Monitor GF 500 Owner's Manual page 6

In areas of heavy snow accumulation, flue pipe may need to be installed higher to avoid being buried.
In open areas with strong wind, a wind break may be necessary to avoid exhaust gases being blown
back into the intake and causing poor combustion.
Long —
Extension'
kit
Must be higher.
Snow
24"min
(61cm)
1
Exhaust pipe must be kept clear of flammable materials.
This heater is not designed to be built in.
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