Évaluations - 2, GPA: 4
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Facilité d'utilisation
Locate two bottom mounting holes. These holes are near bottom on back panel of heater (see Figure 12). 2. Mark screw locations on wall. 3. Remove heater from mounting bracket. 4. If installing bottom mounting screws into hollow or solid wall, install wall anchors. Follow steps 1 through 4 under Attaching To Wall Anchor Method, page 12. If installing bottom mounting screw into wall stud, drill holes at marked locations using 9/64" drill bit. 5. Replace heater onto mounting bracket. 6. Place spacers between bottom mounting holes and wall anchor or drilled hole. 7. Hold spacer in place with one hand. With other hand, insert mounting screw through bottom mounting hole and spacer. Place tip of screw in opening of wall anchor or drilled hole. 8. Tighten both screws until heater is firmly secured to wall. Do not over tighten. Note:Do not replace front panel at this time. Replace front panel after making gas connections and checking for leaks (see pages 14-16). Make gas connections and check for leaks before replacing front panel (see pages 14-16). Figure 12 - Installing Bottom Mounting Screws 13 CONNECTING TO GAS SUPPLY NOTICE A qualified service person must connect heater to gas supply. Follow all local codes. WARNING Never connect heater to private (non-utility) gas wells. This gas is commonly known as well-head gas. IMPORTANT: Check gas line pressure before connecting heater to gas line. Gas line pressure must be no greater than 14 inches of water. If gas line pressure is higher, heater regulator damage could occur. CAUTION Use only new, black iron or steel pipe. Internally-tinned copper tubing may be used in certain areas. Check your local codes. Use pipe of large enough diameter to allow proper gas volume to heater. If pipe is too small, undue loss of pressure will occur. Typical Inlet Pipe Diameters 20,000 Btu/Hr Models 3/8" or greater 30,000 Btu/Hr Model 1/2" or greater Installation must include a manual shutoff valve, union, and plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from heater (see Figure 13, page 15). Apply pipe joint sealant lightly to male threads. This will prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged heater valves. CAUTION Use pipe joint sealant that is resistant to liquid petroleum (LP) gas. Install sediment trap in supply line as shown in Figure 13, page 15. Locate sediment trap where it is within reach for cleaning. Locate sediment trap where trapped matter is not likely to freeze. A sediment trap traps moisture and contaminants. This keeps them from going into heater controls. If sediment trap is not installed or is installed wrong, heater may not run properly. 14 CONNECTING TO GAS SUPPLY Continued CHECKING GAS CONNECTIONS IMPORTANT:Hold pressure regulator with wrench when connecting it to gas piping and/ or fittings. Pressure 3/8" NPT Pipe Nipple Heater Cabinet Tee Joint Test Reducer Gauge 1/8" NPT Connection * 1/8" NPT Plug Tap Sediment Pipe Trap Cap Regulator Bushing to Tee Joint Nipple Figure 13 - Gas Connection Manual Shutoff Valve * 3" Minimum Typical Inlet Pipe from Gas Meter (4" W.C. to 10.5" W.C. Pressure) Ground Joint Union * An A.G.A. design-certified manual shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional A.G.A. design-certified manual shutoff valve from your dealer. See Accessories, page 30. WARNING Test all gas piping and connections for leaks after installation or servicing. Correct all leaks at once. WARNING Never use an open flame to check for a leak. Apply a mixture of liquid soap and water to all joints. Bubbles forming show a leak. Correct all leaks at once. PRESSURE TESTING GAS SUPPLY PIPING SYSTEM Test Pressures In Excess Of 1/2 PSIG 1. Disconnect heater and its individual manual shutoff valve from gas supply piping system. Pressures in excess of 1/2 psig will damage heater regulator. 2. Cap off open end of gas pipe where manual shutoff valve was connected. 3. Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter. Continued 15 CHECKING GAS CONNECTIONS Continued 4. Check all joints of gas supply piping system. Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak. 5. Correct all leaks at once. Test Pressures Equal To or Less Than 1/2 PSIG 1. Close manual shutoff valve (see Figure 14). 2. Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter. 3. Check all joints from gas meter to manual shutoff valve (see Figure 15). Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak. 4. Correct all leaks at once. PRESSURE TESTING HEATER GAS CONNECTIONS 1. Open manual shutoff valve (see Figure 14). 2. Open main gas valve located on or near gas meter. 3. Make sure control knob of heater is in the OFF position. 4. Check all joints from manual shut...
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