Recommended Installation Positions—Horizontal
Counterflow—Left Side Panel Discharge
A. Air discharge
B. Bottom return duct connection
Alternate Electrical and Gas Line Connections
This furnace has provisions allowing for electrical and gas line
connections through either side panel.
In horizontal applications, the connections can be made either
through the top or bottom of the furnace.
A drain pan must be provided if the furnace is installed above a
The drain pan must cover the entire area under the furnace (and
air conditioning coil, if applicable).
Refer to "Horizontal Applications and Conditions—Drain Trap and
If the furnace is installed in a crawl space, it must be suspended
from the floor joist or supported by a concrete pad.
NOTE: Never install the furnace on the ground or allow it to be
exposed to water. Refer to "Location Requirements and
Considerations—Furnace Suspension" for further details.
PROPANE GAS/HIGH ALTITUDE
Possible property damage, personal injury or death may
occur if the correct conversion kits are not installed. The
appropriate kits must be applied to ensure safe and proper
furnace operation. All conversions must be performed by
a qualified installer or service agency.
This furnace is shipped from the factory configured for Natural
gas at standard altitude. Propane gas installations require an
orifice change to compensate for the energy content difference
between Natural and propane gas.
High altitude installations may require both a pressure switch and
an orifice/spring change. These changes are necessary to
compensate for the natural reduction in the density of both the
gas fuel and the combustion air at higher altitude.
For installations above 7,000 ft (2,133.6 m), refer to your
distributor for required kit(s).
WFD19, WGFM19, WGFM29, WGFD29 Gas Orifice Chart
WFM19 Gas Orifice Chart
Contact the distributor for a tabular listing of appropriate
manufacturer's kits for propane gas and/or high altitude
installations. The indicated kits must be used to insure proper
furnace operation. All conversions must be performed by a
qualified installer or service agency.
Failure to follow these instructions can result in bodily
injury or death. Carefully read and follow all instructions
given in this section.
Upon completion of the furnace installation, carefully
inspect the entire flue system both inside and outside of
the furnace to assure it is properly sealed. Leaks in the
flue system can result in serious personal injury or death
due to exposure to flue products, including carbon
A condensing gas furnace achieves its high level of efficiency by
extracting almost all of the heat from the products of combustion
and cooling them to the point where condensation takes place.
Because of the relatively low flue gas temperature and water
condensation requirements, PVC pipe is used as venting
In Canada, gas furnaces are only certified to 4,500 ft
LPM-05 supports White-Rodgers 2-stage valve only.
LPM-06 supports both Honeywell and White-Rodgers
VENT/FLUE PIPE AND
COMBUSTION AIR PIPE
3.5" W.C. None
10.0" W.C. None
3.5" W.C. None
10.0" W.C. None