Utica Boilers SSV 安装指导

If flame detected before Gas Valve 

opens  during ignition boiler will 

lockout.
Please refer to troubleshooting guide.

Gas Valve energized to deliver air/fuel 

to burner.

If flame undetected after 3 seconds 

boiler will de-energize Gas Valve and 

enter post purge mode for 30 seconds.
Ignition attempted 5 times before 

lockout.

Boiler will run provided all operational 

and safety devices are within limits
Refer to for more information.
Control module adjusts firing rate 

according to heating demand.  When 

Boiler detects demand met, will enter 

post purge mode then standby mode.

  

If simultaneous demand for Central 

Heat and DHW, boiler will enter DHW 

Priority Mode.
Priority mode limits amount of time 

boiler can run in DHW mode to meet 

CH demand.
Max DHW Priority Time setting 

determines maximum time allowed for 

DHW heating mode.
Please refer to section Appendix A 

section 1.5 for more information.

Note:

5 Ignition 

trials, 

then 

Lockout A01