TM 9-2320-361-34 17-13. PERSONNEL HEATER IGNITER AND IGNITION CONTROL UNIT REPLACEMENT (Contd) I c. Ignition Control Unit Installation 1. Install new lockwasher (6) and ignition control unit (4) on heater housing (5) with three new screws (3). 2. Install two ignition control leads (2) on flame detector switch (7) with two new screw-assembled lockwashers (1). 3. Install ignition control lead (8), receptacle lead (9), and thermostat lead (10) on overheat switch (7) with new nut-assembled lockwasher (6). I d. Igniter Installation 1. Install igniter tube (17) in blower housing (15) with new screw (16). CAUTION Igniter is fragile. Use care when removing igniter. Failure to do so may result in damage to equipment. 2. Install new igniter (16) in igniter tube (15) and press and turn 1/4-turn to right to hold in place. 3. Install igniter hatch cover (17) on heater housing (5) and hold in place with two fly screws (13). 4. Connect igniter leads (19) and (20) on ignition control unit (4) and igniter hatch cover (17). 5. Install new lockwasher (21), ground strap (22), and receptacle ground lead (23) on ignition control unit (4) with nut (18). 17-32