Remove the two detector board mounting screws. 2. Pull gently on the board to remove it. 3. To replace the board, align the board mounting features, holes, and the interconnect terminals. Push the board into place. 4. Secure board with the two mounting screws. POWER BOARD REPLACEMENT 1. Disconnect wiring from the terminal block. 2. Remove the two power board mounting screws. 3. Pull gently on the board to remove it. 4. To replace the board, align the board mounting features, holes, and the inter

12. Slide sampling tube into bracket, making sure that the sampling holes point down. Pull the sampling tube so that it is flush with the smoke detector. 13. Return to Electrical/Compressor section and secure sampling tube to smoke detector with two no. 6 self-tapping screws. 14. Attach smoke detector to partition using two, 8-18 3/4-in. pan head screws. Do not overtighten the screws. Damage to smoke detector may result. 15. Return to side panel and insert tube end plug into sampling tube. 16. R

The cover of the controller contains the Alarm, Trouble, Dirty and Power LEDs. The cover of the sensor contains the Alarm, Trouble and Power LEDs. (See Fig 2.) The smoke detector can be reset by a momentary power interruption, by the reset button on the front cover, by the control panel, or by the remote reset accessory. RETURN SENSOR CONTROL MODULE SECURE FROM BEHIND WITH SCREW J1 S E J1 J2 S E RETURN SENSOR J1 J2 CONTROL MODULE J1 TERMINAL STRIP C07182 Fig. 11 --- Sensor Installation Airflow S

Secure cable to back side of cable tray using three snap-in wire ties. 15. In the Electrical/Compressor section, install snap bushing in the center knockout underneath the terminal strips located in the bottom right-hand corner of control box. 16. Connect wires to terminal strips as shown in Fig. 6 for ComfortLinkt units or Fig. 7 for Electro- --Mechanical Units. NOTE: This step is not needed with 48/50PG Humidi- --MiZert units because they have plug 19 harness already installed in the control b