State Water Heaters ULTRA FORCE 100 Installation & Operation Instruction page 9

U.S. DIRECT VENT
FIGURE 6a.
CAUTION
TO PREVENT EXHAUSTING PRODUCTS FROM CIRCULATING TO THE AIR INTAKE
IN WINDY/COLD AREAS, THE MAXIMUM PRACTICAL DISTANCE BETWEEN
THESE TWO TERMINALS IS RECOMMENDED.
CANADIAN DIRECT VENT
FIGURE 6b.
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