8 Hand-over to the user
Installer reference guide
18
07C2V3
ROTEX HPSU monobloc compact outdoor unit
4P501827-1 – 2017.08
The correct pipe size is installed and the
pipes
are
properly insulated.
There are no
water leaks
inside the outdoor unit.
The
shut-off valves
are properly installed and fully open.
The
pressure relief valve
purges water when opened.
The
minimum water volume
is guaranteed in all
conditions. See "To check the water volume" in
"5.3 Preparing water piping" on page 8
.
INFORMATION
For further commissioning instructions, see the installation
manual of the HPSU monobloc tank.
8
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:
▪ 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 on the url as earlier described 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 in relation to maintaining the unit.
9
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
In Europe, the
greenhouse gas emissions
of the total
refrigerant charge in the system (expressed as tonnes
CO
2
-equivalent) is used to determine the maintenance
intervals. Follow the applicable legislation.
Formula to calculate the greenhouse gas emissions:
GWP value of the refrigerant × Total refrigerant charge [in
kg] / 1000
9.1
Overview: Maintenance and
service
This chapter contains information about:
▪ The yearly maintenance of the outdoor unit
9.2
Maintenance safety precautions
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING
NOTICE: Risk of electrostatic discharge
Before performing any maintenance or service work, touch
a metal part of the unit in order to eliminate static electricity
and to protect the PCB.
9.2.1
Opening the outdoor unit
See
"6.2.2 To open the outdoor unit" on page 11
and
"6.2.3 To open
the switch box cover of the outdoor unit" on page 12
.
9.3
Checklist for yearly maintenance
of the outdoor unit
Check the following at least once a year:
▪ Heat exchanger
▪ Water pressure
▪ Water filter
▪ Water pressure relief valve
▪ Switch box
▪ Booster heater of the domestic hot water tank
Heat exchanger
The heat exchanger of the outdoor unit can get blocked up due to
dust, dirt, leaves, etc. It is recommended to clean the heat
exchanger yearly. A blocked heat exchanger can lead to too low
pressure or too high pressure leading to worse performance.
Water pressure
Check whether the water pressure is above 1 bar. If it is lower, add
water.
Water filter
Clean the water filter.
NOTICE
Handle the water filter with care. Do NOT use excessive
force when you reinsert the water filter so as NOT to
damage the water filter mesh.
1
3
2
5
4
Water pressure relief valve
Open the valve and check if it operates correctly.
The water may be
very hot!
Checkpoints are:
▪ The water flow coming from the relief valve is high enough, no
blockage of the valve or in between piping is suspected.
▪ Dirty water coming out of the relief valve:
▪ open the valve until the discharged water does NOT contain dirt
anymore
▪ flush the system and install an additional water filter (a
magnetic cyclone filter is preferable).
