Step 17 Perform Spillage Test; Step 18 Check Blower Operation - Lennox EVB125 Installation Instructions Manual

Step 17. SPILLAGE TEST PROCEDURE
(Proper Vent Operation Test):
A fl ue spillage test should be performed as part
of the installation process to test for proper
vent operation.
Perform the Spill Test as Follows:
1) Light the appliance. Adjust fi re to highest fl ame
setting. Allow unit to operate for approximately
15 minutes. Blower should be off.
2) Close all the external doors and windows.
3) Start all the exhaust fans and other appliances
which remove air from the home (clothes dryer,
furnace, etc.).
4) To ensure a valid test, hold a scrap piece of
sheet metal (or other noncombustible material)
between the spill tube and the top of the door
(to prevent the natural convection of the unit
from interfering with the test).
5) Use an open fl ame (preferably a wooden
match) or smoke (cigarette, rope) to determine
if spillage is present. Move the fl ame or smoke
device across the opening of the draft test port
on the front of unit (see Figure 37). If the fl ame
or smoke is drawn into the opening, there is
no spillage. If the fl ame or smoke is blown out
or away from the opening, spillage is present
and corrective action should be taken before
operating the appliance.
Draft Test Port for
Spill Testing
Flame drawn in,
indicates no spillage
Figure 37
If spillage is detected, check the following:
• Check the vent sizing according to
specifi cations, and vent confi gurations.
• Examine entire venting system for faults
such as disconnected joints, damaged
vent sections, or sagging liner.
• Make sure vent and air openings are not
obstructed.
16
If spillage continues, it may be a result of nega-
tive air pressure within the home. To test:
1) Turn off a mechanical devices that were
turned on in step 17, instruction #3 and
retest.
2) Open a window (6" min.) near the insert
and retest.
If spillage continues, The Technician should
contact Technical Services at Lennox Hearth
Products.
Note: Spillage occurs when fl ue gases can
not exit the vent system at an adequate rate
causing it to back up into the dwelling. If
spillage occurs, the heated exhaust spills
out of the draft hood which should result
in tripping the spill switch (see Spill Switch
below) which will shut down the unit. Other
symptoms of fl ue gas spillage at the draft
hood may include condensation on walls and
windows and/or noticeable odors.
SPILL SWITCH - This thermally activated safety
switch will sense the change in temperatrure
and shut down the gas valve in the event of a
severe downdraft or a blocked or disconnected
vent. The switch acts as a safety shut-off to
prevent a build-up of carbon monoxide. If the
fl ue is blocked or has no "draw," the switch will
automaticlly shut off the supply of gas within
5-10 minutes. Tampering with the switch can
result in Carbon Monoxide (CO) Posioning and
Carbon monoxide is a color-
possible death.
less, odorless, highly toxic gas.
WARNING: SPILLAGE CAN RESULT IN
CARBON MONOXIDE POISONING WHICH
MAY LEAD TO DEATH!
Combustion and Ventilation Air
WARNING: THIS APPLIANCE NEEDS FRESH
AIR FOR SAFE OPERATION AND MUST
BE INSTALLED WITH PROVISIONS FOR
ADEQUATE COMBUSTION AND VENTILATION
AIR AVAILABLE TO THE ROOM IN WHICH IT
IS TO BE OPERATED.
Follow CAN /CGA B149 (in Canada) or ANSI
Z223.1 (in the USA) requirements, and any
local codes or regulations of the enforcing
authority.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Air for combustion is drawn in through the
front of the unit therfore, the front of the unit
must be kept clear of any obstructions.
Step 18. CHECK BLOWER SYSTEM
OPERATION
WARNING: THE POWER CORD MUST
BE PLUGGED DIRECTLY INTO A PROP-
ERLY GROUNDED, 120 VOLT, 60 HZ,
3-PRONG RECEPTACLE ELECTRICAL
OUTLET. DO NOT CUT OR REMOVE THE
GROUNDING PRONG FROM THIS PLUG.
IT MUST BE ROUTED TO AVOID CON-
TACT. DO NOT ROUTE POWER CORD
UNDER OR IN FRONT OF APPLIANCE.
When the insert heats up, the blower will auto-
matically be turned on by the fan disc, located
under the fi rebox bottom on the front left side.
It will come on at the speed determined by the
rheostat, located on left surround panel (see
Figure 34). To adjust the blower speed, dial the
rheostat to the desired speed setting. Rotate
the dial down (clockwise), just past the click
(the fi rst ON position) for the highest speed
setting. Turning the knob further clockwise
will provide slower blower speeds. Note: If
the rheostat is not turned "on," the blower
will not operate.
Blower Wiring
120 V AC
Diagram
Power Cord
Black
Fan Disc
Rheostat
Black
Blower
Figure 38
Assembly