NTI Trinity Ti 150 Installation And Operation Instruction Manual

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166.2.3 Multiple Zones with different temperaturesUsing pumps and tempering valvesUsing Injection pumpsLoop 1HighTemp.InjectionPumpPrimary loopMax. 12” apart Max. 12” apartMax. 12”apartMax. 12”apartLoop 2LowTemp.InjectionPumpLoop Pumps sized to each loops flow and head requirementsBoiler sensor #2(Lo Temp.)Boiler sensor #1(Hi Temp.)Mix sensor #1(Hi Temp.)Mix sensor #2Lo Temp.)See figure7.2.3 “Multiple Zones using pumps,and pump controller”By setting the tempering valves todifferent settings, multipletemperatures can be obtained.Installer may require throttling andcheck valves to correctly regulate thesystem.Other configurations may work, butunder no circumstances can a mixingvalve be placed in the primary loop asoverheating of the boiler could occur.See figure7.2.4 “Multiple temperature Zonesusing injection pump”Installer may require throttling andcheck valves to correctly regulatethe systemZone 3High Temp.Tempering valveZone 2Med. Temp.Zone 1Low Temp.Pumps sized to eachzones flow and headrequirementsPrimaryLoopMax. 12” apart