Attach Hold-Down Plate (Recessed Mount); Install Ceiling Plate Spacers; Install Surface Vent - Williams 5508332 Owner's Manual

General Vent Installation (cont.)
Discard the three (3) square gaskets, as they are not used
when furnace is surface mounted.
INSTALL CEILING PLATE SPACERS
(SURFACE MOUNT)
Slide header plate over the furnace flue extension with the
junction box entering the opening in top of furnace.
Refer to Fig. 15.
Refer to Fig. 16.
Only one (1) plate spacer is required for surface mount-
ing within a single story dwelling.
Fasten to matching holes in the furnace top through holes
"A" in the header plate, using two (2) #8 x 3/8 inch screws
provided.
Fasten the hold-down plate or starter plate to the top of
the header plate using holes "B" in the header plate.
Cut 2 inches off each end of plate spacer.
Drill two (2) 3/16 inch holes in each end of plate spacer.
See Fig. 18, page 15.
Fasten plate spacer to wall by nailing through one (1)
drilled hole in each end, into the wall board and ceiling
plate.
j ,,g,,
INSTALL CEILING PLATE SPACER
(RECESSED MOUNT)
Refer to Fig. 17.
Two ceiling plate spacers are in the B/W vent kit. They
must be fastened along each long edge of the ceiling hole
to hold the oval vent pipe in the center of the hole.
ALL MODELS
ATTACH HOLD-DOWN PLATE (RECESSED MOUNT)
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.
NOTE
Header plate should already be attached to wall studs. See
ATTACH HEADER PLATE, page 10 and 11.
Fasten hold-down plate to top of header plate using two
(2) screws provided.
"_" r,_4_3V2 CENTERED ON
!1 a/w VENT
TOP ___ HOLE IN
HOLD-DOWN OR
RTER PLATE
r_ (NOT SUPPLIED)
HEADER PLATE
SIDE
CEILING PLATE
FRONT
CEILING PLATE SPACERS - RECESSED MOUNT
_ 14 318
INSTALL SURFACE VENT (SURFACE MOUNT)
NOTE
For surface mounting, it will be helpful to complete the gas
piping supply to the furnace before installing the vent pipe.
See section GAS SUPPLY & PiPiNG, page 17.
Carefully move the furnace into position under the ceiling
cutout.
Insert first lengths of oval, double wall vent pipe up through
the ceiling cutout.
--14 m