Install Instructions

}
}
To TT on boiler
To
circulator
Input
Power
120/1/60
Factory
Installed
Jumper
6
NO
56
NC
4
NC
4
NO
3 HNG
}
}
To
thermostat
T/W T/RC
To ZC
To
circulator
}
}
Input
Power
120/1/60
Remove
Factory
Installed
Jumper
6
NO
6
NC
4
NC
4
NO
3HNG5
TYPICAL WIRING SCHEMATICS
Thermostat Wiring
Figure 1: Cold Start Boiler
When a thermostat calls for heat, the corresponding
circulator will start and the 5-6 NO end switch will
close to enable the boiler.
Figure 2: Tankless Coil (Remove Jumper)
When a thermostat calls for heat, the corresponding
circulator will start when the boiler temperature
reaches the low limit setting
Xylem Inc.
8200 N. Austin Avenue
Morton Grove, Illinois 60053
Phone: [phone]
Fax: [phone]
www.xyleminc.com/brands/bellgossett
Bell & Gossett is a trademark of Xylem Inc. or one of its subsidiaries.
© 2012 Xylem Inc. 210711C
October
2012