Step 1
After all brick are loaded, insert the heating elements
between the brick layers, sliding them in until the element
ends embed into the side cutouts of the brick cavity.
3100 Series:
The threaded screw tabs on the wire
connection terminals should point forward.
4100 Series:
The elements MUST be installed so their
threaded screw tabs on the wire connection terminals point
forward and down. If they are installed with the screw
tabs pointing upward, element-to-wiring harness connec-
tions (Figure 6) will be difficult. Be sure the elements are
slid into the brick core properly to ensure correct clearance
between the terminal connections and any surfaces within
the system as shown in Figure 6.
Step 2
Install the front air channel with the air
deflectors (arrow shaped pieces) facing
inward and with the narrow ends of the
deflectors pointing up.
3100 Series:
Place top portion in first.
4100 Series:
Place bottom portion in
first (see Figure 6.)
Step 3
Lower the insulation blankets back into
position, one at a time. Carefully tuck
the sides of the insulation into the edges,
corners, and around the exposed por-
tions of the heating elements to ensure
maximum efficiency.
Step 4
Reinstall the galvanized front panel and
secure it to the Comfort Plus system
using the screws that were originally removed.
3100 Series:
Slide the top of this panel inside the
upper lip of the top painted panel. The bottom
should rest on the outside of the cavity and secure
to the base with screws.
4100 Series:
Slide the bottom of this panel inside
the lower lip of the brick cavity. The top rests on
the outside of the cavity.
Step 5
Carefully route wiring harnesses and connect
them to the heating elements, using screws
provided in the hardware package. Make connec-
tions with screw heads up and threads pointing
down. Element screws should be tightened to 14
inch lbs. Refer to Element Connection (Figure 6)
for proper positioning.
Step 6
The painted front panel can now be installed on
3100 systems. If installing a 4100 system, the
brick core temperature sensor(s) must be installed
prior to putting the painted front panel in place.
HEATING ELEMENT AND AIR CHANNEL INSTALLATION
Comfort Plus
Installation
n
3.05
Installation
ELEMENT INSTALLATION
FIGURE 6
3
4
"
Required Clearance Between
Element Termination and Metal
Panels is 1/2" (3/4" Nominal)
Element Connection
TOP VIEW
HAZARDOUS VOLTAGE: Risk of electric
shock. Can cause injury or death.
w
DO NOT remove the electrical panel
cover while system is energized.
w
Position elements properly to avoid
short circuiting them against metal
surfaces.
w
Protect element lead wires from front
panel screws and any field installed
screws to avoid short circuit.
WARNING
4100 SERIES AIR CHANNEL PLACEMENT
FIGURE 5
20.3"
10.4"
BRICK
CORE
SIDE VIEW
Front Air Channel
Electrical
Panel
Br
ick
S
ide
B
ott
om
Ba
ck
V
iew
Fr
on
t V
iew
