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for use by heating contractor
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IMPORTANT
Product may not be exactly as shown
5285 874 - 01 03/2015
Operating Instructions and
User’s Information Manual
VITOCROSSAL 300
Vitocrossal 300
CT3 Series
Gas-fired condensing boiler
Heating input: 638 to 3361 MBH
187 to 985 kW
Do not store or use gasoline or other flammable
liquids in the vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
H Do not try to light any appliances.
H Do not touch any electrical switches, do not use
any phone in your building.
H Immediately call your gas supplier from
a neighbor’s phone. Follow the gas supplier’s
instructions.
H If you cannot reach your gas supplier, call the
fire department.
Installation and service must be performed by a
qualified installer, service agency or the gas supplier.
WARNING
Improper installation, adjustment, and/or
operation could cause carbon monoxide poisoning
resulting in injury or loss of life.
This product must be installed and serviced
by a professional service technician who
is experienced and qualified in hot water boiler
installation and gas/oil combustion.
WARNING
If the information in this manual is not followed
exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
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