What to do if my Takagi T?K4?IN Water Heater does not ignite?
If the unit does not ignite when water goes through your Takagi Water Heater, ensure the flow rate is over 0.75 GPM. Check the filter on the cold water inlet and inspect for reverse or cross-connections. If you're using a remote controller, verify that the power button is turned on. Also, check if the inlet temperature is too high.
What to do if hot water is not available from my Takagi T?K4?IN Water Heater?
If hot water is not available when you open a fixture with your Takagi Water Heater, ensure the unit has a 120 VAC / 60 Hz power supply. If you're using a remote controller, check if the power button is on. Also, make sure the gas and water supply valves are fully open. Check if the filter on the cold water inlet is clean and ensure the hot water fixture is sufficiently open to draw at least 0.75 GPM through the heater. Finally, verify the unit isn't frozen and, for propane models, that there's enough gas in the tank/cylinder.
Why does the hot water from my Takagi Water Heater turn cold and stay cold?
If the hot water from your Takagi Water Heater turns cold and stays cold, ensure the flow rate is sufficient to keep the water heater running. If a recirculation system is installed, check that the recirculation line has enough check valves. Also, verify the gas supply valve is fully open and the filter on the cold water inlet is clean. Finally, make sure the fixtures are free of debris and obstructions, and check if the flow rate is too low.
How to fix fluctuation in hot water temperature from Takagi T?K4?IN?
If you experience fluctuation in hot water temperature with your Takagi Water Heater, start by checking if the filter on the cold water inlet is clean. Also, ensure the gas line is properly sized and the supply gas pressure is sufficient. Lastly, check for cross-connection between the cold and hot water lines.
What to do if Takagi T?K4?IN water is not hot enough?
If the water from your Takagi Water Heater is not hot enough, compare the flow and temperature using the charts. Check for cross plumbing between the cold and hot water lines. Ensure the gas supply valve is fully open and that the gas line is properly sized. Verify the gas supply pressure is adequate and that the set temperature is not set too low.
How to decrease time to get hot water from Takagi T?K4?IN?
If your Takagi Water Heater takes a long time to deliver hot water to the fixtures, it depends on the length of piping between the water heater and your fixtures. The longer the distance or the bigger the pipes, the longer it will take to get hot water. If you would like to receive hot water to your fixtures quicker, you may want to consider a hot water recirculation system.
Why is the water from my Takagi T?K4?IN too hot?
If the water from your Takagi Water Heater is too hot, check if the set temperature is set too high.
What to do if Takagi T?K4?IN Water Heater remote controller does not display anything?
If the remote controller for your Takagi Water Heater doesn't display anything when the power button is turned on, make sure the unit is supplied with power and that the connection to the unit is correct.
Why is the fan motor still spinning on my Takagi T?K4?IN after operation?
This is normal for Takagi Water Heater. After operation has stopped, the fan motor keeps running from 15 to 70 seconds in order to re-ignite quickly, as well as purge all the exhaust gas out of the flue.
Definitions of DANGER, WARNING, and CAUTION symbols used in the manual.
General guidelines for installation and safety precautions.
General installation requirements and recommendations for safe operation.
General rules and safety precautions for venting water heaters.
Specific instructions for exhaust venting of the appliance.
Diagrams illustrating different venting configurations for the appliance.
Clearance requirements for vent terminals based on location and type.
General guidelines for gas supply, pressure, and pipe sizing.
Procedures for connecting the gas supply to the water heater.
Table for sizing natural gas supply piping based on capacity and length.
Table for sizing propane supply piping based on capacity and length.
Instructions for measuring inlet gas pressure, to be performed by a professional.
Requirements and installation guidelines for the pressure relief valve.
Overview of the Easy-Link system for manifolding units.
Steps to connect multiple units using the Easy-Link system.
Common mistakes and incorrect configurations for the Easy-Link system.
Guidelines for using the water heater for space heating applications.
Instructions and diagrams for recirculation system setup.
Diagram for domestic and space heating applications.
Essential safety checks and instructions before initial operation.
Emergency procedure if gas is detected.
Critical safety warnings and instructions for operating the water heater.
Steps to take if a gas leak is suspected.
Step-by-step guide for safe and correct operation of the unit.
Procedure for safely shutting off the gas supply to the appliance.
General information regarding normal operation and safety.
How to adjust temperature settings without a remote controller.
Table showing dipswitch configurations for different temperature outputs.
Instructions for draining the unit and cleaning the water filter.
Troubleshooting common issues related to hot water temperature and flow.
Troubleshooting specific to the water heater unit.
Troubleshooting for optional remote controllers.
Troubleshooting for the Easy-Link multi-unit system.
Error code display and meaning for single unit installations.
Error code display and meaning for Easy-Link systems.
Detailed analysis and diagnosis of various error codes.
Exploded view and part identification for the burner assembly.
Exploded view and part identification for the computer board assembly.
Exploded view and part identification for the water way assembly.
Output temperature vs. GPM for T-KJr2-IN/OS models.
Output temperature vs. GPM for T-K4-IN/OS models.
Output temperature vs. GPM for T-D2-IN/OS models.
General| Model | T-K4-IN |
|---|---|
| Type | Indoor |
| Vent Type | Direct Vent |
| Fuel Type | Gas |
| Ignition Type | Electronic |
| Weight | 38 lbs |
| Category | Tankless Water Heater |
| Gas Type | Natural Gas |
| Ignition System | Electronic |
| Energy Efficiency | 82% |
| Maximum Temperature | 167°F |
| Venting | Category III Stainless Steel |
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