Installation Manual - Unical Lattner Condensing Hot Water Boilers

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Instructions for the installer3.9 - FLOW AND RETURN PIPE CONNECTIONSNOTICEWhen using plastic pipes, observe the supplier’sinstructions especially those referring to recommendedjointing techniques and the notes relatingto the heating system water.NOTICETo prevent contamination in the heating systemwe recommend you integrate a dirt filter in thereturn pipe, near the boiler. In an old system it isa requirement to install a dirt filter. Also installshutoff valves to enable filter cleaning immediatelyupstream and down stream of the dirt filter(scale cartridge or y-strainer).When determining the size of the CH circuit pipes it isessential to bear in mind the pressure losses induced by anyof the system’s components and by the configuration of thesame system.The route of the piping has to be conceived taking all thenecessary precautions in order to avoid air locks and tofacilitate the continuous purging of the system.- Connect CH flow pipe to the Supply connection makingsure it is not under stress. Use a supply pipe with a minimumdiameter of 1’’¼ (32 mm).- Connect the return pipe with a fiat rubber seal installed tothe Return connection making sure it is not under stress.Use a return pipe with a minimum diameter of 1’’¼ (32mm).WARNING!Before installing the boiler we recommendthat the system is flushed out with a suitableproduct, in order to eliminate any metallictooling or welding residues, oil and grimewhich could reach the boiler and affect theproper running of the boiler.RMGATEVALVESWARNING!Ensure yourself that the system’s piping is notused as the earth clamps for the electrical ortelephonic system. They are absolutelyunsuitable for this use. In a short time this couldcause serious damage to the piping, boilerand radiators.NOTICEThe pipe to be connected to the boiler must becleaned before connecting in order to preventdirt from entering and damaging the boiler.WARNING!IT IS ABSOLUTELY FORBIDDEN TO FIT ON-OFFVALVES ON THE GENERATOR TO THE FOREOF THE SAFTEY DEVICES20
3.10 - PRIMARY BOILER PUMP OR BOILER SYSTEM PUMPInstructions for the installerThe following table gives an indication of the pump’s flow ratein function of the Δt of the primary circuit.Power supply in btu (kW)ALKON 50 ALKON 70154,000(45,13)199,000(58,32)Size of the pumpsIf determined by the installeror technical engineers mustbe sized according to thedata of boiler and system.Max flow ratedemanded in gal/h (l/h) ΔT 27°F (15°C)Max flow ratedemanded in gal/h (l/h) ΔT 36°F (20°C)683(2826)513(2120)683(3927)663(2946)In case of fixed raet pump isrecommended to choose acirculator with flow rate andhead at about 2/3 of thecharacteristic curve.The chart below shows, respectively:A) Prevalence available net losses of the boiler (For boilersequipped with a pump supplied by LATTNER)The Δt between supply andreturn boiler should never beless than 27 °F (15 K).B) Pressure drop between Return and Delivery (For boilerssupplied without pump)PRESSURE AVAIBLE TO THE SYSTEM (red)PRESSURE LOSSES (Blue)Pressure losses in wcPRESSURE AVAIBLEALKON 70 (1)ALKON 50 (2) (1)APRESSURE LOSSESALKON 50B(1) VALUES REFER TO THE MAX SPEED(2) IF EQUIPPED WITH OPTIONAL PUMPQ: water flow rate gal/hNOTE: The use of a mixing header fitted between the boiler circuit and the system circuit is always advisable.It becomes INDISPENSABLE if the system requires flow rates superior to the maximum permitted boiler flowrates, which is to say lower than 27 °F (15 K).21
Page 7 and 8: General Information1.8 - TOOLS, MAT
Page 9: Technical features and dimensions2.
Page 12 and 13: Technical features and dimensions2.
Page 14 and 15: Instructions for the installer3.2 -
Page 16 and 17: Instructions for the installer3.5 -
Page 18 and 19: Instructions for the installerteste
Page 23 and 24: Instructions for the installer3.14
Page 25 and 26: 3.17 - COMBUSTION AIR AND VENTILATI
Page 27 and 28: Instructions for the installerThe f
Page 31 and 32: Room thermostat and/or E8 heating c
Page 33 and 34: 543WIRING DIAGRAM for ALKON 70Instr
Page 41 and 42: 3.29 - PROGRAMMING OF THE OPERATING
Page 43 and 44: 4 INSPECTION AND SERVICING SCHEDULE
Page 45 and 46: Servicing schedule4.5 - VISUAL INSP
Page 47 and 48: Fault finding5 FAULT FINDING5.1 - E
Page 49 and 50: 49Spare partsALKON 5013363741 39 38
Page 51 and 52: Spare partsSpare parts listPos. Cod

Installation Manual - Unical Lattner Condensing Hot Water Boilers

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