RBI Spectrum series Installation And Operation Instructions Manual

Also see for SPECTRUM Series: Installation and operation instructions Installation & operation manual

Contents

Finned copper tube gas boilers & water heaters – Boiler Manual23Combustion Chamber Inspection1. Remove the burner drawer following the instructions above.2. Inspect the combustion chamber panels using a mirror and light.If any of the combustion chamber panels are damaged or showsigns of deterioration replace them.3. Replacement of the combustion chamber panels requires thatthe heat exchanger be removed as outlined below.4. Reinstall the burner drawer as outlined above.Heat Exchanger Inspection & Cleaning1. Close the manual shutoff valve in the gas supply line and turnoff electrical power to the boiler/water heater.2. Close the shut off valves in the inlet and outlet piping. Relievethe system pressure from the boiler/water heater by carefullyopening the drain valve.3. Disconnect the boiler/water heater from the system piping.4. Remove the left and right headers and mounting studs.5. Disconnect the flue pipe at the boiler/water heater.6. Remove the top jacket panel.7. On indoor units remove the draft hood from the back of theunit. On outdoor units remove the rear jacket panel.8. Remove the flue collector.9. Carefully lift the heat exchanger out of the unit and thoroughlyinspect it.10. The outside surfaces of the copper tubes should be free of anysoot deposits. A slight black smudge is normal with some typesof gases. Black soot indicates poor combustion. Green depositsindicate condensation due to low return water temperatures.In either case the heat exchanger must be cleaned thoroughlywith water and the problem resolved before the boiler/waterheater is returned to service.11. Replace the cleaned heat exchanger and other components inthe reverse order of their removal.12. The torque values for the Spectum header bolts are all the same:17-20 ft. lbs. the bolts should be fastened then tightened in thefollowing sequence:1) Middle Top2) Middle Bottom3) Right Top4) Left Bottom5) Left Top6) Right BottomHeat Exchanger Replacement1. Sagging or distorted heat exchanger tubes are an indication oflow water flow through the system.2. A damaged heat exchanger must be replaced and the conditionthat caused the damage resolved before the boiler/water heateris returned to service.Vent SystemThoroughly inspect the vent system for any signs of blockage,corrosion or leakage. Immediately replace any unsound vent systempiping.ControlsUse the “GENERAL OPERATION” and “CHECKING ANDADJUSTMENTS” sections of this manual for reference.1. Check the thermostat or operating controls for proper operation.2. A float type low water cutoff device must be flushed out perthe manufacturers’ instructions. The probe on a probe low watercut off must be removed, cleaned and inspected at least oncea year. Ensure that the low water cutoffs operate properly. If not,replace them.3. The flow switch contacts must be open when water flow is notpresent.4. The relief valve should not weep or discharge water at normalsystem pressure. If it does contact a qualified service technicianto have it inspected. NEVER try to clean or repair the reliefvalve! If the valve fails to operate properly, have it replaced!5. The aquastat high limit controls the maximum water temperaturein the boiler. It should be set at least 20°f, 11°C above theoperator set point. If the water temperature reaches the settemperature before the demand for heat has been met, theaquastat high limit should shut the boiler off. The watertemperature should never exceed the maximum set point of240°f, 116°C. The aquastat high limit cannot be repaired. If itfails to function properly, replace it.6. Visually check the pilot and main burner flames to ensure properoperation, see Figures 11 & 13.Yellow, floating flames indicate a lack of combustionair. A lifting flame indicates too much combustion air.Do not operate the boiler until the problem is solvedor severe personal injury or death may occur!Figure 13 Main Burner FlamesNORMAL(HARD FLAME)LIFTING(TOO MUCH AIR)YELLOW TIPPING(MARGINAL)YELLOW FLAME(TOO LITTLE AIR) RIOM-49