Maintenance - RBI LCD Series Installation & Operation Manual

Gas Pressure Switch
Optional low and/or high-pressure gas pressure
switches will shut down the 24V circuit if excessively
high or low gas pressure exists in the gas train or supply
piping.

MAINTENANCE

WARNING: Disconnect electrical power and
close the manual gas shut off valve before
performing maintenance or severe personal
injury may result!
WARNING: Improper installation, adjustment,
alteration, service or maintenance can cause
property damage, personal injury, exposure to
hazardous materials or loss of life. Installation
and service must be performed by a qualifi ed
installer, service agency or the gas supplier who
must read and follow the supplied instructions
before installing, servicing or removing this
boiler. This boiler contains crystalline silica
m a t e r i a l s t h a t h av e b e e n i d e n t i f i e d a s
carcinogenic or possibly carcinogenic to
humans when inhaled.
AVERTISSEMENT: Une installation, un réglage,
une modifi cation, une réparation ou un entretien
non comforme aux normes peut entraîner des
dommages matériels, des blessures, exposition
à des matières dangereuses ou la mort.
L'installation et l'entretien doivent être effectués
par un installateur ou un service d'entretien
qualifi é ou le fournisseur de gaz qui doivent
avoir lu les instructions fournies avant de faire
l'installation, l'entretien ou l'enlèvement de la
chaudière et les respecter, Cette chaudière
contient des matériaux qui ont été identifi és
comme étant cancérogènes ou pouvant l' être.
CAUTION: Servicing, inspection and adjustment
must be done by a trained technician in accordance
with all applicable local and national codes.
Improper servicing or adjustment can damage the
boiler/water heater!
WARNING: The ceramic combustion chamber
contains crystalline silica. Wear a tightly fi tted
dust mask when removing the burners or heat
exchanger to prevent inhalation of airborne
fibers. Crystalline silica fibers have been
identified as carcinog enic, or possibly
carcinogenic when inhaled.
LCD INSTALLATION AND OPERATION INSTRUCTIONS
The boiler/water heater should be cleaned and
inspected once a year, before each heating season.
Make sure that the burner and ignition components are
free from dust, soot, dirt, corrosion or other deposits
that would impair the boiler/water heater 's performance.
Refer to page 36 for component identifi cation.
Burner Inspection And Removal - Figure 20
1. Close the manual shutoff valves in the gas supply
lines and turn off electrical power to the boiler/water
heater.
2. Remove the front jacket panels.
3. Disconnect the manifold gas piping at the ground
joint union(s). Also disconnect the pressure sensing
lines, pilot tubing and ignition and sensing leads.
4. Remove the manifold(s).
5. Remove the burner(s) from the lower front combus-
tion chamber panel.
6. Inspect the burners for damage or signs of
deterioration. Use a brush or compressed air to
remove any debris from the burner ports.
7. DO NOT install a damaged or badly corroded
burner replace it.
8. Install the burner(s) making sure that the burner
gasket is not torn or deteriorated. If it is replace it.
9. Reassemble the unit following the removal steps in
reverse order.
Heat Exchanger Inspection - Figure 20
1. Close the manual shutoff valve in the gas supply
line and turn off electrical power to the boiler/water
heater.
2. Remove the jacket front panels.
3. Disconnect the gas piping at the ground joint
union(s). Also disconnect the pressure sensing
lines, pilot tubing and ignition and sensing leads.
4. Remove the 1/4 inch nuts and washers holding the
upper combustion chamber front panel in place and
carefully remove it.
5. Inspect the inside and outside of the heat exchanger
for signs of damage, sooting or corrosion.
6. 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 and the problem resolved before the
boiler/water heater is returned to service
7. If there are no signs of damage, sooting or corrosion
reassemble the unit following the previous steps in
reverse order.
8. A badly corroded or damaged heat exchanger must
be replaced, see the Heat Exchanger Removal
section.
Page 31