Monterey PLUS Owner's Manual

Installing Your Furnace
Attaching Your Furnace
Clear the wall recess of all debris, remove any wood or
plaster. Stand the furnace in front of recess, holding the furnace
body at an angle. Insert flue collar into the opening in the
header plate and raise furnace carefully (Figure 9). Swing
bottom of furnace into wall recess with front edges of legs flush
with 2x4 floor plate. In the holes provided, nail through the legs
into studs or floor plate (Figure 10).
Do not damage gasket glued to underside of header plate when
placing furnace in wall. Avoid nailing the legs so tightly that
it disturbs the inner furnace casing. Do not try to force the furnace
into a smaller-than-specified recess.
If an existing gas line is preventing the installation of a Williams
Monterey unit, a cut-out may be made using tin snips on one of
the legs to clear this existing gas line. This cut-out will be on one
side of the unit on the rear side of the leg and only if necessary.
REAR OUTLET KIT INSTALLATION (OPTIONAL)
If a Rear Outlet Register Accessory is used, the following
procedure must be completed before placing furnace body into
wall recess. (Figure 11). Attach speed nuts to outer shield and
remove knockout plates from both the outer and inner shields as
follows:
1. Punch in the lower corners with a screwdriver blade.
2. Break the knockout side and bottom connecting tabs by
holding a screwdriver blade sideways against the tab and
striking the head of the screwdriver lightly with a hammer.
3. Swing the plate outward; bend it back and forth to break the
top tabs. Use caution when handling sharp metal edges.
25,000 & 35,000
Btu/hr. Models
Attaching Your Furnace
FIGURE 9 – Insert Furnace
FIGURE
11
-
Remove Knockout Plates
11 -
CAUTION:
Do not install rear outlet kit where
grille may be blocked by a door, curtains, or any
other obstruction
.
FIGURE 10 – Nail Placement
WARNING: Never shear or cut the furnace legs.