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- Page 1 Use, Installation and Maintenance Manual MODULATING WARM AIR HEATER LRN - RAPID PRO AND CONDENSING WARM AIR HEATER LKN - KONDENSA TRANSLATION OF ORIGINAL Manual LRN - RAPID PRO e LKN - KONDENSA cod. HG0142.01GB ed.A-2403...
- Page 2 20042 Pessano con Bornago (MI) Via Isonzo, 1 Tel +39.02.9596931 r.a. Fax +39.02.95742758 Internet: http://www.apengroup.com Il presente documento dichiara che la macchina: With this document we declare that the unit: Modello: Generatore d’aria calda LRN, LKN, LRN-00C0, LRN-00Z0, LKN-00C0, LKN-00X0, LKN-...
- Page 3 Via Isonzo, 1 - ITALY Tel +39.02.9596931 r.a. Fax +39.02.95742758 Internet: http://www.apengroup.com With this document we declare that the unit: Model: Warm Air Heater LRN, LKN, LRN-00C0, LRN-00Z0, LKN-00C0, LKN-00X0, LKN-00Z0 has been designed and manufactured in compliance with the prescriptions of the following Regulations: •...
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Page 4: Table Of Contents
LKN and LRN WARM AIR HEATER TABLE OF CONTENTS 1. GENERAL CAUTIONS ................................5 2. SAFETY-RELATED WARNINGS .............................5 2.1. Fuel ........................................5 2.2. Gas Leaks ......................................5 2.3. Power supply ......................................6 2.4. Use ......................................... 6 2.5. Maintenance ......................................6 2.6. Transport and Handling ..................................6 2.7. -
Page 5: General Cautions
37/2007 (ex 46/90) the unit; • move away from the unit For more information, visit our website www.apengroup.com or • call for qualified staff. contact Apen Group directly. • call the Fire Brigade. -
Page 6: Power Supply
LKN and LRN WARM AIR HEATER 2.3. Power supply If the heater is faulty and/or incorrectly operating, switch it off and do not attempt to repair it yourself, but contact our local The heater must be correctly connected to an effective earthing Technical Service Centre. -
Page 7: Unpacking
LKN and LRN WARM AIR HEATER 2.7. Unpacking INFORMATION FOR DISPOSAL valid abroad (EU COUNTRIES except Italy). The unpacking operation must be carried out by using suitable The European Directive 2012/19/EC shall be implemented in tools or safety devices where required. Recovered packaging every EU member state. -
Page 8: Technical Features
LKN and LRN WARM AIR HEATER TECHNICAL FEATURES Inherent Safety The efficiency increase at minimum power is achieved by using The LRN-RAPID PRO and LKN-KONDENSA series modulating a sophisticated air/gas mixing technique and by regulating at warm air heaters have been designed to heat industrial and the same time the combustion air flow and the fuel gas flow. -
Page 9: Technical Data
LKN and LRN WARM AIR HEATER 3.1. Technical Data Model LRN018 LRN028 LRN035 LRN045 Type of equipment B23P - C13 - C33 - C53 - C63 EC approval PIN. 0476DN1714 NOx class [EN17082:2019] Type of fuel Gaseous Heater Performance Burner heat output (Hi) 10.0 17.4 15.6... - Page 10 LKN and LRN WARM AIR HEATER LKN035 Model LKN020 LKN035-00X0 Type of equipment B23P - C13 - C33 - C53 - C63 EC approval PIN. 0476DN1714 NOx class [EN17082:2019] Type of fuel Gaseous Heater Performance Burner heat output (Hi) 17.7 34.9 Useful heat output [P 16.9...
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Page 11: Technical Data Of Centrifugal Models
LKN and LRN WARM AIR HEATER 3.2. Technical data of centrifugal models LKN035-00C0 LRN035-00C0 Model LKN035-00Z0 LRN035-00Z0 Type of equipment B23P - C13 - C33 - C53 - C63 EC approval PIN. 0476DN1714 NOx class [EN17082:2019] Type of fuel Gaseous Heater Performance See LKN035 Burner heat output (Hi) - Page 12 LKN and LRN WARM AIR HEATER Following is a graph reading example: Model LKN035-00C0 39,0 Available pressure: 210 Pa 37,0 Air flow rate: 3400 m ΔT: 30°C 35,0 33,0 31,0 29,0 27,0 25,0 2700 2800 2900 3000 3100 3200 3300 3400 3500 3600 3700 Air Flow[m...
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Page 13: Regulation (Eu) 2016/2281
LKN and LRN WARM AIR HEATER 3.3. REGULATION (EU) 2016/2281 Product Information in accordance with Annex 2 point 5 a) Model: See table Warm air heaters B1 [yes/no]: Warm air heaters C2 [yes/no]: Warm air heaters C4 [yes/no]: Type of fuel Gaseous [gaseous/liquid/electricity]: Consumption of... -
Page 14: Noise
LKN and LRN WARM AIR HEATER 3.4. Noise LRN018 LRN018 Sound power The sound power of a source (energy emitted per unit time) is a characteristic of the same source and does not depend on the 59,0 54,8 51,9 environment in which the sound is emitted: this measurement 50,2 49,9 48,7... -
Page 15: Air Flow Performance
LKN and LRN WARM AIR HEATER 3.5. Air flow performance The air flow range, or air throw, is the distance reached by the air jet before its speed decreases and equals the reference speed, assumed to be 0.2 m/s. The throw depends on the speed of the air leaving the heater, which in turn depends on the air flow rate and on the section of the heater air passage. -
Page 16: Dimensions
HG0142.00_C2_001 HG0142.00_C2_001 LKN and LRN WARM AIR HEATER 3.6. Dimensions HG0142.00_C2_001 HG0142.00_C2_001 HG0142.00_C2_001 HG0142.00_C2_001 HG0142.00_C2_001 HG0142.00_C2_007 HG0142.00_C2_007 HG0142.00_C2_001 Mod. Rotating Fixed Overall dimensions Louvre LRN and LKN shelf shelf HG0142.00_C2_007 HG0142.00_C2_007 [mm] IS IS ID ID LRN018 LRN028 LKN020 LRN035 LRN045 LKN035 LRN035-00C0... - Page 17 LKN and LRN WARM AIR HEATER HG0142.00_C2_001 HG0142.00_C2_001 HG0142.00_C2_001 HG0142.00_C2_001 Mod. Mod. Vertical drains (OPT.) Horizontal exhausts (STD) Supply GAS LRN and LRN and HG0142.00_C2_007 HG0142.00_C2_007 ØG ØG [mm] [mm] LRN018 LRN018 LRN028 LRN028 LKN020 LKN020 3/4" LRN035 LRN035 LRN045 LRN045 LKN035 LKN035...
- Page 18 LKN and LRN WARM AIR HEATER Packaging Mod. LRN and LKN Bi Bi Li Li Hi Hi [mm] LRN018 LRN028 LKN020 LRN035 LRN045 1030 LKN035 LRN035-00C0 LRN035-00Z0 1040 1030 LKN035-00C0 LKN035-00Z0 LRN - RAPID PRO e LKN - KONDENSA cod. HG0142.01GB ed.A-2403...
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Page 19: Models For Outdoor Installation
LKN and LRN WARM AIR HEATER 3.7. Models for outdoor installation A version for outdoor installation is available for some models, with an IPX5D protection rating: LKN035-00X0 with axial fan LKN035-00Z0 with centrifugal fan LRN035-00Z0 with centrifugal fan The outdoor version includes: 1) roof for protection from rain;... -
Page 20: User's Instructions
LKN and LRN WARM AIR HEATER USER'S INSTRUCTIONS 4.2. Interface Panel The LRN and LKN heaters are fitted as standard with a multifunction LCD panel located on the front panel of the 4.1. Operating Cycle suspended heater, which is used to control, configure and The wall mounted LRN and LKN heaters operation is fully diagnose all operating parameters of the equipment. - Page 21 LKN and LRN WARM AIR HEATER Use the ↑ (up arrow) and ↓ (down arrow) buttons to scroll through Input - InP Menu the menus. To select the menu, or select the parameter, press Allows to display the value and/or status of analogue and digital ENTER.
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Page 22: Reset
LKN and LRN WARM AIR HEATER 4.4. Flame indication LED Entering the password • From the home screen (rdy/Sty/rOF/OFF/HEA/Air/COO/ An orange LED is present on board the CPU PCB, indicating SAn/EXX) press ENTER then use the ↑ (up arrow) and ↓ the opening of the gas valve and/or the presence of flame. -
Page 23: Navigation Map Of Lcd Display Menu Cpue G26800
LKN and LRN WARM AIR HEATER 4.5. Navigation map of LCD display menu CPUE G26800 Level Level Level ENTER ENTER ENTER “Confirm” type of operation ENTER “Confirm” ENTER ENTER “Confirm” adjustment burner ENTER “Confirm” display machine status ENTER ENTER “Confirm” function degasser “Axx”... - Page 24 LKN and LRN WARM AIR HEATER - "input management" - "output management" ENTER ENTER “Value” “Value” “Value” “Value” “Value” “Value” ENTER “Value” “Value” “Value” “Value” ENTER “Value” “OPn/CLS” “Value” “OPn/CLS” “OPn/CLS” “OPn/CLS” “OPn/CLS” “OPn/CLS” “OPn/CLS” “OPn/CLS” “OPn/CLS” “OPn/CLS” - “PCB parameters” ENTER “PWD”...
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Page 25: Adjustment
LKN and LRN WARM AIR HEATER 4.6. Adjustment 4.7. Accessories The LRN or LKN heaters have three heat output regulation Ambient temperature adjustment modes: The LRN and LKN heaters are supplied without remote control • 0-10 Vdc; and/or thermostat to regulate the room temperature as they can •... - Page 26 LKN and LRN WARM AIR HEATER Operation with chronothermostat (OPTIONAL) The Smart X (WEB or EASY) remote controls are powered with The heater operation is entirely automatic and, by using a a voltage of 12 Vdc +10%/-15%. chronothermostat, the ambient temperatures can be regulated. An integrated temperature probe allows the management of the The chronothermostat and the PCB monitor all the control and room temperature of the controlled area;...
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Page 27: Installation Instructions
LKN and LRN WARM AIR HEATER INSTALLATION INSTRUCTIONS Fixed shelves To install the fixed shelves to the walls: Instructions for installing and setting the heater are intended for • fix it to the wall and level the bracket with a spirit level; suitably qualified personnel only. - Page 28 LKN and LRN WARM AIR HEATER Suspended heater Vertical heater FOR ALL LRN and LKN HEATERS ONLY FOR LRN HEATERS To install a suspended heater by using chains or threaded bars, The heater can be installed with air intake from top to bottom a kit containing supporting hooks is available as an accessory by requesting the G29890 kit.
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Page 29: Condensate Drain
LKN and LRN WARM AIR HEATER 5.3. Condensate drain The trap, installed inside the heater, has a condensate detection electrode that shuts down the generator in case the condensate The LKN series heaters are flue gas condensing appliances. does not flow out correctly from the drain, in order to prevent The lowering of the flue gas temperature in the tube bundle of condensate from remaining inside the heat exchanger. -
Page 30: Connections To The Flue
LKN and LRN WARM AIR HEATER 5.4. Connections to the Flue CAUTIONS Special attention must be paid to the condensate drain; an The LRN and LKN heaters are fitted with a watertight combustion incorrectly installed draining system, in fact, could jeopardize circuit and with a fan located upstream of the heat exchanger. - Page 31 LKN and LRN WARM AIR HEATER All components must be CE marked, certified in compliance with EN 1856-1 and EN1856-2 standards and identified by an NOTE: If the module is installed indoor: ID plate showing their features. Below is an example: - using coaxial connections is allowed for heaters with a maximum length of 3 metres;...
- Page 32 LKN and LRN WARM AIR HEATER LRN models Pressure available at the exhaust [Pa] Component Pressure drop [Pa] Code SMOOTH Ø80 PIPE [l=1 m] G15820-08-XXX BEND Ø80 WIDE RADIUS 90° G15810-08-90 BEND Ø80 WIDE RADIUS 45° G15810-08-45 Ø80 WALL-MOUNTED TERMINAL FROM SEPARATE TO COAX 17.1 26.1 38.2...
- Page 33 LKN and LRN WARM AIR HEATER Fume exhaust and rear air intake Installing the terminals The LRN and LKN heaters are fitted with a top and bottom provision for air inlet and fume exhaust. According to installation requirements, the terminals can be fitted at the back or at the top.
- Page 34 LKN and LRN WARM AIR HEATER Type C53 terminal Fumes OUT Combustion circuit watertight to the environment. One of the ducts is connected to the roof, the other to the wall. of the pipe routing made with the Ø shown, excluding the terminal.
- Page 35 LKN and LRN WARM AIR HEATER Horizontal coaxial C13 terminal Combustion circuit watertight to the environment. The ducts go directly through the wall. of the pipe routing made with the Ø shown, excluding the 1max terminal. HG140.00_IM_024 The terminal consists of: •...
- Page 36 LKN and LRN WARM AIR HEATER C33 type coaxial roof-mounted terminal Combustion circuit watertight to the environment. The ducts are connected to the outside with a coaxial terminal. of the pipe routing made with the Ø shown, excluding the terminal. The terminal consists of: •...
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Page 37: Electrical Connections
LKN and LRN WARM AIR HEATER 5.5. Electrical connections Analogue and digital inputs Should it be necessary to control one or more analogue inputs, Cautions through the connection of an external NTC probe, the relevant cable sections are indicated below according to the cable length: All remote controls must have a maximum connection length of less than 10 m and up to 500 m in the case of Type... - Page 38 LKN and LRN WARM AIR HEATER Smart X Web/Easy connection Summer ventilation Use the connector provided to connect the To enable the fans only (summer ventilation with burner off), Smart X Web/Easy. Connect power supply with shielded wiring three types of controls are available: with a minimum cross-section of 0.5 mm , respecting polarity.
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Page 39: Modulation Pcb Parameters
LKN and LRN WARM AIR HEATER 5.6. Modulation PCB Parameters All values of the parameters of the CPU PCB are shown for all LRN and LKN heater models. The “LCD” column shows the parameters that could be modified with Password via remote LCD control (even with modbus address ≠... - Page 40 LKN and LRN WARM AIR HEATER Parameters of G26800 CPU PCB version 8.03.xx Parameter Name LRN018 LRN035 LRN028 LRN045 Smart U.M. DESCRIPTION LKN020 LKN035 REG 02 rGL R20 Control 02 - NOT USED ON LRN-LKN Adjustment enabling REG_02 0 = disabled REG 03 rGL R30 Control 03 - NOT USED ON LRN-LKN Adjustment enabling...
- Page 41 LKN and LRN WARM AIR HEATER Parameters of G26800 CPU PCB version 8.03.xx Parameter Name LRN018 LRN035 LRN028 LRN045 Smart U.M. DESCRIPTION LKN020 LKN035 CTRL 08 CrL C80 Counter and reset control HOURS Burner operating hours counter CYCLES Ignition cycles counter FAULT Fault counter Reset control...
- Page 42 LKN and LRN WARM AIR HEATER Parameters of G26800 CPU PCB version 8.03.xx Parameter Name LRN018 LRN035 LRN028 LRN045 Smart U.M. DESCRIPTION LKN020 LKN035 RS485 Serial Communication Configurations slave serial baud rate (SMART X) 0 = baud rate 19,200 - Even Parity 1 = baud rate 9,600 - Even Parity D_SL 2 = baud rate 19,200 - Odd Parity...
- Page 43 LKN and LRN WARM AIR HEATER Parameters of G26800 CPU PCB version 8.03.xx Parameter Name LRN018 LRN035 LRN028 LRN045 Smart U.M. DESCRIPTION LKN020 LKN035 Y0 Analogue Output Configuration - DO NOT CHANGE! Direct/reverse output configuration 0 = direct output: the maximum calculation value (100%) corresponds to the maximum output value 1 = reverse output: the maximum calculation value (100%) corresponds to the minimum output value...
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Page 44: Analysis Of Lockouts- Faults
LKN and LRN WARM AIR HEATER 5.7. Analysis of lockouts- faults The CPU-SMART manages two types of lockouts: • preventive, it warns the customer that the LRN and LKN heaters require maintenance; • operational, it stops the LRN or LKN heater for safety reasons or to ensure its correct operation. Some operational faults require manual reset;... - Page 45 LKN and LRN WARM AIR HEATER CODE DESCRIPTION CAUSE RESET Flue Gas Fan Fault Alarms (VAG) • Flue gas fan (VAG) power supply interrupted; • Flue gas fan (VAG) fault; • CPU PCB fault. To check possible CPU failure, disconnect 4-wire No flue gas fan (VAG) start-up or connector (PWM) from flue gas fan (VAG) and check Manual...
- Page 46 LKN and LRN WARM AIR HEATER CODE DESCRIPTION CAUSE RESET Parameter configuration error alarms Not used. Programming error of par. CTRL_01. Set Pressure probe error par. CTRL_01 = 0 Not used. Programming error of par. CTRL_01. Set Pressure less than ST_H20 setpoint par.
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Page 47: Gas Connection
LKN and LRN WARM AIR HEATER GAS CONNECTION NOTE: For ease of maintenance, connect the heater by means of a seal and swivel gasket. Use the gas line connections only with CE certified components. Avoid using threaded connections directly on the gas connection. The heater is supplied complete with: - double coil gas valve Current legislation allow a maximum pressure inside the... -
Page 48: Servicing Instructions
LKN and LRN WARM AIR HEATER SERVICING INSTRUCTIONS The first start-up must be carried out only by authorised service centres. The first start-up also includes a combustion analysis, which is compulsory. The equipment is certified in the EC and non-EC countries, according to the gas categories shown below. 7.1. -
Page 49: Gas Settings Table
LKN and LRN WARM AIR HEATER 7.2. Gas Settings Table LRN-RAPID Table If a Hydrogen-ready installation is provided for H2 percentages up to 20% (referred to gas distributed in the network), all gas valve calibration operations must refer to the O2 values in table G20 TYPE OF GAS G20 - Cat. - Page 50 LKN and LRN WARM AIR HEATER TYPE OF GAS G25.1 - Cat. S (Only for HU-Hungary) TYPE OF MACHINE LRN018 LRN028 LRN035 LRN045 CATEGORY according to the country of destination - see reference table SUPPLY PRESSURE [mbar] 25 [min 20-max 33] GAS CONSUMPTION (15°C-1013mbar) CARBON DIOXIDE -...
- Page 51 LKN and LRN WARM AIR HEATER TYPE OF GAS G31 - Cat. 3P TYPE OF MACHINE LRN018 LRN028 LRN035 LRN045 CATEGORY according to the country of destination - see reference table SUPPLY PRESSURE [mbar] 30 [min 25-max 35] - 37 [min 25-max 45] - 50 [min 42.5-max 57.5] GAS CONSUMPTION [kg/h] (15°C-1013mbar)
- Page 52 LKN and LRN WARM AIR HEATER LKN-KONDENSA table If a Hydrogen-ready installation is provided for H2 percentages up to 20% (referred to gas distributed in the network), all gas valve calibration operations must refer to the O2 values in table G20 TYPE OF GAS G20 - Cat.
- Page 53 LKN and LRN WARM AIR HEATER TYPE OF GAS G2.350 - Cat. Ls (Only for PL-Poland) TYPE OF MACHINE LKN020 LKN035 CATEGORY according to the country of destination - see reference table SUPPLY PRESSURE [mbar] 13 [min 10-max 16] GAS CONSUMPTION (15°C-1013mbar) CARBON DIOXIDE - [ % ]...
- Page 54 LKN and LRN WARM AIR HEATER TYPE OF GAS G30 - cat. 3B-P * TYPE OF MACHINE LKN020 LKN035 CATEGORY according to the country of destination - see reference table SUPPLY PRESSURE [mbar] 30 [min 25-max 35] - 50 [min 42.5-max 57.5] GAS CONSUMPTION [kg/h] (15°C-1013mbar)
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Page 55: Starting Up For The First Time
LKN and LRN WARM AIR HEATER 7.3. Starting up for the first time ATTENTION: IT IS FORBIDDEN to loosen the gas connections, the pressure connectors or any other gas The LRN and LKN heater modules are supplied with settings connection point located inside the burner housing, to entered and tested for the gas specified on the nameplate. -
Page 56: Conversion To Lpg
LKN and LRN WARM AIR HEATER 7.5. Conversion to LPG 7.6. Conversion to gas G25 - G25.1 - G25.3 - G27 Conversion is strictly prohibited in some countries, such Conversion for gasses from G20 to G25 or G25.1 or G25.3 as Belgium, which do not allow the double gas category. -
Page 57: Replacing The Gas Valve
LKN and LRN WARM AIR HEATER 7.8. Replacing the Gas Valve 7.10. Replacing the modulation PCB If the gas valve must be replaced, it is required to proceed with When replacing the CPU modulation PCB, it is required to carry an inspection and possibly calibrate the CO level through the out some essential operations, described below. -
Page 58: Maintenance
LKN and LRN WARM AIR HEATER MAINTENANCE 1) Inspection of electrodes Remove the electrode. Check the integrity of the ceramic and To keep the heater efficient and guarantee a long lifetime of the use sandpaper to remove any oxidation on the metal parts of same, it is advisable to run some inspections at regular intervals: the electrodes. - Page 59 LKN and LRN WARM AIR HEATER 5) Inspection and cleaning of the trap and condensation 9) Inspection of the ionization current collection tray This procedure can be done directly from the LCD display by Clean the trap every year, and check the connections. Make entering into the Out menu.
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Page 60: Wiring Diagram
LKN and LRN WARM AIR HEATER WIRING DIAGRAM LRN - RAPID PRO e LKN - KONDENSA cod. HG0142.01GB ed.A-2403... - Page 61 LKN and LRN WARM AIR HEATER LRN - RAPID PRO e LKN - KONDENSA cod. HG0142.01GB ed.A-2403...
- Page 62 LKN and LRN WARM AIR HEATER Notes _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ LRN - RAPID PRO e LKN - KONDENSA cod.
- Page 63 LKN and LRN WARM AIR HEATER Notes _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ LRN - RAPID PRO e LKN - KONDENSA cod.
- Page 64 LKN and LRN WARM AIR HEATER LRN - RAPID PRO e LKN - KONDENSA cod. HG0142.01GB ed.A-2403...
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