Utica Boilers UB95M-200 Installationsanweisungen

See Appendix A for piping examples.

• Packaged boiler set to receive 1¼” NPT  return piping 

from rear of unit with option for left or right return 

connections. 

• Use two furnished dielectric unions at boiler supply and 

return connections between copper system piping and 

boiler. Do not install copper supply and return piping 

directly into aluminum boiler casting due to galvanic 

corrosion between dissimilar metals.

• 1¼” NPT supply piping exits boiler jacket at top of unit.
• Some boilers supplied with circulator pump and 

isolation valves are furnished in a carton inside boiler 

cabinet and can be installed at installer preferred 

location.

Before connecting boiler to heating system, clean and flush 

system thoroughly. Verify system is free of sediment, flux 

and any residual boiler water additives.

Systems having antifreeze not recommended must be 

completely flushed to insure no old antifreeze remains. In 

older systems obviously discolored, murky or dirty water; 

or pH reading outside acceptable range (between 7.0 and 

8.0) are indications system should be cleaned or treated. 

Thoroughly flush system with clean water to remove any 

sediment or contaminants. Sludge and iron oxide deposits 

can cause rapid breakdown of inhibitors.

Flushing with clean water. If chemical cleaners are used, 

use only those recommended for use with aluminum 

boilers. Follow chemical cleaner manufacturer’s instructions 

completely.

 mix different manufacturer’s products.

• When boiler installation is for new heating system, 

install all of radiation units (panels, radiators, 

baseboard, or tubing) and supply and return mains. 

• After all heating system piping and components have 

been installed, make final connection of system piping 

to boiler. 

• Hot water boiler installed above radiation level, or as 

required by the Authority having jurisdiction, must be 

equipped with low water cut off device. This boiler is 

factory equipped with manual reset probe type low 

water cutoff.

• Periodic inspection is necessary per low water cut off 

manufacturers specific instructions.