10 Hand-Over To The User; Maintenance And Service; Overview: Maintenance And Service - Rotex HPSU Bi-Bloc Ultra Series Installer's Reference Manual

To program an underfloor heating screed dryout
schedule
1 Set the user permission level to Installer. See
change the user permission
2 Go to [A.4.2]: Commissioning > UFH screed
dryout > Program.
3 Program the schedule:
To add a new step, select an empty line and change
its value. To delete a step and all steps below it,
decrease the duration to "–".
▪ Scroll through the schedule.
▪ Adjust the duration (between 1 and 72 hours) and
temperatures (between 15°C and 55°C).
4 Press the left dial to save the schedule.
To perform an underfloor heating screed dryout
Conditions: An underfloor heating screed dryout schedule has been
programmed. See "To program an underfloor heating screed dryout
schedule" [ 4 83].
Conditions: Make sure all operation is disabled. Go to [C]:
Operation and turn off Room, Space heating/cooling and Tank
operation.
1 Set the user permission level to Installer. See
change the user permission
2 Go to [A.4]: Commissioning > UFH screed dryout.
3 Select Start UFH screed dryout.
4 Select OK to confirm.
Result: The underfloor heating screed dryout starts.
It stops automatically when done.
5 To stop the underfloor heating screed dryout
manually:
1 Open the menu and go to Stop UFH screed
dryout.
2 Select OK to confirm.
To read out the status of an underfloor heating
screed dryout
Conditions: You are performing an underfloor heating screed
dryout.
1 Press the back button.
Result: A graph is displayed, highlighting the current
step of the screed dryout schedule, the total
remaining time, and the current desired leaving
water temperature.
2 Press the left dial to open the menu structure and to:
1 View the status of sensors and actuators.
2 Adjust the current program
To stop an underfloor heating (UFH) screed dryout
U3-error
When the program is stopped by an error, an operation switch off, or
a power failure, the U3 error will be displayed on the user interface.
To resolve the error codes, see
codes" [ 4 89].
error
Stop UFH screed dryout
To manually stop underfloor heating screed dryout:
1 Go to [A.4.3]: Commissioning > UFH screed
dryout
RRGA04~08DAV3 + RHBX04+08DA
ROTEX HPSU Bi-Bloc Ultra
4P495262-1B – 2019.10
"To —
level" [ 4 48].
—
"To —
level" [ 4 48].
—
—
—
"12.4 Solving problems based on
—

10 Hand-over to the user

2 Select Stop UFH screed dryout.
3 Select OK to confirm.
Result: The underfloor heating screed dryout is
stopped.
Read out UFH screed dryout status
When the program is stopped due to an error, an operation switch-
off, or a power failure, you can read out the underfloor heating
screed dryout status:
1 Go to [A.4.3]: Commissioning > UFH screed
dryout > Status
2 You can read out the value here: Stopped at + the
step where the underfloor screed dryout was
stopped.
3 Modify and restart the execution of the program
(a)
If the UFH screed dryout program was stopped due to a
power failure and the power resumes, the program will
automatically restart the last implemented step.
10 Hand-over to the user
Once the test run is finished and the unit operates properly, please
make sure the following is clear for the user:
▪ Fill in the installer setting table (in the operation manual) with the
actual settings.
▪ Make sure that the user has the printed documentation and ask
him/her to keep it for future reference. Inform the user that he can
find the complete documentation at the URL mentioned earlier in
this manual.
▪ Explain the user how to properly operate the system and what to
do in case of problems.
▪ Show the user what to do for the maintenance of the unit.
▪ Explain the user about energy saving tips as described in the
operation manual.
11

Maintenance and service

NOTICE
Maintenance MUST be done by an authorized installer or
service agent.
We recommend performing maintenance at least once a
year. However, applicable legislation might require shorter
maintenance intervals.
NOTICE
Applicable legislation on fluorinated greenhouse gases
requires that the refrigerant charge of the unit is indicated
both in weight and CO
2
Formula to calculate the quantity in CO
tonnes: GWP value of the refrigerant × total refrigerant
charge [in kg] / 1000
11.1 Overview: Maintenance and
service
This chapter contains information about:
▪ The yearly maintenance of the outdoor unit
▪ The yearly maintenance of the indoor unit
—
(a)
. —
equivalent.
equivalent
2
Installer reference guide
83