LENNOX 11K80 Sup and Ret Smoke Detector Kit Instruction Manual
- June 4, 2024
- Lennox
Table of Contents
- PACKAGED UNITS KITS AND ACCESSORIES
- Shipping and Packing List
- 10 – 16 X 3/4” sheet metal screws
- 8 – 32 X 1” thread-forming screws
- 10 – 16 X 3/4” sheet metal screws
- 8 – 32 X 1” thread-forming screws
- Wiring – LGH & LCH Units
- Wiring – LGM, LCM Units
- Maintenance and Test Procedure Instructions
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
11K80 Sup and Ret Smoke Detector Kit
Instruction Manual
PACKAGED UNITS KITS AND ACCESSORIES
506218-02
4/2022
Supersedes 9/2020
D4P120 & D4S
SMOKE DETECTOR KITS
INSTALLATION INSTRUCTIONS FOR SMOKE DETECTOR KITS
USED WITH KC/KG/KH024-090 & LCM/LGM/LCH/LGH036-074 UNITS
Shipping and Packing List
21Z11; 603408-11
Single-sensor kit contains the following:
1 – Smoke detector sensor
1 – Smoke detector power board
1 – Supply bracket
1 – Supply brace
1 – Return bracket (used on KC, KG & KH units only)
1 – Return brace (used on KC, KG & KH units only)
1 – Power harness
1 – Supply or return air harness
1 – Jumper harness
1 – Metal sampling tube
1 – Plastic exhaust tube
1 – Magnet
1 – Sensor manufacturer’s instructions
10 – 16 X 3/4” sheet metal screws
8 – 32 X 1” thread-forming screws
21Z12; 603408-12
Dual-sensor kit contains the following:
2 – Smoke detector sensors
1 – Smoke detector power board
1 – Supply bracket
1 – Supply brace
1 – Return bracket (used on KC, KG & KH units only)
1 – Return brace (used on KC, KG & KH units only)
1 – Power harness
1 – Supply and return air harness
2 – Metal sampling tubes
2 – Plastic exhaust tubes
2 – Magnets
1 – Sensor manufacturer’s instructions
10 – 16 X 3/4” sheet metal screws
8 – 32 X 1” thread-forming screws
Application
LCM, LGM, LCH and LGH Units — Smoke detector will send a 24Vac signal to the
unit controller when smoke is sensed. Unit controller default mode will de-
energize unit. KC, KG, and KH Units — Smoke detector will interrupt the 24Vac
signal to the unit control circuit when smoke is sensed. The unit will be de-
energized.
Identify Harnesses
Three harnesses are provided in the single sensor kit and two harnesses are
provided in the dual sensor kit. Use wire labels, length of harnesses, and
number and size of connectors to determine appropriate harnesses used in each
application. Refer to figure 1 for 53W78 single sensor kits and figure 2 for
54W79 dual sensor kits.
Installation
WARNING
Improper installation, adjustment, alteration, ser vice, or maintenance can
cause property damage, personal injury or loss of life. Installation and ser
vice must be performed by a licensed professional installer, service agency,
or gas supplier.
CAUTION
Before attempting to perform any service or mainte nance, turn the electrical
power to the unit OFF at the dis connect switch.
CAUTION
The danger of sharp metallic edges. Can cause injury. Take care when servicing
the unit to avoid accidental contact with sharp edges.
Smoke detector sensor and power board installation Use the
manufacturer’s instructions provided with the smoke detector to install the
sensor(s) and power board. Refer to figure 3 for the location of the power
board, supply air sensor, and return air sensor on units with an economizer.
For the location of the return air sensor on units without an economizer,
refer to figure 4 for KC, KG, and KH units, and figure 5 for LCM, LGM, LCH,
and LGH units.
Wiring – KG/KC/KH Units
- Locate and disconnect pink wires labeled 95 and 96 in the control area above the compressor. See figure 7.
- Connect wires labeled 95, 96, and TB1-C from the kit harness to wires labeled 95, 96, and TB1-C in the unit.
- Route harness wires to the top of the unit. Secure to an existing bundle of wires and route to the control area above the compressor. See figure 8. Make sure wires are secured away from other components.
- Make jack/plug connections as shown in figure 9 when installing return air smoke detectors only, figure 10 when installing supply air smoke detectors only, and figure 11 when installing both supply and return air smoke detectors. Refer to respective wiring diagrams in Figures 12, 13, and 14.
NOTE – In single-sensor applications, the wiring harness is sized for
return air applications. There will be excess wiring in supply air
applications. Gather excess wire and secure it away from other
components.
Wiring – LGH & LCH Units
Make jack/plug connections as shown in figure 15 when installing return air
smoke detector only, figure 16 when installing supply air smoke detector only
and figure 17 when installing both supply and return air smoke detectors.
Refer to wiring diagrams in figure 18, 19 and 20.
The kit jumper harness is used in single supply air applications only. Route
harness as shown in figure 8.
Discard harnesses in other applications.
Wiring – LGM, LCM Units
Make jack/plug connections as shown in figure 21 when installing return air
smoke detector only, figure 22 when installing supply air smoke detector only
and figure 23 when installing both supply and return air smoke detectors.
Refer to wiring diagrams in figure 24.
The kit jumper harness is used in single supply air applications only. Route
harness as shown in figure 8. Discard harnesses in other applications.
Test Magnet(s)
A test magnet is provided in a bag assembly with each sensor. Remove the
magnet from the bag assembly and place it on a metal surface near the sensor.
The magnet is used during test procedures.
Maintenance and Test Procedure Instructions
The sensor manufacturer’s instructions, which are provided with each sensor,
outline information on maintenance and test procedures. Place these
instructions in the literature pouch for future reference.
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>