Williams AC2030T Owner's Manual page 12

INSTALLING YOUR FURNACE
CLOSE OFF STUD SPACE (IF REQUIRED)
If studs are not on 16-inch centers, cut the hole for the
furnace next to an existing stud and frame in the other
side using a 2x4 and spacer blocks as required. (Figure 6).
FIGURE 6 – CLOSE OFF STUD SPACE
CEILING PLATE
NEW STUD
EXISTING STUD
FLOOR PLATE
CEILING PLATE OPENING
Cut away the ceiling plate between the studs where the
furnace is to be installed. Work from the top in the attic.
If there is no access to the top, remove the wall covering
between the two wall studs all the way to the ceiling. Work
through this opening. Cut out the entire plate so the plate
edges will be even with the inner face of the 2 x 4 studs.
(Figure 7).
INSTALL VENT BASE PLATE (HOLD-DOWN PLATE)
Position base plate on top of header plate and fasten with
screws. Note: Hold down plate is not included.
HEADER PLATE (VENT SUPPORT)
Measure upward 62¼-inches from the top of the floor plate.
Place a mark on each stud at this distance. (Figure 5). Place
the header plate between the studs with the lower edges
even with marks on the studs. Make sure header plate is level.
Locate rear edge of nailing tabs at back of the header. Nail
header plate to the 2 x 4 studs which will center the vent
collar in the wall. (Figure 5).
12
AC2030 / AC3040 TOP VENT GAS WALL HEATER
14 3/8ʺ
EXISTING STUD
SPACER
BLOCKS
AS REQ'D
INSTALL CEILING PLATE SPACER
Nail the ceiling plate spacers either across or in between
the cut out section of ceiling plate. If nailed between, ends
must be bent at 90 degrees. They must be fastened along
each long edge of the ceiling plate hole to hold the oval
vent pipe in the center of the hole. Ceiling plate spacers
preserve structural strength and position oval vent pipe in the
center of the cut out opening. Ceiling plate spacers are not
included. (Figure 7).
FIGURE 7 – CEILING PLATE OPENING
CEILING PLATE
PLATE SPACER
2 X 4 STUD
14 3/8ʺ
CEILING PLATE
SPACERS NAILED
IN BETWEEN
CEILING PLATES
OR ACROSS FACE
IF ACCESSIBLE
2 X 4 STUD