Utica Boilers UB90-200 Manuel De Montage

Recommend all pipes be cut, prepared, and pre-

assembled before permanently cementing any joint.

Rigid supports cause excess noise in vent piping.

Attach combustion air intake piping to supplied 2” 

coupling on CVI gas valve. Attach vent piping to 

furnished 2” CPVC  vent tee on draft inducer outlet.

All pipe joints are to be water tight.

Working from boiler to outside, cut pipe to required 

length(s).

Deburr inside and outside of pipe. Remove all chips and 

shavings.

Chamfer outside edge of pipe for better distribution of 

primer and cement.

Clean and dry all surfaces to be joined.

Check dry fit of pipe and mark insertion depth on pipe.

After pipes have been cut and pre-assembled, apply 

cement primer to pipe fitting socket and end of pipe to 

insertion mark. Quickly apply approved cement to end 

of pipe and fitting socket (over primer). Apply cement 

in light, uniform coat on inside of socket to prevent 

buildup of excess cement. Apply second coat.

While cement is still wet, insert pipe into socket with 

¼ turn twist. Be sure pipe is fully inserted into fitting 

socket.

Wipe excess cement from joint. Continuous bead of 

cement will be visible around perimeter of properly 

made joint.

Handle pipe joint carefully until cement sets.

Support combustion air and vent piping minimum of 

every 5 feet using pre-formed metal hanging straps. Do 

not rigidly support pipes.  Allow for movement due to 

expansion and contraction. 

Slope combustion air and vent pipes toward boiler 

minimum of ¼” per linear foot with no sags between 

hangers.

Use appropriate methods to seal openings where vent 

and combustion air pipes pass through roof or side 

wall.