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American Water Heater (A)BCG385T500-8N, (A)BCG38T500-8P manual Manifold Pressure Adjustment

Models: (A)BCG38T500-8P (A)BCG385T500-8N

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Manifold Pressure Adjustment

OPERATION AND SERVICE

Manifold Pressure Adjustment

The main gas regulators are found beneath the silver or black cap screws. (Natural Gas valves have silver caps; Propane valves have a black caps). Remove the caps to access the outlet (manifold) pressure adjustment screw. IMPORTANT: Ensure that the outlet pressure matches the manifold pressure that is listed on the water heater rating plate.

•Natural Gas valves are factory preset to 3.5 inches W.C. The full rate outlet pressure range is between 3 and 5 inches W.C.

•Propane (LP) valves are factory preset to 10.0 inches W.C. The full rate outlet pressure range is between 8 and 12 inches W.C.

•Caution: Always test the manifold pressure at the outlet when the gas is flowing.

Wiring Harness	Main Gas
	Regulators

(Outlet Pressure

Adjustment)

Lead Wires

(24-Volt Main Valve

Solenoid Connections)

TOP VIEW OF GAS VALVE

Figure 13

Main Valve Solenoid Connections

The figure above shows the two 24-volt main valve (MV) solenoid connections. The two yellow wires from the 12-pin ignition board plug connect to these leads.

Servicing should only be performed by a Qualiﬁed Service Agent

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American Water Heater (A)BCG385T500-8N, (A)BCG38T500-8P manual Manifold Pressure Adjustment, Main Valve Solenoid Connections

Contents

Service Handbook MODELS ABCG385T500-8N ABCG38T500-8PINSTALLATION CONSIDERATIONS - PRE SERVICE CHECKS - OPERATION & SERVICE -TROUBLESHOOTINGServicing should only be performed by a Qualiﬁed Service Agent COMMERCIAL GAS WATER HEATER SERVICE MANUAL TABLE OF CONTENTSSERVICE REMINDER SERVICE WARNINGINTRODUCTION QUALIFICATIONSINSTRUCTION MANUAL REQUIREMENTSTOOLS REQUIRED TOOLS OPTIONALWATER PIPING INSTALLATION CONSIDERATIONSGAS PRESSURE REQUIREMENTS Closed Water SystemsAir Supply AIR REQUIREMENTSInsufficient Make-up Air, Negative Air Pressure, and Downdrafts Make-up Air Direct Communication with Outdoors Contaminated Air CLEARANCES WATER HEATERCLEARANCES EXTERIOR VENTING SEQUENCE OF OPERATION OPERATION AND SERVICEELECTRICAL SEQUENCE OPERATION AND SERVICE WIRING DIAGRAMServicing should only be performed by a Qualiﬁed Service Agent WIRING DIAGRAM FOR ABCG385T500-8N/8POPERATION AND SERVICE OPERATING SEQUENCE - FLOW CHARTServicing should only be performed by a Qualiﬁed Service Agent Below 0.1 uA DC Flame SenseMeasuring Gas Pressures GAS CONTROL VALVEMain Valve Solenoid Connections Manifold Pressure AdjustmentOPERATION AND SERVICE GAS CONTROL VALVE/BURNER AREA VIEWServicing should only be performed by a Qualiﬁed Service Agent Honeywell Gas Valve Main Burner ShieldBLOWER PROVER SWITCH - SETTINGS Servicing should only be performed by a Qualiﬁed Service Agent THERMOSTAT AND IGNITION CONTROL BOARD VIEWOPERATION AND SERVICE WHITE RODGERS IGNITION CONTROL BOARD WHITE RODGERS INTEGRATED CONTROL - THERMOSTATOPERATION AND SERVICE Servicing should only be performed by a Qualiﬁed Service AgentPRE-SERVICE CHECKLIST IGNITION CONTROL BOARD ERROR CODES TROUBLESHOOTING1 FLASH System has locked out after 3 trials for ignition 2 FLASHES3 FLASHES 6 FLASHES Reversed polarity in power supply4 FLASHES 7 FLASHESCONTINUOUS ON Internal control board failure 8 FLASHES Igniter not sensed and/or water heater not groundedCONTINUOUS FLASH INDICATION INTEGRATED HEATER CONTROL DISPLAY LIGHTSACTION STATUSConditions TEST 1 120 VAC TO HEATER CHECKTEST thenTROUBLESHOOTING TEST 2 POLARITY CHECKServicing should only be performed by a Qualiﬁed Service Agent Check from on/off switch center and white wire terminals to groundThen TEST 3 CONTINUITY CHECK OF HIGH LIMIT ECOSee Ignition Control Board Error Codes TROUBLESHOOTINGOHMS RESISTANCE TABLE TEST 4 UPPER TEMPERATURE PROBE CONTINUITY CHECKOhms TROUBLESHOOTINGTROUBLESHOOTING TEST 5 CALLING FOR HEAT - NO BLOWER OPERATIONServicing should only be performed by a Qualiﬁed Service Agent ConditionsTROUBLESHOOTING TEST 6 BLOWER ON, NO IGNITIONServicing should only be performed by a Qualiﬁed Service Agent Prover SwitchTROUBLESHOOTING TEST 7 BLOWER ON, BLOWER PROVER SWITCH CLOSED, NO IGNITER OPERATIONServicing should only be performed by a Qualiﬁed Service Agent Continuity check - Power off- Plug removed from E4 receptaclesTROUBLESHOOTING TEST 8 IGNITER HEATS, NO MAIN BURNERServicing should only be performed by a Qualiﬁed Service Agent TESTTROUBLESHOOTING TEST 9 IGNITER HEATS, NO MAIN BURNERServicing should only be performed by a Qualiﬁed Service Agent ConditionsTROUBLESHOOTING TEST 10 MAIN BURNER IGNITION FOR LESS THAN FIVE SECONDSServicing should only be performed by a Qualiﬁed Service Agent ConditionsTROUBLESHOOTING TEST 11 WATER HEATER SHUTTING OFF BELOW SETTINGServicing should only be performed by a Qualiﬁed Service Agent WATER HEATER SHUTTING OFF BELOW SETTINGServicing should only be performed by a Qualiﬁed Service Agent Servicing should only be performed by a Qualiﬁed Service Agent Copyright 2010 American Water Heater Company. All rights reserved P.O. Box 1597, Johnson City, TN Phone 800-456-9805 Fax