8
105717
VENT-FREE NATURAL GAS HEATER
MBN10LA AND MBN6LA
™
Installing Two Mounting Screws
Note:
Wall anchors and mounting screws
are in hardware package. The hardware pack-
age is provided with heater.
Attaching To Wall Stud Method
For attaching mounting screw to wall stud
1.
Drill hole at marked location using 9/64"
drill bit.
2.
Insert mounting screw into wall stud.
3.
Tighten screw until 1/16" space (thick-
ness of penny) is between screwhead
and wall.
Attaching To Wall Anchor Method
Follow instructions below to attach mount-
ing screws to hollow walls (wall areas be-
tween studs) or solid walls (concrete or
masonry).
1.
Drill holes at marked locations using
5/16" drill bit. For solid walls (concrete
or masonry), drill at least 1
1
/
4
" deep.
2.
Fold wall anchor (see Figure 6).
3.
Insert wall anchor (wings first) into
hole. Tap anchor flush to wall.
4.
For thin walls (1/2" or less), insert red
key into wall anchor. Push red key to
“pop” open anchor wings (see Figure 7).
IMPORTANT:
Do not hammer key!
For thick walls (over 1/2" thick) or solid
walls, do not pop open wings.
5.
Tighten two screws until 1/16" space
(thickness of penny) is between
screwheads and wall (see Figure 8).
INSTALLATION
Continued
Figure 8 - Tightening Anchors
1/16"
Space
Thin or
Thick Wall
(thick wall
shown)
Solid Wall
Thin Walls (1/4" to 1/2" thick)
Figure 7 - Popping Open Anchor Wings
For Thin Walls
Figure 6 - Folding Anchor
Placing Heater On Mounting
Screws
1.
Locate two keyhole slots on back panel
of heater (see Figure 9).
2.
Place large openings of slots over
screwheads. Slide heater down until
screws are in small portion of slots.
Figure 11 - Installing Bottom Mounting
Screw
Removing Front Panel Of Heater
1.
Remove two screws near bottom cor-
ners of front panel.
2.
Lift straight up on grill guard until it stops.
Grill guard will slide up about 1/4".
3.
Pull bottom of front panel forward, then
down.
Figure 10 - Removing Front Panel Of
Heater
Installing Bottom Mounting
Screw
1.
Locate bottom mounting hole. This
hole is near bottom on back panel of
heater (see Figure 11).
2.
Mark screw location on wall.
3.
Remove heater from wall.
4.
If installing bottom mounting screw
into hollow or solid wall, install wall
anchor. Follow steps 1 through 5 un-
der Attaching To Wall Anchor Method.
If installing bottom mounting screw
into wall stud, drill hole at marked lo-
cation using 9/64" drill bit.
5.
Replace heater on wall.
6.
Insert bottom anchor screw through
back panel into bottom anchor or drilled
hole (see Figure 11).
7.
Tighten screw until heater is firmly se-
cured to wall. Do not over tighten.
Note:
Do not replace front panel at this
time. Replace front panel after making
gas connections and checking for leaks
(see pages 9 and 10).
Keyhole
Slots
Figure 9 - Location Of Keyhole Slots On
Back Panel Of Heater
