Installation - Williams 4505622A Owner's Manual

INSTALLING YOUR FURNACE

INSTALLATION

1. Lay an outline of the furnace in the selected location,
and draw diagonally from each corner of the outline as
shown in Figure 6.
2. Drive a nail through the flooring at the intersection of
the diagonal lines.
3. Use the nail location as a reference, and examine the
area beneath the floor to assure there are no obstructions
that will prevent the installation of the furnace and
that adequate clearance between the furnace and
the ground can be obtained. If the selected location of
the furnace is appropriate, proceed to step 4.
4. Bore two 1" diameter holes in opposite corners of the
furnace outline. Be sure the holes do not extend
beyond the furnace outline.
5. Insert a compass or sabre saw into one of the 1" diameter
holes and cut along the furnace outline. Cut as straight
and accurately as possible to avoid any possibility the
hole will not fit the furnace or will extend beyond the
outer perimeter of the furnace grille after it is installed.
6. If it is necessary to cut floor joists to install the furnace,
install headers across the cut ends of the floor joists,
and double the floor joists along each side of the furnace
cut-out as shown in Page 11, Figure 7. If you must cut a
girder or beam, construct an adequate foundation
and pillar to support each end of the cut member.
7. If necessary, dig a pit and install a pan in the ground
beneath the furnace to provide the required clearances.
8. Remove the grille from the furnace.
9. Lower the furnace into the floor opening until the
flanges on the furnace cabinet rest on the floor.
10. Fasten the 'furnace in place by driving nails through
the sides of the furnace cabinet and into the floor joists.
11. Refer to Page 12, Figure 10 for the installation of draft
hood collars and the draft hood.
12. Install the (2) draft hood collars and gaskets by
positioning the collars into the (2) rectangular openings
on the furnace, making sure gaskets are facing toward
the furnace.
13. Slip the (2) draft hood collars over the combustion
chamber outlets and engage the collars into the
furnace until the gaskets press tight against the
furnace. Secure the collars to the furnace with (12)
screws previously removed.
14. Check to be sure that the draft hood collars fit snugly
over the combustion chamber outlets.
15. Install the draft hood by positioning the draft hood
with the open side down. Slip it over the draft hood
collars making sure the draft hood collars engage into
the draft hood. Secure the draft hood to the furnace
with (4) screws previously removed.
16. Install the pipe necessary to connect the furnace to
the gas vent or chimney. Be sure to comply with all the
requirements for proper venting as stated in the "Venting
and Chimney Requirements" section of this manual.
10
FLOOR FURNACES
17. Connect the furnace to the gas supply line as specified
by the "Gas Supply and Piping Requirements" section
of this manual, see Page 9, Figure 5.
18. Install the thermostat and connect the thermostat lead
wires to the limit switch and control as shown in
Page 11, Figure 8.
19. Use Williams thermostat P322016 (sold separately) or
any millivolt thermostat.
FIGURE 6 - MARKING FOR FURNACE INSTALLATION