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See Figure 30 “ Factory Supplied Piping and Trim Installation”. Install these components prior to connecting boiler to system piping as follows: Figure 0: Factory Supplied Piping and Trim installation 1 1. ALP080 thru ALP285 Boiler Models a. Locate and remove .” NPT x close black nipple, .” NPT black tee, .” MPT x .” FPT Pressure Relief Valve, .” NPT Drain Valve. b. Install close nipple into tee branch, then, screw the assembly into boiler left side front .” tapping making sure tee run outlets are in vertical plane and parallel to boiler side. c. Mount .” MPT x .” FPT Pressure Relief Valve into the tee top outlet. d. Install Drain Valve into the tee bottom outlet. 2. ALP399 Boiler Model a. Locate and remove (2) .” NPT x close black nipples, .” NPT black tee, .” FPT x .” FPT Pressure Relief Valve, .” NPT Drain Valve. b. Install close nipple into tee branch, then, screw the assembly into boiler left side front .” tapping making sure tee run outlets are in vertical plane and parallel to boiler side. c. Install the second close nipple into tee run top outlet. d. Mount .” FPT x .” FPT Pressure Relief Valve into the tee top outlet. e. Install Drain Valve into the tee bottom outlet. 3. ALP080 thru ALP210 Boiler Models a. Locate and remove 1” NPT x 4” long black nipple, 1” x 1” x 1” NPT black tee, 1” x .” NPT black reducing bushing and Temperature & Pressure Gauge. b. Mount the nipple into 1” boiler supply tapping (see Figure 1A), then, install the tee onto the nipple, making sure 1” branch outlet is in horizontal plane and facing the boiler front. c. Install 1” x .” NPT black reducing bushing into the tee branch, then, put in Temperature & Pressure Gauge. 4. ALP285 Boiler Model a. Locate and remove 1.” NPT x 2” long black nipple, 1.” x 1.” x .” NPT black tee, .” x .” NPT black reducing bushing and Temperature & Pressure Gauge. b. Mount the nipple into 1.” boiler supply tapping (see Figure 1B), then, install the tee onto the nipple, making sure .” branch outlet is in horizontal plane and facing the boiler front. c. Install .” x .” NPT black reducing bushing into the tee branch, then, put in Temperature & Pressure Gauge. 5. ALP399 Boiler Model a. Locate and remove 1.” NPT x 2” long black nipple, 1.” x 1.” x .” NPT black tee, .” x .” NPT black reducing bushing and Temperature & Pressure Gauge. b. Mount the nipple into 1.” boiler supply tapping (see Figure 1B), then, install the tee onto the nipple, making sure .” branch outlet is in horizontal plane and facing the boiler front. c. Install .” x .” NPT black reducing bushing into the tee branch, then, put in Temperature & Pressure Gauge. 2 B. Piping System To Be Employed. Alpine (ALP) boilers are designed to operate in a closed loop pressurized system. Minimum pressure in the boiler must be 12 PSI. Proper operation of the Alpine (ALP) boiler requires that the water flow through the boiler remain within the limits shown in Table 11, any time the boiler is firing. Table 11: Flow Range Requirement Through Boiler nOTiCE Failure to maintain the flow through boiler within specified limits could result in erratic operation or premature boiler failure. 1. Near boiler piping must isolate ALP boiler from system piping via closely spaced tees to insure specified flow range through boiler any time the boiler is firing: Boiler Model Boiler Supply Connection, Inch, FPT Boiler Return Connection, Inch, FPT Minimum Required Flow (GPM) @ 35°F DT Boiler Head Loss, Ft. @ 35°F DT Required Flow, (GPM) @ 30°F DT Boiler Head Loss, Ft. @ 30°F DT Required Flow, (GPM) @ 25°F DT Boiler Head Loss, Ft. @ 25°F DT Maximum Required Flow (GPM) @ 20°F DT Boiler Head Loss, Ft. @ 20°F DT ALP080 1 1 4.2 4.8 4.9 6.4 5.8 8.9 7.3 13.4 ALP105 1 1 5.5 7.0 6.4 9.3 7.7 12.8 9.6 19.1 ALP150 1 1 7.9 5.2 9.2 6.6 11.0 8.9 13.8 12.7 ALP210 1 1 11.1 5.4 12.9 7.1 15.5 9.8 19.4 14.4 ALP285 1. 1. 15.1 5.9 17.7 7.8 21.2 10.7 26.5 16.0 ALP399 1. 1. 21.5 6.1 25.1 7.9 30.2 10.8 37.7 15.9 Notes: Required Flow (GPM) = ** Output (MBH) * 1000/500 * DT ** Output (MBH) - Select Value for specific Boiler Model from Tables 2A or 2B Using boiler antifreeze will result in higher fluid density and may require larger circulators. Alpine Boiler Head Loss vs. Flow 80 105 150 210 285 399 0 2 4 6 8 10 12 14 16 18 20 0 5 10 15 20 25 30 35 40 Flow Rate (GPM) Boiler Head Loss (Feet) a. The flow rate through the isolated near-boiler loop is maintained by factory recommended and installer supplied boiler circulator. b. The flow rate through the isolated near-boiler loop is completely independent of the flow rate through the heating system loop(s). c. The flow rate through the heating system loop(s) is controlled by installer sized/provided system loop circulator(s). d. This piping arrangement can be used either for space heating-only applications or space heating with indirect water heater(s) applications. i. Space heating only - refer to Table 12A and Figures 31A or 31B “Near Boiler Piping -Heating Only” as applicable. ii. Space heating plus ind...

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