Lochinvar 000 - 500 User Manual

5.

Local codes may require a back flow preventer or
actual disconnect from city water supply when
glycol antifreeze is added to the system.

In hard water areas, water treatment should be used to
reduce the introduction of minerals to the sys 

tem.

Minerals in the water can collect in the heat exchanger
tubes and cause noise on operation.  Excessive build up
of minerals in the heat ex 

chang 

er can cause a

non-warrantable failure.

Listed below are items that must be checked to en sure
safe reliable operation.  Verify proper op er a tion after
servicing.

1.   Examine the venting system at least once a year.

Check more often in the first year to de ter mine
in 

spec 

tion interval.  Check all joints and pipe

connections for tightness, corrosion or
deterioration. Clean louvers and/or screens in the
combustion air intake system as required.  Have
the entire system, including the venting system,
periodically inspected by a qualified service
agency.

2.   Visually check main burner flames at each start up

after long shutdown periods or at least every six
months.  

a.  Normal Flame: A normal flame is blue, with

slight yellow tips,  with a well defined inner
cone and no flame lifting.

b. Yellow Tip: Yellow tip can be caused by

blockage or partial obstruction of air flow to
the burner(s).

c. Yellow Flames:  Yellow flames can be caused

by blockage of primary air flow to the
burner(s) or excessive gas input.  This
condition MUST be cor rect ed immediately.

d. Lifting Flames: Lifting flames can be caused

by over firing the burner(s) or excessive
primary air.

If improper flame is observed, examine the venting
system, ensure proper gas supply and ad e quate supply
of combustion and ventilation air.

3. 

Combustion Air Adjustment:  This ap pli ance uses
an atmospheric combustion process.  Combustion
air is provided to the burners by the gas injection
pressure into the venturi of the burn 

ers.  The

burners do not have an adjustable air shutter.
Ad e quate combustion air must be supplied to the
room where the appliance is installed to ensure
proper burner operation.  Check frequently to be
sure the flow of com bus tion and ventilation air to
the unit is not obstructed.  When the main burn ers
light, observe the burn er flame.  Flames should be
light blue in color with slight yellow tips; flames
should be settled on burner head with no lifting
when supplied with correct vol ume of combustion
air.

4.  Flue Gas Passageways Cleaning Pro ce dures: Any

sign of soot around the outer jacket, at the burn ers
or in the areas between the fins on the cop per heat
exchanger indicates a need for cleaning.  The
following cleaning procedure must only be
per formed by a qualified serviceman or installer.
Prop 

er service is required to maintain safe

operation.  Properly installed and ad 

just 

ed

appliances sel dom need flue cleaning.

All gaskets on disassembled components must be
replaced with new gaskets on re as sem bly.  Gasket kits
are available from your distributor.

Label all wires prior to dis 

con 

nec 

tion when

servicing controls.  Wiring errors can cause
improp er and dangerous operation. 

 CAUTION

 WARNING:  The area around the burners is hot and direct contact could result in burns!