Cabinet Installation; Gas Supply And Piping - Williams 1403622 Owner's Manual

Installation

Cabinet Installation

14036 Series:
Set the cabinet over the furnace body, dropping the rear top
flange between the support legs and wall. Open the cabinet
door and attach the cabinet to the inner casing with two (2)
sheet metal screws. (Figure 10).
FIGURE 10

Gas Supply and Piping

The gas control valve is shipped with a sealed cover over the
gas inlet tapping. Do not remove seal until you are ready to
connect piping.
WARNING: Danger of property damage, bodily
injury or death. Make sure the furnace is
equipped to operate on the type of gas available.
Models designated as natural gas are to be used
with natural gas only. Furnaces designated for
use with liquefied petroleum gas (L.P.G.) have
orifices sized for commercially pure propane gas.
They cannot be used with butane or a mixture of
butane and propane.
22036 / 30036 Series:
Set the cabinet over the furnace body, dropping the rear top
flange into the slot in top of the spacer plate and into the slots
between the support legs and wall. When correctly positioned
side-to-side, a dimple on the rear top flange will slide against
the inside of each support leg. Attach two (2) tension springs
through the bottom flange of the combustion chamber and the
bottom of the cabinet. Fasten the trim strip to the bottom of the
support legs using two (2) sheet metal (short) screws.
(Figure 11).
FIGURE 11
Gas Supply
Minimum gas supply pressure for natural gas to the furnace
control valve is 5 inches water column and must not be more
than 7 inches water column.
Minimum gas supply pressure for L.P. gas to the furnace
control valve must be at least 11 inches water column and
must not exceed 13 inches water column.
Gas pressures and pressures to the burners must not exceed
the rated input and pressure shown on the rating plate. For
natural gas, the manifold pressure should be 4 inches water
column. The manifold pressure should be 10 inches water
column for L.P. gas. An orifice change may be required to suit
the gas supplied.