Commissioning; Overview: Commissioning; Precautions When Commissioning; Checklist Before Commissioning - Daikin EGSQH10S18AA9W Installer's Reference Manual

9

Commissioning

9.1

Overview: Commissioning

This chapter describes what you have to do and know to
commission the system after it is configured.
Typical workflow
Commissioning typically consists of the following stages:
1 Checking the "Checklist before commissioning".
2 Performing an air purge.
3 Performing an air purge on the brine circuit.
4 Performing a test run for the system.
5 If necessary, performing a test run for one or more actuators.
6 If necessary, performing an underfloor heating screed dryout.
9.2

Precautions when commissioning

INFORMATION
During the first running period of the unit, the required
power may be higher than stated on the nameplate of the
unit. This phenomenon is caused by the compressor, that
needs a continuous run time of 50 hours before reaching
smooth operation and stable power consumption.
NOTICE
NEVER operate the unit without thermistors and/or
pressure sensors/switches. Burning of the compressor
might result.
9.3

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.
EGSQH10S18AA9W
Daikin Altherma ground source heat pump
4P351748-1D – 2016.02
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
"6.3 Preparing piping" on
9.4

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 "6.3 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).
9.4.1

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 58).
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
9.4.2 Air purge function on the space heating
circuit
When commissioning and installing the unit, it is very important to
remove all air in the water circuit. When the air purge function is
running, the pump operates without actual operation of the unit and
the remove of air in the water circuit will start.
NOTICE
Before starting the air purge, open the safety valve and
check if the circuit is sufficiently filled with water. Only if
water escapes the valve after opening it, you can start the
air purge procedure.
9 Commissioning
page 18.
page 18.
"9.4.5 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.
Installer reference guide
55