16Matrix Installation and Operation InstructionsWARNINGTHIS APPLIANCE CONSISTS OF A “LOW-MASS” BOILER AND MUST HAVE ADEQUATE WATERFLOWING THROUGH IT WHENEVER THE BURNER IS ON. FAILURE TO DO THIS WILL DAMAGETHE UNIT AND VOID THE WARRANTY. PLUMBING MUST INCORPORATE A PRESSUREREGULATING FILL VALVE AND PRESSURE RELIEF VALVE.WARNINGHYDRONIC SYSTEMS, OLD AND NEW, MUST BE FLUSHED TO REMOVE SEDIMENT, FLUX,FILINGS, ETC. FAILURE TO DO SO WILL SERIOUSLY DAMAGE THE BOILER, VOIDINGWARRANTY. (CLEAN WITH FERNOX CLEANER F3, NTI PART NUMBER: 83449.)WARNINGTHE BOILER FITTINGS CAN’T SUPPORT ANY WEIGHT. SUPPORT ALL OF THE PLUMBINGSYSTEM EXTERNALLY.DO NOT APPLY TORQUE TO THE PLUMBING FITTINGS. HOLD THE FITTING WHEN INSTALLING,OTHERWISE DAMAGE TO THE UNIT WILL OCCUR.WARNINGWATER WITH A TOTAL HARDNESS GREATER THEN 100PPM (6 GRAINS/GALLON) MAY RESULTIN HEAT EXCHANGER FAILURE AND WILL VOID YOUR NTI WARRANTY. TREAT ALL SYSTEMSWITH FERNOX PROTECTOR F1 (NTI PART NUMBER: 83448), WHICH IS INCLUDED WITH THEMATRIX PACKAGE.CAUTIONThis appliance is designed to operate in residential and commercial heating systems, and is not intendedfor:1. Outdoor installations, or unheated spaces, which can cause freezing.2. Process heating of potable water, or any other fluids.3. Un-pressurized, and gravity feed heating systems.4. Heating systems with very low pressures or flow.IMPORTANT1. Understand and follow the plumbing requirements provided in this section.2. Keep serviceability in mind when installing plumbing around the furnace cabinetry.3. Install fittings that will allow the system to be flushed if needed during annual check-ups.4. Add inhibitor, Fernox Protector F1 (NTI Part Number: 83448), to the system water to help preventlimestone and magnetite deposits, and galvanic corrosion. Bottle provided will treat an average 100-liter (26 US gallon) system.6.0 BOILER PLUMBING