Measuring Draft; Connecting Ductwork/Plenums Between "Add On" Furnace And Original Furnace - Napoleon HYBRID 150 Installation And Operating Instructions Manual

6.4.2 MEASURING DRAFT

Using a manometer with appropriate scale range connect testing tube between manometer and chimney
connector. End of testing tube should be inserted in chimney connector so approximately 1" (25mm) of tube
protrudes into and perpendicular to exhaust stream. This measurement shall be taken approximately 12"
(305mm) above elbow/T attached to the furnace fl ue. Any hole made in the chimney connector for insertion of
manometer tube shall be adequately sealed with high temp materials when testing is complete.
CHIMNEY DRAFT GREATER THAN -0.06" W.C. (-15 Pa) MAY CAUSE AN UNCONTROLLABLE FIRE
6.5 CONNECTING DUCTWORK/PLENUMS BETWEEN "ADD ON" FURNACE AND
ORIGINAL FURNACE
IMPORTANT:
○ The warm air supply duct system shall be constructed of metal in accordance with NFPA 90B, 2-1.1.
○ The plenums installed to the furnace shall be constructed of metal in accordance with NFPA 90B, 2-1.3.
AND DAMAGE THE FURNACE.
43
H3.58
W415-1013 / C / 11.19.13
EN