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5.5 Add Water to
the Humidifier
CAUTION
Do not fill the tray while the furnace is in
operation. Close the door after filling. The
humidifier tray and surrounding area are hot
when the furnace is on.
To fill the tray, open the door as shown in the
illustration and pour water into the tray up to the
Max Fill Line using the spout built into the door.
The air will be humidified as it passes over the
water in the tray.
During operation a small amount of
condensation is produced in the flue system
and drains into the humidifier tray.
Max
Fill Line
Humidifier
Tray
Filler Spout: Do not force door open too far.
Close door during operation.
Figure 54
5.6 Adjust Air Flow
Direction
CAUTION
Do not adjust the air flow louvers while warm
air is flowing.
The vertical louvers may be adjusted to move
the air flow more to the right or to the left.
Use a screw driver or similar object to bend
each louver to the desired position.
36
Do not bend repeatedly (no more than 5 times)
or else the louver may break.
The horizontal louvers (which determines the
vertical air flow direction) are fixed and cannot
be adjusted.
Figure 55
5.7 Restart Function
Access
Door
If there is a power failure while the furnace is
on, then the furnace will start automatically
when the power is restored.
PULL
If the furnace fails to ignite, the furnace will
attempt ignition after 1 hour. The "Ignition
Failure" fault code, 11, will appear during that
hour and disappears after a successful ignition.
If ignition fails again, then the fault code will
remain and another attempt to ignite will occur
in 1 hour. The fault code is not stored in the
fault code history.
If the flame is extinguished during forced
combustion then the furnace will attempt
ignition after 1 hour. The "Ignition Failure" fault
code, 11, will appear during that hour and
disappears after a successful ignition. Forced
combustion takes place for about 40-80
seconds after ignition. After this time, the
temperature control logic controls the
combustion.
If the flame is extinguished (burner combustion
failure) while the temperature control logic is
operating the furnace, then the furnace will
immediately attempt ignition. No fault code will
appear.
In summary, if the ignition fails or the flame is
extinguished during forced combustion then the
furnace will attempt to restart after 1 hour. If the
flame is extinguished after this period then the
furnace will immediately attempt ignition.
EX38DT Installation and Operation Manual
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