21
Operation Panel
* Only one operation panel can be connected to the water heater.
A malfunction may occur if two or more operation panels are connected.
* The water heater has been factory set to allow a maximum temperature setting of [120 °F / 50 °C].
To access higher temperature settings through the remote controller, follow the below steps.
<When setting the maximum temperature to [125 -140 °F / 55 - 60 °C]>
1. Turn the water heater off by pressing the Power On/Off Button on the operation panel.
2. Press and hold the FLOW METER ALARM SET Button until a sound is heard (2 sec.) and [120 °F / 50 °C]
appears on the display.
3. Set the upper limit of the hot-water supply temperature to [125 °F, 130 °F, 135 °F or 140 °F / 55 °C or 60 °C]
using the UP and DOWN setting Buttons.
4. To put the water heater back into operation, press the Power On/Off Button on the operation panel.
To keep the water heater off, let the unit sit for 30 sec. to return to the original display.
• This unit can be programmed so that it will default to one of three temperatures if the operation panel
is removed [140 °F (60 °C), 135 °F (57 °C), 120 °F (50 °C)]. To change the default temperature, adjust
the dip switches as described below. The default temperature is 120 °F (50 °C).
1. Disconnect electrical power to the water heater.
2. Remove the front cover of the water heater (4 screws).
3. Disconnect the remote controller. Adjust the dip switches as illustrated below.
4. Replace the front cover of the water heater (4 screws).
5. Reconnect electrical power to the water heater.
• When changing the temperature, make sure to confirm with the customer that the temperature of
the hot water will be very high and that there is a risk of scalding.
• Hot water heater temperatures over 125 °F (52 °C) can cause severe burns instantly or death
from scalding.
DANGER
* Do not change any other dipswitches.
* High temperature.
1
2
ON=
OFF=
[140 F/ 60 C]
[120 F/ 50 C]
[135 F/ 57 C]
Check
Check
