74D0009
31
Thermal
Sensor
Clip
Figure 42 - Thermal Sensor Installation
Figure 43 - Location of White Dial on Speed Control
OPTIONAL FAN/BLOWER SYSTEM
9. The blowers are to be inserted flat through the engine cutout in
the firebox floor. Slide each blower over to the sidewall location.
Figure 40
10. Turn blowers with discharge vent facing up. Slide the discharge
vent so that it is facing up. Slip discharge vent flange under the
flange bracket flush against the sidewall. Slide blower side tabs
over into side flange.
Figure 41.
The blower is now locked in
place.
11. Attach the speed control to the underside of the firebox using the
supplied velcro, locating as far to the right or left as possible.
12. The thermal sensor clip is located beneath the firebox floor near
the center. Slide the thermal sensor into the clip until it snaps in
place. Make sure the terminals on the thermal sensor are per-
pendicular to the clip.
Figure 42
WARNING:
It is important to arrange the blower wire harness so the
wires can not come in contact with blower fan blades.
13. Connect wiring according to the wiring diagram
Figure 43
.
14. Replace engine in reverse order of removal.
15. Plug in the blower.
16. Re-install firebrick, grate, logs, and glass door in reverse order of
removal.
17. To test blower operation, set the variable speed blower on the
LOW setting. Turn the fireplace on high. The blower should turn
on within 10 minutes.
18. If the blower does not turn on, turn the fireplace off and allow
cooling. Unplug the blower. Using a jeweler’s style screwdriver, turn the white dial on the side of
the variable speed control 1/8 turn counterclockwise.
Figure 43.
This will allow the blower motor
to start at the low speed setting as the fireplace cycles on and off. Retest the blower.
Finishing
1. Re-install the lower access panel.
2. To use the blower, turn the knob on the
speed control clockwise. The blower
should be operating at the highest speed.
Continue to turn the knob until it reaches
the desired speed.
KT504
install blower
11/08
Engine
Cutout
KT504
Figure 40 -
Insert Blowers through
Engine Cutout
KT505
install blower
Start Position
Installed
Position
KT505
Figure 41 -
Blower Installation Position
NOTE:
Some older units are not equipped
with mounting brackets. Velcro and
magnets are used to mount blowers to
sidewall and floor.
Summary of Contents for Direct Vent BLDV400
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