Fixtures & Water HeatersCâu 69 / 120
A gas fired water heater is installed in a residential garage in a seismic zone. It must be strapped in two places. Where must the lower strap be located relative to the heater's controls?
a.Directly across the control housing
b.At least 4 inches below the controls
c.At the exact vertical midpoint of the tank
d.At least 4 inches above the controls
Giải thích
The two straps go around the upper third and the lower third of the tank, and the lower strap must be at least 4 inches above the controls so the strap does not damage or obstruct the gas valve and thermostat. Strapping across or below the controls interferes with service and with the control housing itself. A single midpoint strap does not satisfy the two-point bracing requirement.
Luyện miễn phí toàn bộ 120 câu hỏi — không cần đăng ký.
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