www.desatech.com
108998-01E
5
Control
Shaft
Control Knob
Lock Nut
Speed
Control
Bracket
Lower Louver
Hearth Pan
Flange
Bottom Front Refractory
Lower
Flange
Pre-Installed
Bracket
(Direct-Vent
Only)
Figure 7 - Attaching Speed Control to
Direct-Vent Firebox
Control
Knob
Control
Shaft
Lock Nut
MODELS WITh STAMPED PANEL
LOUVERS
Wood, B-Vent and Vent-Free Models
1. Position speed control bracket by inserting
flange of bracket between hearth pan and up-
per flange of louver opening, then seat bottom
end of bracket onto lower flange of louver
opening (see Figure 8).
2. Mount speed control box by placing plastic
control shaft through bottom hole on speed
control bracket. Top screw head on control box
will fit inside top hole on bracket (see Figure
8). Secure speed control to bracket with lock
nut by pushing and turning lock nut with pliers
clockwise until it is tight against bracket.
3. Remove knockout plug from louver panel by
depressing top and bottom retaining clips (see
Figure 1, page 2).
4. Place louver panel, louvers pointing up, back
into framed opening. Align control shaft with
rectangular opening by sliding control bracket
along flange (see Figure 8).
5. Fully seat louver panel into frame opening by
gently pressing along ends until all dimpled
retainers have snapped in place.
6. Place control knob, provided, onto control
shaft (see Figure 8).
Speed
Control
Bottom Rear
Refractory
3. Place the blower against the lower rear wall
of the firebox outer wrapper with the exhaust
port directed upward and the thermodisc
positioned up near the fireplace bottom. The
thermodisc must be oriented near the fireplace
bottom as shown in Figure 6 in order to sense
temperature and properly operate. The blower
will be held in position against the back wall
by the magnets incorporated onto the blower
housing (see Figure 6, page 4).
4. Be certain that all wire terminals are securely
attached to terminals on blower motor and
thermal switch, and that the screw for the
thermodisc bracket and green ground wire is
tight.
5. To mount speed controls, see
Mounting Speed
Control for All Direct Vent Models
(below),
Mounting Speed Control for All Models with
Panel Louvers
(column 2) or
Mounting Speed
Control for All Models with Stamped Face
Louvers
(page 5), depending on your model.
Mounting sPeed
Control
DIRECT-VENT MODELS
1. Mount the speed control box by placing the
plastic control shaft forward through the
mounting opening on the pre-installed bracket
(see Figure 7).
2. While supporting the speed control in the
vertical position, secure the control shaft by
pushing and turning the lock nut with pliers
until it is tight against the mounting bracket.
Place control knob provided on the control
shaft (see Figure 7).
Model BKt wire
asseMBly
Continued
Figure 8 - Attaching Speed Control to
Firebox with Panel Louvers Using Speed
Control Bracket 109892-02
Firebox
Face
