Control Dial
When the boiler is operating,
Burner lamp is on.
Space heating Button
Push this button to turn
on space heating mode
and set the temperature
of space heating water.
When it’s turned on,
on left side of LCD.
Power button
Use this button to
turn on/off the boiler.
Outdoor Reset button
Indoor Temperature
Indicator
Indicates the current
room temperature of
around room controller
If there is not enough
water in appliance,
this lamp turns on.
Repeated timer setting button
Set range:1∼12 hours
Domestic hot water
temperature indicator
After pressing Domestic
hot water temperature
button, please set
domestic hot water
temperature by using
the control knob
Spacce heating
temperature setting
Repeated timer setting
Domestic hot water
temperature setting
DSR-420F
Temperature Control Indicator
and Button Function(DSR-420F)
During the cumbustion,
symbol displayed
Combustion Symbol
Low water level
warning light
℉
Press this button to
use the outdoor reset
function.
The function is
automatically setting
target temperature
for
with sensing outdoor
temperature.
space heating
Press the button to start
timer function and set off
time with the control knob.
This will force the unit to
run space heating mode
for 20 min every
(your set value) hrs.
AUTO.ECO
Press this button and use
the control knob to set hot
water temperature you want
Outdoor Reset lamp
This lamp indicates outdoor
reset function is turned on.
temperature will dispaly
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