Slant/Fin VSPH-180 Installation And Operating Instructions Manual page 11

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ICTORY VSPH Models
VICTORY VSPH MODELS- NON - DIRECT VENT, UTILIZING AN EXISTING
CHIMNEY AS A CHASE
All joints must be liquid and pressure tight. Use U/L listed single wall 3" dia.
AL29-4C* S.S. venting materials (See page 5).
Figure 8. Victory VSPH models-non-direct vent, utilizing an existing chimney as a chase
* AL 29-4C IS A REGISTERED TRADEMARK OF ALLEGHENY LUDLUM CORP.