A.O. Smith Cyclone XL 100 Series User Manual

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CONTENTSCONTENTS
INTRODUCTION ...................................................................... 3
Qualications ........................................................................ 3
Service Warning ................................................................... 3
Service Reminder ................................................................. 3
Tools Recommended ........................................................... 3
INSTALLATION CONSIDERATIONS ....................................... 4
Instruction Manual ................................................................ 4
Closed Water Systems ......................................................... 4
Thermal Expansion .............................................................. 4
Air Requirements ................................................................. 4
Contaminated Air .................................................................. 4
FEATURES AND COMPONENTS ........................................... 5
Top View ............................................................................... 8
SEQUENCE OF OPERATION FLOW CHART ......................... 9
FAULT AND ALERT CODES .................................................. 10
1. Low Gas Pressure .......................................................... 10
2. Ignition Failure ................................................................ 12
3. Blocked Air Intake .......................................................... 14
4. Blocked Exhaust ............................................................ 15
5. Flame Sensor Error ........................................................ 15
6. No Water ........................................................................ 17
7. Anode Shorted ............................................................... 18
8. Temperature Probe Short ............................................... 18
9. Temperature Probe Open ............................................... 20
10. Flue Gas Temperature Probe Short/Open ................... 21
11. Flue Gas Temperature High Limit ................................. 21
12. Flow Not Detected ........................................................ 21
13. Flow Switch Stuck Closed ............................................ 22
VENTING ................................................................................ 24
General Venting Information .............................................. 24
INTAKE AIR CONNECTION ................................................... 25
ELECTRICAL CONNECTIONS – ALL MODELS .................... 26
Power Fluctuations and Electrical Noise ........................... 26
Dedicated Power Wiring and Breakers .............................. 26
Electrical Wiring ................................................................. 26
Power Supply Connections ................................................ 26
Enable/ Disable Switch ...................................................... 27
Power Supply Test ............................................................. 27
INSTALLATION CHECK LIST ................................................ 28
OPERATION AND SERVICE ................................................. 29
How It Works ...................................................................... 29
Combustion Blower ............................................................ 29
Modulation .......................................................................... 29
BLOWER SPEED CONTROL ................................................ 30
BURNER ASSEMBLY ............................................................ 30
COMBUSTION BLOWER AND BURNER REMOVAL/
INSTALLATION ..................................................................... 31
Combustion Blower/ Burner Removal ................................ 31
Combustion Blower/ Burner Installation ............................. 31
SPARK IGNITER .................................................................... 32
CCB (CENTRAL CONTROL BOARD) .................................... 33
CCB Cover Removal And Replacement ............................ 34
CCB Circuit Board Layout .................................................. 35
CCB Connection Identication ........................................... 36
CPAM – Commercial Power Anode Module ...................... 38
WIRING DIAGRAM ................................................................ 39
CONTROL OVERVIEW .......................................................... 40
ICOMM Remote Monitoring System .................................. 40

A.O. Smith Cyclone XL 100 Series Specifications

General

Brand	A.O. Smith
Model	Cyclone XL 100 Series
Category	Water Heater
Language	English