How To Use - Navien KDB-203 STC Instruction Manual

How to use

How to exhaust
Be careful that the oil tank may not run out of
oil completely.
In that case, even though oil is supplied, air
may get in. As a result, ignition failure or
operation failure may occurs.
Untighten the screw for exhaust in the oil
filter by a screwdriver, the air goes out. When
oil flows out, please tighten it
(This is possible only in case that the oil tank is
above the oil filter)
If the oil tank is below the oil filter or the air
flows out enough like the above, lock the
screw for exhaust and remove the air with the
exhaust valve.
In such case, open the exhaust valve turn the
power on to operate the boiler. After about
6-7seconds, the electronic pump exhaust the
air off with noise, and "MISFIRE" lamp on, the
boiler stops.
16