NTI Tft60 - 399 Installation And Operation Instructions Manual

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NTI Tft60 - 399 Installation And Operation Instructions Manual Manual pdf 48 page image

Trinity │Installation and Operation Instructions Tft Series4811.0 LEAD LAG INSTRUCTIONSMultiple Boiler ApplicationsThe Tft controller has the internal capacity to stage or Lead-Lag up to 8 boilers configured in a cascade. ThisLead-Lag capability allows a designated “Master” boiler to communicate with and effectively control eachboiler in a multiple boiler system. This function is accomplished by “Daisy Chaining” a 3-wire cable betweeneach of the boilers and enabling the Master parameter in the boiler of your choice. The boiler with the Masterparameter enabled becomes the single point of contact for Central Heating, Domestic Hot Water and OutdoorReset settings and control wiring. Use the instructions detailed in this section to set-up and install the cascadeboiler system; reference Appendix A – Controller and Touchscreen Display Instructions for details on moreadvanced settings and for assistance with navigating the touchscreen display.Figure 11-1 Multiple Boiler Lead-Lag Plumbing ConfigurationWater connection locations willvary between boiler models;refer to Figures 10-1 to 10-3. Master BoilerTft399 Models Illustrated