valutazioni - 4, GPA: 4.3
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Facilità d'uso
Make all tubing bends smooth and without deformation. Avoid flexible gas connections. Internal diameter of flexible lines may not provide unit with proper volume of gas. 3. Install a manual main gas shutoff valve at the unit’s gas inlet, outside of the unit. 4. Run pipe or tubing to the unit’s gas inlet. If you use tubing, obtain a tube to pipe coupling to connect the tubing to the unit’s gas inlet. 5. Install a sediment trap in the supply line to the unit’s gas inlet (see FIG. 3-1). 6. Apply a moderate amount of good quality pipe compound (do not use Teflon tape) to pipe only, leaving two end threads bare. 7. Remove seal over gas inlet to unit. 8. Connect gas pipe to inlet of unit. Use wrench to support gas manifold on the unit. 9. For L.P. gas, consult your L.P. gas supplier for expert installation. 10. Ensure that all air is completely bled from the gas line before starting the ignition sequence. Start up without properly bleeding air from the gas line may require multiple reset functions of the ignition control module to achieve proper ignition. TABLE - 3C FITTINGS TO EQUIVALENT STRAIGHT PIPE Diameter Pipe (inches) 3/4 1 1 1/4 1 1/2 2 3 4 5 Equivalent length of Straight Pipe (feet) 2 2 3 4 5 10 14 20 WARNING Do not have any open flame in proximity to the gas line when bleeding air from the gas line. Gas may be present. TABLE 3B SUGGESTED GAS PIPE SIZE FOR SINGLE UNIT INSTALLATIONS MODEL Distance from Meter (in feet) 0 - 50 51 - 100 101 - 200 201 - 300 301 - 500 502 1 1/4" 1 1/2" 2" 2" 2 1/2" 652 1 1/2" 2" 2" 2 1/2" 2 1/2" 752 1 1/2" 2" 2" 2 1/2" 3" 992 2" 2" 2 1/2" 2 1/2" 3" 1262 2" 2 1/2" 2 1/2" 3" 3" 1442 2 1/2" 2 1/2" 3" 3" 3 1/2" 1802 2 1/2" 3" 3" 3 1/2" 3 1/2" 2072 2 1/2" 3" 3" 3 1/2" 4" For each elbow or tee, add equivalent straight pipe to total length from Table 3C. Gas train and controls NOTICE The gas train and controls assembly provided on this unit have been tested under the applicable American National Standard to meet minimum safety and performance criteria such as safe lighting, combustion and safety shutdown operation. COMBINATION VALVE DOWNSTREAM TEST VALVE TO BURNERS 502 MODEL COMBINATION VALVE DOWNSTREAM TEST VALVE TO BURNERS 2072 MODEL Figure 3-2_Typical Pool Heater Gas Train Drawing Combination gas valves These units fire in multiple stages of burner input. Each stage of burner operation has a combination gas valve(s) to cycle the gas supply on and off and regulate gas to the burners. Each combination valve consists of a gas regulator and two valve seats to meet the requirements for redundant gas valves. The valve has a gas control knob that must remain in the open position at all times when the unit is in service. The gas control valve has pressure taps located on the inlet and discharge sides of the valve. Manifold pressure is adjusted using the regulator located on the valve. A manifold gas pressure tap for each burner stick is located on the discharge side of the valve. The manifold pressure is preset at the factory and adjustment is not usually required. If you must adjust regulator pressure, follow the instructions in the Copper-fin2 Service Manual. Venting of combination gas valves The combination gas valve/regulator used on all units is equipped with an integral vent limiting orifice per ANSI Z21.78. The vent limiter ensures that the volume of gas emitted from the valve in the event of a failed gas diaphragm does not exceed the maximum safe leakage rate allowed by agency requirements. 33 3 Gas connections (continued) SUPPLY INLET PRESSURE TAP INLET GAS VALVE CONTROL KNOB OUTLET Installation & Operation Manual Figure 3-3_Measuring Gas Supply Pressure at Combination Gas Valve 13. Remove the manometer and related fitting from the “inlet” side of the gas valve, replace 1/8" hex plug in gas valve and tighten. 14. Turn on gas supply at the manual valve, turn on L.P. gas at the tank if required. 15. Turn the power switch to the “ON” position. 16. Turn the gas valve knob to the “ON” position. 17. Set the electronic temperature control or thermostat to call for heat. Combination gas valve/regulators equipped with integral vent limiters are not required to have vent or relief lines piped to the outdoors. The termination of the vent limited opening on the combination gas valve/regulator complies with the safety code requirements of CSD-1, CF-190(a) as shipped from the appliance manufacturer without the installation of additional vent lines. Checking gas supply pressure Use the following procedure to check gas supply pressure. 1. Turn the main power switch to the “OFF” position. 2. Turn gas valve knobs to the “OFF” position. 3. Shut off gas supply at the field-installed manual gas cock in the gas piping to the unit. If fuel supply is L.P. gas, shut off gas supply at the tank. 4. Remove the 1/8" hex plug, located on the “inlet” side of the gas valve. You may also use a tapping on the field-installed main manual gas cock or gas piping. Install a fitting in the inlet pressure tapping suit...
Questo manuale è adatto anche per i modelli :Piscine - COPPER-FINN2 2072 (4.68 mb)