A.O. Smith VF VB 1000, User Manual

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SAFE INSTALLATION, USE AND SERVICE

APPROVALS

The proper installation, use and servicing of this boiler is extremely important to your safety and the safety of others.
Many safety-related messages and instructions have been provided in this manual and on your boiler to warn you and others of a 

potential injury hazard.  Read and obey all safety messages and instructions throughout this manual.  It is very important that the 

meaning of each safety message is understood by you and others who install, use, or service this boiler.

DANGER indicates an imminently

hazardous situation which, if not avoided,

will result in injury or death.

This is the safety alert symbol. It is used to alert you to

potential personal injury hazards. Obey all safety

messages that follow this symbol to avoid possible

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 which, if not avoided, could result in

minor or moderate injury.

CAUTION used without the safety alert

symbol indicates a potentially hazardous

situation which, if not avoided, could result in

property damage.

WARNING

CAUTION

CAUTION

DANGER

All safety messages will generally tell you about the type of hazard, what can happen if you do not follow the safety message, and how 

to avoid the risk of injury.
The California Safe Drinking Water and Toxic Enforcement Act requires the Governor of California to publish a list of substances known 

to the State of California to cause cancer, birth defects, or other reproductive harm, and requires businesses to warn of potential 

exposure to such substances.
This product contains a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm. This 

appliance can cause low level exposure to some of the substances listed in the Act.

IMPORTANT DEFINITIONS

•  Qualified Installer:  

A qualified installer must have ability equivalent to a licensed tradesman in the fields of plumbing,  

air supply, venting and gas supply, including a thorough understanding of the requirements of the National Fuel Gas  

Code as it relates to the installation of gas fired boilers.  The qualified installer must have a thorough understanding of this instruction manual.

•  Service Agency: 

 A service agency also must have ability equivalent to a licensed tradesman in the fields of plumbing,  

air supply, venting and gas supply, including a thorough understanding of the requirements of the National Fuel Gas  

Code as it relates to the installation of gas fired boilers.  The service agency must also have a thorough  

understanding of this instruction manual, and be able to perform repairs strictly in accordance with the service guidelines  

provided by the manufacturer.

•  Gas Supplier: 

The Natural Gas or Propane Utility or service who supplies gas for utilization by the gas burning  

appliances within this application. The gas supplier typically has responsibility for the inspection and code approval of  

gas piping up to and including the Natural Gas meter or Propane storage tank of a building. Many gas suppliers also  

offer service and inspection of appliances within the building.