Оценок - 6, средний балл: 4.2
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Фрагмент инструкции
By installing two plugged tees as shown in Figure 19, a tank can easily be added if necessary. Obtain Bulletin AE-8403 from your Weil-McLain distributor for tank sizing. HEADER AND SUPPLY RISERS SAME SIZE AS OLD SYSTEM —OR PER ASHRAE RECOMMENDATIONS NOTE: SWING JOINTS NOT SHOWN FIGURE 19 RECOMMENDED PIPING FOR REPLACEMENT STEAM BOILER—ONE-PIPE SYSTEM Section V: Tankless & Storage Heater Hook-up TANKLESS HEATER HOOK-UP Install as shown in Figure 20 (water boiler) or Figure 21 (steam boiler). 268/268V cannot use a tankless heater. 1. Install automatic mixing valve. 2. Install flow regulating valve. Size according to intermittent draw of heater as shown in Table VI. 3. Operating control with a small differential scale is recommended. Install in temperature control tapping in heater plate. 4. In hard water areas, it is advisable to soften cold domestic supply water to tankless heater to prevent lime build-up. FIGURE 20 TANKLESS HEATER PIPING (WATER BOILER) TABLE VI STEAM AND FORCED HOT WATER BOILER TANKLESS HEATER RATINGS BoilerB Size Heater No. ‘Intermittent Draw GPM 100°F. Average Temp. Rise *‘Continuous Draw GPM 100®F Temp. Rise Inlet and Outlet Tappings Temp. Control Tapping WATER 368/368V E-624 3.00 2.00 1/2" 3/4" 468/468V E-624 3.25 2.70 1/2" 3/4" 568/568V E-624 3.25 3.30 1/2" 3/4" 668/668V E-626 3.50 4.00 1/2" 3j4" 768/768V E-632 4.25 4.60 1/2" 3/4” 868-968 E-632 4.50 4.75 1/2" 3/4" STEAM 368 35-S-29 3.00 2.00 3/4" 3/4" 468 35-S-29 3.25 2.70 3/4" 3/4" 568 35-S-29 3.50 3.30 3/4” 3/4" 668 35-S-29 3.75 4.00 3/4" 3/4" 768-968 35-S-29 4.00 4.60 3/4" 3/4" Weil-McLain ratings based on 60 PSIG domestic water pressure at heater. * Gallons of water per minute heated from 40° to 140°F. with 200°F. boiler water temperature. * * Continuous draw—no recovery period. ■ Not available on 268/268V boilers. STORAGE HEATER HOOK-UP (forced hot water boiler only) 62-2-E Storage Heater cannot be used with 268/268V thru 568/568V forced hot water boilers or any size steam boiler. 1. Locate tank as high as possible above boiler. 2. Vertical type storage tank can be used if bottom of tank can be located above top of boiler. 3. To provide gravity circulation: a) Horizontal supply from heater to tank must pitch upward 1 inch for each 10 feet of piping. b) Horizontal return from tank to heater must pitch downward 1 inch for each 10 feet of piping. 4. Locate return piping above storage heater. 5. Use as few elbows and pipe fittings as possible TABLE VII STORAGE HEATER RATINGS Boiler Size* Storage Heater Number 180° Boiler Water Heater Capacity Gallons 40*-140* Rise 212° Boiler Water Heater Capacity Gallons 40®-140° Rise 668-968 668V-768V 62-2-E 50 in 3 Hours 70 in 3 Hours Recommended Storage Tank 50-90 Gallons 75-125 Gallons *No. 62-2-E storage heater cannot be used with 268/268V through 568/568V water boilers or with any steam boilers. FIGURE 21 TANKLESS HEATER PIPING (STEAM BOILER) Section VI: Non-packaged Boilers—Control & Burner Installation WARNING Failure to properly install, pipe and wire boiler controls may result in severe damage to boiler, building and personnel. WATER BOILER CONTROLS 1. Install control where shown on tapping table, page 5. STEAM BOILER CONTROLS 1. Connect a low water cut-off to gauge glass tappings K1 and K2. Refer to Figure 23. Follow instructions packed with control. Pipe drain near the floor or floor drain. 2. Install the pigtail syphon, pressure gauge and steam pressure limit control. See Figure 23. OIL BURNER For B-68/68V boiler: 1. Place gasket over end of air tube. 2. Loosely screw three mounting bolts into boiler mounting plate. 3. Mount burner. 4. Tighten mounting bolts. For A-68/68V boiler: 1. Secure universal mounting flange and gasket to burner mounting plate. Use three bolts provided. 2. Position burner so it is level to V-k° tilt downward. Air tube should be flush to V4 inch recessed from inside wall of combustion chamber. NIPPLE FOR HIGH LIMIT PRESSURE CONTROL ¿X 5 NIPPLE * (BRASS) ¿TEE (BRASS) 4X9O0 SYPHON ¿TEE (BRASS) ¿X 5 NIPPLE 2 (BRASS) V-STEAM GAUGE ^STREET ELL 90°- ¿X3NIPPLE (BRASS) £ STREET ELL 90°-^ L LOW WATER 4 CUT-OFF *67 WP FIGURE 23 STEAM CONTROLS Section VII: Wiring & Fuel Line Piping WIRING For your safety, turn off electrical power supply at service entrance panel before making any electrical connections to avoid possible electrical shock hazard. Wiring must comply with the National Electrical Code and any additional national, state, or local codes. See wiring diagram, page 15 for proper wiring. All safety circuit wiring must be N.E.C. Class 1. For any additional electrical safety controls, use No. 14 gauge wire. Electrical supply wiring to burner should be No. 14 gauge or heavier with fused disconnect switch. Be sure boiler is properly grounded at switch box. FUEL LINE PIPING Refer to separate burner manual and any local or national code requirements which may apply to sizing and installing...
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