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Hersteller: Lochinvar Dateigröße: 820.06 kb Dateiname: Unterrichtssprache:

2) Inlet and outlet connections to the boiler are shown for reference only. Actual connections may vary from those represented here. Consult the Installation and Service Manual for actual locations. 3) Unit(s) pump should operate only during firing periods. *Best practice for Indoor/Outdoor reset. **Best practice for set point operation. DETAIL DETAIL NOT TO EXCEED 4 PIPE DIA. OR A MAX. OF 12” APART C = SYSTEM RETURN WATER B = FROM BOILER OUTLET A = BLENDED WATER NOTES: 1) Unit(s) high limit must be set at max. 2) Inlet and outlet connections to the boiler are shown for reference only. Actual connections may vary from those represented here. Consult the Installation and Service Manual for actual locations. 3) Unit(s) pump should operate only during firing periods. NOT TO EXCEED 4 PIPE DIA. OR A MAX. OF 12” APART INS7238 Rev C Typical piping applications (cont.): Figure 8_Primary/Secondary Piping of a Single Boiler - 2 1/2" Valve Figure 9_Primary/Secondary Piping of Multiple Boilers - 2 1/2" Valve for each boiler DETAIL DETAIL Note: Valve must be installed with proper port orientation. Failure to observe port markings on the valve body prior to installing the valve could result in damage to the unit. NOTES: 1) Unit(s) high limit must be set at max. 2) Inlet and outlet connections to the boiler are shown for reference only. Actual connections may vary from those represented here. Consult the Installation and Service Manual for actual locations. 3) Unit(s) pump should operate only during firing periods. NOT TO EXCEED 4 PIPE DIA. OR A MAX. OF 12” APART C = SYSTEM RETURN WATER B = FROM BOILER OUTLET A = BLENDED WATER NOTES: 1) Unit(s) high limit must be set at max. 2) Inlet and outlet connections to the boiler are shown for reference only. Actual connections may vary from those represented here. Consult the Installation and Service Manual for actual locations. 3) Unit(s) pump should operate only during firing periods. NOT TO EXCEED 4 PIPE DIA. OR A MAX. OF 12” APART INS7238 Rev C 4 of 8 Figure 11_2" LTV Valve - Up to 750,000 Btu/hr Figure 12_2 1/2" LTV Valve - 990,000 Btu/hr and up Figure 10_1 1/2" LTV Valve - 45,000 - 500,000 Btu/hr PORT "A" PORT "C" PORT "B" 3.750 6.125 5.250 A B C TOP SIDE INS7238 Rev C 5 of 8 Figure 13_1 1/2" - Flow vs. Pressure Drop FLOW vs. PRESSURE DROP FLOW IN U.S. GPM Pressure Drop, PSID Figure 15_2 1/2" - Flow vs. Pressure Drop Figure 14_2" - Flow vs. Pressure Drop Maintenance instructions The LTV valve is maintenance free. It does not require regular cleaning or calibration. In most installations, the 1-1/2" and 2" valves are hard piped into place and do not afford access. The 2-1/2" valve has flanged connects which allows removal. If the valve becomes unable to maintain a consistent inlet water temperature of 125°F during steady state firing conditions, replace the valve or the wax element inside the valve. WARNING The recommended maximum high temperature to the valve should be 175°F; the absolute maximum is 195°F. INS7238...

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