Navien NFC-250/175H Installation Manual page 4

Safety Information
The following safety symbols are used in this
manual. Read and follow all safety instructions in
this manual precisely to avoid unsafe operating
conditions, fire, explosion, property damage,
personal injury, or death.
DANGER
Indicates an imminently hazardous situation
which, if not avoided, could result in severe
injury or death.
WARNING
Indicates a potentially hazardous situation
which, if not avoided, could result in injury or
death.
CAUTION
Indicates a potentially hazardous situation that,
if not avoided, could result in property damage.
4 Safety Information
DANGER
If you smell gas:
Do not try to light any appliance.
●
Do not touch any electrical switches or use
●
landline phones.
From a neighbor's phone, call your gas
●
provider and follow their instructions.
If you cannot reach your gas provider, call the
●
fire department.
Do not return to your home until authorized
●
by your gas supplier or the fire department.
Do not use or store flammable products,
such as gasoline, solvents, or adhesives in
the same room or area as the boiler.
The boiler has a main burner flame that can
●
turn on at any time and can ignite flammable
vapors. Vapors from flammable liquids can
explode and catch fire, causing death or
severe burns.
Vapors cannot be seen and are heavier than
●
air. They can travel long distances along the
ground and can be carried from other rooms
to the boiler's main burner flame by air
current.
Keep all flammable products far away from
●
the boiler and store them in approved
containers. Keep the containers closed tightly
and out of the reach of children and pets.