I&O Manuals (pdf files) - United States versions. Consult factory for other versions.

Boiler manuals

Centauri Plus - 399 to 1000 MBH
Centauri Plus - 1500 to 2000 MBH
Centauri - 399 to 1000 MBH
Centauri - 1500 to 2000 MBH
VT.3 - 399 to 1000 MBH
VT.3 - 1500 to 2000 MBH

RHWE Electric

Boilers requiring both boiler and burner manuals

EMX, EMXO and EMXGO boiler
EMX burner 399 MBH
EMX burner > 399 MBH
EMXO burner
EMXGO burner

 

Controls and EMS interface instructions

Click for controls manual index page

 

 

 

 

 

Manuals for retired product lines

EPV and EPVL
PRIMERA boiler and domestic water heater