NTI Trinity Ti 100 Installation And Operation Instructions Manual

NTI Trinity Ti 100 Installation And Operation Instructions Manual Manual pdf 18 page image

18ABB ABoilerC HMThrottling ValveABCCheck ValveDrain Valves for CleaningHDEFGMixed DomesticWater6.3 Domestic Combi System(((OPTIONAL on Ti150 and Ti200 Only)))"The Trinity Combi is designed for installations where there is a limited DHW demand, such as smaller apartments and condos. Inapplications where there is a greater DHW demand we recommend the use of our heating model boiler in conjunction with an IndirectWater Heater."The Combi has all thefeatures of the standard heating version plus;External Combi Manifold, diverting valve,plate heat exchanger & flow switch. Note:The installer is required to install the pumpflange (included in Combi kit) onto the boilerreturn pipe prior to installing the boiler; thebolts must be inserted into the flange prior toinstalling the flange.COMBI Sequence of operationWhen water flow greater than .5 GPM passes throughthe flow switch, it closes a contact to terminals A-C onthe Sentry 2100 controller. The boiler is immediatelyenergized (if not already on), the 3-way diverting valvemoves to the domestic hot water position “A”, and thecirculator is energized. Hot water is circulated throughthe plate heat exchanger. The flame is modulated tomaintain the “LO” setting on the Sentry control. TheSentry uses the boiler thermister to read thetemperature of the boiler water. Space heating is notprovided during a call for domestic.A Heating System Supply (hot)B Heating System Return (cool)C Heating & Combi CirculatorD No elbows within 2” of flow switchE 3 way diverting valveF Domestic Water in (Cold)G External Combi Manifold #82470-1H Flow switch MUST be in verticalposition, inlet down.S R S R S RCheck ValvesNote: See page 15 for location ofexpansion tank and othercomponentsInsert secondaryLoop here. See pages16 & 17Primary Loop For multipleboilers (Non-Combi’s only)Boiler 3Boiler 2Boiler 1Pump 3Pump 2Pump 1For the state of MassachusettsCombi mustbe field equippedwith 150 PSIrelief valve asshown (notprovided)C HMReliefValveNote: Locations of plumbingconnections are not be asshown, refer to labels onboiler, contact NTI with anyquestions.