Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury or death. Read this supplement and the unit h
VENTING*All unit heaters must be vented! All Venting installations shall be in accordance with the latest edition of Part 7, Venting of Equipment of t
3VENTING - GENERAL GUIDELINESVenting Categories Non Condensing Condensing Negative Vent I II Pressure Positive Vent III IV Pr
Figure 4 - Horizontal Vent Termination LocationAIR INLET COLLARRemove screen and mounting plate from air inlet on rear panel of unit by removing 4 scr
Figure 5 - Horizontal Vent Termination Never use pipe other than 4 inch diameter. Never use PVC, ABS or any other nonmetallic pipe for venting! To do
Figure 6 - Vertical Vent TerminationVERTICAL TERMINATIONSelect location on roof for vent terminal, ensuring ade-quate space inside the building/struct
INSTALLATION - VENTING – CATEGORY IIICOMBUSTION AIR Never operate unit heaters without combustion air and flue gas piping in place or severe personal
VENTING (continued)4. Use UL 1738 listed single wall pipe for the vent system. For installations in Canada, use corrosion resistant and gas-tight, l
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