Aiko CTH3-150 Manuale Utente

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IMPORTANT: If the building has a slight negative 
pressure or corrosive contaminants such as 
halogenated hydrocarbons are present in the air, an 
outside combustion air supply to the heater is 
required. Seal all combustion air pipe joints.

The air supply duct may have to be insulated to 
prevent condensation on the outer surface. The 
outside air terminal must not be more than 1' (31 cm) 
above the vent terminal.

Use of optional outside combustion air is not 
recommended with unvented heaters.

Follow the constraints listed 

Vent Cap 4" (10 cm) for 80,000 Btu/h 
and 115,000 Btu/h models

90502300

Vent Cap 5" (13 cm) for 150,000 Btu/h 
and 200,000 Btu/h models

90502301

Band Clamp

(Recommended)

Flex Hose

(Recommended)

Vent Cap

W

all

For 80 and 115 models,

4" (10 cm) Single Wall Pipe.

For 150 and 200 models,

5" (13 cm) Single Wall Pipe.

Burner

4"

(10 cm)

Min.

Vent Cap 4" (10 cm) for 80,000 Btu/h 
and 115,000 Btu/h models

90502300

Vent Cap 5" (13 cm) for 150,000 Btu/h 
and 200,000 Btu/h models

90502301