Rheem RHCGH200DV User Manual

94% CONDENSING
TANKLESS
WATER HEATER
AP15897 (03/11)
Printed in USA
* All models available for natural gas (N) or
propane gas (P) usage.
Do not destroy manual. Please read
carefully and keep in a safe place
for future reference.
CERTIFIED
R
Direct Vent Models
Rheem/EcoSense
CRTGH-95DV*
CRTGH-84DV*
CECOH200DV*
CECOH160DV*
Ruud
CRUTGH-95DV*
Paloma
CPHH-32RDV*
CPHH-25RDV*
Reliance
RHCGH200DV*
RHCGH160DV*
Outdoor Models
Rheem/EcoSense
CRTGH-95X*
CRTGH-84X*
CECOH200X*
CECOH160X*
Ruud
CRUTGH-95X*
Paloma
CPHH-32ROF*
CPHH-25ROF*
WARNING:
If the information in these in-
structions is not followed exact-
ly, a fire or explosion may result,
causing death, personal injury,
or property damage.
For Your Safety!
• D o 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.
What to Do If
You Smell Gas
• D o not try to light any
appliance.
• D o 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.
• I f you cannot reach your
gas supplier, call the fire
department.
• D o not return to your home until
authorized by the gas supplier
or fire department.
D
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I
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N
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®
USE AND CARE MANUAL
With Installation Instructions
for the Installer
Water Heaters for Other Than
Recreational Vehicle Installation Only

Rheem RHCGH200DV Specifications

General

Brand	Rheem
Model	RHCGH200DV
Category	Water Heater
Language	English

Summary

Important Safety Information

Safety Precautions

General safety rules to minimize risks during installation and operation.

What to Do If You Smell Gas

Immediate actions to take if a gas leak is suspected.

Safety Alert Symbols and Keywords

Definitions and meanings of safety alert symbols and keywords.

California Proposition 65 Warning

Warning regarding chemicals known to cause cancer or reproductive harm.

Water Heater Venting Safety

Dangers of Improper Venting

Risks associated with failure to install and properly vent the water heater.

Flammable Vapor Warnings

Precautions against flammable materials near the water heater.

Vent Installation Cautions

Important installation notes regarding vent connections and condensate.

Water Supply Safety

Water Temperature Dangers

Hazards of high water temperatures and scalding risks.

Water Supply Connection Warnings

Precautions for connecting water supply lines to the heater.

Water Supply Cautions & Notices

Guidelines for water quality, temperature, and operation.

Natural Gas and LP Safety

Gas Leak Detection and Hazards

Information on detecting gas leaks and associated dangers.

Gas Supply Installation Warnings

Key warnings for installing gas piping and connections.

Gas System Cautions

Important cautions for handling and operating the gas system.

Before Operating Safety

General Operating Precautions

Essential safety steps before operating the water heater.

Gas Leak Safety Procedures

Steps to follow if a gas leak is detected.

Operating Instructions

Starting the Water Heater

Step-by-step guide to turn on the water heater.

Turning Off Gas to Appliance

Procedure to shut off gas supply to the appliance.

Electrical Safety

Shock Hazard Warnings

Precautions to avoid electric shock during operation and servicing.

Electrical Installation Compliance

Requirements for field wiring and grounding.

California Installation Requirements

Specific seismic bracing requirements for California installations.

General Installation & Maintenance Safety

Installation and Maintenance Warnings

General safety warnings for installation and maintenance procedures.

Key Safety Precautions

Essential precautions before installation and operation.

Product Information

For Your Records

Section to record model, serial number, and installation details.

Read This Manual

Guidance on understanding and using the manual for maintenance.

Preoperating Checklist

List of checks to perform before operating the water heater.

Product Specifications

Direct-Vent Model Specifications

Technical details and dimensions for direct-vent models.

Outdoor Model Specifications

Technical details and dimensions for outdoor models.

Product Specifications Details

157k BTU Models Specifications

Detailed specs for 157k BTU models (NG/LP).

199.9k BTU Models Specifications

Detailed specs for 199.9k BTU models (NG/LP).

General Descriptions

Direct-Vent Water Heater Diagram

Illustration of typical direct-vent water heater components and connections.

Outdoor Water Heater Description

Outdoor Water Heater Diagram

Illustration of typical outdoor water heater components and connections.

Using Your Water Heater

General Safety Precautions for Use

Key safety rules to follow during operation.

Setting the Water Temperature

Scalding Hazard Warnings

Dangers of water temperatures above 125°F and scald potential.

Recommended Temperature Setting

Information on the recommended temperature and scald chart.

Remote Control Operation

Adjusting Water Temperature

How to adjust water temperature using the remote control.

Remote Control Features

Overview of remote control indicators and buttons.

Important Water Heater Facts

Key facts about water heater operation and safety.

Caring for Your Water Heater

Water Heater Inspections

Periodic checks for venting system and condensate collector.

Condensate Collector Care

Maintenance and safety for the condensate collector and drain.

Burner Inspection

Burner Inspection Procedure

Steps to inspect the main burner flames for proper operation.

Burner Operation Notice

Important notice regarding flame color and unusual burner operation.

Care and Cleaning

General Cleaning Precautions

Safety warnings and notices for cleaning the water heater.

Water Filter Cleaning Procedure

Step-by-step guide to cleaning the water filter.

Water Filter Maintenance

Water Filter Removal and Replacement

Instructions for removing, cleaning, and reinstalling the water filter.

Preventive Maintenance

User Preventive Maintenance Tasks

Recommended maintenance tasks for the user.

Professional Maintenance Recommendations

Tasks recommended for qualified service technicians.

Draining the Water Heater

Draining Procedure

Step-by-step instructions for safely draining the water heater.

Restoring Water Heater Service

Procedure to Return to Service

Steps to safely put the water heater back into operation after draining.

Freeze Protection

Water Heater Freeze Protection

Information on the heater's built-in freeze protection and external measures.

Running Water Freeze Protection

Method to protect against freezing using continuous water flow.

Vacation and Extended Shutdown

Shutdown Procedures and Warnings

Instructions and warnings for extended periods of non-use.

Troubleshooting Chart

Diagnosing and Fixing Common Problems

Guide to identify and resolve issues like no hot water or low flow.

Troubleshooting Common Issues

Resolving No or Insufficient Hot Water

Solutions for problems related to water temperature and flow.

Addressing Overheating Issues

Troubleshooting steps for water that is too hot or fan operation.

Service Error Code Chart

Understanding Error Codes

Guide to interpreting error codes and basic troubleshooting steps.

Resolving Persistent Error Codes

Steps to take if error codes persist after initial troubleshooting.

Error Code Troubleshooting Details

Specific Error Code Solutions

Table listing error codes, possible causes, and solutions.

If You Need Service

How to Call for Assistance

Contact information and required details for service support.

Installation Instructions

Contractor Installation Guide

Comprehensive guide for professional installation of the water heater.

Installation Standards and Location

Compliance with Codes and Standards

Requirements for installation according to national and local codes.

Choosing a Safe Location

Guidelines for selecting an appropriate and safe installation location.

Location Clearances and Restrictions

Minimum Installation Clearances

Required distances from combustible and non-combustible materials.

Prohibited Installation Locations

List of locations and conditions where installation is not permitted.

Product Inspection and Preparation

Pre-Installation Product Inspection

Steps to inspect the water heater and verify parts before installation.

Corrosive Atmosphere Considerations

Warning against installing near corrosive elements that damage the appliance.

Direct-Vent Water Heater Installation

Typical Direct-Vent Setup Diagram

Diagram illustrating the typical installation of a direct-vent water heater.

Outdoor Water Heater Installation

Outdoor Installation Warning

Critical warning against indoor installation of outdoor models.

Typical Outdoor Setup Diagram

Illustration of typical outdoor water heater components and connections.

Mounting the Water Heater

Wall Mounting Procedures

Instructions and precautions for securely mounting the water heater to a wall.

Venting for Direct-Vent Water Heaters

Venting Dangers and Requirements

Critical warnings and requirements for proper venting installation.

Recommended Vent Lengths and Clearances

Guidelines for vent pipe lengths, elbows, and terminal placement.

Horizontal and Vertical Venting

Horizontal Vent Installation Notes

Instructions and precautions for horizontal vent pipe installation.

Venting System Support and Slopes

Guidelines for supporting vent pipes and ensuring proper slopes.

Massachusetts Venting Requirements

Carbon Monoxide Detector Installation

Mandatory CO detector installation requirements for Massachusetts.

Venting Signage Requirements

Signage requirements for vent terminals in Massachusetts.

Horizontal Vent Terminal Location

Diagram and Clearance Zones

Illustration showing vent terminal locations and areas to avoid.

Vent Terminal Location Requirements

U.S. Vent Terminal Clearances

Dimensional requirements for vent terminal placement in the U.S.

Canadian Vent Terminal Clearances

Dimensional requirements for vent terminal placement in Canada.

Horizontal Venting Considerations

Condensate and Freeze Warnings

Warnings about condensate freezing and its effect on the building.

Multiple Unit Vent Spacing

Minimum spacing requirements for multiple vent terminations.

Horizontal Vent Installation Details

Pipe Joining and Cementing

Instructions for using solvent cement and primer for vent pipe connections.

Approved Venting Materials

List of approved materials for vent pipes and fittings.

Horizontal Vent Pipe Installation

Securing Vent Pipes

Instructions for fastening vent pipes and sealing penetrations.

Vent Terminal and Pipe Connections

Steps for connecting vent pipes and terminals.

Alternative Horizontal Vent Kits

Concentric Vent Termination Kit

Illustration and details for a concentric vent termination kit.

Flat Horizontal Termination Kit

Illustration and details for a flat horizontal termination kit.

Vertical Vent Installation

Vertical Vent Installation Warnings

Warnings and notices for vertical vent installation.

Air Intake Condensate Trap

Instructions for installing a condensate trap on the air intake pipe.

Vertical Vent Terminal Location

U.S. Vertical Vent Clearances

Clearance requirements for vertical vent terminals in the U.S.

Canadian Vertical Vent Clearances

Clearance requirements for vertical vent terminals in Canada.

Standard Vertical Vent Termination

Diagram of Vertical Termination

Illustration of a standard vertical vent termination setup.

Alternative Vertical Vent Termination

Diagram of Alternative Vertical Termination

Illustration of an alternative vertical vent termination setup.

Water Supply Requirements

Water Quality and Conditions

Mandatory water supply conditions to prevent damage and ensure operation.

Thermal Expansion Considerations

Requirement for expansion tanks in recirculation systems.

Water Supply Connection Cautions

Precautions for connecting water lines and handling cold environments.

Water Supply Installation

Water Pressure and Flow Guidelines

Guidelines for water pressure and flow rates for optimal heater performance.

Water Supply Installation Steps

Instructions for installing water shut-off valves and purge procedures.

Water Piping Connections

Cold and Hot Water Connection Notices

Notices regarding water flow direction and pipe drainability.

Service Valve Kit Installation

Information on using service valve kits for easier maintenance.

Relief Valve Installation

Pressure-Relief Valve Requirements

Requirements for installing a pressure-relief valve and its discharge line.

Relief Valve Installation Notices

Important notices and warnings regarding relief valve operation and installation.

Pipe Insulation and Condensate

Hot and Cold Pipe Insulation

Guidelines for insulating water pipes for energy efficiency and freeze protection.

Condensate Drainage Requirements

Mandatory requirements for proper condensate drainage to prevent damage.

Gas Supply Connections

Gas Type Conversion Warning

Warning against converting the water heater to a different gas type.

Gas Piping and Connection Notices

Notices regarding gas piping standards, pipe compound, and sizing.

Gas Piping Sizing

Gas Piping Sizing Procedure

Procedure and example for calculating required gas pipe size.

Gas Pipe Sizing Tables

Tables for determining pipe size based on gas type, length, and capacity.

Gas Supply Installation Steps

Installing Gas Shut-Off Valves and Connectors

Steps for installing manual shut-off valves and gas connectors.

Gas Line Pressure Requirements

Inlet gas pressure limits and what to do if pressures are incorrect.

Gas System Testing

Leak Testing Procedure

Method for testing gas connections and fittings for leaks.

Gas Supply Pressure Testing

Procedure for pressure testing the gas supply system.

High-Altitude and Electrical Wiring

High-Altitude Installation Adjustments

Information on altitude limitations and required adjustments.

Electrical Wiring Safety and Compliance

Critical warnings and compliance requirements for electrical connections.

Power Cord and Hard-Wiring

Guidance on power cord usage and hard-wiring procedures.

Remote Control Installation and Selection

Remote Control Location Considerations

Guidelines for choosing a safe and convenient location for the remote control.

Remote Control Models and Availability

Information on available remote control models and their temperature settings.

Connecting the Remote Control

Remote Control Wall Mounting

Steps for installing the remote control base plate on the wall.

Connecting Remote Control Cable

Instructions for routing and connecting the remote control cable.

Water Heater Remote Control Connection

Connecting the Remote Control Cable to Unit

Steps for connecting the remote control extension cable to the water heater unit.

Installation Precautions and Insulation

Insulation Blankets

Information regarding the necessity and use of insulation blankets.

General Installation Precautions

Key precautions to follow during the entire installation process.

Installation Checklist

Water Heater Location Checklist

Items to check regarding the water heater's installation location.

Ventilation Checklist

Items to verify for proper venting installation (indoor models).

Water Supply & Relief Valve Checklist

Items to check for water supply and relief valve installation.

Gas Supply Checklist

Items to verify for correct gas supply connections.

Electrical Wiring Checklist

Items to check for electrical wiring compliance.

Condensate Checklist

Item to verify for proper condensate drain installation.

Piping for Space Heater Applications

Combination Potable and Space Heating

Instructions and warnings for combined hot water and space heating systems.

Lighting and Operating the Water Heater

Pre-Operation Safety Warnings

Crucial safety warnings to read before lighting and operating the heater.

Water Heater Operating Instructions

Step-by-step guide for starting and operating the water heater.

Starting and Shutting Off the Water Heater

Step-by-Step Start-Up Procedure

Detailed steps for lighting and starting the water heater.

Procedure for Shutting Off the Heater

Instructions on how to safely turn off the water heater.

Setting the Water Temperature

Temperature Adjustment Warnings

Warnings about improper adjustments and scalding hazards.

Adjusting Temperature to 140°F (60°C)

Procedure to adjust temperature settings up to 140°F.

Water Temperature Adjustment Limits

Limiting Max Temperature to 120°F (49°C)

Procedure to limit the maximum water temperature to 120°F.

Minimum Temperature and Altitude Adjustments

Adjusting Minimum Temperature to 85°F (29°C)

Procedure to adjust the minimum water temperature setting to 85°F.

High-Altitude DIP Switch Settings

Instructions for adjusting DIP switches for high-altitude installations.

High-Altitude DIP Switch Adjustment Details

DIP Switch Settings by Altitude

Specific DIP switch settings for different altitude ranges.

Parts Replacement and Ordering

Parts Ordering Information

Instructions on how to order replacement parts.

Direct-Vent Gas Components

Diagram and list of components for direct-vent models.

Outdoor Gas Components

Outdoor Gas Components Diagram

Diagram and list of components for outdoor models.