Amount Of Hot Water; Remote Controller - Bosch YS2180RA Owner's Manual

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The water is cold when only a
single fixture is open.
Fluctuations in hot water
temperatures.
The amount of hot water at a
certain fixture is not constant.
The amount of hot water in the
bath is less/more than the set
amount.
The bath fill alarm does not
sound even when filled to the set
amount.
Amount of hot water available
has decreased over time.
The light on the operation button
does not come on.
26
Operating Instructions
• The unit will not heat the water if the flow rate is less than
2.5 litre per minute.
Open the fixture more or open other fixtures so that a greater
flow passes through the unit, and the unit should begin
heating again.
• Set water temperature at 48°C to 50°C. This will allow you
to use a higher flow of hot water thus meeting the minimum
flow requirement of 2.5 L/min.
• Clean the water filter of any debris (

Amount of Hot Water

• When hot water is demanded at other fixtures, the amount
available may be reduced. The maximum flow available
from YS2180 RA (5) (P) (5P) is 21 L /min., YS1780 RA (5)
(P) (5P) is 17 L /min. at a 25°C temperature rise.
• Pressure fluctuations and other plumbing conditions can
cause the temperature and pressure at a fixture to be
unstable, but it should stabilize after a short time.
• There are some types of hot water taps that discharges large
volumes of hot water at first but stabilize after time.
• To keep the temperature stable, the heater limits the
amount of water that can flow through it to a small amount
initially, but the amount increases over time.
• When hot water is used for other fixtures while filling the
bath, the bath will not fill as much.
• If there is water in the bath already, or when filling is
stopped and restarted, the bath will fill more.
• The bath fill alarm is set to sound when hot water
is continuously discharged for the set volume of water.
If mixing valves are used, or if cold water is mixed with hot
water at the fixture, the bath will fill more than the setting
of the bath fill function.
• Is the water filter clogged? (

Remote Controller

• Has there been a power failure?
• Is the power connected properly?
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