Camus Hydronics VTech 0499 - Part 9 - Service;Maintenance; 9.1 Examine the Venting System - Annual; 9.2 Combustion Air Blower - Annual; 9.3 Burner Maintenance - Annual

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Part 9 – Service/Maintenance
Listed below are items that must be checked periodically to
ensure safe reliable operations. Verify proper operation after
servicing. Before doing any service to the appliances please
ensure these two steps are taken:
 Turn off main electrical power to the appliance.
 Shut off gas at the main manual gas valve.
Check frequently to be sure that the flow of combustion and
ventilation air to the appliance is not obstructed. Combustion and
ventilation air must be provided to the mechanical room with
openings sized per the requirements of the CSA B149.1-15 and
CSA B149.2-15 or National Fuel Gas Code. The optional outdoor
air kit brings combustion air from the outdoors directly to the
appliance.
CAUTION
KEEP APPLIANCE CLEAR FROM COMBUSTIBLE
MATERIALS; DO NOT STORE GASOLINE AND OTHER
FLAMMABLE VAPORS AND LIQUIDS IN THE PROXIMITY
OF THE APPLIANCE.
CAUTION
It is important that all gas appliances to be serviced by a
CAMUS trained service technician. It is in your own interest
and that of safety to ensure that all local codes, and all the
“NOTES” and “WARNINGS” in this manual are complied with.
To service or adjust this appliance, it is imperative that the
CAMUS trained service technician utilize a combustion
analyzer to read CO
2
, CO and flue pressure according to
CAMUS Hydronics recommendation.
CAUTION
Label all wires prior to disconnection when servicing controls.
Wiring errors can cause improper and dangerous operation,
verify proper operation after servicing.
NOTE
All gaskets/sealant on disassembled components or jacket
panels must be replaced with new gaskets/sealant on re-
assembly. Gasket and sealant kits are available from the
factory
9.1 – Examine the Venting System – Annual
Examine the venting system at least once a year. Check more
often in the first year to determine inspection interval. Check all
joints and pipe connections for tightness, corrosion or
deterioration. Flush the condensate drain hose with water to
clean. Clean screens in the venting air intake system as required.
Have the entire system, including the venting system,
periodically inspected by a qualified service agency. A qualified
service technician should follow this procedure when inspecting
and cleaning the tank and vent pipe.
 Turn off electrical power and main manual gas shut-off and
allow appliance to cool down.
 Remove the vent pipe running to the chimney and check heat
exchanger, vent and chimney for obstruction and clean as
necessary.
CAUTION
When the vent system is disconnected for any reason it must
be reassembled and resealed according to the venting
manufacturer’s instructions.
9.2 – Combustion Air Blower – Annual
The combustion air blower should be inspected annually to
ensure it is not blocked with dust or debris. The fan opening
should be inspected for signs of contaminants or any other air
restriction. If dirt and dust are built up on the blower inlet, the filter
should be inspected and the blower and tank should be cleaned.
9.3 – Burner Maintenance – Annual
The burner should be removed for inspection and cleaning on an
annual basis. An appliance installed in a dust or dirt filled
environment will require inspection and cleaning on a more
frequent schedule. The fan assisted combustion process may
force airborne contaminants such as dust, dirt, concrete dust, or
drywall dust contained in the combustion air into the burner. With
sustained operation, non-combustible contaminants may reduce
burner port area, reduce burner input or cause non-warrantable
damage to the burner.
9.3.1 – Burner Removal
Access to the burner will require the following steps:
 Remove the top cover.
 Disconnect the gas supply connection to the fan inlet.
 Disconnect the fan motor power wires at the harness.
 Remove the hot surface igniter and the flame sensor.
 Remove the sensing tubes from the gas valve to the
combustion air fan.
 Remove the nuts holding the fan assembly to the tank
and remove the fan assembly. On occasion the red
silicone gasket may adhere to the underside of the fan’s
flange. Carefully pry the flange away from the gasket
before removing the fan assembly.
 With the blower removed the burner can now be lifted
vertically out of the tank cavity. A graphite-backed
ceramic paper gasket is located directly under the burner
flange. This gasket must be replaced if it is damaged.
 Use care to prevent damage to the knitted metal fiber of
the burner surface.
 Check all gaskets and replace as necessary. Gaskets
affected by heat will not reseal properly and must be
replaced.
 To reinstall the burner, follow these steps in the reverse
order.
 Insert the igniter and sensor before doing the final
tightening on the fan mounting nuts.
 Evenly tighten the nuts (specified at 3 Ft.lbs).
NOTE
When the combustion air fan is removed for any reason, the
inlet to the burner tube must be covered, to prevent further
foreign objects from falling into the burner. Always look
inside the burner to check for dents. Do not place a burner
back into operation if the inner distribution screen has been
dented during the service operation. Use care when
removing and handling the burner, Sharp objects or impact
may damage or tear the metal fiber surface rendering the
burner unfit for service.
9.3.2 – Burner Cleaning – As Required
Remove any visible dust or dirt blockage from the surface of
the burner using water from a garden house. Wash the burner
with low pressure water only. Never wipe or brush the surface
of the burner. Never clean with high pressure water or air.