Recessed Mount Installation - Williams 2509822A Owner's Manual

WARNING: Danger of illness, bodily injury or death.
Draft hood spillage, with unobstructed vents, indicates
that additional air must be brought into the structure
from the outside. Keep a window open (minimum
2-inches near the appliance until a permanent air duct
is installed.
EXAMPLES OF AIR INLETS AND OUTLETS
CHIMNEY OR GAS VENT
OUTLET AIR
OUTLET AIR
INLET AIR
INLET AIR
Recessed Wall Mount
Installation
Recessed wall mount installation on models: 2509621A,
2519621A, 2539621A, 2559621A, 2509622A, 2519622A, 2539622A,
2559622A, 3509621A, 3519621A, 3539621A, 3559621A, 3509622A,
3519622A, 3539622A.
The maximum recess depth from rear of furnace forward
is 4½-inches.
FIND THE STUDS AND CEILING JOINTS
Use a stud locater or small finishing nails. Repeatedly drive
and remove a nail into the wall in the area of the stud until
it is located. Then find the inside edge of the stud. Leave the
nail at this location.
The other stud should be about 14½-inches from the one
found. Drive finishing nails on the inside of this stud. Draw
wall cutout to required size as shown in Figure 5. If wall studs
are not on 16-inch centers. See "CLOSE OFF STUD SPACE."
(Figure 6).
CUT WALL OPENING
Cut wall opening 14⅜-inches wide and 66⅛-inches high
measured from the top of the floor plate. (Figure 5). All
corners must be square.
INSTALLATION OF REAR OUTLET REGISTER
The optional rear outlet register may be installed when the
VENTILATED
ATTIC
12
TO
ATTIC
100 SQ
INCHES
EACH
WALL
FURN
10 CRAWL
SPACE
MAX
12
VENTILATED
CRAWL SPACE
furnace is recessed into the wall. In new construction, install
the rear outlet plaster ground at the same time you install the
header plate. For existing construction, make the necessary
cutout and install the plaster ground before you install the
furnace. See instructions packed with accessory and Figure 5.
Do not allow wall finish material to project into the furnace
recess.
Do not install rear outlet register where grille may be blocked
by a door, curtains or any other obstruction.
GAS SUPPLY OPENING
A hole must be drilled for the gas line. Decide whether the
gas line will come through the floor or wall. Drill a 1½-inch
hole through the floor or wall as needed. (Figure 5).
CAUTION: Be careful not to damage any furnace
components while making any alternate hole.
FIGURE 5 - RECESSED WALL MOUNT INSTALLATION
B-W VENT
115.V OUTLET
FOR OPTIONAL
BLOWER
9 1/8ʺ
3 3/4ʺ
8 1/8ʺ X 13 1/4ʺ
CUTOUT
REAR
OUTLET
REGISTER
OPENING
A = 4ʺ
MODELS
20,500 &
35,000
BTU/HR.
A = 2 5/8ʺ
MODELS
50,000
BTU/HR.
2ʺ x 4ʺ
PLATE
MONTEREY PLUS TOP VENT GAS WALL HEATER
BASE PLATE
PLASTER TO TOP OF HEADER PLASTER GROUND
REAR REGISTER OPTIONAL FOR SINGLE
BURNER MODELS ONLY
TOP OF HEADER
BOTTOM OF HEADER NAILING FLANGE
PLASTER GROUND
NAIL FLANGE
2ʺ x 4ʺ STUDS
14 3/8ʺ
ALTERNATE
GAS STUB
LOCATION
66 1/8ʺ
2 X 4
FLOOR
PLATE
TOP OF
HEATER
14 3/8ʺ
GAS STUB
LOCATION
FINISHED
FLOOR
11