Recessed Mount Installation - Williams 3508232 Owner's Manual

Installing Your Furnace
FIGURE 7 Grilles Connecting Rooms to
Make Unconfined space
FOR EXAMPLE: Your furnace is rated at 50,000 Btu/hr. The water
heater is rated at 30,000 Btu/hr. The total is 80,000 Btu/hr. You
need two grilles, each with 20-square inches of free opening,
unless connected by horizontal ducts which would require each
grille or opening to have a free area of 40 square inches.

Recessed Mount Installation

FIND THE STUDS (See CAUTION on page 7)
Use a stud locator 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.
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 on Page 13, Fig. 13. If wall studs are not
on 16-inch centers see "CLOSE OFF STUD SPACE." (As shown
on Page 13, Fig. 12).
CUT WALL OPENING
Provide an opening as shown on Page 12, Fig. 10. Work from the
top in the attic to cut away the ceiling plate.
Openings for inlet or outlet air should not be made into attic area if
attic is equipped with a thermostat controlled power vent.
Leave the nail at this
ATTACH HEADER PLATE
MODELS: 5508231; 5508232; 6508631; 6508632
Locate header plate between wall studs at 88½-inches from
finished floor and nail into position with end flanges pointing up.
Make sure header plate is level.
MODELS: 5008631; 5008632
Locate header plate between wall studs at 82½-inches from
finished floor and nail into position with end flanges pointing up.
FIGURE 8 Air from Outdoors or Crawl
Space
FIGURE 9 Free Area
Btu/hr./Input
WARNING: BEFORE INSTALLING: To avoid
electrical shock, turn off electrical circuits that pass
through the wall where you are going to install the
furnace.
Btu/hr.