LG GEN2 Series Installation And Operation Manual page 29

Installation
WARNING
Never drill holes into the roof of the unit. There is
high voltage wiring located between the inner and
outer roof panels. Damage to the wiring could cause
severe bodily harm or death.
Housing size 35 gas furnaces are designed for gas
pressure of 5-13.5 in. w.g. for natural gas (6-in
minimum on single 500 & 600 MBH furnaces) and
11-13.5 in. w.g. for LP. If the gas pressure at the job
location is greater than 13.5 in. w.g., an additional
regulator is required to reduce pressure. For other
models, reference the PVF and PVG IOM.
NOTE