O. Smith VF Boiler model VW______ having an input rating of _______ BTU/hr and capable of supplying no less than ______ GPH at a 100°F temperature rise when fired with (Natural/Propane) gas. 1) The boiler shall bear the ASME “H” stamp and shall be National Board registered (CRN in Canada) for 160 PSI working pressure. 2) The boiler(s) shall be equipped with a factory-installed 125# PSIG ASME Pressure Relief Valve. 3) The boiler(s) shall be design-tested and certified to the ANSI Z21.13 standard

The secret to the stunning performance of the VF Series is its flexibility. The VF is capable of firing from 100% to 25% or a 4:1 turndown ratio. The boiler’s output is based strictly on the current system demand and required BTUs needed to maintain the desired system set point temperature. The VF’s modulating capability is virtually limitless. The VF Boiler sets a high efficiency standard by combining thermal efficiencies up to 88% with a smoother, more energy-efficient overall system operation

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 Rev C 6 of 8 Notes INS7238 Rev C 7 of 8 Revision Notes: Revision A (INS7238 Rev A) reflects the addition of the 1 1/2" valve. Revision B (INS7238 Rev B) reflects the addition of the maintenance instruct

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 temperat

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

This item is available in all modes. -67 to 149°F (-55 to 65°C) BOB. sup j Lj g* occ • Boiler Supply - Current boiler supply water temperature as measured by the boiler supply sensor. This item is available in all modes. 14 to 266°F (-10 to 130°C) BOB. ir r T TAflQ 1 J J OCC D1 E1 F1 • Boiler Target - Boiler target temperature is the temperature the control is currently trying to maintain at the boiler supply sensor +/-1/2 of the differential. This item is available in all modes. —, 14

SL-PS Installation & Operation Manual 3 Technology, installation and commissioning Clamp ring screw connections ¦ Cut the copper pipe to length and deburr. ¦ First, slide the clamp ring nut over the pipe, then slide the clamp ring. ¦ Insert the prepared pipe into the screw connection until its stop is reached. ¦ Tighten clamp ring nut by hand. ¦ Use open-ended wrench to tighten clamp ring screw connection (approx. 33 Ft lb), re-tighten if necessary. ¦ When tightening the clamp ring screw connect