Navien NCB500-2S/37K Service Manual page 2

WARNING
If the information in these instructions is not followed exactly, a fire or explosion may
result, causing property damage or personal injury.
Do not store or use petrol or other flammable vapours and liquids in the vicinity of this or any
–
other appliance.
WHAT TO DO IF YOU SMELL GAS
–
Do not try to light any appliances.
●
Do not touch any electrical switch; do not use any phone in your building.
●
Immediately call the National Gas Emergency Helpline on (Freephone) 0800 111999 or your gas
●
supplier from a neighbour's phone. Follow the instructions received.
Installation and service must be performed by a Gas Safe registered installer, service agency or
–
the gas supplier.
Condensing Combi Boiler
Service
Manual
Model
NCB500-2S/37K
NCB500-2S+/41K
Keep this manual near this boiler for future reference
whenever maintenance or service is required.