typical wiring schematics
TRANSCRIPT
}
}To TT on boiler
To circulator
Input Power
120/1/60
Factory Installed Jumper
6 NO
5 6 NC
4 NC
4 NO
3 H N G
}
} 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
3 H N G5
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: (847) 966-3700 Fax: (847) 965-8379 www.xyleminc.com/brands/bellgossett
Bell & Gossett is a trademark of Xylem Inc. or one of its subsidiaries. © 2012 Xylem Inc. 210711C October 2012