ACS Domestic Central Heating Boilers & Water Heaters Exam Practice Questions - ACS Domestic Central Heating Boilers & Water Heaters Exam

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Which of the following is a critical requirement for the safe termination of a room-sealed condensing boiler's horizontal flue?

It must terminate at least 300mm below an opening, window, or air vent. It must be sealed with silicone sealant where it passes through a wall. It must incorporate a condensate trap at the terminal end. It must be at least 150mm from an adjacent wall if terminating vertically.

Correct Answer:

It must terminate at least 300mm below an opening, window, or air vent.

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