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Venturi Replacement Kit
3
6. Remove and dispose of Blower/Venturi O-ring
3. Installation venturi
1. Verify the threaded connection for the gas piping is
in the correct orientation for re-fitting the gas pipe.
2. Install the new Blower/Venturi O-ring into the
blower.
WARNING
!
Failure to install the new O-ring gasket between the
venturi and the blower will cause an improper seal re-
sulting in a potential risk of a gas leak. A gas leak can
result in substantial property damage, serious injury,
or death.
WARNING
!
Ensure the proper venturi for the model is installed.
Failure to comply will affect input rate and combus-
tion of the boiler which can result in substantial prop-
erty damage, serious injury, or death.
NOTICE
Do not use adhesive on any gaskets or O-rings during the re-
assembly process.
3. Using a 10 mm socket and ratchet, reinstall the
three (3) bolts securing the venturi to the fan as-
sembly
4. Reassemble the gas valve to venturi pipe to the
gas valve and venturi taking care to ensure that the
new gaskets are seated properly before tightening
the nut.
WARNING
!
Failure to install the new gas pipe gasket between the
venturi and the gas valve will cause an improper seal
resulting in a potential risk of a gas leak. A gas leak
can result in substantial property damage, serious in-
jury, or death
5. Install the new gasket and install the venturi inter-
face on the venturi and rotate counterclockwise
until locked into place.
6. Install the air inlet elbow then attach the silicone
tube.
WARNING
!
Failure to properly install the air inlet elbow and at-
tach the silicone tube will affect combustion of the
boiler which can result in substantial property dam-
age, serious injury, or death.
7. Open the manual gas shut off valve to the unit.
Before placing the boiler back into operation, test
all gas connections for leaks and repair if leaks are
found.
WARNING
!
Do not check for gas leaks with an open flame. Use a
bubble test. Failure to test for gas leaks can result in
substantial property damage, serious injury, or death.
4. Combustion Test and Adjustments
NOTICE
The installer MUST perform a complete combustion check
to ensure the following combustion levels are met at high
and low input firing rates and the burner is operating at op-
timum conditions.
WARNING
!
The combustion testing and adjustments must be per-
formed by a qualified installer, service agency or the
gas supplier. All combustion measurements must be
performed with calibrated equipment to ensure prop-
er readings and accuracy.
WARNING
!
Failure to perform a complete combustion test at both
high and low input rates may result in incomplete
combustion and the production of carbon monoxide,
which can cause severe personal injury, death or sub-
stantial property damage.