Technical Standards and Safety Authority (TSSA) G3 Practice Exam

Which fastener is used to connect a drain hose to a fan coil unit?

1. A gear clamp

2. Copper bailing wire

3. Electrical tape

4. Grappler bar

The correct answer is: A gear clamp

The use of a gear clamp to connect a drain hose to a fan coil unit is appropriate due to its design and effectiveness in creating a secure and watertight connection. Gear clamps are made from metal and feature a tight-fitting band that can be adjusted to ensure a snug grip around the hose and the outlet of the fan coil unit. This design prevents leaks and ensures that any condensate that flows through the drain hose is efficiently directed away from the unit. On the other hand, other options may not provide the same level of security or reliability. Copper bailing wire, while it might hold things together, does not create the same level of seal as a clamp, which can lead to issues with leaks. Electrical tape is typically used for insulating and securing electrical connections, not for maintaining a sealed connection on plumbing components like drain hoses. The grappler bar is not a common tool used for connecting hoses in this context and lacks the functionality needed to create a secure fit necessary for fluid transfer.