Combustion Air System; Exhaust System - Snugger SF2300 Installation And Operating Instructions Manual

Prevent possibility of sucking the engine or heater exhaust fumes into the heater.
Prevent the warm air to be directly sucked back into the cold air return.
Use only temperature-resistant hose (flex) for the hot air.
Install protective cover over the heater if there is possibility that the heater may by touched by
passenger (s) or operator when heater is using to prevent personal injury and also protect the
heater from possible damage from cargo or contact with flammable materials.
Install hot air duct in the way so it is protected from possible touching by humans and or heat
sensitive materials.
Install cold air return in the way so it will not suck the air from dirty or contaminated
environment.

Combustion air system

Install the tube of the combustion air intake in such a way that the air intake is protected from
sucking water, snow, ice, dust, hot air, exhaust fumes or any other debris into the combustion
chamber.
Inner hose diameter φ1"(25 mm) max. Length 55"(1.5m), depending on the installation
conditions.

Exhaust System

The flexible exhaust pipe inner diameter of φ15/16 "(24mm) can be shortened to no less
than 8"(0.2m) from the heater to the silencer (muffler) but not longer than a total of 78" (2m)
including muffler; fasten the exhaust silencer (muffler) at suitable position to the vehicle
frame, route the flexible exhaust pipe from the heater to the exhaust silencer and fasten with
hose clamps. Use hose clamps to attach the exhaust flex pipe to the vehicle body.
◆ Safety Instruction
Warning
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