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Related Manuals for Unical AIREX 2S Series
Summary of Contents for Unical AIREX 2S Series
- Page 1 AIREX 2S INSTALLATION AND SERVICING MANUAL 00333938 - 1 edition - 05/17...
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Page 2: Table Of Contents
General Information CONTENTS 1 GENERAL INFORMATION ....................................3 1.1 Symbols used in this manual ..................................3 1.2 Correct use of the appliance ..................................3 1.3 Water treatment ......................................3 1.4 Information to be passed to the user ................................3 1.5 Safety warnings ......................................4 1.6 Data badge ........................................ -
Page 3: General Information
The appliance is designed to be used in hot water central heating systems. Any other use of this appliance will be considered improper. UNICAL declines any responsibility for any damages or injuries caused by an improper use; in this case the risk is completely at the user’s responsibility. -
Page 4: Safety Warnings
UNICAL recommends drawing up a service contract. Bad or irregular servicing could compromise the safe operation of the appliance, and could cause injury to persons, animals or damage to property for which UNICAL shall not be held liable. Modifications to parts connected to the appliance... -
Page 5: General Information
Please read carefully the instructions contained in this manual, as Any repairs must be carried out by Unical authorized technicians they provide important indications regarding the safe installation, and using only original spare parts. Non-observance of the above use and servicing of this appliance. -
Page 6: Technical Features And Dimensions
Technical features and dimensions TECHNICAL FEATURES AND DIMENSIONS 2.1 - TECHNICAL FEATURES The Airex is a steel boiler running by natural wood in logs, • Lower door, insulated with refractory conctrete and equipped total gasification, flame inverted, with the combustion chamber with flame sight glass under negative pressure. - Page 7 Technical features and dimensions AIREX 25 2S AIREX 40 2S AIREX 50 2S AIREX 65 2S AIREX 80 2S MODELS (kW) MNOMINAL OUTPUT * DIMENSIONS: (mm) (mm) 1255 (mm) 1405 1405 1225 1355 1355 (mm) (mm) (mm) (mm) 1140 1140 1180 1180 1030...
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Page 8: Main Components
Unical has already used this principal for many years with the GASOGEN G3 2S boiler. The AIREX 2S boiler today has reached such a high level of... -
Page 9: Airex Boiler Structure
, it is important to obtain very low smoke temperatures in order to increase the water efficiency. To obtain this Unical has opted for an exchange surface with dry smoke passes (fig. 4), which have already been extensively... - Page 10 Technical features and dimensions The embers are prevented from falling by cylindrical pieces of refractory steel. The combustion gases, poor in oxygen and still rich in carbon not yet combined, travel across the embers and enter the opening in the centre of the main stone. Inside this pre-combustion chamber, the gases combine with the pre-heated secondary air coming through the grooves of the two cast iron fire bars.
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Page 11: Installation Instructions
Instructions for the installer INSTALLATION INSTRUCTIONS 3.1 - GENERAL WARNINGS WARNING! This boiler is to be destined only to the use for which it has expressly been designed for. Every other use is to be considered improper and therefore dangerous. This boiler is designed to heat water at a temperature inferior to boiling point at an atmospheric pressure. -
Page 12: Installation Codes Of Practice
Instructions for the installer 3.2 - INSTALLATION CODES OF PRACTICE The AIREX 2S is a boiler foreseen for operation with firewood. The appliance must be installed in compliance with all local applicable laws and regulations. -
Page 13: Packaging
Keep the packaging material (cardboard box, plastic bags, polyester protection etc.) out of the reach of children since they can be dangerous. UNICAL refuses all liability for injury to persons, animals or damage to property deriving from not having respected the above mentioned recom- mendations. -
Page 14: Installation
Instructions for the installer 3.5 - INSTALLATION The boiler does not differ from a normal solid fuel fired boiler; therefore there are no particular installation codes of practice other than the applicable national and local safety regulations and laws. The installation room must be properly ventilated via openings, which should have a total surface of at least 0,5 m². -
Page 15: Connection To Safety Heat Excanger Drain
Instructions for the installer 3.7 - CONNECTION TO SAFETY HEAT EXCHANGER DRAIN Solid fuel fired boilers have to be installed with the safety devices foreseen by applicable regulation and laws. For this purpose the AIREX 2S boilers are fitted with a safety heat exchanger. On this safety heat exchanger the installer must fit a heat discharge valve, whose control bulb has to be inserted in the bulb holder placed onto the rear wall of the wood fired boiler. -
Page 16: Assembly Instruction
Instructions for the installer 3.9 - ASSEMBLY INSTRUCTIONS Fan assembly Fit the fan to the smoke chamber. (n° 2 fan for models AIREX 65 2S and AIREX 80 2S). IMPORTANT: When installing the fan it is necessary to check the tightness of the seal on the smoke chamber, otherwise it would cause the deformation of the wall resulting in severe damage to the impeller... - Page 17 Instructions for the installer Fit the microswitch onto its support and adjust the pushing washer axially in order to allow the microswitch to be regularly operated when the upper loading door is closed. Ascertain that the by-pass disk is perfectly closed when the door is closed and the boiler in operation.
- Page 18 Instructions for the installer WORKING THERMOSTAT (Te) TERMOSTATO DI ESERCIZIO (Te) TERMOMETRO THERMOMETER TERMOSTATO MINIMUM THERMOSTAT (Tsc) DI MINIMA (Tsc) MOLLA DI FIXING CLIP FISSAGGIO CONTACT SPRING MOLLA DI CONTATTO TERMOSTATO HIGH LIMIT THERMOSTAT (Tmax) DI MASSIMA (Tmax) MOLLA DI FIXING CLIP FISSAGGIO SAFETY THERMOSTAT (Ts)
- Page 19 UNICAL, to help its customers, has therefore developed a hydraulic kit for recirculation that enhances the function of the circulating water in the boiler.
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Page 20: Flue Outlet Connection
Instructions for the installer 3.10 - FLUE OUTLET CONNECTION The flue system must be installed in accordance with the local We recommend using only flue pipes suitable regulation and national codes of practice. to the type of fuel used. Damages caused by installation errors and for The chimney is of fundamental importance for the correct boiler non-observance of the instructions given by operation: it is therefore necessary that the chimney is imper-... -
Page 21: Electrical Connections
Data plate and Serial number UNICAL refuses responsibility for any damages arising from The panel board identification data plate is glued failure to earth the boiler correctly. -
Page 22: Standard Panel Board
Instructions for the installer 3.12 - STANDARD PANEL BOARD The standard panel board (code 36749) operates in a semi-automatic way and is supplied in a cardboard with the following stan- dard items: - Microswitch which has to be fitted to the mechanism controlling the bypass rod (TKS) as shown in fig. 14 page 17. - A 3 pole cable for the fan’s electrical connection (2 fans for the models AIREX 65 2S and AIREX 80 2S) The introduction of the thermostat bulbs into the bulb holders must be carried out as shown in fig. - Page 23 Instructions for the installer 11 Mains switch 32 Working thermostat 12 Fan switch 41 Main fuse (4A) 13 C.H.pump switch 42 Boiler thermometre 31 Safety overheat thermostat fig. 41 F1 (max 4 A) 230V~ 50Hz (max 4A) 13/21 Te (75°÷85°C) (65°C) Tmax (90°C)
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Page 24: Hydraulic And Electrical Connection Diagrams
Instructions for the installer 3.13 – HYDRAULIC AND ELECTRICAL WIRING DIAGRAMS Introduction! The diagrams below, are diagrams of principle and are subject to customization. For special requirements, please contact our after-sales service. Water production for heating plant with temperature controlled on the system by mixing valve with manually control. The AIREX Standard panel board operates automatically the shut off of the fan and the recirculation pump, if the boiler temperature (after 30 minutes from the closing of the loading... - Page 25 Instructions for the installer Water production for heating circuit with temperature controlled on the system by mixing valve with manually control. Production of hot water boiler with a coil type heat exchanger or plate heat exchanger with separate installation and dedicated loading pump.
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Page 26: Filling The System
NOTE! If the boiler has not been fired for a long period the pump could UNICAL refuses all liability for injury to be jammed. persons, animals or damage to property deriving from not Before switching on the main switch, it is important to carry out having respected the above mentioned recommendations. -
Page 27: Boiler Start-Up
Failure to do so could cause injury to persons, animals or damage to property. UNICAL shall not be held liable for any injury and/or damage. Before firing the boiler check that: the boiler installation has been carried out in accordance with the specific Standards and regulations in force;... -
Page 28: Fire Wood
Instructions for the installer 4.2 - FIRE WOOD tree, poplar and willow. Resinous trees are, normally, medium quality fuels. Wood is therefore an extremely heterogeneous fuel, due to dif- Wood is formed mainly by cellulose and lignite. It ferent essences (beech, oak, fruit, resinous), different moisture contains other substances, such as resin content, and due to different shapes and dimensions. -
Page 29: Start-Up
Instructions for the installer 4.6 - STARTING IGNITION Make sure that the checks, listed in paragraph 4.5 have been performed. For the models AIREX 25 2S, AIREX 40 2S, AIREX 50 2S (fig. 27): Tighten the screw of primary air (P). Fully tighten the adjustment screws of the secondary air (S) to “feel”... -
Page 30: Combustion Air Adjustment
Instructions for the installer USEFUL SUGGESTIONS and LOADING ERRORS TO BE AVOIDED - Logs too long do not fall down properly and can cause „bridges“. - Logs too short cause irregular air passages, with consequent reduction in output and efficiency. - In case the quality of the wood causes „bridges“... -
Page 31: Checks To Carry Out After The First Start
Instructions for the installer 4.8 - CHECKS TO BE CARRIED OUT AFTER THE FIRST START - The flame should not be too noisy (excess of primary air P) CHECKING SEALS - The flame must not be too small (lack of primary air P). - If the ash doesn‘t go down well increase the primary air P). -
Page 32: Thermostat Adjustments
Instructions for the installer After every air adjustment , wait 5 to 10 minutes before making a new adjustment. Once the best adjustment has been established, at the end of the day check that the surfaces of the combustion chamber and the door insulation are of a white colour. If, in despite of these precautions, some blow back will occur, it will be necessary to use bigger logs of wood, with a higher In the ash deposited in the cradle there must be only a few... -
Page 33: Fault Finding For Boilers With Standard Control Panel
Remedy: any other interventions and contact an autho- - Increase the temporized relay’s intervention time rized UNICAL After Sales Service. (this has to be done by the After Sales Service or by authorized trained personnel after switching OFF the mains supply). -
Page 34: Servicing And Maintenance Schedule
- Separate the appliance from the electrical supply by means of a separating device with an opening contact of at least 3 mm For this reason UNICAL recommends that a (for example safety devices or power switches) and ensure servicing contract should be made with an authorized After yourself that it cannot be accidentally reinserted. - Page 35 Servicing schedule Servicing of the boiler body ned it as described above, the cause can be attributed to bad distribution of the secondary air. Danger ! Before servicing the boiler body, make sure the boiler and the external components have cooled down.
- Page 36 Servicing schedule Cleaning the fan(s) WARNING: First of all cut the power supply to the boiler Open the fan and clean the blades from the incrustations. Normally with the use of compressed air and a brush it is possible to clean it properly If the incrustations are more resistant, due to the formation of condensate or tar tears, clean very carefully in order not to bend or deform the blades.
- Page 37 Servicing schedule Components to check during annual servicing Solution of inconveniente Component If necessary replace them Cast iron fire bars Stainless steel grate If necessary replace it Fire bars mineral wool insulation If necessary replace it If necessary clean them Primary and secondary air inlets If necessary adjust it Soundness of the bypass disk...
- Page 38 - info@unical-ag.com Unical declines any responsibility for the possible inaccuracies if due to transcription errors or press. Also reserves the right to bring to its own products those changes that it will consider necessary or useful, without jeopardizing its essential features.
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