A.O. Smith BTH 120 Service Handbook - Cyclone Bth
Other manuals for BTH 120:
Service handbook
Manual is about: COMMERCIAL GAS HIGH EFFICIENCY WATER HEATERS BTH 120 THRU 500
SERIES 200/201
of
65
A. O. Smith Water Products Company
Service Handbook
Irving, Texas 2000©
Training Department
16
120 VAC present to ground and:
• Each black terminal of on/off switch
• CN1 black term 1
• CN 2 black term 1
• CN 4 black term 1
• CN 5 white term 1 (only while ignitor is heating)
Note: CN 6 black term 2 will give reading of 90-100 volts – ignore
this reading.
24 VAC present to ground and:
• CN 3 red term 1 and red term 4
• CN 4 blue term 4
• CN 6 blue term 3, brown term 4, and brown term 6
• Each terminal of the 3 or 4 pressure switches
CYCLONE BTH
NORMAL INDICATIONS / READINGS