Takagi T-K2 - User Manual

T-K2 Instantaneous Water Heater
Installation Manual and Owner’s Guide
Flash Water Heater
Model T-K2
Suitable for potable water heating and space heating
FEATURING
• ENDLESS HOT WATER
• ON DEMAND
• COMPACT, SPACE SAVING
• ENERGY CONSERVING
• COMPUTER CONTROLS
• COMPUTERIZED SAFETY
• NO PILOT LIGHT
Takagi Industrial Co. USA Inc.
6 Goddard
Irvine, CA 92618
Toll Free (888) 882-5244
www.takagi-usa.com
FOR YOUR SAFETY - This product
must be installed and serviced by a
professional service technician or
licensed person, qualified in water
heater installation. Operation creates
carbon monoxide gas and flue gases,
which can cause serious injury or
death. Improper installation and/or
operation, or installation by an
unqualified person, will void warranty.
WARNING: If the information in this
manual 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 or liquids in the
vicinity of this or any other
appliance.
• WHAT TO DO IF YOU SMELL GAS
• Do not use any appliance.
•
Do not touch any electrical
switch
, do not use any phone
in your building.
•
Immediately contact your gas
supplier from another
location. Follow the gas
supplier’s instructions.
•
If you cannot reach your gas
supplier, call the fire
department.
• Installation and service must be
performed by a qualified installer,
service agency or the gas supplier.

Takagi T-K2 Specifications

General

Brand	Takagi
Model	T-K2
Category	Water Heater
Language	English

Summary

Safety Warnings and Procedures

For Your Safety

Important safety information and warnings for the installation and operation of the water heater.

General Warning

General warning about potential fire or explosion if manual instructions are not followed.

What to Do If You Smell Gas

Steps to take immediately if you detect the smell of gas.

Specifications

For Your Safety

Flow and Freeze Prevention

Freeze Prevention System

Freeze Prevention Instructions

Installation

General Installation Guidelines

Electrical Connections

Wiring Diagrams

Gas Supply Piping

Gas Supply Piping Sizing

Guidelines for sizing gas supply piping based on BTU demand and pressure requirements.

Water Plumbing

Water Plumbing Sizing

Guidelines for water line sizing and fixture unit calculations for adequate water pressure.

Pressure Relief Valve Requirements

Installation requirements and specifications for the pressure relief valve.

Installation Considerations

Combustible Air Supply

Indoor Installation Specifics

Exhaust Venting

Initiating the Appliance

Pre-Operation Safety Checks

Important safety checks and preliminary steps before initiating the appliance.

Initial Operation Procedure

Step-by-step instructions for the initial startup and operation of the water heater.

Operating Safety and Instructions

Pre-Operation Safety Warnings

Crucial safety warnings and precautions to be read before operating the water heater.

Operating Instructions

Turning Off Gas Supply

Hazard Warnings

Flammable Vapors

Warning about the dangers of flammable liquids and vapors near the water heater.

High Temperature Scald Risk

Warning regarding high water temperatures and the risk of scalds, especially for vulnerable individuals.

Maintenance

Troubleshooting

Water Not Hot Enough

Troubleshooting steps for when the water heater does not produce sufficiently hot water.

Slow Hot Water Delivery

Troubleshooting Continued

Unit Will Not Initiate

Troubleshooting steps for when the water heater fails to initiate operation.

Understanding Error Codes

Dipswitch Settings

Indoor NG Dipswitch Settings

Outdoor NG Dipswitch Settings

Dipswitch Settings Continued

Indoor LP Dipswitch Settings

Outdoor LP Dipswitch Settings