Prestige Trimax Solo 60175250399 install manual - Coastal Winair

Boiler PipingAdditional Limit ControlIf a separate LWCO device is required by certainlocal jurisdictions or when the boiler isinstalled above the system piping, the followingguidelines must be followed:- The LWCO device must be designedfor water installations, electrode probetypeis recommended.- The LWCO device must be installed ina tee connection on the boiler supplypiping above the boiler.- Wiring of the LWCO device to the PRES-TIGE Solo is done directly onto the lowvoltage terminal strip, reference Fig. 19page 31 for available terminals for anexternal limit (manual or auto reset).If the installation is to comply with ASME orCanadian requirements, an additional hightemperature limit may be needed. Consultlocal code requirements to determine compliance.The limit should be installed as follows:- Install the limit in the boiler supply pipingbetween the boiler and any isolationvalve.- Maximum set point for the limit is194ºF.- For wiring of the limit reference Fig. 19,page 31, using the external limit/manualreset terminals on the low voltage terminalstrip. This will provide a "hard"lockout requiring a manual reset of thecontrol.Backflow Preventer- Use a backflow preventer valve in themake-up water supply to the unit asrequired by local codes.Boiler System Piping ApplicationsBEST PRACTICEIt is recommended on all piping applicationsto utilize a primary/secondary pipingarrangement as a means to provide freezeprotection of the boiler, which is an integralfunction of the boiler control. Maintain theminimum boiler flow rate, see Graphs 2through 7 on pages 91 through 93. Forother piping arrangements, consult theEngineering Department at Triangle Tubeor consult other approved/recognizeddesign arrangements.BEST PRACTICEOn piping applications utilizing a singlezone or other recognized piping designarrangements, it is recommended that theinstaller uses flow/check valves withweighted seats at or near the appliance toprevent gravity circulation.Expansion Tank and Makeup WaterEnsure the expansion tank is properly sized forthe boiler volume (3 gallons [12 L] for thePRESTIGE Solo 60, 5 gallons [19 L] for thePRESTIGE Solo 175/250, 7 gallons [26 L] forPRESTIGE Solo 399) and the system volumeand temperature.CAUTIONUndersized expansion tanks will causesystem water to be lost through the pressurerelief valve and cause additionalmakeup water to be added to the system.Eventual boiler heat exchanger failurecan result due to this excessive makeupwater addition.The expansion tank must be located as shownin Fig. 7 and Fig. 8 on page 19 when using aprimary/secondary piping arrangement or asper recognized design methods. Refer to theexpansion tank manufacturer instructions foradditional installation details.16