Utica Boilers UB90-200 Installationsanweisungen

Electrical shock hazard.  Turn OFF electrical power 

supply at service panel before making electrical  

connections.  Failure to do so could result in death 

or serious injury.

  

Use copper conductors only.

Electrically bond boiler to ground in accordance with       

requirements of authority having jurisdiction.  Refer to 

National Electrical Code, ANSI/NFPA 70.

Electric Power Supply
Turn OFF electrical power supply at service panel and boiler 

before making electrical connections.

• Run 120 volt circuit from separate over current protection 

device in electrical service entrance panel, 15 ampere 

circuit. 

• Service switch is pre-wired and located on exterior boiler 

jacket. See Figure 15 for location of service switch, 

junction box, and power supply connection points. 

• Connect black (hot) lead from power supply to either of 

unused brass screws on service switch. 

• Connect white (neutral) lead from power supply to white 

screw on service switch. 

• Connect green (ground) lead from power supply to 

ground (green) screw on service switch. 

• Receptacle on service switch is powered regardless of 

whether switch is on or off, and could be used as power 

supply for external condensate pump if one is used.

• Run 14 gauge or heavier copper wire from boiler to 

grounded connection in service panel or properly driven 

and electrically grounded ground rod.

Service Switch 

Junction Box