10 Operating the
W
ater Heater
The water heater is set to 48.5°C by default. To adjust the water
temperature:
1. Make sure that all hot water faucets are closed, and ensure
that the internal circulator and any external circulating
pumps are off.
Note
If a hot water faucet is open, you can adjust
the temperature only from 37°C-43°C.
2. Press the + (Up) or – (Down) buttons until the desired
temperature appears on the display. You can adjust the
temperature while the display is flashing. Once the display
stops flashing, the temperature setting is stored.
Note
The water heater will retain your settings
during a power outage.
You can adjust the temperature by the below 5-degree
increments, depending on the temperature range:
Temperature range
Ad
j
usting the water
temperature
36°C-50°C (Celsius mode)
0.5°C increments
50°C-60°C (Celsius mode)
Press for 2 seconds to adjust in
2°C increments
The water heater will not provide hot water instantly at the hot
water faucet unless a recirculation line has been installed from
the furthest fixture back to the water heater. For
“
A
”
models, the
unit must be set to
“
external recirculation
”
mode.
3.1 Turning the Water Heater On or Off
To turn the water heater on or off, press the Power button.
W
hen the power is on, the temperature will appear on the front
panel display.
3.2 Ad
j
usting the Water Temperature
WARNING
Before adjusting the water temperature, read
“
To prevent
burns:
”
on page 4 carefully.
W
ater above 50°C can cause
instant scalding or severe burns.
3. Operating the Water Heater
