A.O. Smith 960 through 967 User Manual
Page 2
Attention! The text in this document has been recognized automatically. To view the original document, you can use the "Original mode".
BTH Service Handbook
TABLE OF CONTENTS
Introduction................................ .........2
Installation
Clearances................................... .........3
Gas Requirements....................... .........3
Venting......................................... . .4 -8
Air Requirements.......................... . 9 - 1 1
Contaminated Air.................................. 12
Flammable Items.................................. 12
Multiple Unit Piping...................... ........ 13
Condensation............................... ........ 14
Operation
Sequence of Operation................ ........ 15
Controls........................................ ........ 16
Circuit Boards....................................... 17
Troubleshooting
Pre-Service.................................. ........ 18
120 VAC to Control...............................18
Transformer................................... 1 9 - 2 0
ECO Check.................................. . 2 1 - 2 2
Temperature Probe...................... .........23
Pressure Switch Continuity . .
.........24
Blower........................................ . 2 5 - 2 6
Pressure Switch Performance
. 2 7 - 2 8
120 VAC to Ignitor...................... . 2 9 - 3 0
Ignitor Resistance...................... .........31
Gas Valve Test........................... .........32
Gas Pressure Check.................. .........33
Component Information
Orifice Tables........................................ 34
Pressure Switches........................ 3 5 - 3 6
Wiring Diagrams ................................. 37
Service Aids......................................... 38
BTH Muffler........................................... 39
Questions & Answers......................... 40
Error Codes......................................... 41
Service Checklist.................................42
Parts Lists
970 & 973 Series...........................4 3 - 4 7
966 & 967 Series...........................4 8 - 5 9
960 Series..................................... 6 0 - 6 3
962 Series.................................... 6 4 - 7 1