4 Operation
User reference guide
10
RGSQH10S18AA9W
ROTEX HPU ground
4P374247-1 – 2014.03
INFORMATION
In case of error code AH and no interruption of the
disinfection function occurred due to domestic hot water
tapping, following actions are recommended:
▪
When the Domestic hot water > Type > Reheat or
sched. is selected, it is recommended to
program the start-up of the disinfection function at least
4 hours later than the last expected large hot water
tapping. This start-up can be set by installer settings
(disinfection function).
▪
When the Domestic hot water > Type > Scheduled only
is selected, it is recommended to program a Storage
eco 3 hours before the scheduled start-up of the
disinfection function to preheat the tank.
To determine which DHW tank mode you are using (method 1)
Check the installer settings table filled in by the installer.
To determine which DHW tank mode you are using (method 2)
Prerequisite:
User profile = Detailed.
1
Go to the DHW tank temperature home page (Tank).
2
Check which icons are displayed:
If… is displayed
Then the DHW tank mode =…
Reheat mode
Scheduled mode
Sch reheat mode
4.5.2
Reheat mode
In reheat mode ( ),the DHW tank continuously heats up to the
temperature shown on the DHW tank temperature home page
(example: 50°C).
t
60°C
00:00
07:00
50°C
15°C
40°C
14:00
21:00
1
2
3
4
Tt
T
t
DHW tank temperature
t
Time
In reheat mode, you can do the following:
You can…
Location
Read out
the desired reheat
temperature.
DHW tank
temperature
home page
Adjust
the reheat
temperature.
Condition: is displayed on the DHW tank
temperature home page.
Activate
the DHW tank
booster mode.
You can…
Location
(Only for field supplied domestic hot water
pump for secondary return)
Program a domestic hot water pump schedule
to determine when to turn ON and OFF the pump.
When turned ON, the pump runs and makes sure
hot water is instantly available at the tap. To save
energy, only turn ON the pump during periods of
the day when instant hot water is necessary.
Menu structure
See also:
▪
"4.5.5 Using the DHW tank temperature home page" on page 11
▪
"4.5.6 Using the DHW tank booster mode" on page 12
▪
"4.7 Preset values and schedules" on page 14
4.5.3
Scheduled mode
In scheduled mode ( ), the DHW tank produces hot water
corresponding to a schedule. The best time to allow the tank to
produce hot water is at night, because:
▪
The space heating demand is lower
▪
Electricity tariffs are lower
Example:
t
60°C
00:00
07:00
50°C
15°C
40°C
14:00
21:00
1
2
3
4
5
Tt
T
t
DHW tank temperature
t
Time
▪
Initially, the DHW tank temperature is the same as the
temperature of the domestic water entering the DHW tank
(example:
15°C
).
▪
At 00:00 the DHW tank is programmed to heat up the water to a
preset value (example: Storage comfort
= 60°C =
[6-0A]).
▪
During the morning, you consume hot water and the DHW tank
temperature decreases. As long as the DHW tank temperature
stays above
40°C
, hot water is available.
▪
At 14:00 the DHW tank is programmed to heat up the water to a
preset value (example: Storage eco =
50°C =
[6-0B]). Hot water is
available again.
▪
During the afternoon and evening, you consume hot water again
and the DHW tank temperature decreases again.
▪
At 00:00 the next day, the cycle repeats.
