42
Installation & Service Manual
6
Operation and startup
REMOVAL OF COMBUSTION CHAMBER
LINING OR BASE PANELS:
• Avoid breathing dust and contact with skin and eyes.
•
Use NIOSH certified dust respirator (N95)
(http://www.cdc.gov/niosh/hompage.html).
• Lightly mist with water (only those areas being handled)
the combustion chamber lining or base insulation to
prevent airborne fibers.
• Remove combustion chamber lining or base insulation
from the appliance and place it in a plastic bag for
disposal.
• Wash potentially contaminated clothes separately from
other clothing. Rinse clothes thoroughly.
• NIOSH stated First Aid:
Eye:
Irrigate immediately.
Breathing:
Fresh air.
4. Flue Gas Passageways Cleaning Procedures: Any sign of
soot at burners indicates a need for cleaning. The
following cleaning procedure must only be performed
by a qualified serviceman or installer. Proper service is
required to maintain safe operation. Properly installed
and adjusted appliances seldom need flue cleaning.
All gaskets on disassembled components must be replaced
with new gaskets on reassembly. Gasket kits are available
from your distributor.
a.
Turn off main power to appliance.
b.
Turn off main manual gas shutoff to appliance.
c.
Remove the front outer jacket panels.
d.
Remove gas valve from the manifold.
e. Remove screws from manifold mounting
brackets. Pull manifold(s)/ orifice assembly away
from burners. Remove hose from burner tap.
f.
Remove mounting screws from each burner and
slide burner out toward front of appliance. Use
caution to prevent damage to burner gaskets,
refractory, hot surface igniter or wiring.
g.
Remove soot from burners with a stiff bristle
brush. Damaged burners or burner gaskets must be
replaced.
Heat exchanger cleaning
5. Check the heat exchanger surface for sooting. If
present, heat exchanger must be cleaned and problem
corrected. Proceed as follows.
a.
Remove manifold/orifice assembly as described in
steps “a” through “e” in “Burner Removal”.
b.
Disconnect wiring from hot surface igniter and
hose from burner tap.
c. Remove inner combustion chamber door
mounting screws, tilt slightly and slide door
assembly out toward front of appliance. Use
caution to prevent damage to refractory, hot
surface igniter, hose and wiring.
d. Check “V” baffles on top of heat exchanger.
Remove and clean if necessary.
e.
Remove soot from heat exchanger with a stiff
bristle brush. Use a vacuum to remove loose soot
from surfaces and inner chamber.
f.
Carefully reinstall combustion chamber door,
jacket panels, dividers, burners, manifolds wires and
hoses. Use new gasket material for proper air seal.
g.
Reassemble and test for gas leaks.
h.
Cycle appliance and check for proper operation.
An appliance installed in a dust or dirt contaminated
atmosphere will require cleaning of the burners on a 3
to 6 month schedule or more often, based on severity
of contamination. Contaminants can be drawn in with
the combustion air. Non-combustible particulate matter
such as dust, dirt, concrete dust or dry wall dust can
block burner ports and cause non-warrantable failure Use
extreme care when operating an appliance for temporary
heat during new construction. The burners and fan will
probably require a thorough cleaning before the appliance
is placed in service.
6. Combustion Air Fan: The combustion air fan should be
checked every 6 months. Clean as required when
installed in a dust or dirt contaminated location.
7. Water Circulating Pump: Inspect pump every 6 months
and oil as necessary. Use SAE 30 non-detergent oil or
lubricant specified by pump manufacturer.
8. Keep appliance area clear and free from combustible
materials, gasoline and other flammable vapors and
liquids.
9. Check frequently to be sure the flow of combustion and
ventilation air to the appliance is not obstructed.
Figure 6-5 Gas Train Drawings
M-9
F-9
Summary of Contents for Efficiency-Pac EW 150 -- 300
Page 47: ...47 Notes ...