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LEO FS

Product catalog summary

General Characteristics: The LEO FS and KMFS fan heaters are designed for indoor use, suitable for heating small to medium-sized buildings. They feature a durable ABS plastic casing and anodized aluminum air blades, making them ideal for spaces like restaurants and shops. The KMFS model includes a mixing chamber for fresh air supply, functioning as a simple mechanical ventilation system.

Construction and Technical Data: Both models are equipped with axial fans, with the FS M and KMFS M variants featuring energy-efficient EC motors. The units offer a maximum air flow of 1750 m³/h for FS and 1150 m³/h for KMFS, with heating capacities ranging from 5 to 19 kW. They are designed for vertical wall installation and can operate at ambient temperatures up to 50°C.

Air Flow and Temperature Regulation: The units provide stepless air flow regulation, with the FS M and KMFS M models controlled via a 0-10V signal. The air temperature rise is dependent on the inlet air and water temperatures, with a maximum rise of 37°C.

Installation and Accessories: The heaters come with an integrated installation console for easy setup. Accessories include control panels (VNTLCD, VNT20), room thermostats, and fan speed regulators. The units can be connected to a Building Management System (BMS) via MODBUS protocol.

Control Systems: The LEO FS and KMFS heaters offer both modulated and ON/OFF control systems. The modulated system adjusts air flow and heating capacity based on temperature differences, while the ON/OFF system uses a room thermostat for basic control. EC motors in the modulated system provide significant energy savings.

BMS Programming: The VNTLCD control panel allows integration with BMS, supporting up to 31 addresses and various parameters for temperature and fan speed control.

Specifications: The document provides detailed specifications for various components used in ventilation and heating systems. Key components include TR and TRd regulators, LEO FS and KMFS control systems, UVO roof fans, and various accessories like roof bases and silencers. The TR regulator supports up to 3 units, while the TRd supports up to 6 units. Both have a maximum wire diameter of 2.5 mm². The UVO roof fans are designed for room ventilation, with models UVO H1.4 and UVO H3.0 offering different air flow capacities and power consumption levels.

Procedures: The document outlines connection diagrams for different control systems, including LEO FS modulated control systems and ON/OFF systems. It details the wiring requirements and power supply specifications necessary for proper installation and operation.

Standards and Norms: Protection degrees for various components are specified, such as IP54 for control boards and IP20 for fan speed regulators. Operating temperature ranges and power supply requirements are also provided to ensure compliance with safety and operational standards.

Recommendations: Recommendations include selecting the appropriate control system for fan heaters, either ON/OFF or Modulated Control System, for effective operation. The use of buffers is suggested to enhance control capabilities and provide additional functionalities like warning lights for system malfunctions.

Data Summary: The document includes tables and diagrams illustrating air flow characteristics, power consumption, and acoustic pressure levels for different system configurations. It provides detailed technical data for air flow regulation, heating capacities, and the impact of various settings on system performance.

Heating Capacities Overview: This document provides detailed specifications and data on heating capacities for various air and water temperature settings. It includes tables with key parameters such as air flow (V), heating capacity (PT), inlet and outlet air temperatures (Tp1, Tp2), inlet and outlet water temperatures (Tw1, Tw2), water flow rate (Qw), and water pressure drop (Δpw) in the heat exchanger.

Key Sections:

Specifications: The document outlines the heating capacities at different temperature settings, with detailed data for each scenario. It includes air flow regulation options using TR/TRd regulators or VNTLCD/VNT20 control panels.
Procedures: Instructions for setting air flow to 100% using the VNTLCD/VNT20 control panel are provided, with specific data for different water temperature settings (e.g., 90/70°C, 80/60°C, etc.).
Limitations: Certain configurations result in too low outlet air temperatures, which are marked as not allowed.
Recommendations: For other water temperature settings not covered in the document, it is advised to contact the Sales Office for further guidance.

Data Summary: The tables present data for various temperature settings, showing how changes in inlet and outlet temperatures affect heating capacity and water flow. Key observations include:

Higher inlet water temperatures generally result in higher heating capacities.
Water pressure drop varies with different temperature settings, impacting the efficiency of the heat exchanger.

Conclusion: This document serves as a comprehensive guide for understanding and optimizing heating capacities in different environmental conditions. It emphasizes the importance of selecting appropriate temperature settings to ensure efficient operation.

Catalog excerpts

LEO KMFS VENTILATION UNITS

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• Horizontal range of air stream 6 • LEO KMFS control system 16 • LEO KMFS connection diagrams 19 • Air flow regulation - technical data 26 • Heating capacity tables

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GENERAL CHARACTERISTICS Heating capacity (kW) Air flow (m³/h) Weight (kg) Colour Casing KMFS 5–15 230–1150 32,0–35,0 grey antistatic ABS LEO FS | KMFS fan heaters are designed to operate indoors. They can be used for heating the buildings with small and medium cubic measure. Casing made of durable plastic, air blades made of anodized aluminium and modern design enable to install them in representative rooms like: restaurants, pubs, shops etc. is equipped with mixing chamber, which enables to supply the fresh air into the room. It is the simpliest mechanical ventilation system. There are two types...

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CASING Is made of durable plastic - ABS. It fully covers all of the water and electrical connections, which makes the unit very aesthetic. EASY INSTALLATION Light construction and integrated installation console provide easy and quick installation of the unit. There is no need to use any additional brackets or supporting structures. FAN LEO FS type M units are equipped with energy-efficient EC fan, which power consumption is only 57,5W. This type of fan ensures big savings during unit’s operation. REGULATION OF AIR VOLUME SUPPLY LEO KMFS heating and ventilation unit ensures mechanical ventilations...

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TECHNICAL DATA FS S Fan Max. air flow [m3/h] Power supply [V/Hz] Max. current consumption [A] Max. power consumption [W] IP / Insulation class Max. acoustic pressure level* [dB(A)] Max. air stream range** [m] Heat exchanger Nominal heating capacity***[kW] Air temperature rise (ΔT)*** [oC] Max. water temperature [oC] Max. water pressure [MPa] Connection [”] Casing Colour Air filter Place of installation Max. ambient temperature [oC] Installation position Unit weight [kg] Weight of unit filled with water [kg] LEO FS|KMFS S/V - axial, single phase, AC LEO FS|KMFS M - axial with electronically commutated...

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Air temperature rise at unit’s maximum air flow. Inlet air temperature 0°C. Tw1/Tw2 - inlet/outlet water temperature. HORIZONTAL RANGE OF AIR STREAM Horizontal range of isothermal stream (at velocity boundary equal to 0,5 m/s).

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KMFS Operation point of the unit.

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INTEGRATED INSTALLATION CONSOLE LEO FS and KMFS have integrated installation console. There is no need to use any additional holders. Wall-mounted air inlet is equipped with galvanized net and fixed shutter, which protect air inlet against rain, snow etc. INSTALLATION OPTIONS

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INSTALLATION TIPS Steady air circulation should be provided in the entire room. Correctly installed heaters should direct the air to the occupied zone. Heaters installed on the opposite walls should be overlapped. Air flow stream should not be limited. Fresh air can be delivered to the unit by the straight air ducts. Air inlet should not be limited.

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MODULATED CONTROL SYSTEM VNT20 control panel with built-in room thermostat SRQ2d two-way valves with actuator SRQ3d three-way valves with actuator VNTLCD control panel with weekly programmer and built-in room thermostat TEMPERATURE DIAGRAM It is is energy-efficient heating system prepared for buildings with medium and big cubic measure. Airflow and heating capacity are automatically controlled depending on actual temperature - air flow is adjusted to current heat demand. Control panel (VNTLCD or VNT20) automatically and stepless change the speed of the fan according to difference between air...

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ON/OFF CONTROL SYSTEM RE room thermostat with weekly programmer SRQ2d two-way valves with actuator TR 5-step fan speed regulator TRd 5-step fan speed regulator S/V SRQ3d three-way valves with actuator It is the simplest ON/OFF regulation system. Fan heater is controlled by room thermostat, which turns on the unit (or/and opens the valve) when measured temperature drops below set temperature. Air flow is regulated by transformer regulator. FEATURES: Low thermal inertia. Low investment costs. Easy to use. Independent regulation of every single unit. Gradual regulation of air flow. TEMPERATURE DIAGRAM...

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BMS PROGRAMMING VNTLCD control panel enables to connect the system to BMS (Building Management System). It is equipped with communication protocol MODBUS in RTU mode. Communication takes place at a speed of {4800|9600|19200|38400} (without parity control, 1 bit of stop). It is possible to set up to 31 addresses. Temperature of internal sensor Temperature input to the regulator Status of heating/cooling relay Output voltage on AOUT contact Current speed of fans Temperature of antifreeze protection Status of selected master sensor 0 - internal sensor 1 - external sensor Status of control 0 - manual...

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Parameter TZAD_MANUAL TZAD_AUTO VSPEED_HI VSPEED_LO ALARM_ID Parameter range Scale factor Set temperature in manual mode Set temperature in automatic mode Upper limit of fans speed Lower limit of fans speed Unit’s internal error alarms (broken solder joints, communication errors) Correction of fans speed Temperature correction of external sensor Status of temperature regulator setting Fans speed in manual mode Fans speed in automatic mode Fans speed when antifreeze protection is active VSPEED_MANUAL VSPEED_AUTO VSPEED_AF Software version Upper limit of temperature hysteresis.* Lower limit of...

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LEO FS CONTROL SYSTEM COMPONENTS Power supply: 230 V 50 Hz Protection degree: IP20 Temperature adjustment range: +5 … +35°C Operating temperature range: -10 … +60°C Output control signal: analog 0-10 V Way of control: buttons, LED display Velocity control range: 0-100% Temperature sensor: built-in (optional PT-1000) Contacts load: inductive 3 A, resistance 8 A Dimensions (HxWxL): 70x120x25 mm Max. wire diameter: 2mm2 VNT20 control panel with built-in room thermostat additional equipment Technical data Power supply: 230 V 50 Hz Protection degree: IP20 Temperature adjustment range: +5 … +50°C Operating...

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LEO FS

LEO FS

Catalog excerpts

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