■CAUTIONS
1.Maximum extendable length
FOR BEST ROOM AIR HUMIDITY, KEEP WATER IN THE HUMIDIFIER TRAY.
・13 feet, 2 bends
・The bend where the hose and pipes leave the body is not counted.
・The air intake hose should run along the exhaust pipe.
2. To prevent water condensation
Condensed water may accumulate
here, and cause a blockage preventing combustion. 
CAUTION
Never allow the exhaust pipe to sag, as condensed water may accumulate and cause incomplete combustion.
3. Condensed water formed by combustion, will run back to the unit, and may overflow from the condensation pan if pipes are
3˚ slope(approximate)
longer then 8 feet. Therefore, pipes exceeding these lengths should be made to drain to the outside by giving their horizontal portions 3˚ or more downward and outward slope.
Less than 8 ft.
– 54 –
