Utica Boilers CuB Series Manuel

Engineer:____________________________________________

Project Name:________________________________________

Project Location:______________________________________

Contractor:___________________________________________

APPLICATION:  

Modulating Gas fired water Combi boiler for indoor installation. Approved for closet or alcove installations. For 

use with natural or liquefied petroleum (LP/Propane) fuel gases, LP conversion kits available as option. Wall 

mounted – optional floor stand available. All boilers are factory assembled with controls and wiring and test 

fired to ensure dependable performance. Boiler shall be certified for Category I and Category III applications.

Copper tube heat exchanger is manufactured and tested in accordance with American Society of Mechanical 

Engineers (ASME) and certified by Canadian Standards Association (CSA). Copper tube heat exchanger is 

tested for maximum allowable working pressure of 43.5 psig in accordance with ASME boiler and pressure 

vessel code, section IV, rules for construction of heating boilers. A 30 psig safety relief valve is shipped 

standard.

• Wall Mount Bracket
• Boiler is equipped with internal stainless steel brazed plate heat exchanger for potable hot water and 

automatic 3 way diverting valve to allow Domestic Hot Water Priority operation.

• Boiler includes internal pressure activated bypass loop to eliminate the need for primary secondary piping 

and includes internal factory installed and wired circulator pump.

• Digital Boiler Control:

 

X

Control system is PCB integral controller with LCD digital display that includes graphical interface. 

 

X

Control senses supply water temperature and adjusts the boiler firing rate to deliver amount of heat 

needed.

 

X

Control can sense and display supply water temperature and indicate by icon when boiler is in central 

heating or domestic water mode.

 

X

Control has selectable Economy/Comfort mode. Comfort mode will maintain brazed plate heat 

exchanger at between 104°F to 140°F to speed DHW delivery.

 

X

Control can accept wired Outdoor Air sensor and has field selectable reset curves. 

 

X

Control continuously monitors boiler during operation and standby modes. Control receives input data 

from dual temperature sensor, air pressure transducer, and optional outdoor air temperature sensor 

(when used) to adjust modulation rate accordingly.

 

X

Control can power and accept input from field supplied LWCO device.

P/N 240010782 REV C, [02/2015]

2201 Dwyer Ave.    Utica, NY 13501     www.UticaBoilers.com