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Related Manuals for Unical AIREX 25 2S
Summary of Contents for Unical AIREX 25 2S
- Page 1 AIREX 2S INSTALLATION AND SERVICING MANUAL 00333938 - 1 edition - 12/11...
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Page 2: Table Of Contents
General Information CONTENTS GENERAL INFORMATION ....................................Symbols used in this manual ..................................Correct use of the appliance ..................................Water treatment ......................................Information to be passed over to the end user or the person in charge of the appliance ................. Safety warnings ......................................Data badge ........................................ -
Page 3: General Information
The end user is not qualified to carry out any service work on the boiler. Failure to follow the instructions indicated in this manual, which is supplied with the boiler, could cause injury to persons, animals or damage to property. UNICAL shall not be held liable for any injury and/or damage. GENERAL INFORMATION 1.1 - SYMBOLS USED IN THIS MANUAL... -
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 Warnings
Please read carefully the instructions contained in this manual Any repairs must be carried out by Unical authorized as they provide important indications regarding the safe technicians and using only original spare par ts. Non- installation, use and servicing of this appliance. -
Page 6: Technical Features And Dimensions
Technical features and dimensions TECHNICAL FEATURES AND DIMENSIONS 2.1 - TECHNICAL FEATURES Airex is a steel boiler running by natural wood in logs, total gasification, flame inverted, with the combustion chamber under pressure. It comes in the following models: AIREX 25 2S AIREX 40 2S AIREX 50 2S... -
Page 7: Dimensions And Water Connections
T6 Trap sensor safety thermostat T7 Trap Operating thermostat probe, of fig. 1 maximum, of minimum, thermometer T8 Boiler drain MODELS AIREX 25 2S AIREX 40 2S AIREX 50 2S AIREX 65 2S AIREX 80 2S (kW) MAXIMUM USEFUL OUTPUT*... -
Page 8: Main Components
The air can be perfectly dosed because the grate covered with fired wood has the same crossing resistance and thus the combustion will be always optimal. Unical has already used this principal for many years with the GASOGEN G3 2S boiler. - Page 9 To obtain this Unical has opted for an exchange surface with dry smoke passes (fig. 4), which have already been extensively tested in oil fired boilers working at low water temperature, thus permitting low smoke temperatures without danger of condensate forming.
- 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 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 fig. 8 recommendations. -
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 The Heat Exchanger's Drainage
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: Installation Instructions
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 should 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 controlled when the upper loading door is closed. Check 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 The 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 outlets regulation and national codes of practice. suitable to the type of fuel used. Damages caused by installation errors and for The chimney is of fundamental importance for correct boiler non-observance of the instructions given by operation: it is therefore necessary that the chimney is... -
Page 21: Electrical Connections
4A! implemented; in case of doubt, ask for a professionally qualified engineer to check the appliance’s electrical system. UNICAL refuses responsibility for any damages arising from Approvals failure to earth the boiler correctly. The UNICAL control panel code 36749 has... -
Page 22: Standard Control Panel
Instructions for the installer 3.12 - STANDARD CONTROL PANE The standard control panel (code 36749) operates in a semi-automatic way and is supplied in a cardboard with the following standard 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 connection of the thermostat bulbs to 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 fig. 42 LEGEND WIRING DIAGRAM Ph Phase (230V ~ 50Hz) Temporized relay Neutral R1 Relay F1 General fuse (max 4A)
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Page 24: Water 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 Standard panel AIREX boiler operates automatically the shut off of the fan and the recirculation pump, if the boiler temperature(After 30 minutes from the closing of the door... - Page 25 Instructions for the installer Water production for heating plant with temperature controlled on the system by mixing valve with manually control. Production of hot water boiler with a coil boiler or plate heat exchanger system with separate system and dedicated charge pump.
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Page 26: Filling The System
This could cause damage to the washers and could cause noise during normal boiler operation. UNICAL refuses all liability for injury to persons, animals or damage to property deriving from not having respected the above mentioned recommendations. -
Page 27: Boiler Start-Up
Failure to do so could cause injury to persons, animals or damage Explain and demonstrate to the user the correct function to property. UNICAL shall not be held liable and adjustment of the temperature, thermostats and for any injury and/or damage. -
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 Wood is formed mainly by cellulose and lignite. It different essences (beech, oak, fruit, resinous), different contains other substances, such as resin moisture content, and due to different shapes and dimensions. -
Page 29: Start-Up
The wood must be of the following length: Ring nut air adjustment a) 50 cm (+ 1 cm - 4 cm) for models AIREX 25 2S and 40 2S b) 70 cm (+ 1 cm - 4 cm) for the model AIREX 50 2S and... -
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 obstructions. - Logs too short cause irregular air passages, with consequent reduction in output and efficiency. - In case the quality of the wood causes “obstructions”... -
Page 31: Checks To Carry Out After First Start-Up
Instructions for the installer 4.8 - CHECKS TO BE CARRIED OUT AFTER THE FIRST START CHECKING SEALS - If the ash does not go down well (increasing the primary air During the initial start-up check the tightness - If too much ash falls (decreasing primary air P). of the circuit and the connection to the - If the chimney smokes (open throughout the secondary air chimney flue. -
Page 32: Thermostat Adjustments
Instructions for the installer PRECAUTIONS TO BE TAKEN DURING BOILER OPERATION If the flame is a dark orange colour, the secondary air is After every air adjustment , wait 5 to 10 minutes before making insufficient and the surfaces of the combustion chamber will a new adjustment. -
Page 33: Fault Finding For Boilers With Standard Control Panel
- The fan starts, but after 30 minutes it stops; any other inter ventions and contact an by switching OFF and ON the main switch (pos. 11) it re-starts. authorized UNICAL After Sales Service. Remedy: - Increase the temporized relay’s intervention time... -
Page 34: Servicing And Maintenance Schedule
(for example safety devices or power switches) and ensure yourself that it cannot be accidentally reinserted. For this reason UNICAL recommends that a servicing contract - Close the on-off gas cock fitted upstream of the back up should be made with one of our authorized After Sales Service boiler. - Page 35 Servicing schedule Servicing of the boiler body - If the boiler continues to operate badly, even after having cleaned 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 has cooled down.
- Page 36 Servicing schedule Cleaning the fan(s) WARNING: First of all cut the power supply to the boiler Remove the fan and clean the blades from the incrustations. Normally to clean it properly we recommend you use compressed air or scrape the dirt off. 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 Component Soluzione inconveniente Cast iron fire bars If necessary replace If necessary replace Stainless steel grate If necessary replace Fire bars mineral wool insulation Primary and secondary air inlets If necessary clean them Soundness of the bypass disk If necessary adjust it If necessary repair it using the refractory kit (see spare...
- Page 40 - info@unical-ag.com The Unical declines every responsibility for the possible inaccuracies if owed to errors of transcript or press. Also reserves the right to bring those changes that it will hold necessary to it own products or profits, without jeopardizing...
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