Commissioning; Checklist Before Commissioning; Checklist During Commissioning; To Check The Minimum Flow Rate - Daikin EGSQH10S18AA9W Installation Manual

6 Commissioning

6 Commissioning
NOTICE
NEVER operate the unit without thermistors and/or
pressure sensors/switches. Burning of the compressor
might result.
6.1

Checklist before commissioning

Do NOT operate the system before the following checks are OK:
You read the complete installation instructions, as
described in the installer reference guide.
The indoor unit is properly mounted.
The following field wiring has been carried out according
to this document and the applicable legislation:
▪ Between the local supply panel and the indoor unit
▪ Between the indoor unit and the valves (if applicable)
▪ Between the indoor unit and the room thermostat (if
applicable)
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.
There are NO damaged components or squeezed
pipes on the inside of the indoor unit.
There are NO refrigerant leaks.
The correct pipe size is installed and the pipes are
properly insulated.
There is NO water and/or brine leak inside the indoor
unit.
There are no odour traces noticeable of the used brine.
The space heating air purge valve is open (at least 2
turns).
The pressure relief valves purge to a safe location when
opened.
The minimum water volume is guaranteed in all
conditions. See "To check the water volume and flow rate
of the space heating circuit and brine circuit" in
"3.2 Preparing piping" on
INFORMATION
The software is equipped with an "installer-on-site" mode
([4‑0E]), that disables automatic operation by the unit. At
first installation, setting [4‑0E] is by default set to "1",
meaning automatic operation is disabled. All protective
functions are then disabled. If the user interface home
pages are off, the unit will NOT operate automatically. To
enable automatic operation and the protective functions,
set [4‑0E] to "0".
12 hours after the first power-on, the unit will automatically
set [4‑0E] to "0", ending "installer-on-site" mode and
enabling the protective
installation – the installer returns to the site, the installer
has to set [4‑0E] to "1" manually.
Installation manual
20
page 4.
functions. If – after first
6.2

Checklist during commissioning

The minimum flow rate during backup heater/defrost
operation is guaranteed in all conditions. See "To check
the water volume and flow rate of the space heating circuit
and brine circuit" in "3.2 Preparing piping" on

To perform an air purge.

To perform an air purge on the brine circuit.
To perform a test run.
To perform an actuator test run.
Underfloor screed dryout function
The underfloor screed dryout function is started (if
necessary).
6.2.1

To check the minimum flow rate

1 Confirm according to the hydraulic configuration which space
heating loops can be closed due to mechanical, electronic, or
other valves.
2 Close all space heating loops that can be closed (see previous
step).
3 Start the pump test run operation (see
actuator test run" on page 21).
4 Go to [6.1.8]: > Information > Sensor information > Flow rate
to check the flow rate. During pump test run operation, the unit
can operate below this minimum required flow rate.
Bypass valve foreseen?
Yes
Modify the bypass valve setting
to reach the minimum required
flow rate + 2 l/min
Minimum required flow rate during backup heater operation
12 l/min
6.2.2 To perform an air purge
Prerequisite: Make sure that the leaving water temperature home
page, room temperature home page, and domestic hot water home
page are turned OFF.
1 Go to [A.7.3]: > Installer settings > Commissioning > Air
purge.
2 Set the type.
3 Select Start air purge and press
4 Select OK and press .
Result: The air purge starts. It stops automatically when done. To
stop it manually, press , select OK and press
6.2.3

Air purge function on the brine circuit

When installing and commissioning the unit, it is very important to
remove all air from the brine circuit.
NOTICE
It is required that the brine circuit is filled BEFORE the
brine pump test run is activated.
page 4.
"6.2.5 To perform an
No
In case the actual flow rate is
below the minimum flow rate,
modifications at the hydraulic
configuration are required.
Increase the space heating loops
that can NOT be closed or install
a pressure‑controlled bypass
valve.
.
.
EGSQH10S18AA9W
Daikin Altherma ground source heat pump
4P351747-1F – 2016.06