Instructions for the installer3.23 - GENERAL LADDER DIAGRAMSRRSRPFCDS-1TLDKSL (**)A4-2A3-6A3-5 A3-4A3-3 A4-6 A4-5 A4-4 A4-5A4-1A2-3 A2-1A4-4A4-3DISPLAY8 8 8LIGRIBBON CABLEA3AC/DCIGNA8 - 1A8 - 2CPURODFs1FLAMEGRL 4A8 - 2A8 - 1RL 3A1 - 4A1 - 3A1 - 2A1 - 1A9 - 2FA9 - 1RL 1A9 - 6P(*)A9 - 5120 VACRL 2A6 - 6 A6 - 515 kVSPARKCAUTIONHIGH VOLTAGE SPARK LEADATTENTION AUTE TENSION CÂBLE D’ALLUMAGE34
Instructions for the installer3.24 - STARTING UP: Filling and de-aeratingthe boiler and installationCAUTIONObserve the following rules of safety:- All work on the unit must take place in adry environment.- LATTNER units may never be in operationwithout their housing, except in connectionwith maintenance or adjustments.- Never allow electrical or electroniccomponents to come into contact withwater.NOTICECarry out the following tasks in connectionwith maintenance, etc. to an already installedunit:- Shut down all programs- Close the gas shut off valve- Shut off the power at the main power switch- Close the service valves (supply and return)NOTICETake note of the following when maintenanceor adjustments are needed:- The unit must be able to function during theseactivities; for this reason, the unit’s supplyvoltage, gas pressure and water pressuremust be maintained. Ensure that this is not asource of potential danger during theseactivities.WARNINGFollowing maintenance or other activities;always check the installation of allparts through which gas flows (with bubbletest using leak-search spray).3.25 - FILLING THE SYSTEMWARNING!Do not mix the CH system’s water with antifreezeor anti-corrosion solutions using wrongconcentrations! It could cause damage to thewashers and could provoke noise duringnormal boiler operation.LATTNER refuses all liability for injury topersons, animals or damage to propertyderiving from not having respected the abovementioned recommendations.Before filling the heating system, the complete system, includingall zones, must be thoroughly cleaned and flushed toremove sediment.Flush until clean water runs free of sediment. LATTNER suggestsusing an approved system cleaner to flush the system,but not the boiler. Always use LATTNER approved antifreezes.See the list at page 7.Never use reverse osmosis, D.I., or distilled water for fillingthe heating system.WARNING!Do not use petroleum-based cleaning or sealingcompounds in the boiler system. Damageof seals and gaskets in boiler and system couldoccur, resulting in substantial property damage.The central heating installation needs to be filledwith potable water.Use only potable water or approved glycol forfilling the heating system.When the water hardness of the filling waterexceeds > 8 gpg the water has to be treateduntil below the maximum value of 8 gpgThe pH value of the installation water must bebetween 6.5 and 8.5. Check the pH value using proper equipmentor by having the water analyzed by a water treatmentcompany.If pH differs from above, contact LATTNER engineering forfurther assistance.Failure to adhere to the water quality requirements will resultin a void of warranty.Once all the connections are made, it is possible to fill thecircuit.This operation has to be performed very carefully, by observingthe following steps (boiler in Off position):- open the radiator bleeds and make ascertain the goodoperation of the automatic air vent fitted in the boiler.- open progressively the filling valve and make sure theautomatic air vent, in the system, work properly.- close the bleeders of the radiators when water starts tocome out.- control via manometer (Optional) that the water pressurehas reached a minimum value of 11,6/14,5 psi (0,8/1) bar- close the filling valve and bleed again all the radiators.- inspect for the soundness all the hydraulic connections.- after the commissioning of the boiler and the reaching ofthe normal operation temperature, switch off the operationof the boiler and the pump and repeate the bleed operation.- let the installation cool down and, if necessary, add waterin order to reach the minimum presure of 11,6/14,5 psi(0,8/1) bar35
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