Lennox Hearth EBVSTNM-B - Manual (Page 10)

10
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
To open the outside air shutter, open the bottom
control access panel, reach into the gap between
the firebox bottom and the modesty panel, and
pull the outside air control lever all the way out.
The outside air shutter should be fully open when
the fireplace is in use and completely closed
when the fireplace is not being used. Closing
it when not in use will prevent outside cold air
from entering the dwelling.
Venting Action and Safety Limit Operation
If you suspect that the appliance is not vent-
ing properly, or you notice windows fogging
or sweating, you may want to conduct the
following spillage test:
1 - Place unit in its normally-operated condi-
tion, that is, with the glass enclosure panels
in place.
2 - Close all doors and windows in the room.
Turn on all exhaust fans in the house.
3 - Light the appliance.
4 - Wait 15 minutes.
5 - To check for venting action, start by
holding a smoke producing device within
an inch of one edge (side edge, not top or
bottom edge) of one glass enclosure panel.
The smoke should be drawn toward the edge
of the glass enclosure panel. Continue the
test by moving the smoke producing device
along the entire length of both side-edges of
the glass door. Repeat the test for all glass
enclosure panels.
6 - If the smoke is not drawn towards the
edges of the glass door turn off the appliance
and call a qualified service technican.
Manual-Reset Safety Limit Switch
This appliance is equipped with a manual-reset
blocked flue safety limit switch. Refer to Figure
5 for its location. If, during appliance operation,
the flame goes out (independently of the burner
on/off wall switch), it may be due to the opera-
tion of this safety limit switch. First allow the
appliance to cool, then reset the safety switch
by pushing the red reset button on it.
A - To access the blocked flue safety switch
when top radiant panel is not covered with
non-combustible material:
1 - Lift up and remove top radiant panel/eye-
brow assembly on the control side of unit.
2 - Reach between the cabinet side and the
firebox side wall and locate the blocked flue
safety switch.
3 - Push the red reset button on the
switch.
The appliance should then relight and remain
lit. If this does not occur, turn off the appliance
and call a qualified service technician.
Figure 5
B - To access the blocked flue safety switch
when top radiant panel is covered with non-
combustible material:
NOTE: This procedure should only be performed
by a qualified service technician.
1 - Lower bottom hinged panel on the control
side of the fireplace. Remove the glass enclo-
sure panel as described on page 12.
2 - Remove the side baffle securing screws
(5) and then remove the baffle.
3 - Remove the safety switch bracket secur-
ing screws (2), and pull the switch/bracket
assembly through the side panel slot.
4 - Push the red reset button on the switch.
5 - Reinstall the switch/bracket assembly.
6 - Reinstall the side baffle.
7 - Reinstall front glass door.
8 - Raise the bottom hinged panel.
The appliance should then relight and remain lit.
If this does not occur, check unit for a blocked
flue condition.
SAFETY SWITCH LOCATION (EBVST and EBVPF Safety Switch Location Shown)
MANUALLY-RESET
SAFETY LIMIT SWITCH
FIREBOX SIDE BAFFLE
FIREBOX SIDE BAFFLE SECURING SCREW
FIREBOX
SIDE WALL
CABINET
SIDE WALL
TOP RADIANT PANEL
AND EYEBROW
BRACKET
SECURING SCREW
SAFETY SWITCH
WARNING
Do not operate the shutoff lever
unless a complete outside com-
bustion air system has been
installed with your appliance.