Rinnai Energysaver EX38C User Manual

Energysaver ®
Gas Direct Vent Wall Furnace
— Do not store or use gasoline or other ammable vapors and liquids in the vicinity of this or any other
appliance.
— WHAT TO DO IF YOU SMELL GAS
 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 instrucons.
 If you cannot reach your gas supplier, call the re department.
— Installaon and service must be performed by a licensed professional.
If the informaon in these instrucons is not followed exactly, a re or explosion
may result causing property damage, personal injury or death.
WARNING
READ ALL OF THE INSTRUCTIONS THOROUGHLY BEFORE INSTALLING OR OPERATING
THIS HEATER.
This manual provides information on the installation, operation, and maintenance of the heater. For
proper operation and safety, it is important to follow the instructions and adhere to the safety
precautions.
A licensed professional must install the fan convection heater according to the exact instructions
within this manual.
The consumer must read the entire manual to properly operate the heater and to have regular
maintenance performed.
EX38C ................. (RHFE-1005FTA)
Installer: Leave this manual with the appliance.
Consumer: Retain this manual for future reference.
This appliance may be installed in an aftermarket, permanently located, manufactured (mobile)
home, where not prohibited by local codes.
Register your product at www.rinnairegistration.com or call 1-866-RINNAI1 (746-6241)

Rinnai Energysaver EX38C Specifications

General

Model	EX38C
Fan Speed	Variable
Ignition	Electronic
Fuel Type	Natural Gas
Temperature Control	Thermostat
Safety Features	Flame Failure, Overheat

Summary

Important Safety Information

Gas Leak Detection and Response

Procedures for detecting and responding to gas leaks.

Consumer Safety Information

Safety Definitions and Practices

Explains safety symbols, hazard levels, and safe usage guidelines.

Appliance Specifications

Technical Specifications

Details appliance ratings, dimensions, weight, noise level, and safety features.

Key Appliance Features

Feature Overview

Highlights functionalities like programmable thermostat, child lock, and energy saving mode.

Control Panel Operations

Control Panel Layout and Functions

Describes the control panel buttons, display, and features like Child Lock.

Time and Temperature Settings

Setting Clock and Timers

Instructions for setting the clock and programming timer schedules for operation.

Care and Maintenance

Routine Cleaning and Checks

Procedures for cleaning filters, the exterior, and inspecting the flame.

Troubleshooting Guide

Pre-Service Call Checks

Steps to diagnose common issues before contacting a service technician.

Fault Code Diagnostics

Interpreting Appliance Fault Codes

List of displayed fault codes, their causes, and recommended remedies.

Installation Instructions

General Installation Requirements

Key warnings, codes, and general advice for installation.

Gas Connection and Clearances

Gas Supply and Combustible Clearances

Proper gas connection procedures and required distances from flammable materials.

Flue Terminal Clearances

Vent Termination Placement

Diagram illustrating minimum clearances for flue terminal placement.

Appliance Dimensions

Overall Unit Measurements

Diagrams showing the physical dimensions of the appliance in inches and millimeters.

Installation Parts List

Inventory of Supplied Components

List of parts included with the appliance for installation, with quantities.

Flue Manifold Installation

Assembling the Flue Manifold

Steps for disassembling, adjusting sleeve length, and attaching the flue manifold sleeve.

Connecting the Appliance

Final Assembly and Leveling

Steps to connect flue adapter, air inlet, back spacer, and level the appliance.

Adjusting Gas Pressure

Setting Gas Pressure by Altitude and Vent Length

Table and procedure for setting manifold gas pressure based on conditions.

Operating Instructions

Starting and Stopping the Heater

Steps to safely start, operate, and turn off the appliance, including manual valve operation.

Internal Component Overview

Cut-Away Diagram of Appliance Parts

Illustrates the internal components of the furnace with labels.

Electrical Wiring

Wiring Diagram Details

Shows the electrical connections, wire codes, and parts identification for the unit.

System Logic Diagram

Ladder Diagram of Control Circuits

Illustrates the control logic and circuit functions of the appliance.

Parts List

Component Identification

Identification and part numbers for major external and internal components.

Consumer Support

Warranty Coverage Details

Explains what the warranty covers, period of coverage for different parts.

Limited Warranty Terms

Service, Exclusions, and Limitations

How to get service, what is not covered, and warranty limitations.

State Regulations

Massachusetts Installation Requirements

Specific regulations for Massachusetts, including CO detectors and signage.