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Rheem ECOH200DVRHLN Use And Care Manual
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Rheem ECOH200DVRHLN Use And Care Manual

Rheem ECOH200DVRHLN Use And Care Manual

Condensing tankless water heater
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www.ahridirectory.org
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NOTE TO CONSUMER: DO NOT DESTROY THIS MANUAL. PLEASE READ CAREFULLY AND KEEP ALL INSTRUCTIONS
FOR FUTURE REFERENCE.
The surfaces of these products contacted by consumable water contain less than 0.25% lead by weight, as
required by the Safe Drinking Water Act, Section 1417.
If the information in these instructions is not followed exactly, a fire or explosion may result, causing property damage, personal injury, or death.
• Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. To do so may result in
an explosion or fire.
• Installation and service must be performed by a qualified installer, service agency, or the gas supplier.
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions.
• If you cannot reach your gas supplier, call the fire department.
• Do not return to your home until authorized by the gas supplier or fire department.
This water heater is not suitable for use in manufactured (mobile) homes.
Printed in the USA.
®
lntertek
A
WARNING
FOR YOUR SAFETY!
WHAT TO DO IF YOU SMELL GAS
CONDENSING
WATER HEATER
Use and Care Manual
User's Information
180,000 I 199,000 Btu/Hr Models
ULTRA
LowNOx
Emissions
SCAQMD Rule 1146.2
TANKLESS
Installation
Start-Up
Maintenance
Parts
www.rheem.com
AP18733 REV. 3.2.17

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Summary of Contents for Rheem ECOH200DVRHLN

  • Page 1 • If you cannot reach your gas supplier, call the fire department. • Do not return to your home until authorized by the gas supplier or fire department. This water heater is not suitable for use in manufactured (mobile) homes. www.rheem.com Printed in the USA. AP18733 REV. 3.2.17...

  • Page 2: For Your Safety Read Before Operating

    FOR YOUR SAFETY READ BEFORE OPERATING WARNING : If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A.This appliance does not have a pilot. It is equipped with an ignition device which automatically lights the burner.
  • Page 3 In some circumstances, the property owner or his/her agent assumes the role, and at government installations, the commanding officer or departmental official may be the AHJ. NOTE: Rheem reserves the right to modify product technical specifications and components without prior notice. • FOR THE INSTALLER This manual must only be used by a qualified heating installer/service technician.
  • Page 4 TABLE OF CONTENTS USER'S INFORMATION ................................7 A. PRODUCT AND SAFETY INFORMATION ........................7 1. BEFORE OPERATION ..............................8 2. DURING OPERATION ..............................8 3. TROUBLESHOOTING AND GENERAL CAUTIONARY STATEMENTS ..............9 B. MAINTENANCE ................................10 1. SERVICE TECHNICIAN ............................. 10 2.

  • Page 5: Table Of Contents

    H. REMOVING A WATER HEATER FROM A COMMON VENT SYSTEM ................ 25 I. UNPACKING THE WATER HEATER ..........................25 J. WALL-MOUNTING THE WATER HEATER ........................26 VENTING ....................................27 A. INTAKE PIPE AND EXHAUST VENT GUIDELINES ..................... 27 B. APPROVED VENT MATERIALS ........................... 30 C.

  • Page 27: Venting

    VENTING Vent this water heater in accordance with these instructions. Failure to do so will result in property damage, severe personal injury, or death. DO NOT mix vent systems or materials unless specifically told to do so in this manual. DO NOT thermally insulate the exhaust vent or intake pipes.

  • Page 43: Additional Precaution For Excess Flow Valve (Efv)

    LP GAS TANK Figure 20 - LP Gas Piping Installation - NOTE: Capacity to be Not Less than Total Capacity of Connected Appliances C. ADDITIONAL PRECAUTION FOR EXCESS FLOW VALVE (EFV) ■ If an excess flow valve (EFV) is in the gas line, check the manufacturer's minimum and NOMINAL CLOSURE maximum flow capacity ratings.

  • Page 44: Fan Speed

    If the readings obtained are lower or higher than the combustion readings in Table 19, use a T15 Torx key to adjust the offset screw in a clockwise (positive) or counterclockwise (negative) direction (approximately 1/4 turn). See Figure 23. Check your combustion values. Repeat this procedure until the values obtained on the combustion analyzer agree with those stated in Table 18.

  • Page 59: Status Display Mode

    Figure 35 – DHW Set-Point Screens This indicates that the DHW Set-Point can be changed. Factory DHW Set-Point is 120°F(49°C). Initial DHW Set-Point range is 100 – 140°F (38 – 60°C). The recommended starting temperature is 120 °F (49°C). Turn the dial counterclockwise to lower and clockwise to raise the DHW set-point.

  • Page 60: Changing The Time

    Parameter Detail Description Current Flow Unit Flow Unit A:Li or GA (Li: Liters/min, GA: Gallons/min) Fan Speed (RPM) Current Fan Speed RPM Value b:Fr Lock Mode is In Use (ON) or Unused (OFF) Lock Mode C:Lc Allows user to lock out any temperature change. Operating Temperature Current Heat Exchanger Operating Temperature d:Op...

  • Page 61: Installer Mode

    ▪ G. INSTALLER MODE Figure 38– Installer Mode Screens Index Default Parameter Description Allows the Installer to View the Unit Error History Error History 1:EH Range: E0:XX – E9:XX EHIS :Error History rH : Burn Hour Clear Error & System bnCY : Burn Cycle 2:CE initialize...

  • Page 62: Using Recirculation Modes - Step

    Index Default Parameter Description Enables Cascade Mode on the water heater. Cascade 12:Cn Range: on – Cascade is used, oFF – Cascade is not used NOTE: 12:Cn must be set to On to select 13:Eh Enables Common Venting on the water heater. Common Vent 13:Eh Range: on –...
  • Page 63 5. Turn the dial to “Itnl” to turn on Internal Recirculation Mode, or “Etnl” to use External Recirculation, or “tt24” to use Title 24 application, or “bYPS” to use Bypass Valve. Press the dial button to select the setting and return to the installer Mode. NOTE: 7:RM can only be selected after 6:RC has been turned on.
  • Page 64 The following section details the various Recirculation Timer Functions. Step 1: Set the Recirculation Timer Type. Setting Detail Description Allows the installer to customize the Recirculation Function. The recirculation day and time values must be set in Step 2, SEt. seven (7) days.
  • Page 65 ▪ 2. Setting the Recirculation Run Time (Pro9 Recirculation Timer) NOTE: This step is only necessary if “Pro9” was selected as the Recirculation Timer Type. If “Auto” was selected the water heater will automatical- ly program its recirculation operating patterns. a.
  • Page 66 f. Turn the dial . The start time on the screen will change in increments of thirty (30) minutes. When the desired start time appears on the screen, press the button to select and store it. Next, turn the dial until the desired end time appears on the display.

  • Page 67: Error Mode

    Figure 48 – Resetting the Recirculation Run Time d. The Recirculation Run Time has now been reset to the factory default settings. Press to return to Standby Mode. NOTICE If hot water is not used for more than thirty (30) hours, the recirculation program will be stopped and the water heater will automatically go into Vacation Mode and display the vacation icon ▪...
  • Page 68 Error Code Error Code Description Possible Remedies This Error Code will go away when the DHW temperature decreases. If Error happens again: 1. Check if dip switch High Fire setting is ON. Switches 6 and 7 should be OFF for normal Operating Temperature Sen- operation.
  • Page 69 Error Code Error Code Description Possible Remedies Press the Power button to clear the Error Code. If Error happens again: 1. Check the vent connections for blockages. Fan Speed too High with Er:41 2. Check the burner assembly. Flame On 3.
  • Page 70 Error Code Error Code Description Possible Remedies Press the Power button to clear the Error Code. If Error happens again: 1. Turn power OFF and ON at the main power switch internal to the water heater. 2. Ensure fan inlet hole is completely open after turning the power OFF and ON. Er:67 AGM Error 3.

  • Page 71: Error Tree Analysis

    WARNING This water heater is equipped with a blocked vent shutoff system. If Error Codes Er:29, Er:41 or Er:94 occur, turn off the gas valve at the manual shutoff. Check the vent terminations for obstructions. If no obstructions are found, reset the water heater by pressing the power button. If the result in property damage, personal injury, or death.

  • Page 72: Gas Detection

    2. GAS DETECTION Figure 51 – Gas Detection Error Analysis Tree 3. AIR PRESSURE SWITCH Figure 52 – Air Pressure Switch Analysis Tree AP18733 REV. 3.2.17...
  • Page 73 4. Inlet / DHW / Operating Temperature SENSORS Figure 53 – Inlet / DHW / Operating Temperature Sensors Error Analysis Tree AP18733 REV. 3.2.17...

  • Page 74: Final Installation Checklist

    FINAL INSTALLATION CHECKLIST Is there enough space to ensure proper installation? Does installation location allow for proper service clearances? Are water and gas lines properly sized and set at proper pressures for the installation? BEFORE INSTALLING Is water heater location as near the exhaust vent / intake pipe terminations as possible? Have combustible materials been cleared from the installation location? Is there a drain close to the water heater? Does water heater loop piping meet the minimum sizing requirements listed?
  • Page 75 Visual check Port Port should show Figure 54 – Flame Sight Glass DHW Inlet Temperature Sensor (7850P-015) Exhaust Temperature DHW Inlet Temperature Sensor (7850P-015) Exhaust Temperature Sensor (7850P-070) Sensor (7850P-070) Temperature (°F/ °C) Resistance (Ω) Temperature (°F/ °C) Resistance (Ω) Resistance (Ω) Resistance (Ω) -4 / -20...

  • Page 76: Troubleshooting Chart

    TROUBLESHOOTING TROUBLESHOOTING CHART PROBLEM POSSIBLE CAUSES POSSIBLE REMEDIES 1. Is the plug on the power supply cord unplugged from the 1. Reset the plug. electrical outlet? 2. Reset the circuit breaker. No electrical power to the 2. Is electrical panel’s 10 Amp circuit breaker tripped? 3.

  • Page 77: Maintenance Procedures

    Check for 120V at the line voltage terminal block Correct wiring inside the water heater cabinet using located inside the water heater cabinet the wiring diagram in the installation manual Replace the fuse with the proper part found in the Inspect the fuse.
  • Page 78 WARNING personal injury or death. Visually inspect the intake piping for any signs of blockage. Inspect the entire length of the intake pipe to ensure piping is intact and all joints are problems are found. Check Pressure Relief Valve ● Visually inspect the primary pressure relief valve and discharge pipe for signs of weeping or leakage. ●...
  • Page 79 WARNING , or death. Operate Pressure Relief Valve ● Before proceeding, verify that the relief valve outlet has been piped to a safe place of discharge, avoiding any possibility of scalding from hot water. ● Shut power off to the water heater. To avoid scalding, wait for water heater to cool before operating the relief valve. WARNING To avoid water damage or scalding due to relief valve operation, a discharge line must be connected to the valve outlet and directed to a safe heater installation manual.
  • Page 80 Flushing the Water Heater Flushing the heat exchanger is a complicated procedure that should only be performed by a qualified service technician. NOTE: Improper maintenance WILL VOID water heater warranty. 1. Disconnect electrical power to the water heater. 2. Close the shutoff valves on both hot water outlet and cold water inlet lines (V1 and V2). See Figure 57. 3.

  • Page 81: Replacement Parts

    REPLACEMENT PARTS Figure 58 – Replacement Parts Ref # Description Ref # Description Front Cover Hot Water Pipe Assembly 1-1. Control Panel Bracket Rocker Switch 1-2. Control Panel Window Condensate Trap Exhaust Assembly Control Panel Air Intake Assembly Circulation Pump Air Intake Filter Mixing Valve Cold Water Valve Assembly...
  • Page 82 AP18733 REV. 3.2.17...
  • Page 83 800 Interstate Park Drive, Montgomery, Alabama 36019 800 Interstate Park Drive Montgomery, Alabama 36019 AP18733 REV. 3.2.17...

  • Page 84: Maintenance Report

    MAINTENANCE REPORT WARNING Allowing the water heater to operate with a dirty combustion chamber will hurt operation. Failure to clean the heat exchanger as needed by the installation location could result in water heater failure, property damage, personal injury, or death. Such product failures ARE NOT covered under warranty.

  • Page 85: Maintenance Notes

    MAINTENANCE NOTES AP18733 REV. 3.2.17...

  • Page 88: Customer Installation Record Form

    CUSTOMER INSTALLATION RECORD FORM The following form should be completed by the installer for you to keep as a record of the installation in case of a warranty claim. After reading the important notes at the bottom of the page, please also sign this document. Customer’s Name: Installation Address: Date of Installation:...