45
Fire Protection System Supervised Loops
The supervised loops are integral to proper operation and activation of the Fire Protection System. All systems
have two supervised loops; each loop consists of two conductors, one positive and one negative. One loop is ded-
icated to all sensors, while the other is dedicated to all manual actuation devices (push/pull stations). The super-
vised loop connections are located at the front edge of the hoods for accessibility. Connections beyond the hood,
like the connections at the manual actuation device, must be made with a plenum-rated wire. It is recommended to
use a two-conductor Belden 6320UL, 18 AWG, wire, or similar for these connections. Refer to Figure 43 for super-
vised loop details.
The supervised loop must be run through metallic conduit. Do not run wiring with high voltage wires. Verify all
supervised loop wires are free from damage/stress. All supervised loop wires must be terminated in terminal
blocks, junction boxes, and push-stations.
• Connections to the firestat will use two Wago connectors. One for an incoming loop and one for an outgoing
loop.
• Flexible metallic conduit is used to route the wiring that connects the firestat to the remote loop junction box.
Secure conduit to hood hat channel when possible.
Figure 43 - Supervised Loop Connections
For connections on or above the hood, use Type MG or MGT wiring with Wago connectors. A Supervised Loop
Connection kit is available to connect back to back or end to end hoods. This kit will come with the necessary
hardware and wire.
Table 13 - Supervised Loop Components
Connection Kit Part Number Length Location
SLPCON-03 3 Feet End to End Hoods
SLPCON-05 5 Feet End to End Hoods
SLPCON-10 10 Feet End to End and Back to Back Hoods
SLPCON-15 15 Feet End to End and Back to Back Hoods
SLPCON-20 20 Feet End to End and Back to Back Hoods
High Temperature Supervised Loop Components Part Number
Type MG Wire, White, 16 AWG 441601C6.FE9
Type MG Wire, Black, 16 AWG 441601C6.FE0
Wago Connectors 221-412
1. Firestat
2. Conduit
3. Junction Box
4. Wago Connector
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