Utica Boilers UB90-100 Installationsanweisungen

3

Apply pipe dope to bushing threads. Install gas orifi ce 

assembly turning clockwise into mixer. DO NOT USE 

TEFLON TAPE.

Attach adapter block to gas valve. 

75 MBH: Chose table for correct type of fuel supplied 

to your boiler. Replace burner plate with plate listed in 

correct table. Different burner plate is used for Nat and 

LP fuels.

Install top panel. Restore electrical and gas supply. Set 

thermostat high enough to start boiler. Restart boiler. 

Check for gas leaks using soapy water or commercial 

leak detector.

Fill out data on adjustment/conversion label. Attach to 

inside left panel of boiler.

Install front door.

Operate boiler through at least 6 ignition cycles to check for 

proper operation of the boiler before leaving job site.

Altitude in Ft.

0-5,000

5,000-10,000

Normal Input (MBH)

50

–

–

–

–

–

Combustion Setting (CO

2

)

10.0 -11.1%  (CO 

< 100 ppm)

Orifi ce

43331095

Burner Plate

109006405

Altitude in Ft.

0-5,000

5,000-10,000

Normal Input (MBH)

75

–

–

–

–

–

Combustion Setting (CO

2

)

10.0 -11.1%  (CO 

< 100 ppm)

Orifi ce

43331093

43331096*

Burner Plate

109009107

Altitude in Ft.

0-5,000

5,000-10,000

Normal Input (MBH)

100

–

–

–

–

–

Combustion Setting (CO

2

)

10.0 -11.1%  (CO 

< 100 ppm)

Orifi ce

43331091

Burner Plate

109009105