Installation Manual - Unical Lattner Condensing Hot Water Boilers

Instructions for the installer3.14 - UNDERFLOOR HEATING SYSTEM(PLASTIC PIPES)NOTICEWhen using oxygen-permeable pipes, e. g. forfloor heating systems, you must separate thesystem using plate heat exchangers.No recourse can be made to the terms of thewarranty in the event of failure to observe theregulations pertaining to plastic underfloorheating pipes.3.15 - CONDENSATE DRAINNOTICEUse materials approved by the authority havingjurisdiction. in the absence of such authority, PVCand CPVC pipe must comply with ASTM D1785,F441 or D2665. Cement and primer must complywith ASTM D2564 or F493.For Canada, use ULC certified PVC or CPVCpipe, fittings and cement.Condensate inletcoming from theflue outletCDuring the combustion process the boiler producescondensate which, through the “A” pipe, flows into the siphon.The condensate which forms inside the boiler has to be routedinto an adequate drain by means of the pipe “B”. otherwisethe boiler will not function and can cause property damage.The condensate must be drained from the boiler in accordancewith local, state or federal rules and regulations.DANGER!Before commissioning the appliance fill thesiphon and check the correct drainage of thecondensate.If the appliance is used with the condensatedrain siphon empty there could be danger ofintoxication resulting from the escape of fluegasses.The connection between the appliance and the sewage systemmust be carried out in compliance with the specific referencestandards, and in particular:- prevent the end user utilizing the condensate produced;- a siphon must be fitted (supplied with the boiler);- there must be no bottlenecks;- the connection must be made just under the bottom part ofthe boiler;- it must be installed so as to avoid freezing of the liquidwhen the boiler is operating and prevent the eventual pressurizationof the sewage system;- consent the correct downflow of the appliance’s liquid discharges;- it must be made with materials which are resistant to condensate- if the condensate outlet of the boiler is lower than the drain,a condensate pump must be used.- The condensate produced by the boiler has a pH valuebetween 3 and 4.- Do not drain the condensation water to the external raingutter because of the danger of freezing and blockage ofthe drain.- Install a neutralization unit if required by the local codeWARNINGBefore putting the boiler into operation fill thecondensate trap with 1.27 cups / 300 ml of water.If the boiler will be installed in a high temperatureinstallation such as baseboard with asupply temperature of 160°F or above, fill thecondensate trap with vegetable oil instead ofwater.BCondensate drainpipe of boiler andchimney(to connect to thesewage systemACondensateinlet comingfrom the heatexchangerPeriodic cleaning of the condensate disposal systemmust be carried out.23