American Water Heater NonCondensing Outdoor Natural Gas GT110NE user manual

31    Page
Owner's Guide
CONGRATULATIONS
Congratulations and thank you for choosing our tankless water heater. 
Before use, we recommend that you read through this safety manual 
carefully.  Please refer to the back of the manual for details about the 
warranty.  Keep this manual for future reference.
If you lose the manual, contact the manufacturer or your local 
distributor.  When you call, please tell us the product name and the 
serial number of your unit written on the rating plate of the water...

32  Page
Operating Safety
Owner's Guide
OPERATING SAFETY
WARNING: If  you  do  not  follow  these  instructions  exactly,  a  fire  or  explosion  may  result 
causing property damage, personal injury or loss of life.
A.  This appliance does not have a pilot. It is equipped with an ignition device which automatically 
lights the burner.  Do not try to light the burner by hand.
B.  BEFORE OPERATING smell all around the appliance area for gas. Be sure to smell next to 
the floor because some gas is...

33    Page
Operating Safety
Owner's Guide
A pressure relief valve listed as complying with the standard for Relief Valve and Automatic Gas Shutoff 
Devices  for  Hot  Water  Supply  System, ANSI  Z21.22 ・  CSA  4.4,  shall  be  installed  at  the  time  of  installation 
of the water heater in the location specified by the manufacturer.  Local codes shall govern the installation of 
relief devices for safety operation of the water heater.  The relief valve must not be removed or plugged.
No valve...

34   Page
NORMAL OPERATION
GENERAL
TEMPERATURE SETTINGS
-With remote controller-
Normal Operation
Owner's Guide
WARNING
•	Hot water temperature above 125 °F (52 °C) can cause 
severe burns instantly or death from scalding. 
•	The outlet hot water temperature of the water heater is 
factory set at 122 °F (50 °C).
•	Feel the water temperature before bathing or showering.
HOT
•	Flow rate to activate the water heater: 0.5 gallon per minute at the default set...

35    Page
Normal Operation
Owner's Guide
b)  510 (T-D2) model: 9007603005 (TM-RE30)
“BUZZER”
“HOT”
“COLD”
“ON/OFF”
“TIME”
“INFO”
9007603005 (TM-RE30) 
1. Turn on the 120VAC power supply to the water 
heater.
2. Press the "ON/OFF" button on the remote to turn
the remote controller on. It shows the time and 
set temperature on the display as shown to the 
right.
3. Press the "HOT" button or the "COLD" button to
set the temperature.
You can set the temperature from 100 °F (37...

36   Page
Normal Operation
Owner's Guide
How to change to the High temperature mode
1. Turn off power to the remote controller by pressing the “ON/OFF” button.  (Lamp is OFF to indicate
that power is off.)
2. Simultaneously press and hold both the “HOT” and “COLD” buttons for at least 5 seconds. And then
make sure “1” (or “0”) is displayed on remote controller.
3. Press the “TIME” button. Make sure “OFF” and “F1” are displayed on remote controller.
4. Press the “INFO” button.  After, make sure “OFF”...

37    Page

1. Press the "TIME" button, then press the "HOT" or the "COLD" button to set the clock time.
2. Press the "TIME" button again to save and exit.
NOTE: If you want to hide the clock time, press and hold the "TIME" button for 3 seconds or longer.
 
The remote controller has a function that can change units of temperature and flow rate from “°F and 
GPM” to “°C and Liter / min”, please follow the procedures below:
1. Turn off power to the remote controller...

38   Page
Normal Operation
Owner's Guide
•	DO NOT adjust the let bank of DIPswitches for the 510 (T-D2) model.
•	Turn off the power supply to the water heater before changing the 
DIPswitch settings.WARNING
110 (T-KJr2) / 310 (T-K4) 
Computer board
DIPswitches
510 (T-D2)
Computer board
DIPswitches (Right bank)
Location of the bank of DIPswitches on the computer board
TEMPERATURE SETTINGS ON THE PCB
-WITHOUT REMOTE CONTROLLER-
Depending on the model, there are 4 or 8 temperatures that you can select...

39    Page
FLOW
•	This unit comes equipped with heating blocks to protect it against damages associated with freezing.
•	For this freeze protection system to operate, there has to be electrical power to the unit.  Damage to the heat 
exchanger caused by freezing temperatures due to power loss is not covered under the warranty.  In cases where 
power losses can occur, consider the use of a backup power supply.
•	The freeze protection system will activate when the freeze protection thermostat senses air...

40   Page
MAINTENANCE AND SERVICE
•	Clean the cold-water inlet filter. (Refer to Unit draining and filter cleaning section in this page.)
•	Be sure that all openings for combustion and ventilation air are not blocked.
•	The venting system should be checked annually for any leaks, corrosion, blockages or damage.
•	The burner should be checked annually for dust, lint, grease or dirt.
•	Keep the area around the water heater clear.  Remove any combustible materials, gasoline or any 
flammable vapors and...