Click link to open PDF: TSB-23-08.pdf

 
Tech bulletin stating 2” venting is allowable for ELU 199K BTU output.
Click PDF to view:  TSB-22-10- 2IN Venting elu eftu 199s(2).pdf

 
The following procedures are for resetting the gas valve, when setting the CO2 is too difficult or the boiler is not igniting.
Click PDF to view: TSB-23-05 ELU EFTU Gas Valve Factory Reset.pdf
 

 
Click PDF to view: TSB-22-01-ELU-EFTU-Torque.pdf