Bradford-White Corp 9kW Water Heater User Manual


 
2
CONTENTS
Star
t-Up Procedure
Filling the Water Heater . . . . . . . . .22
Start-Up Checks . . . . . . . . . . . . . . .23
Shutdown Procedure . . . . . . . . . . . .24
Maintenance
T&P Relief Valve . . . . . . . . . . . . . .24
Water Chemistry . . . . . . . . . . . . . . .25
Flushing the Tank . . . . . . . . . . . . . .25
Sediment Removal . . . . . . . . . . . . .25
Scale Removal - Elements . . . . . . .25
T
rouble Shooting
Not Enough Hot Water . . . . . . . . . .27
Water Is Too Hot . . . . . . . . . . . . . .27
Water Heater Sounds . . . . . . . . . . .27
Leakage . . . . . . . . . . . . . . . . . . . . .27
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . .1
Safety Warnings . . . . . . . . . . . . . . . .1
Checking the Equipment . . . . . . . . . .1
Codes . . . . . . . . . . . . . . . . . . . . . . . .4
Installation Requirements
Location . . . . . . . . . . . . . . . . . . . . . .4
Drain Pan Requirements . . . . . . . . . .5
Clearances . . . . . . . . . . . . . . . . . . . .6
Mounting . . . . . . . . . . . . . . . . . . . . .7
Water Connections . . . . . . . . . . . . . .7
Tank Construction . . . . . . . . . . . . . .8
Relief Valve . . . . . . . . . . . . . . . . . . .8
Thermal Expansion . . . . . . . . . . . . .8
Cathodic Protection . . . . . . . . . . . . .9
Electrical Ser
vice
Electrical Connection . . . . . . . . . . .9
Wire Sizing . . . . . . . . . . . . . . . . . . .9
Fusing . . . . . . . . . . . . . . . . . . . . . .9
Electrical Connection . . . . . . . . . . . .9
Jacket Assembly . . . . . . . . . . . . . . .10
Standard and Optional Controls . . .10
Components and Contr
ols
Terminal Block . . . . . . . . . . . . . . . .11
Fuses and Fuse Blocks . . . . . . . . . .12
Contactors . . . . . . . . . . . . . . . . . . .12
Transformer . . . . . . . . . . . . . . . . . .12
Immersion Thermostat . . . . . . . . . .13
Temperature Regulation . . . . . . . . .13
Risk of Scald Warnings . . . . . . . . .14
Temperature Control Sequencer . . .14
Display . . . . . . . . . . . . . . . . . . . . . .16
Temperature Adjustment . . . . . . . . .17
Error Messages . . . . . . . . . . . . . . . .18
Temperature Limit Control . . . . . . .18
Immersion Heating Elements . . . . .19
Safety Door Lock . . . . . . . . . . . . . .19
Low Water Cut-Off . . . . . . . . . . . . .20
Low Water Pressure Switch . . . . . .20
High Water Pressure Switch . . . . . .20
Manual Limiting Switches . . . . . . .20
Time Clock . . . . . . . . . . . . . . . . . . .21
Pilot Lights . . . . . . . . . . . . . . . . . . .21
Alarm Bell . . . . . . . . . . . . . . . . . . .21