onsen ON-I14L-LP - User Manual

Questions and Answers

J
John LeeAug 5, 2025
What to do if my onsen ON-I14L-LP Water Heater has no power and the indicator light is off?
- B
  Brian ConnerAug 5, 2025
  If your Onsen Water Heater has no power and the indicator lamp isn't lit, there could be a couple of reasons. First, there might be a power outage. These units require 120V power to function. Use the unit when the power is restored. Also, check your circuit breaker and reset it if needed. If your circuit includes a ground fault circuit interrupter (GFCI), check and reset that as well. Secondly, the unit might be unplugged. Check the power plug to ensure it is properly connected and plug it in correctly.
R
Renee HarrisAug 15, 2025
Why is my Onsen Water Heater not turning on?
- M
  moraraymondAug 15, 2025
  If your Onsen Water Heater isn't turning on, it could be due to a power outage, as the unit requires 120V to operate. Use the unit when the power is restored. Check your circuit breaker and reset it if necessary. Also, examine the ground fault circuit interrupter (GFCI) if your circuit has one, and reset it if needed. Another possible cause is that the unit is unplugged. Make sure the power plug is properly inserted into the outlet.
M
michaelriceAug 25, 2025
How to fix an Onsen Water Heater that won't turn on?
- R
  Robert CarrilloAug 25, 2025
  If your Onsen Water Heater won't turn on, start by checking for a power outage. The unit needs 120V to run. Use the unit when the power is restored. Ensure your circuit breaker hasn't tripped and reset it if necessary. Also, check the ground fault circuit interrupter (GFCI) and reset it if needed. Then, verify that the unit is properly plugged into the outlet and plug the power plug properly.

Summary

INTRODUCTION AND SAFETY WARNINGS

Important Safety Instructions

Read and follow all instructions for basic precautions when using this gas water heater.

Safety Definitions

Defines DANGER, WARNING, and CAUTION symbols used to indicate potential hazards.

SAFETY PRECAUTIONS

DANGER Warnings

Warnings about using incorrect fuel gas or damaged vent piping, emphasizing CO risk.

General Warnings

Instructions on using licensed professionals, keeping area clear, checking water temp, and proper installation.

Equipment Safety Guidelines

Operational Safety

Guidelines on vent pipe connection, touching hot pipes, blocking vents, and electrical safety.

OPERATION

How It Works

Explains the gas heating process, temperature control, pressure, flow rate, and safety features.

Operating Instructions

Instructions for routine operation after installation and testing by a professional.

Routine Start Up

Control Panel Overview

Details on the control panel and display symbols for unit operation and settings.

Control Panel Functions

LED Display and Buttons

Explanation of LED display, buttons (On/Off, Increase, Decrease, Eco, Mode Selection) and their functions.

Temperature Control Settings

Step-by-step guide to setting the desired water temperature and operating modes.

SCALD PREVENTION

DANGER: Scald Hazard

Critical warning about water temperatures over 125°F causing severe burns or death, especially for vulnerable groups.

EXTENDED SHUTDOWN

Outage Protection Procedure

Procedures to protect the unit from freezing during extended shutdowns or power outages.

Extended Shutdown Procedure Details

Detailed steps for shutting down the unit, draining, and protecting it from freezing.

COLD WEATHER WARNINGS

Freezing Damage Prevention

Information on how freezing temperatures damage the unit and piping, and how to prevent it.

Maintaining Flow in Cold Weather

Steps to keep water flowing to guard against freezing, including closing valves and maintaining a trickle.

MAINTENANCE AND INSPECTION

Routine Inspection Recommendations

Recommendations for periodic inspection by a qualified technician and frequent visual checks by the owner.

Maintenance Checklist Items

Checklist items for cleaning the unit, air intake, water screen, and venting system.

MAINTENANCE PROCEDURES

Burner Inspection and Cleaning

Guide to inspecting the burner flame for evenness, color, and deposits, and cleaning procedures.

Fan Maintenance

Information on the fan motor's lubrication and replacement by a qualified technician.

Lime Scale Cleaning Procedure

Procedure Steps and Materials

Details on materials required and step-by-step instructions for descaling the unit.

Troubleshooting and Maintenance Warnings

Electrical Maintenance Warnings

Cautionary notes regarding wiring procedures during servicing for safety and proper operation.

Troubleshooting Common Issues

Table of common issues, possible causes, and solutions for operating difficulties.

Troubleshooting Guide

No Hot Water & Temperature Issues

Solutions for no hot water flow, incorrect temperature, low flow, and vent system problems.

DIAGNOSTIC CODES

Blower System Errors (E0)

Indicates blower system problems and provides solutions for foreign objects, fan breakdown, or wiring issues.

Temperature Sensor Errors (E1, E3)

Details errors related to outlet/inlet water temperature sensors, including loose connections or scaling.

Flame Detection Errors (E2)

Covers errors in flame detection circuitry, ignition sequence, or flameout, with troubleshooting steps.

INSTALLATION GUIDELINES

Qualified Personnel Requirement

Emphasizes that installation must be done by qualified personnel to avoid voiding warranty and ensure code compliance.

Outdoor Installation Prohibition

States that this appliance shall NOT be installed outdoors and requires professional leak testing.

Installation Requirements & Box Contents

Electrical and Gas Pressure Compliance

Details electrical grounding, gas pressure limits, and isolation during pressure testing as per codes.

Whats Included in the Box

Lists the components included with the water heater: unit, manual, relief valve, and pipe reducers.

LOCATION AND CLEARANCE REQUIREMENTS

Installation Location Guidelines

Choosing indoor location, avoiding specific rooms, recommended height, and requirements for power and gas lines.

Clearance Requirements

Table detailing required clearances from combustible and non-combustible materials for safe installation.

Mounting Instructions

Ensures vertical installation, proper cushioning on fireproof boards, and placement for LED visibility.

Electrical and Gas Piping Installation

Electrical Compliance

Ensures compliance with electrical codes and the availability of a grounded 120V/60Hz outlet.

Gas Piping Guidelines

Emphasizes professional installation, checking fuel gas type, pressure, and proper sizing of gas supply lines.

Water Piping Installation

Potable Water System Requirements

All piping must be approved for potable water, with recommendations for shutoff valves, drain valves, and unions.

Water Line Connections and Filter

Details on connecting piping, installing a pressure relief valve, purging water lines, and installing an inlet water filter.

AIR INTAKE AND EXHAUST (VENT) SYSTEM

Venting Safety and Compliance

Critical warnings about Carbon Monoxide from improper venting and compliance with codes like ANSI Z223.1/NFPA 54.

Vent Pipe Material and Installation

Specifies Category III direct vent, minimizing length, avoiding combined vents, and using approved materials like AL 29-4C Stainless Steel.

Vent Pipe Installation Details

Vent Pipe Sloping and Condensate

Ensures proper sloping for drainage and discusses condensate collectors for vertical vent configurations.

Air Intake and Vent Termination Clearances

Specifies clearances for termination points above snow level and from obstructions, and insulation requirements.

Air Intake Pipe Assembly

Instructions for assembling the air intake pipe using the included reducer and ensuring an airtight connection.

EXHAUST VENT PIPE ASSEMBLY

Vent Pipe Components and Standards

Details on using pipe reducers, adapter pipes, and UL certified stainless steel vent pipe as per standards.

Clearance Requirements Table

Table detailing specific clearances for Canadian and US installations based on reference codes.

Termination Details and Configuration

Elbows and Vent Length Calculations

Determining maximum vent length based on the number of 90-degree elbows used in the system.

Vertical Termination Configuration

Notes on air intake return bends, 90° elbows, and ensuring same pressure zone for intake and vent.

Vent Termination Diagrams

Horizontal Terminations

Diagrams and guidelines for air intake location relative to exhaust, angling for rain prevention, and pressure zones.

Recommended Vent Products & Start Up

Recommended Vent Products

List of Z-Flex Z-Vent products including part numbers and diameters for installation.

Start Up and Testing Warnings

Safety warnings and procedures for starting up the unit, including what to do if gas is smelled.

INITIAL START UP PROCEDURE

Gas and Water Valve Operation

Steps for checking gas supply, opening valves, and inspecting for leaks before initial operation.

Unit Activation and Testing

Instructions for plugging in the unit, turning it on, setting temperature, and testing hot water flow.

RELIEF VALVE INSTALLATION

Safe Operation Requirements

Ensures safe operation by specifying pressure ratings, BTU ratings, no valves between relief valve and heater, and discharge line requirements.

REFERENCE: WIRING DIAGRAM

Wiring Diagram Details

Schematic showing connections between the main board, control board, sensors, igniter, fan, and other components.

SYSTEM SPECIFICATIONS

Technical Specifications Table

Details model, appliance type, gas pressure, temperature range, dimensions, consumption, power, and safety devices.

DIMENSIONS AND COMPONENTS

Unit Dimensions

Diagrams showing the physical dimensions of the water heater in inches and millimeters.

Major Parts Identification

Diagram labeling key components of the water heater, including sensors, valves, fan, and control board.

LIMITED WARRANTY

Warranty Coverage Details

Specifies what is covered (material/workmanship defects) and the warranty period for parts and heat exchanger.

Making a Warranty Claim

Instructions on how to submit warranty claims, obtain RGA numbers, and responsibilities for shipping costs.

Warranty Exclusions

Excluded Conditions

Lists conditions under which the warranty is void, such as misuse, improper installation, neglect, or environmental factors.

Specific Warranty Limitations

Further Warranty Exclusions

Further exclusions include operation with non-potable water, freezing, extreme temperatures, spa/pool use, and chemically treated water.

onsen ON-I14L-LP Specifications

General

Model	ON-I14L-LP
Category	Water Heater
Fuel Type	Gas
Maximum Flow Rate	3.7 GPM
Ignition System	Electronic
Gas Type	LPG
Ventilation Type	Outdoor
Safety Features	Overheat Protection, Flame Failure Device

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