Hartzell CD15K - HET MM10001 5-21-15 Rev L; TABLE OF CONTENTS

2900 Selma Highway, Montgomery AL 36108 USA
PH: +1.334.386.5400 (option 2) FAX: +1.334.386.5450 WEB: www.hartzell.aero
Page | 2
MM10001
Dated 1/1/08
Rev L dated 5/21/15
TABLE OF CONTENTS
TABLE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
TABLE OF REVISIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
GENERAL INFORMATION FOR MODEL CD15K, CD25K, CD35K, CD45K, CD50K, CD55K
AND CD70K SERIES COMBUSTION HEATERS:
1. WARRANTY *Must read before proceeding with heater installation, modification or
servicing* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3. SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Listing of P/N’s per model series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4. DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5. CONSTRUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6. OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7. (ICA) INSTRUCTIONS FOR CONTINUED AIRWORTHINESS LIMITATIONS
SECTION
7.1 Preflight/Operational check and shutdown procedures 14
7.2 Airworthiness Limitations (MANDATORY) 14
7.3 Flight Manual Supplement (FMS) Sample 15
NOTE: The FMS supplied with your new heater must be inserted in the aircraft flight manual
8. HEATER MAINTENANCE AND SERVICING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
8.1. Removal and Installation Procedures 18
8.2. 100hr/Annual Inspection and operational check 19
8.3. 250hr/2yr service and inspection 19
8.4. 1000hr/250hr 4 year service and inspection 20
8.5. 2000hr overhaul 20
8.6. Heater Pressure Decay(PDT) and combustion air pressure switch test 21
8.7. Heater disabling 23
9. HEATER OVERHAUL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
9.1. Cleaning
9.2. Cleaning Comb Tube and Jacket Assembly
9.3. Heater assembly inspection and testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
9.4. Reassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
10. TESTING AFTER INSTALLATION OR OVERHAUL. . . . . . . . . . . . . . . . . . . . . . . . . 34
10.1. General 34
10.2. Bench Testing 34
10.3. Operational Test 34
10.4. Determining and setting heat output 35
11. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
11.1. Heat Quick Check 37
11.2. Combustion Heater System 39
11.3. Inspection Results 40
11.4. Heater Accessories 41
11.5. Troubleshooting Guide 44