Page 2
Venturi Replacement Kit for PRESTIGE 399 Instructions 8. Remove the 4 screws securing the gas valve outlet pipe to the venturi. 1. Turn power to the unit “OFF”. 9. Install the new venturi to the gas valve outlet 2. Remove the front jacket panel. Swing away the pipe using the original 4 mounting screws.
Page 3
Venturi Replacement Kit for PRESTIGE 399 W RNING NOTI E Do not check for gas leaks with an open The control panel will display an H followed flame. Use a bubble test. Failure to check for by the current boiler temperature when gas leaks can cause severe personal injury, placed into High fire test mode.
Page 4
Venturi Replacement Kit for PRESTIGE 399 4. If the combustion level during Low fire is not Trimax Instructions within +/-0.2% of the combustion level measured at High fire, adjust the OFFSET SCREW below the cap on the gas valve (see Fig. 4) as follows. Counter-clockwise adjustment of OFFSET Installer SCREW at low fire:...
Page 5
Venturi Replacement Kit for PRESTIGE 399 5. Press the RIGHT button to adjust the firing rate 8. If the combustion level during Low fire is not to 100%. Hold down the RIGHT button to within +/-0.2% of the combustion level mea- rapidly increase the firing rate.
Need help?
Do you have a question about the PSRKIT84 and is the answer not in the manual?
Questions and answers