A.O. Smith
GB/GW-300, 500, 750 SERIES, 650
warranty
Troubleshooting
Warranty
UIM Operating Procedures
FCB Eight position Dipswitch
Page 20
NOTES
20
Page 19
Page 21
Image 20
Page 19
Page 21
Contents
Series 400, 401, 402, 403, 404
14-18
Lighting Instructions for the GB/W 300 through 750 models
Lighting Instructions
Risk of Scalds
Burner System
Inputs To CCB and FCB
CCB Drawing #211758
FCB Drawing #211759
PDB Drawing #211760
CCB/FCB Indicator Lamps & Fuses
Line Polarity Indicator & Fuse Protection
Outputs from CCB and FCBs
Igniters
FCB Eight position Dipswitch
GB/LB
Stages 1 and 2 will turn on in sequence from 1 to
Temperature Setpoints System Control Algorithm
UIM Operating Procedures
Description of CCB control states
Description of FCB control states
Idle State
Operating Setpoint
Operating Differential Setpoint
Connection Diagram Drawing #211769
Page
UIM Touch Switches
Soft
Fault Displayed Description Red LED Lockout
Hard
See below
Other troubleshooting hints
Page
Page
Page
NEW Boiler Limited Warranty
Top
Page
Image
Contents