Riverside Hydronics 2000 WB 250A-IF Guía para resolver problemas descargar pdf (Pagina 25)

34-53 08/14

12.5 Startup Procedure

1. Carefully study the burner start-up information included in this manual.

2. Fill system tank with water. Some water appliances may be equipped with an optional air vent. If venting

through the safety valve when filling the appliance, insure gags or fixtures are removed from the safety valve

prior to start-up. Open the safety valve to allow air in the tank to escape.

3. Be sure all connections into the tank are tight, as leaks at tank fittings will damage the insulation.

4. CAUTION: Conduct the following gas train leakage test before start-up, at annual intervals and prior to

investigating the cause of any reported occurrences of delayed ignition.

a. Using an appropriate bubble detection solution, thoroughly coat all gas train pipe connections. If any

bubbles are detected, the leaking connection must be tightened, recoated, and rechecked to assure

stoppage of the leak.

b. Attach a manometer to measure the gas pressure at the manual gas shutoff valve located just upstream

of the gas train. Adjust gas train inlet pressure to the specified value (e.g. 14" W.C.), and tightly close the

gas train manual shutoff valve closest to the burner.

c. Reattach the manometer to the gas train manual shutoff valve at the burner and record the measured

gas pressure in inches of water column (W.C.). Measure gas pressure again after 15 minutes. If gas

pressure has increased 0.5" W.C. or more, the gas leak must be isolated to one or more of the operating

gas valves. (For example, a solenoid actuated gas shutoff valve.) After any leaking valve is replaced, the

reassembled gas train must be leak tested again before start-up is attempted

5. Remove enclosure panel cover on the appliance to expose control circuit. A wiring diagram, included in this

packet, will show the controls used in our circuitry.

6. Visually check that all components are intact and no damage has occurred during transit.

7. Check all connections within the control cabinet. A loose connection could cause intermittent shutdowns.

8. All burners will use a hot surface igniter (HSI) as the ignition source. They may use a single gas pressure

regulator and valves, valve regulator combinations or multiple gas trains.

9. Connect a test meter to the control for reading the flame response signal.

NOTE: Some flame controls read the flame signal in micro amps and some in volts DC.

10. CAUTION: Be sure the tank is filled with water. Dry firing can destroy the appliance.

11. Check the inlet gas pressure before start-up, using a manometer or a 0 to 28" W.C. pressure gauge for inlet

gas pressure. (This is the pressure measured before all components in the gas train.) This manometer must

stay connected throughout the testing, as the inlet pressure must be monitored during the firing of the burner.

Record static pressure; it must not exceed 14" W.C. Pressures above this could cause damage to the

diaphragm in the gas valve or pressure regulator.

12. Connect a second manometer to the manifold test port at the shutoff valve closest to the burner.

13. Turn-off main gas shutoff valve.

14. Disable or jumper out any BMS/BAS or OnTrac boiler control interface to allow independent setup

and adjustment of each boiler.

15. Turn unit on using the rocker switch on the front of the control enclosure assembly. When the burner fails to

light, the flame control will lockout.

Start the burner in Low Fire (Burner combustion must be optimized at both Low and High Fire). To set the

TempTrac control for manual modulation output:

− Push and hold the EXT key for more than 3 seconds. The

LED switches ON and the PS4

parameter is displayed in the upper display, while the PAS label is shown in the lower display.

− Release the key, and insert the password: 3-2-1. The value of the modulation parameter PS4 will be

displayed in the lower display. (nu) stands for not used. Return to this condition for automatic

operation.

− To adjust modulation manually, push the SET key, the value starts flashing. Then use UP or DOWN

keys to modify it. 100 = High Fire; 0 = Low Fire.

− To exit, press SET + UP or wait 30s without pressing any key.

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Riverside Hydronics 2000 WB 250A-IF Guía para resolver problemas Pagina 25

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