Vent System - RBI Spectrum series Installation And Operation Instructions Manual

Combustion Chamber Inspection
1. 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 show
signs of deterioration replace them.
3. Replacement of the combustion chamber panels requires that
the heat exchanger be removed as outlined below.
4. Reinstall the burner drawer as outlined above.
Heat Exchanger Inspection & Cleaning
1. Close the manual shutoff valve in the gas supply line and turn
off electrical power to the boiler/water heater.
2. Close the shut off valves in the inlet and outlet piping. Relieve
the system pressure from the boiler/water heater by carefully
opening 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 the
unit. On outdoor units remove the rear jacket panel.
8. Remove the flue collector.
9. Carefully lift the heat exchanger out of the unit and thoroughly
inspect it.
10. The outside surfaces of the copper tubes should be free of any
soot deposits. A slight black smudge is normal with some types
of gases. Black soot indicates poor combustion. Green deposits
indicate condensation due to low return water temperatures.
In either case the heat exchanger must be cleaned thoroughly
with water and the problem resolved before the boiler/water
heater is returned to service.
11. Replace the cleaned heat exchanger and other components in
the 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 the
following sequence:
1) Middle Top
2) Middle Bottom
3) Right Top
4) Left Bottom
5) Left Top
6) Right Bottom
Heat Exchanger Replacement
1. Sagging or distorted heat exchanger tubes are an indication of
low water flow through the system.
2. A damaged heat exchanger must be replaced and the condition
that caused the damage resolved before the boiler/water heater
is returned to service.
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Finned copper tube gas boilers & water heaters – Boiler Manual

Vent System

Thoroughly inspect the vent system for any signs of blockage,
corrosion or leakage. Immediately replace any unsound vent system
piping.
Controls
Use the "GENERAL OPERATION" and "CHECKING AND
ADJUSTMENTS" 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 per
the manufacturers' instructions. The probe on a probe low water
cut off must be removed, cleaned and inspected at least once
a 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 not
present.
4. The relief valve should not weep or discharge water at normal
system pressure. If it does contact a qualified service technician
to have it inspected. NEVER try to clean or repair the relief
valve! If the valve fails to operate properly, have it replaced!
5. The aquastat high limit controls the maximum water temperature
in the boiler. It should be set at least 20°f, 11°C above the
operator set point. If the water temperature reaches the set
temperature before the demand for heat has been met, the
aquastat high limit should shut the boiler off. The water
temperature should never exceed the maximum set point of
240°f, 116°C. The aquastat high limit cannot be repaired. If it
fails to function properly, replace it.
6. Visually check the pilot and main burner flames to ensure proper
operation, see Figures 11 & 13.
Yellow, floating flames indicate a lack of combustion
air. A lifting flame indicates too much combustion air.
Do not operate the boiler until the problem is solved
or severe personal injury or death may occur!
Main Burner Flames
Figure 13
NORMAL LIFTING
(HARD FLAME) (TOO MUCH AIR)
YELLOW TIPPING YELLOW FLAME
(MARGINAL) (TOO LITTLE AIR)
RIOM-49