Navien NCB300-28K, Service Manual

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Service
Manual
Model
NCB300-28K
NCB300-37K
NCB300-41K
Keep this manual near this boiler for future reference
whenever maintenance or service is required.
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