Bradford White Condensing PV Series Service Manual
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Bradford White Condensing PV Series Service Manual

Through-the-wall
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Manual 238 51526 00B 08/18
Condensing PV Series
Through-The-Wall Gas Water Heaters
SERVICE
MANUAL
Troubleshooting Guide
and Instructions for Service
(To be performed ONLY by
qualified service providers)
Models Covered
by This Manual:
Through The Wall Models:
RC2PV50H*(N,X)
LC2PV50H76*(N,X)
(*) Denotes Warranty Years
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Summary of Contents for Bradford White Condensing PV Series

  • Page 1 Condensing PV Series Through-The-Wall Gas Water Heaters SERVICE MANUAL Troubleshooting Guide and Instructions for Service (To be performed ONLY by qualified service providers) Models Covered by This Manual: Through The Wall Models: RC2PV50H*(N,X) LC2PV50H76*(N,X) (*) Denotes Warranty Years Manual 238 51526 00B 08/18...

  • Page 2: Table Of Contents

    The Bradford White Condensing PV Series Through-The-Wall Gas Water Heaters Table of Contents Page PV Service Procedure Introduction ..........................4 How to Use This Manual......................5 Tools Required for Service .......................5 Specifications ..........................6 Glossary of Terms ........................6 Vent Tables ..........................7 Control Timings.........................9 Sequence of Operation ......................10...
  • Page 3 Condensing PV Series WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, DANGER personal injury, or death. Do not store or use gasoline or other flammable, combustible, or corrosive vapors and liquids in FOR YOUR SAFETY the vicinity of this or any other appliance.

  • Page 4: Introduction

    Condensing PV Series Introduction The new Bradford White residential condensing water heaters are designed to provide reliable performance with enhanced standard features. New design features include reliable spark to pilot ignition system, enhanced diagnostics, simplified servicing, significantly quiet operation and additional vent lengths.

  • Page 5: How To Use This Manual

    It is intended for this manual to be used by qualified service personnel for the primary purpose of troubleshooting and repair of the Bradford White Condensing PV Series water heaters. Understanding the sequence of operation section of this manual will contribute greatly to troubleshooting the water heater.

  • Page 6: Glossary Of Terms

    Condensing PV Series Specifications Power supply Dedicated 115 VAC, 60 Hz, 15A. Gas Supply Pipe Minimum 1/2” NPT (schedule 40 black iron pipe recommended). Approved Gas Natural Gas or Propane, unit must match gas type supplied. Type 5.0” w.c. min. for Natural Gas, 11.0” w.c. min. for Propane, 14.0” w.c. maximum Gas Pressure (Natural Gas &...

  • Page 7: Vent Tables

    Condensing PV Series Vent Tables Vent Tables 2" Diameter (5.1 cm) Vent Connector Lengths # of Maximum Straight Minimum Straight Terminating Elbows Length ft. (m) Length ft. (m) Through the Wall 45 (13.7) 2 (.6) Through the Wall 40 (12.2) 2 (.6)
  • Page 8 Condensing PV Series Vent Tables Vent Tables 4" Diameter (10.2 cm) Vent Connector Lengths # of Maximum Straight Minimum Straight Terminating Elbows Length ft. (m) Length ft. (m) Through the Wall 180 (54.9) 10 (3.1) Through the Wall 175 (53.3) 10 (3.1)

  • Page 9: Control Timings

    Condensing PV Series Control Timings Control Timings Ignition State Timing Pre-purge 2 Seconds Trial for Ignition 90 Seconds Flame Stabilization Period 3 Seconds Inter-purge 15 Seconds Flame Failure Response Time 1.5 Seconds (2 second maximum; 1 second minimum.) Post-purge 15 Seconds...

  • Page 10: Sequence Of Operation

    Condensing PV Series Sequence of Operation Power Up Sequence 1. Start Up. Upon power up, the control runs a safe-start check with a typical start-up delay of 5 seconds. 2. Flammable Vapor. To assure no outputs are energized if the “Simulated Resistive Device” is out of range, the control will test the “Simulated Resistive Device”...
  • Page 11 Condensing PV Series Normal Heating Sequence (cont.) 7. Steady state operation. During steady state operation, the control monitors: Thermostat temperature sensor-when the set point temperature is satisfied, the gas valve is shut down and the blower will post purge for 15 seconds. The control LED flashes a short flash once every 4 seconds (idle) status code.
  • Page 12 Condensing PV Series Sequence of Operation Abnormal Operation (cont.) times, then 3 times twice with 3 second pauses. The error self clears if the fault clears for at least 15 seconds. c. Water temperature in excess of ECO (Energy Cut Out) limit -The gas control immediately turns off the pilot &...
  • Page 13 Condensing PV Series Sequence of Operation Abnormal Operation (cont.) blower through post purge and flashes 6 times, then, a one time 3 second pause. The control waits 5 minutes before repeating the ignition sequence. 5. Flame sensing fault: a. Flame lost during run-the gas control turns off the pilot and main valves and runs blower for 15 seconds (inter-purge).

  • Page 14: Troubleshooting

    Condensing PV Series Troubleshooting Observe green LED indicator on electronic gas control. Error flash codes are displayed with a three second pause before repeating. Check and repair the system as noted in the troubleshooting table below. Service Procedure LED Status...
  • Page 15 Condensing PV Series Troubleshooting Service Procedure LED Status Control Status Probable Cause 1. Unstable pilot. Failed to light 2. Pilot tube blocked or restricted. Six-one flash, pilot. 3. Oxidation build up on pilot electrode. Page 18 three second 4. Wire damage to pilot assembly or bad...

  • Page 16: Burner Inspection, Cleaning & Replacement

    Condensing PV Series PV SERVICE PROCEDURE I Burner Inspection, Cleaning & Replacement Burner Inspection At periodic intervals (every 6 months) a visual inspection should be made of the pilot and main burner for proper operation and to ensure no debris is accumulating.
  • Page 17 Condensing PV Series PV SERVICE PROCEDURE I Burner Inspection, Cleaning & Replacement Burner Cleaning Step 1. Position the gas control power switch to the “OFF” position and unplug the water heater from wall outlet. Step 2. Turn off the gas supply to the water heater.

  • Page 18: Pilot Inspection Testing, Cleaning & Replacement

    Condensing PV Series PV SERVICE PROCEDURE II Pilot Inspection, Cleaning & Replacement Pilot Inspection, Cleaning & Replacement Step 1. Position the gas control power switch to the “OFF” position and unplug the water heater from wall outlet. Step 2. Turn off the gas supply to the water heater.

  • Page 19: Pressure Switch Testing & Replacement

    Condensing PV Series PV SERVICE PROCEDURE III Pressure Switch Testing & Replacement Pressure Switch Testing & Replacement WARNING 115 volt potential exposure. Use Step 1. Position the power switch on the gas caution to avoid personal injury. control to the “OFF” position.
  • Page 20 Condensing PV Series PV SERVICE PROCEDURE III Pressure Switch Testing & Replacement Pressure Switch Replacement WARNING 115 volt potential exposure. Use caution to avoid personal injury. Step 1. Position the gas control power switch to the “OFF” position. Step 2.

  • Page 21: Blower Testing & Replacement

    Condensing PV Series PV SERVICE PROCEDURE IV Blower Testing & Replacement Blower Testing & Replacement WARNING 115 volt potential exposure. Use caution to avoid personal injury. Step 1. Position gas control power switch to the “ON” position and adjust control to call for heat.
  • Page 22 Condensing PV Series PV SERVICE PROCEDURE IV Blower Testing & Replacement Blower Removal Step 1. Position the gas control power switch to the “OFF” position and adjust the control to call for heat. Step 2. Unplug the blower power cord from the wall outlet.

  • Page 23: Blower Temperature Switch Testing & Replacement

    Condensing PV Series PV SERVICE PROCEDURE V Blower Temperature Switch Testing & Replacement Blower Temperature Switch Testing Step 1. Position power switch on gas control to the WARNING 115 volt potential exposure. Use “OFF” position. caution to avoid personal injury.
  • Page 24 Condensing PV Series PV SERVICE PROCEDURE V Blower Temperature Switch Testing & Replacement Blower Temperature Switch WARNING 115 volt potential exposure. Use Replacement caution to avoid personal injury. Step 1. Position the gas control power switch to the “OFF” position and unplug the water heater from the wall outlet.

  • Page 25: Gas Control Testing & Replacement

    Condensing PV Series PV SERVICE PROCEDURE VI Gas Control Testing & Replacement Line Pressure The gas control is designed for a maximum line pressure of 14.0” w.c. and a minimum line pressure of 1.0” w.c. over the water heater’s rated manifold pressure (check rating plate).
  • Page 26 Condensing PV Series PV SERVICE PROCEDURE VI Gas Control Testing & Replacement ECO (Energy Cut Out) The Honeywell gas control is designed with an ECO device that will reset. If the control has gone into lockout due to excessive tank temperature(four flash, three second pause), reset the control by turning the gas control to the “LOW”...
  • Page 27 Condensing PV Series PV SERVICE PROCEDURE VI Gas Control Testing & Replacement Gas Control Removal From The Water Heater Step 1. Position the gas control power switch to the “OFF” position and unplug the water heater from the wall outlet.
  • Page 28 Condensing PV Series PV SERVICE PROCEDURE VI Gas Control Testing & Replacement Reinstallation of Inner Door Assembly c. Prior to reinstallation of inner door, fully inspect for the following: -Tears -Other imperfections that will inhibit proper seal -Missing material -Gasket adhesion to inner door...

  • Page 29: Simulated Resistive Device Testing

    Condensing PV Series PV SERVICE PROCEDURE VII Simulated Resistive Device Testing Simulated Resistive Device Testing Step 1. Position the power switch on the gas control to the “OFF” position. Step 2. Disconnect flammable vapor sensor or simulated resistive device from the gas control (model dependant).

  • Page 30: Safety Circuit Voltage Trace

    Condensing PV Series PV SERVICE PROCEDURE VIII Safety Circuit Voltage Trace Safety Circuit Voltage Trace NOTE: This procedure assumes a cool tank. Remove three screws (Phillips Screw driver) from the control access cover on the blower and remove the cover (see photo 17).

  • Page 31: 115 Vac Circuit Trace

    Condensing PV Series PV SERVICE PROCEDURE IX 115 VAC Trace 115 VAC Circuit Trace WARNING Step 1. Verify 115 VAC and proper polarity at wall 115 volt potential exposure. Use outlet. caution to avoid personal injury. Step 2. With unit plugged in and control power switch in the “ON”...

  • Page 32: Diptube Inspection & Replacement

    Condensing PV Series PV SERVICE PROCEDURE X Diptube Inspection & Replacement Diptube Inspection & Replacement WARNING Water heater components and stored water may be HOT when performing the following steps in this procedure. Take necessary precaution to prevent personal injury.

  • Page 33: Anode Inspection & Replacement

    Condensing PV Series PV SERVICE PROCEDURE XI Anode Inspection & Replacement Anode Inspection & Replacement This water heater has 2 anodes installed. Both anodes require inspection. WARNING Water Heater components and stored water may be HOT when performing the following steps in this procedure.

  • Page 34: Flue Baffle Inspection & Replacement

    Condensing PV Series PV SERVICE PROCEDURE XII Flue Baffle Inspection & Replacement Flue Baffle Inspection & Replacement Step 1. Position the gas control power switch to Loosen hose clamps the “OFF” position and unplug the with 5/16” nutdriver r blower from the wall outlet.
  • Page 35 Condensing PV Series PV SERVICE PROCEDURE XII Flue Baffle Inspection & Replacement Step 11. Remove the flue baffles and flue core from the water heater. Step 12. Inspect the baffles and flue core for deterioration. Clean any scale or debris build up. Replace with new baffles or flue core as necessary.

  • Page 36: Inner Door/Gasket Removal, Inspection & Replacement

    Condensing PV Series PV SERVICE PROCEDURE XIII Inner Door/Gasket Removal, Inspection & Replacement Inner Door Removal Procedure Step 1. Position gas control power switch to the “OFF” position. Step 2. Remove outer jacket burner access door. Step 3. Inner Door removal.
  • Page 37 Condensing PV Series PV SERVICE PROCEDURE XIII Inner Door/Gasket Removal, Inspection & Replacement Installation of Inner Door With Gasket WARNING Stripped fastener connections may allow for seal breach of Step 7. Clean any residual gasket residue or other debris from the inner door.
  • Page 38 Condensing PV Series PV SERVICE PROCEDURE XIII Inner Door/Gasket Removal, Inspection & Replacement Installation of Inner Door With Gasket (cont.) Step 10. Firmly place right side inner door flange against the left side inner door flange and secure with (2) ¼” hex drive screws from step 3b. DO NOT OVER TIGHTEN SCREWS.

  • Page 39: Condensate Trap Removal, Inspection & Replacement

    Condensing PV Series PV SERVICE PROCEDURE XIV Condensate Trap Removal, Inspection & Replacement Condensate Trap Removal, Inspection & Replacement The condensate trap has a self-priming trap that safely removes condensate from the water heater. If the condensate is not removed from the water heater, it will accumulate and eventually produce an error code.

  • Page 40: Exhaust Collector Removal, Inspection & Replacement

    Condensing PV Series PV SERVICE PROCEDURE XV Exhaust Collector Removal, Inspection & Replacement Exhaust Collector Removal, Inspection & Replacement The Exhaust Collector Gasket seals around the secondary flue tubes and between the jacket and the collector cover. This seal allows the exhaust to be concentrated into a single exhaust port and allows a passageway for the condensate to flow into the trap.
  • Page 41 Condensing PV Series PV SERVICE PROCEDURE XV Exhaust Collector Removal, Inspection & Replacement d. Align the gasket flange holes to go over the studs extending through the jacket. After verifying that the studs are through the flange holes and that the gasket is sealed around the secondary flue tubes, return the cover such that the studs extend through the openings.

  • Page 42: Parts List

    Condensing PV Series PARTS LIST 1. Exhaust Adapter 11. Heat Trap Insert 21. Washer 31. Burner 22. Exhaust Cover 32. Orifice 2. Blower 12. Hot Water Outlet 33. Pilot 3. Pressure Switch 13. Inlet Diptube 23. Condensate Tee 4. Blower Temp. Switch 14.

This manual is also suitable for:

Rc2pv50h n seriesRc2pv50h x seriesLc2pv50h76 n seriesLc2pv50h76 x seriesRc2pv50h6nRc2pv50h6n-475 ... Show all

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