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SUF SERVICE HANDBOOK
INSTALLATION
Technical Training Department State Water Heaters
STC-077
8 Ashland City, Tennessee © 2004
EXTERIOR SIDEWALL CLEARANCES
Horizontal Vent (Using Room Air for Combustion)
Horizontal Direct Vent (Using Outdoor Air for Combustion)
When multiple units are directly vented through a wall, all intake vent terminals must be no lower
than the highest exhaust vent terminal.
CAUTION
DO NOT TERMINATE THE VENTING WHERE NOISE FROM THE EX-
HAUST OR INTAKE WILL BE OBJECTIONABLE. THIS INCLUDES LOCATION CLOSE TO
OR ACROSS FROM WINDOWS AND DOORS. AVOID ANCHORING THE VENT AND
INTAKE PIPES DIRECTLY TO FRAMED WALLS, FLOORS OR CEILINGS UNLESS RUB-
BER ISOLATION PIPE HANGERS ARE USED. THIS PREVENTS ANY VIBRATIONS
FROM BEING TRANSMITTED INTO THE LIVING SPACES.