NTI Trinity TX51 Installation And Operation Instructions Manual

NTI Trinity TX51 Installation And Operation Instructions Manual Manual pdf 37 page image

Tx I&O Manual │Boiler and Heating System Piping3710.0 BOILER AND HEATING SYSTEM PIPINGThe heat exchanger of the Trinity boiler is designed to attain the highest level of heat transfer in a compactdesign. To accomplish this, the heating water flows through a series of fin shaped tubes, designed to maximizethe heat transfer area. To maintain the efficient and reliable operation of the heat exchanger, and to avoid heatexchanger failure, it is critical to ensure the rules and guidelines in this section are followed.Failure to follow the instructions provided in this section will void the NTI warranty andmay result in property damage, fire, serious injury or death.Boiler System PreparationPrior to connecting plumbing to the boiler, flush the entire system to ensure it is free of sediment, flux, solder,scale, debris or other impurities that may be harmful to the system and boiler. During the assembly of theheating system, it is important to keep the inside of the piping free of any debris including construction andcopper dust, sand and dirt.For retrofits, all system piping, including radiators, must be cleansed of build-up including sludge and scale. Allsystems, old and new, must be cleansed to remove flux, grease and carbon residue; NTI recommends cleaningthe boiler system with “Fernox F3 Cleaner”. For retrofit applications with heavy limescale and sludge deposits, aheavier duty cleaner may be required; NTI recommends the use of “Fernox DS-40 System Cleaner”. Forinformation on performing the cleaning, follow the instructions included with the applicable Fernox Cleaner. SeeTable 10-1 for a list of recommended boiler system cleaning and treatment products.Failure to rid the heating system of the contaminants listed above will void your NTIwarranty and may result in premature heat exchanger failure and property damage.Table 10-1 Boiler System Cleansers and Corrosion InhibitorsApplication Fernox Product NTI Part # DescriptionBoiler Water Treatment F1 Protector 83448 Corrosion inhibitor.Cleanser for new and old systems F3 Cleaner 83449 Removes flux, grease and carbon residue.Cleanser for Retrofits DS-40 System Cleaner 83450 Removes heavy limescale and sludge deposits.Boiler WaterPressure - Trinity boilers are intended solely for use in pressurized closed-loop heating systems operating with aminimum pressure of 12 PSI at the boiler outlet. To obtain the minimum system design pressure, follow thepiping diagrams illustrated in this section.Oxygen Elimination - This boiler may only be installed in a pressurized closed-loop heating system, free of airand other impurities. To avoid the presence of oxygen, ensure all of the air is removed from the system duringcommissioning via strategically placed, adequately sized air-removal devices; located throughout the heatingsystem. See figures in this section detailing the location of the primary air-removal device required for theboiler. Immediately repair any leaks in the system plumbing to avoid the addition of make-up water; make-upwater provides a source of oxygen and minerals that may lead to heat exchanger failure. Failure to follow theseinstructions will result in poor performance, unnecessary wear of system components and premature failure.The Trinity Tx is not approved for operation in an “open system”, thus it cannot be usedfor direct potable water heating or process heating of any kind.Water Chemistry – The installer of the Trinity Tx boiler must consider the condition of the water in the heatingsystem. Ensure the condition of the boiler water falls within the following parameters: PH – between 7.5 and 9.5.  Iron – less than 0.5mg/l. Chloride – less than 125mg/l.  Copper – less than 0.1mg/l. Conductivity – 100 to 300μS/cm (at 25ºC); [TDS 50 to 150ppm or Total Hardness 3 to 9grains/USgal.]