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Takagi AT-D3U-OS User Manual

Takagi AT-D3U-OS
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37 Page
INITIAL OPERATION
Operation
1.
Once the above checks have been completed, please clean the filter
of any debris. Refer to p. 46 for instructions.
2.
Fully open the manual water control valve on the water supply line.
3.
Open a hot water tap to verify that water is flowing to that tap. Then
close the hot water tap.
4.
Fully open the manual gas control valve.
5.
Turn on the 120 VAC, 60 Hz power supply to the water heater.
6.
Now you are ready to enjoy hours of endless hot water.
 Check the GAS and WATER CONNECTIONS for leaks before firing the unit for the first time.
 Open the main gas supply valve to the unit using only your hand to avoid any spark. Never use
tools. If the knob will not turn by hand, do not try to force it; call a qualified service technician.
Forced repair may result in a fire or explosion due to gas leaks.
 Be sure to check for the presence of leaking gas toward the bottom of the unit because some
gases are heavier than air and may settle toward the floor.
 Check the GAS PRESSURE. Refer to p. 26.
 Do not try to light the burner manually. It is equipped with an electronic ignition device which
automatically lights the burner.
 Check for PROPER VENTING and COMBUSTIBLE AIR to the water heater.
 Purge the GAS and WATER LINES to remove any air pockets.
 Do not use this water heater if any part has been submersed under water. Do not attempt to
repair the unit. It must be replaced. Failure to follow these instructions could lead to property
damage, personal injury, or loss of life.
FOR YOUR SAFETY, READ BEFORE OPERATING
Inial operaon
Installaon Manual
IF YOU SMELL GAS:
 Do not try to start the water heater.
 Do not touch any electric switches; do not use any phone in your building.
 Immediately call your gas supplier from a neighbors phone. Follow the gas
suppliers instructions.
 If you cannot reach your gas supplier, call the fire department.
WARNING

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Takagi AT-D3U-OS Specifications

General IconGeneral
BrandTakagi
ModelAT-D3U-OS
CategoryWater Heater
LanguageEnglish

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