Daikin EKHWS150D3V3, Руководство по установке

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8 Hand-over to the user
Installation manual
13
EKHWS150~300D3V3
Domestic hot water tank with option kit for air to water heat pump
system
4P510672-1B – 2018.01
7.2 Checklist before commissioning
After the installation of the unit, first check the following items. Once
all below checks are fulfilled, the unit MUST be closed, ONLY then
can the unit be powered up.
You read the complete installation instructions, as
described in the
installer reference guide .
The domestic hot water tank is properly mounted.
The system is properly earthed and the earth terminals
are tightened.
The fuses or locally installed protection devices are
installed according to this document, and have NOT been
bypassed.
The power supply voltage matches the voltage on the
identification label of the unit.
There are NO loose connections or damaged electrical
components in the switch box.
The booster heater circuit breaker F2B on the
switch box is turned ON.
There is NO water leak on the connections of the
domestic hot water tank.
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 7 .
Field wiring
Be sure that the field wiring has been carried out
according to the instructions described in the chapter
"6.5 Connecting the electrical wiring" on page 10 ,
according to the wiring diagrams and according to the
applicable legislation.
7.3 Checklist during commissioning
To perform a wiring check.
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.
9.1 Overview: Maintenance and
service
This chapter contains information about:
▪ The yearly maintenance of the domestic hot water tank
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.
WARNING
▪ Before carrying out any maintenance or repair activity,
ALWAYS switch off the circuit breaker on the supply
panel, remove the fuses or open the protection devices
of the unit.
▪ Make sure you do NOT touch a conductive section.
▪ Do NOT rinse the outside of the unit. This may cause
electric shocks or fire.
9.3 Checklist for yearly maintenance
of the domestic hot water tank
Check the following at least once a year:
▪ Temperature and pressure relief valve
▪ Inlet control group
▪ Relief valve of the domestic hot water tank
▪ Descaling
▪ Chemical disinfection
▪ Switch box
▪ Pressure relief valve hose
▪ Booster heater of the domestic hot water tank
Temperature and pressure relief valve (field supply)
Check for correct operation of the temperature and pressure relief
valve. Manually operate the temperature and pressure relief valve to
ensure free water flow through discharge pipe. Turn knob left.
Inlet control group (field supply)
The inlet control group is a pressure reducing valve with integrated
non-return valve and line strainer. Depending on local water
conditions, annual inspection of the integral line strainer, pressure
reducing valve cartridge and seating may be necessary.
Relief valve of the domestic hot water tank (field supply)
Open the valve and check the correct operation. 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 and clean the complete tank, including the piping between
the relief valve and cold water inlet.