    - Low maintenance requirements
    - Suitable for industrial and commercial refrigeration facilities
    - Compatibility with various floor constructions

    To verify installation quality and maintain warranty eligibility, conductor resistance and insulation resistance measurements shall be performed before, during and after installation in accordance with the manufacturer's instructions.

    Installation shall follow all applicable local electrical regulations and the manufacturer's installation guidelines.
     
    Intelligent control system
     
    The system shall be controlled using approved DEVI thermostats and control solutions such as DEVIreg™ 316, DEVIreg™ 330, DEVIreg™ 610, DEVIreg™ Multi, or equivalent manufacturer-approved control systems depending on the application requirements.
    The control system continuously monitors operating conditions and regulates heating output to maintain the required protection temperature beneath the refrigerated structure.
    The control strategy may be configured according to project-specific operating requirements and refrigeration system parameters.
     
     Key functions include:

    - Automatic temperature monitoring
    - Continuous frost protection operation
    - Energy-efficient heating control
    - Adjustable operating parameters
    - Integration with monitoring systems where required
    - The intelligent control system helps ensure reliable protection while optimising energy consumption and operational performance.

     
    Sensor technology
     
    Temperature sensors installed within the floor structure continuously monitor critical operating conditions beneath refrigerated areas.
    The sensor system provides accurate temperature feedback to the controller, enabling automatic regulation of heating output according to project design requirements.
    The sensor and control combination supports:

    - Continuous temperature monitoring
    - Reliable frost protection
    - Automatic operation
    - Energy-optimised control
    - Reduced operator intervention
    - Enhanced operational reliability

    Where required, the control system may be integrated into wider facility monitoring and building management systems.
     
     
    Applications
     
    The DEVI Cold Store Frost Protection System is suitable for a wide range of refrigerated and temperature-controlled facilities, including:

    - Cold storage warehouses
    - Refrigerated distribution centres
    - Food processing facilities
    - Frozen food storage facilities
    - Industrial refrigeration plants
    - Supermarket cold rooms
    - Logistics hubs
    - Ice arenas and sports venues
    -Temperature-controlled manufacturing facilities

    The system can also be specified for:

    - Door threshold heating
    - Transition zone condensation protection
    - Door frame and sliding rail frost protection
    - Pipe and drain freeze protection
    - Fire line frost protection
    - Ceiling condensation protection where applicable


    Operational benefits
     
    The DEVI Cold Store Frost Protection System provides the following advantages:

    - Prevention of frost heave and associated structural damage
    - Protection of foundations and floor constructions
    - Improved reliability of refrigerated operations
    - Reduced maintenance and repair requirements
    - Automated temperature control
    - Energy-efficient operation
    - Long-term protection of building assets
    - Compatibility with industrial refrigeration facilities
    - Low maintenance requirements due to the absence of moving mechanical components
    - Enhanced operational continuity and facility uptime

     
    Warranty

    DEVI heating cable products used within cold store frost protection applications are covered by the applicable manufacturer's warranty programme, subject to installation, testing and documentation in accordance with DEVI warranty requirements.
    Warranty registration and installation documentation shall be completed using the DEVI e-Warranty system or other approved documentation methods specified by the manufacturer.
    Warranty terms depend on the selected heating cable product and shall comply with the current manufacturer's warranty conditions.
     
    Approved components
     
    To ensure system performance, safety, compatibility and warranty compliance, only manufacturer-approved DEVI heating cables, sensors, thermostats, connection accessories and control components shall be used throughout the installation.
    The complete solution shall be designed and supplied as an integrated DEVI thermal management system.

     

    Tender evaluation statement

    The DEVI Cold Store Frost Protection System is a purpose-designed electric thermal management solution developed to protect refrigerated facilities against frost heave, structural damage and low-temperature operational risks. By combining proven heating cable technology with dedicated temperature monitoring and control systems, the solution supports long-term structural integrity, reliable cold storage operation, energy-efficient performance and reduced maintenance requirements, making it particularly suitable for industrial and commercial refrigerated environments where operational continuity and asset protection are essential.
  • Scope
     
    The DEVIasphalt™ ice and snow melting system is a permanently installed electric surface heating solution designed specifically for asphalt areas exposed to winter conditions. The system helps prevent the formation of snow and ice on access roads, parking areas, ramps, loading zones, pedestrian pathways and other critical outdoor surfaces, supporting safe and reliable access throughout the winter season.
    By maintaining the pavement surface above freezing conditions when required, the system can significantly reduce dependence on mechanical snow removal and chemical de-icing methods.
     
    Heating cables and Heating mats
     
    The DEVIasphalt™ range consists of heating cables and heating mats specifically engineered for direct installation within asphalt constructions.
    DEVIasphalt™ heating elements are designed for asphalt applications and provide short-term resistance to installation temperatures up to 240°C during asphalt laying. This allows installation directly within the asphalt structure without requiring a protective sand layer above the heating element, helping to reduce installation complexity and construction time.
    Key benefits include:

    - Direct asphalt installation
    - Rapid thermal response due to proximity to the surface
    - Uniform heat distribution
    - Reduced installation complexity
    - Long service life
    - Low maintenance requirements

    The asphalt cover above heating elements shall be a minimum of 50 mm.
    To verify installation quality and maintain warranty eligibility, conductor resistance and insulation resistance measurements shall be performed before, during and after installation in accordance with the manufacturer's instructions.
    Installation shall follow all applicable local electrical regulations and the manufacturer's installation guidelines.
     
    Intelligent control system
     
    The system shall be controlled by the DEVIreg™ 850 IV intelligent controller or equivalent manufacturer-approved control solution.
    The controller supports management of up to two independent heating zones and continuously evaluates environmental conditions using dedicated surface sensors.
    Measured parameters include:

    - Surface temperature
    - Presence of moisture from snow, ice, hail or rain

    Based on these measurements, the controller activates heating only when there is a risk of snow accumulation or ice formation.

    This weather-responsive operation helps optimise energy consumption while maintaining a high level of operational safety and surface availability.
     
    Sensor technology
     
    The ground sensor continuously monitors surface conditions and transmits operating data to the DEVIreg™ 850 IV controller.
    The combination of temperature and moisture measurement enables intelligent heating control, reducing unnecessary operating hours during dry cold weather and improving overall system efficiency.
    The sensor system supports:

    - Reliable detection of winter conditions
    - Automated operation
    - Energy-optimised heating control
    - Reduced operator intervention

    Operational benefits

    The DEVIasphalt™ system provides the following advantages:

    - Improved pedestrian and vehicle safety
    - Continuous access during winter conditions
    - Reduced winter maintenance requirements
    - Reduced use of salt and chemical de-icing agents
    - Automated weather-responsive operation
    - Low maintenance requirements due to the absence of moving mechanical components
    - Long-term operational reliability


    Warranty

    DEVIasphalt™ heating cables and heating mats are covered by a 20-year manufacturer's warranty, subject to installation and documentation in accordance with the manufacturer's warranty requirements.
    Warranty registration and installation documentation shall be completed using the DEVI e-Warranty system or other approved documentation methods specified by the manufacturer.
     
    Approved Components
     
    To ensure system performance, safety, compatibility and warranty compliance, only manufacturer-approved DEVI accessories, sensors and control components shall be used throughout the installation.
     
    Tender evaluation statement
     
    The DEVIasphalt™ system is a purpose-designed asphalt snow and ice melting solution combining durable heating elements with intelligent moisture and temperature-based control. The solution supports safe winter operation, reduced maintenance requirements, optimised energy usage and long-term asset reliability, making it particularly suitable for critical access areas where operational continuity and safety are essential.
  • Surface ice and snow melting systen for outdoor areas
     
    The DEVI electric ice and snow melting system is a fully automated surface heating solution designed to maintain safe and reliable access across outdoor areas exposed to winter conditions. When combined with intelligent moisture and temperature control, the system helps prevent the accumulation of snow and ice on critical surfaces such as parking areas, vehicle ramps, loading zones, access roads and pedestrian walkways.
    The solution supports operational continuity, enhances pedestrian and vehicle safety, and can reduce reliance on mechanical snow removal and chemical de-icing methods. By activating heating only when weather conditions indicate a risk of ice or snow formation, the system provides an energy-optimised approach to winter surface protection.
     
    Heating cables and Heating mats
     
    The system shall utilise DEVI twin-conductor heating cables and heating mats specifically designed for outdoor snow and ice melting applications.
    For effective snow and ice melting performance, the installed heating output shall typically be not less than 250 W/m², subject to local climatic conditions, surface construction and project-specific design requirements.
    DEVI offers the following heating solutions for outdoor applications:

    - DEVIsnow™ heating cables
    - DEVIsafe™ heating cables
    - DEVIsnow™ heating mats

    These products are designed to deliver:

    - Reliable snow and ice melting performance
    - Uniform heat distribution across the protected area
    - High mechanical durability
    - Long service life
    - Low maintenance requirements
    - Flexible installation options for both new-build and refurbishment projects

    The use of pre-assembled heating mats can simplify installation, improve installation consistency and help reduce installation time on selected applications.
    All heating elements shall be installed in accordance with the manufacturer's installation instructions and applicable local electrical regulations.
     
    Quality assurance and Warranty
     
    To ensure installation quality and maintain warranty eligibility, conductor resistance and insulation resistance measurements shall be performed and recorded during installation in accordance with the manufacturer's requirements.
    A 20-year manufacturer's warranty on heating cables and heating mats is available, subject to installation and documentation in accordance with DEVI warranty procedures. Documentation shall be completed using the DEVI e-Warranty system or other approved documentation methods.
     
    Intelligent control system
     
    The snow and ice melting system shall be controlled by the DEVIreg™ 850 IV intelligent controller or an approved equivalent from the manufacturer.
    The DEVIreg™ 850 IV provides:

    - Fully automatic weather-responsive operation
    - Simultaneous control of up to two independent heating zones
    - Continuous temperature and moisture monitoring
    - LED status display and operational feedback
    - Energy-optimised control logic

    By continuously analysing actual surface conditions, the controller activates heating only when necessary to reduce the risk of snow accumulation or ice formation.
    This intelligent operating principle helps minimise unnecessary energy consumption while maintaining a high level of safety and surface availability throughout the winter season.
     
    Moisture and temperature sensors
     
    The system shall include DEVI ground sensors integrated with the control system.
    Each sensor continuously measures:

    - Surface temperature
    - Moisture caused by snow, ice, rain or hail

    Sensor data is transmitted to the DEVIreg™ 850 IV controller, enabling the system to determine when heating is required and when heating can be safely reduced or switched off.
    The combination of temperature and moisture monitoring provides significant operational advantages compared with temperature-only control systems, including:

    - More precise heating activation
    - Reduced unnecessary operating hours
    - Improved energy efficiency
    - Enhanced operational reliability

    Operational benefits
     
    The DEVI ice and snow melting system delivers measurable benefits for facility owners, operators and end users:

    - Improved pedestrian and traffic safety
    - Reduction of slip and fall risks
    - Reliable access during winter conditions
    - Reduced dependence on manual snow clearing operations
    - Reduced use of salt and chemical de-icing products
    - Lower maintenance burden compared with mechanical winter maintenance solutions
    - Automatic operation without continuous operator intervention
    - Long-term reliability with minimal maintenance requirements

    The absence of pumps, boilers, moving mechanical components and fluid management requirements contributes to a simple, robust and low-maintenance system architecture.
     
    Approved components
     
    To ensure safety, performance, compatibility and full warranty compliance, only manufacturer-approved DEVI heating elements, controllers, sensors and accessories shall be used throughout the installation.
     
    Tender evoluation statement 
     
    The DEVI outdoor ice and snow melting solution combines high-performance electric heating technology with intelligent moisture and temperature-based control to provide reliable winter surface protection. The system supports operational continuity, enhances safety, optimises energy consumption and reduces winter maintenance requirements, offering a robust and cost-effective lifecycle solution for critical outdoor infrastructure and access areas.

  • Pipe freeze protection and temperature maintenance system

    Scope

    The DEVI Pipe Freeze Protection System is designed to prevent freezing and maintain the operational availability of piping systems exposed to low ambient temperatures. The solution is suitable for protection of:

    - Potable water systems
    - Fresh water pipelines
    - Wastewater systems
    - Cooling water systems
    - Supply water networks
    - Fire sprinkler systems
    - Industrial process piping

    The system provides reliable protection for pipes installed outdoors or within unheated areas where ambient temperatures may fall below freezing, potentially causing ice formation, flow interruption, equipment damage and costly repairs.
    When correctly designed and controlled, the system helps maintain uninterrupted service, protects critical infrastructure and reduces the risk of freeze-related failures.
     
    Electric heating cables
     
    DEVI provides a comprehensive range of electric heat tracing solutions suitable for both external and internal pipe installation.
    The heating system shall be selected based on:

    - Pipe diameter
    - Pipe material
    - Insulation thickness
    - Design ambient temperature
    - Required maintenance temperature
    - Fluid characteristics
    - Regulatory requirements

    External pipe installation

    For external heat tracing applications, the following products may be utilised:

    - DEVIflex™ constant wattage heating cables
    - DEVIpipeguard™ self-limiting heating cables

    These products provide:

    - Freeze protection of insulated pipework
    - Flexible installation on complex piping geometries
    - Suitable solutions for both commercial and industrial applications
    - Reliable operation during prolonged low-temperature periods

    Self-limiting heating cables automatically adjust their heat output in response to local temperature conditions, reducing overheating risk and simplifying installation on varying pipe diameters and layouts.
     
    Internal pipe installation
     
    Where installation inside the pipe is required, the following solutions are available:

    - DEVIaqua™ constant wattage heating cables
    - DEVIpipeheat™ 10 V3 self-limiting heating cables

    These systems are particularly suitable for applications where external installation is impractical or inaccessible.
    Applications may include:

    - Drinking water pipelines
    - Service water lines
    - Remote installations
    - Existing pipe systems requiring retrofit freeze protection

    Internal heating solutions shall be installed in accordance with applicable drinking water regulations, national standards and manufacturer requirements.
     
    Fire sprinkler applications
     
    For fire protection systems, DEVIpipeguard™ LSZH (Low Smoke Zero Halogen) self-limiting heating cable is available.
    Key benefits include:

    - Reduced smoke generation in fire conditions
    - Halogen-free construction
    - Suitable for safety-critical installations
    - Compatibility with sprinkler freeze protection applications

    The LSZH design supports enhanced fire safety requirements commonly specified in commercial, public and infrastructure projects.
     
    Design and performance requirements
     
    The heat tracing system shall be designed in accordance with:

    - Minimum ambient design temperatures
    - Required pipe maintenance temperature
    - Insulation specification
    - Heat loss calculations
    - Applicable electrical and fire safety regulations

    The installed heat output shall provide sufficient thermal energy to compensate for heat losses while avoiding excessive operating temperatures.
    Proper design is critical to ensuring:

    - Continuous service availability
    - Freeze protection effectiveness
    - Energy-efficient operation
    - Long-term system reliability


    Quality assurance and Warranty

    All heating cables shall be installed, tested and commissioned in accordance with DEVI installation instructions and applicable local regulations.
    Quality control procedures shall include:

    - Conductor resistance measurements
    - Insulation resistance testing
    - Verification of sensor installation
    - Documentation of installation records

    A 20-year manufacturer's warranty is available for DEVI resistive heating cables, subject to compliance with installation and documentation requirements.
    For self-limiting heating cables, product warranties of 5 or 10 years apply depending on the product type and warranty programme.
    Installation documentation shall be completed through the DEVI e-Warranty platform or other approved documentation procedures.
     
    Thermostats and control systems
     
    The heat tracing system shall be controlled using electronic temperature control devices.
    Temperature control is recommended for both:

    - Constant wattage heating cables
    - Self-limiting heating cables

    Proper control helps:
    - Reduce unnecessary energy consumption
    - Prevent overheating
    - Optimise equipment lifespan
    - Improve overall system efficiency
     
    Single pipe application 
     
    For individual pipe circuits, the following thermostats are recommended:

    - DEVIreg™ 330
    - DEVIreg™ 610

    These controllers provide reliable temperature regulation and simple operation for standalone heat tracing systems.
     
    Multi-circuit and industrial applications
     
    For larger pipe networks and distributed heat tracing systems, DEVIreg™ Multi is recommended.
    Key features include:

    - Multi-channel electronic control
    - DIN rail mounting
    - Individual channel configuration
    - Temperature sensor control
    - Time-proportional power regulation
    - Manual and automatic operating modes
    - Adjustable control parameters

    The controller supports flexible management of multiple pipe circuits while reducing control infrastructure complexity.
     
    Building management system integration
     
    One of the key advantages of the DEVIreg™ Multi platform is its integrated Modbus RS485 opto-isolated communication interface.
    This functionality enables:

    - Building Management System (BMS) integration
    - Centralised monitoring
    - Alarm management
    - Remote supervision
    - Improved facility management capabilities

    The capability is particularly valuable for commercial buildings, industrial facilities, hospitals, logistics centres and critical infrastructure projects.
     
    Accessories
     
    DEVIconnecto™ connection system
    DEVIconnecto™ provides a manufacturer-approved connection solution for DEVI self-limiting heating cables.
    Benefits include:

    - Simplified installation procedures
    - Reduced installation time
    Consistent connection quality
    - Improved installation reliability

    Installation typically requires only basic cable preparation tools, supporting efficient on-site assembly.
    Important: DEVIconnecto™ components are not waterproof and shall be installed only in protected environments or within approved enclosures.
     
    Operational benefits
     
    The DEVI Pipe freeze protection system provides:

    - Reliable freeze protection for critical piping assets
    - Reduced risk of burst pipes and water damage
    - Improved operational continuity during winter conditions
    - Protection of business-critical water systems
    - Reduced emergency maintenance interventions
    - Automated operation through intelligent temperature control
    - Low maintenance requirements
    - Long service life
    - Scalability from single pipe runs to large industrial networks

    Compared with reactive maintenance approaches, electric heat tracing provides proactive freeze protection and helps minimise operational disruption and repair costs.
     
    Risk mitigation benefits
     
    The system helps reduce exposure to:
    Risk Mitigation Provided
    Pipe freezing Continuous freeze protection
    Water service interruption Maintains pipe functionality
    Property damage from burst pipes Prevents ice formation
    Sprinkler system impairment Maintains fire protection readiness
    Emergency repair costs Reduces likelihood of freeze failures
    Winter operational disruption Supports continuous operation
     
     
    Approved components
     
    To ensure safety, compatibility, performance and warranty compliance, only manufacturer-approved DEVI heating cables, thermostats, sensors, connection systems and accessories shall be used throughout the installation.
     
    Tender evaluation statement
     
    The DEVI Pipe Freeze Protection System combines proven electric heat tracing technology, intelligent temperature control and scalable system architecture to provide reliable freeze protection for water, wastewater, sprinkler and industrial piping applications. The solution supports operational continuity, risk reduction, energy-efficient operation and long-term asset protection while offering flexible installation options for both new-build and retrofit projects.
     
     
     
     

  • Roof and gutter ice and snow melting system

    Scope

    The DEVI Roof and Gutter Ice & Snow Melting System is designed to prevent the accumulation of ice and snow on roofs, roof edges, gutters, valleys and downpipes. The system helps maintain free drainage of meltwater during winter conditions, reducing the risk of ice dams, blocked drainage systems and damage to building structures.
    The solution is suitable for virtually all roof construction types and is commonly applied to:

    - Pitched roofs
    - Flat roofs
    - Roof edges
    - Gutters and downpipes
    - Roof valleys
    - Commercial buildings
    - Residential buildings
    - Public infrastructure facilities

    By ensuring continuous meltwater drainage, the system reduces the likelihood of ice-related structural damage while improving building safety and operational reliability during winter conditions.
     
    Electric heating cables
     
    The heating system shall utilise DEVI heating cables specifically designed for outdoor snow and ice melting applications.
    Cable selection shall be based on:

    - Roof construction type
    - Gutter and downpipe dimensions
    - Local climatic conditions
    - Snow and ice exposure levels
    - Vegetation exposure
    - Maintenance accessibility

    Resistive heating cable solutions

    For roof edges, roof valleys, flat roof surfaces, gutters and downpipes where debris accumulation is limited, the following products are recommended:

    - DEVIsnow™ heating cable
    - DEVIsafe™ heating cable

    These twin-conductor resistive heating cables are specifically designed for snow and ice melting applications and provide:

    - High UV resistance
    - Reliable long-term outdoor performance
    - Uniform heat output
    - Simplified installation through factory-terminated cable sets
    - Compatibility with both 230 V and 400 V systems

    The cables comply with IEC 60800 requirements and are supplied with integrated cold leads to support safe and efficient installation.
    Applications include:

    - Residential roofs
    - Commercial buildings
    - Flat roof drainage systems
    - Roof valleys
    - Standard gutter systems


    Self-limiting heating cable solutions

    For installations exposed to high levels of organic debris, such as leaves, twigs and other insulating materials, the recommended solution is:

    - DEVIiceguard™ Self-Limiting Heating Cable

    This solution is particularly suitable for:

    - Gutters adjacent to trees
    - Downpipes in heavily vegetated areas
    - Roof drainage systems subject to debris accumulation

    Unlike constant-output cables, DEVIiceguard™ automatically adjusts heat output based on local temperature conditions.
    Key advantages include:

    - Reduced overheating risk
    - Improved operational safety
    - Flexible cut-to-length installation
    - High UV resistance
    - Simplified adaptation to complex gutter geometries

    The self-limiting technology is particularly beneficial in applications where debris may create localised insulation around portions of the heating cable.
     
    Design and performance requirements
     
    The roof de-icing system shall be designed to ensure continuous drainage of meltwater from heated areas.
    The system objective is not to melt all snow from the roof surface but to:

    - Maintain drainage paths
    - Prevent blockages in gutters and downpipes
    - Reduce formation of dangerous ice accumulations
    - Minimise the risk of ice dam formation
    - Protect building structures from freeze-thaw damage

    Heating cable layout and installed capacity shall be selected according to manufacturer guidelines and project-specific environmental conditions.
     
    Quality assurance and Warranty
     
    All heating elements shall be installed and tested in accordance with DEVI installation instructions and applicable electrical regulations.
    Installation procedures shall include:

    - Conductor resistance measurements
    - Insulation resistance testing
    - Verification of sensor installation
    - Complete installation documentation

    Warranty coverage includes:

    Product Type Warranty
    Resistive Heating Cables 20-year manufacturer's warranty
    Self-Limiting Heating Cables 5-year manufacturer's product warranty
     
    Warranty eligibility is subject to compliance with installation and documentation requirements through the DEVI e-Warranty system or approved alternative documentation procedures.
     
    Intelligent control system
     
    The roof and gutter de-icing system shall be controlled using the DEVIreg™ 850 IV intelligent controller or approved manufacturer equivalent.
    Key features include:

    - Simultaneous control of up to two independent heating zones
    - Continuous moisture and temperature monitoring
    - LED display and operational status indication
    - Weather-responsive automatic operation
    - Intelligent heating control based on actual environmental conditions

    Unlike temperature-only control systems, the controller evaluates both environmental temperature and the presence of moisture before activating heating.
    This operating principle helps:

    - Reduce unnecessary energy consumption
    - Optimise operating hours
    - Improve operational efficiency
    - Maintain reliable ice prevention performance

    Moisture and temperature sensors

    The DEVIreg™ 850 IV system incorporates specialised roof sensors that continuously monitor:

    - Surface temperature
    - Moisture from snow
    - Moisture from ice
    - Moisture from hail
    - Moisture from rain

    Sensor data is transmitted directly to the controller, enabling automatic optimisation of heating operation.
    The combination of moisture and temperature sensing provides significant advantages over conventional temperature-only systems by activating heating only when actual precipitation and freezing conditions occur.
    This contributes to:

    - Improved energy efficiency
    - Reduced operating costs
    - Increased system responsiveness
    - Enhanced reliability of ice prevention

    Accessories

    DEVIconnecto™

    DEVIconnecto™ provides a manufacturer-approved connection platform for DEVI self-limiting heating cable systems.
    Benefits include:

    - Simplified cable connection procedures
    - Reduced installation time
    - Reliable electrical connections
    - Standardised installation quality

    Installation requires only basic cable preparation tools, supporting efficient on-site assembly and maintenance activities.
    Important Installation Requirement
    DEVIconnecto™ components are not waterproof and shall therefore be installed only:

    - Within approved enclosures
    In protected environments
    - Away from direct exposure to weather conditions

    Operational benefits

    The DEVI Roof and Gutter Ice & Snow Melting System provides:

    - Reliable meltwater drainage throughout winter
    - Reduced risk of ice dams
    - Protection of gutters and downpipes
    - Reduced risk of structural water damage
    - Reduced formation of hazardous icicles
    - Enhanced public and occupant safety
    - Reduced winter maintenance requirements
    - Automated weather-responsive operation
    - Long-term operational reliability

    The system contributes to protecting building assets while reducing emergency maintenance interventions and winter-related operational disruptions.
     
    Risk mitigation benefits
     
    Risk Mitigation Provided
    Ice dam formation Maintains drainage channels
    Blocked gutters Continuous meltwater flow
    Frozen downpipes Active freeze prevention
    Facade damage Reduced overflow and ice build-up
    Falling icicles Reduced ice accumulation
    Emergency maintenance costs Preventive operation
    Property damage Improved roof drainage performance
     
     
    Approved components 
     
    To ensure safety, compatibility, performance and warranty compliance, only manufacturer-approved DEVI heating cables, controllers, sensors, connection kits and accessories shall be used throughout the installation.
     
    Competitive differentiation
     
    Compared with conventional timer-controlled systems, the DEVI solution offers:

    - Moisture and temperature-based intelligent control
    - Two-zone independent operation
    - Reduced unnecessary operating hours
    - High UV-resistant cable technology
    - Dedicated solutions for debris-prone gutter systems
    - Long-term manufacturer warranty support

    These features contribute to lower lifecycle costs and improved operational reliability.
     
    Tender evaluation statement
     
    The DEVI Roof and gutter ice & snow melting system combines proven heating cable technology with intelligent moisture and temperature-based control to maintain reliable meltwater drainage and prevent ice accumulation in critical roof drainage areas. The solution supports building protection, operational continuity, energy-efficient operation and long-term asset reliability, making it suitable for residential, commercial, industrial and public-sector projects where winter safety and infrastructure protection are essential.
     

  • Vineyards frost protection system

    Scope

    The DEVI Vineyard Frost Protection System is designed to reduce the risk of crop damage caused by late spring frost events during critical vine development stages. The solution provides controlled electric heating along vineyard rows to help protect emerging buds, shoots and inflorescences from freezing temperatures that may occur during early spring growth periods.
    Late spring frosts, typically occurring during bud break and early vegetative development, represent one of the most significant risks to vineyard productivity. Frost events during this period can result in substantial reductions in yield, crop quality and overall vineyard profitability.
    The DEVI solution is intended specifically for spring frost protection during the active growing season and shall not be considered a substitute for winter hardiness protection of dormant vines.
     
    Application objective
     
    The system is designed to:

    - Mitigate the impact of late spring frost events
    - Protect developing buds and young shoots
    - Support preservation of crop yield potential
    - Improve vineyard operational resilience
    - Reduce the financial impact of frost-related crop losses
    - Enable targeted frost protection of high-value vineyards

    The system provides localised heat where frost damage risk is highest, supporting more stable production outcomes during vulnerable growth stages.
     
    Electric heating cables
     
    The vineyard frost protection system shall utilise DEVI outdoor heating cables specifically designed for long-term external installation in agricultural environments.
    Recommended products include:

    - DEVIsafe™ heating cable
    - DEVIsnow™ heating cable
    - DEVIprotect™ project-specific cable solutions

    These heating elements feature:

    - UV-resistant outer sheaths
    - High mechanical durability
    - Proven outdoor performance
    - Robust electrical protection
    - Suitability for long-term vineyard installations


    Factory-terminated cable solutions

    DEVIsafe™ and DEVIsnow™ are available as factory-terminated heating cable assemblies complete with:

    - Cold lead connection cable
    - Factory-sealed joints
    - End terminations
    - Installation-ready construction

    Benefits include:

    - Simplified installation
    - Reduced commissioning risk
    - Consistent quality control
    - Improved installation reliability

    Customised vineyard installations

    For larger vineyard developments or non-standard layouts, drum-supplied products may be utilised, including:

    - DEVIsnow™ drum goods
    - DEVIprotect™ project-specific solutions

    These products provide greater design flexibility and support optimisation of cable layouts according to:

    - Row length
    - Vineyard geometry
    - Power availability
    - Frost protection strategy

    System design should be performed based on site-specific climatic conditions, vineyard spacing and risk assessment.
     
    Design requirements
     
    The frost protection system shall be designed according to:

    - Vineyard location
    - Historical frost exposure
    - Topography
    - Row spacing
    - Vine variety

    Electrical infrastructure availability

    The heating capacity and control strategy shall provide effective protection during critical spring frost conditions while maintaining efficient energy consumption.
    The objective is not continuous heating but controlled intervention during identified frost risk periods.
     
    Quality assurance and Warranty
     
    All heating elements shall be installed and tested in accordance with DEVI installation instructions and applicable national electrical regulations.
    Quality assurance procedures shall include:

    - Conductor resistance measurements
    - Insulation resistance testing
    - Verification of cable positioning
    - Installation documentation

    A 20-year manufacturer's warranty is available for resistive heating cables, subject to compliance with installation and documentation requirements.
    Warranty registration shall be completed through the DEVI e-Warranty platform or approved alternative documentation procedures.
     
    Thermostats and control systems
     
    The vineyard frost protection system shall be controlled through automatic temperature-monitoring equipment to ensure timely activation during frost risk conditions.
    The control solution shall:

    - Monitor ambient conditions
    - Activate heating when frost thresholds are reached
    - Minimise unnecessary energy consumption
    - Support reliable crop protection

    Standard temperature control

    For typical vineyard installations, DEVIreg™ 330 thermostats are recommended.
    Available operating ranges include:

    - DEVIreg™ 330 (-10°C to +10°C)
    - DEVIreg™ 330 (+5°C to +45°C)

    These controllers provide reliable temperature-based activation suitable for agricultural frost protection applications.
    For heating loads exceeding design switching capacities, appropriately sized contactors shall be incorporated into the control circuit.
     
    Sensor requirements
     
    Temperature sensors shall be installed according to project-specific conditions.
    As a minimum requirement:

    - One temperature sensor shall be installed for each independently controlled heating zone.

    A control zone may comprise:

    - A single vineyard row
    - Multiple vineyard rows
    - A vineyard block

    depending on site size, topography and frost distribution characteristics.
    Sensor placement shall ensure accurate representation of local frost conditions.
     
    Advanced multi-zone control
     
    For larger vineyard installations, DEVIreg™ Multi is recommended.
    Key features include:

    - Seven independently configurable control channels
    - DIN rail installation
    - Individual zone management
    - Temperature sensor operation
    - Time-proportional power regulation
    - Manual override capability
    - Programmable operating strategies

    The controller enables precise management of multiple vineyard zones, improving operational flexibility and reducing control infrastructure requirements.
     
    Remote monitoring and integration
     
    DEVIreg™ Multi includes an integrated Modbus RS485 opto-isolated communication interface, enabling:

    - Building Management System (BMS) integration
    - Remote status monitoring
    - Centralised control
    - Alarm notification
    - Operational reporting

    For agricultural operations managing multiple vineyard areas, remote monitoring can improve system oversight and operational efficiency during critical frost events.
     
    Operational benefits
     
    The DEVI Vineyard Frost Protection System delivers the following benefits:

    - Reduced exposure to spring frost losses
    - Protection of high-value crops during critical growth stages
    - Improved yield stability
    - Automated operation based on measured temperatures
    - Reduced need for manual frost response measures
    - Low maintenance requirements
    - Long operational lifetime
    - Scalable design suitable for small and large vineyards

    The system supports proactive crop protection while reducing dependence on labour-intensive frost mitigation methods.
     
    Commercial value proposition
     
    Compared with the financial consequences of frost-damaged harvests, proactive frost protection can provide significant economic value through:

    - Preservation of grape yield
    - Protection of crop quality
    - Reduced seasonal revenue volatility
    - Improved production consistency
    - Better vineyard asset utilisation

    For premium wine producers and commercial vineyards, protecting a single harvest may justify a significant proportion of the system investment.
    Project-specific return-on-investment analysis should consider:

    - Vineyard area (ha)
    - Historical frost frequency
    - Crop value per hectare
    - Expected yield
    - Local electricity costs

    Risk mitigation benefits

    Risk Mitigation Provided
    Late spring frost Active temperature protection
    Bud damage Reduced exposure to freezing temperatures
    Yield reduction Improved crop preservation
    Revenue loss Protection of harvest potential
    Emergency manual intervention Automated operation
    Variable production outcomes Increased crop consistency
     
     
    Approved components 
     
    To ensure safety, performance, operational reliability and warranty compliance, only manufacturer-approved DEVI heating cables, thermostats, sensors and accessories shall be used throughout the installation.
     
    Competitive differentiation
     
    Compared with traditional frost protection methods, the DEVI solution offers:

    - Fully automated operation
    - Targeted protection of critical vine zones
    - Low maintenance requirements
    - Long design life
    - Precise temperature-based activation
    - Multi-zone management capability
    - Remote monitoring potential through Modbus integration
    - Reduced operational labour requirements


    Tender evaluation statement

    The DEVI Vineyard Frost Protection System provides an automated electric heating solution designed to protect grapevines during critical spring frost events. Combining durable UV-resistant heating cables with intelligent temperature-based control, the system supports crop protection, yield preservation and operational reliability while reducing the risks associated with late-season frost damage. The solution is suitable for both commercial vineyards and premium wine production facilities where harvest protection and production consistency are strategic priorities.