Kidde 2X-AF1-S - Class B Loop Connection

Chapter 2: Installation
2X-A Series Installation Manual 35
Class B loop connection
Caution: Class B loops do not comply with EN 54-13 requirements. Never install
more than 32 devices on a Class B loop.
Connect Class B loops as shown in Figure 16 below. Connection may be made
to either the A connectors (as shown) or to the B connectors, but not to both.
Class B loops are supervised for short circuit.
Figure 16: Class B loop connection