Bradford-White Corp D-38T-155

Page 37

SERVICE PROCEDURE D24-VI

Anode Removal and Inspection

Approximate Anode Rod Loc ations

Contents

Main SERVICE MANUAL COMMERCIAL 24 VOLT FLUE DAMPER SERIES WATER HEATER WITH HONEYWELL INTEGRATED CONTROL SYSTEM Table of Contents Page Tools Required for Service Specifications Sequence of Operation 1 2 34 5 CAUTION Use Caution Not to Damage Connectors when making Voltage Measurements or Jumping Terminals Error Code Shown in Water Heater Display 6 Page 1. Max Setpoint (Display/Change) 2b. Water Temperature - Upper Sensor (Displays if there is an upper sensor - some models) 2c. Water Temperature - Lower Sensor (Displays if there are two sensors) Max Setpoint value in Water Heater Display & 3. Flame Current of Pilot Flame Sensor (Displays only in the Heating Cycle) 4. Setpoint (Display/Change) 5. F/C (Display/Change) 6. Differential (Display only - shows the differential of the thermostat) Page % % Step 4: Press Set button to confirm new Max Setpoint value and stop setting mode. "Max Setpoint" stops flashing "Max Setpoint" continues to flash while making adjustments & Page % Page Step 3a: Press Temperature Up button to change temperature format to C % Step 3b: Press Temperature Down button to change tem perature format to F Step 4: Press Set button to confirm F or C format. F/C will stop flashing Page % % &% Exiting Service Mode Page % % & Page SERVICE PROCEDURE D24-I Sensor Resistance at Various Temperatures SERVICE PROCEDURE D24-I Sensor Resistance Testing Pilot Operation Testing 11 Pilot Inspection Pilot Operation Testing Flame rod Page 29 Meter Probe Meter Probe Checking pilot flame sens or wire and flame rod for continuity. SERVICE PROCEDURE D24-III Main Burner Operation Testing 11 SERVICE PROCEDURE D24-III Main Burner Operation Testing Page Main Burner & Pilot Removal and Inspection Control Board Replacement unplug while performing this procedure. SERVICE PROCEDURE D24-V Flue BaffleRemoval, Inspection SERVICE PROCEDURE D24-VI Anode Removal and Inspection