Instruction manual

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MAINTENANCE
Disconnect electrical power and close the manual gas
shut o valve before performing maintenance or severe
personal injury may result!
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
quali ed installer, service agency or the gas supplier
who must read and follow the supplied instructions
before installing, servicing or removing this boiler.
 is boiler contains crystalline silica materials that
have been identi ed as carcinogenic or possibly
carcinogenic to humans when inhaled.
AVERTISSEMENT: Une installation, un réglage, une
modi 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 e ectués par un installateur ou
un service d’entretien quali 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, Ce e chaudière contient
des matériaux qui ont été identi és comme étant
cancérogènes ou pouvant l’ être.
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!
 e ceramic combustion chamber contains crystalline
silica. Wear a tightly   ed dust mask when removing
the burners or heat exchanger to prevent inhalation
of airborne  bers. Crystalline silica  bers have been
identi ed as carcinogenic, or possibly carcinogenic
when inhaled.
 e 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 identi cation.
Burner Inspection And Removal - Figure 20
1. Close the manual shuto valves in the gas supply lines and turn
o 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 combustion 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 shuto valve in the gas supply line and turn
o 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 in 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.  e 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.