Commissioning; Overview: Commissioning; Checklist Before Test Run; Air Purge Function - Daikin Altherma Installer's Reference Manual

9 Commissioning

9 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 originates from the
compressor that needs elapse of a 50 hours run in
period before reaching smooth operation and stable
power consumption.
▪ Before startup, the installation must be powered for at
least 2 hours to allow cranckcase heater to operate.
9.1

Overview: Commissioning

Commissioning typically consists of the following stages:
1 Checking the "Checklist before test run".
2 Performing an air purge.
3 Performing a test run for the system.
4 If necessary, performing a test run for one or more actuators.
5 If necessary, performing an underfloor heating screed dryout.
9.2

Checklist before test run

Do NOT operate the system before the following checks are OK:
The indoor unit is properly mounted.
The outdoor 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)
▪ Between the indoor unit and the domestic hot water
tank (if applicable)
The system is properly earthed and the earth terminals
are tightened.
The fuses or locally installed protection devices are
according to this document, and have not been bypassed.
The power supply voltage on the local supply panel is
according to 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 and outdoor units.
Depending on the backup heater type, the backup heater
circuit breaker F1B or F3B on the switch box is turned
ON.
Only for tanks with built-in booster heater:
The booster heater circuit breaker F2B on the
switch box is turned ON.
There are NO refrigerant leaks.
The refrigerant pipes (gas and liquid) are thermally
insulated.
The correct pipe size is installed and the pipes are
properly insulated.
There is NO water leak inside the indoor unit.
Installer reference guide
68
The shut-off valves are properly installed and fully open.
The stop valves (gas and liquid) on the outdoor unit are
fully open.
The air purge valve is open (at least 2 turns).
The pressure relief valve purges water when opened.
NOTICE
Before starting up the system, the unit must be energized
for at least 2 hours. The cranckcase heater needs to heat
up the compressor oil to avoid oil shortage and
compressor breakdown during startup.
NOTICE
NEVER operate the unit without thermistors, burning of the
compressor may result.
NOTICE
Do NOT operate the unit until the refrigerant piping is
complete (when operated this way, the compressor will
break).
9.3

Air purge function

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.
There are 2 modes to purge air:
▪ Manually: the unit will operate with a fixed pump speed and in a
fixed or custom position of the 3-way valve. The custom position
of the 3-way valve is a helpful feature to remove all air from the
water circuit in space heating or domestic hot water heating mode.
The operation speed of the pump (slow or quick) can also be set.
▪ Automatic: the unit change automatically the pump speed and the
position of the 3-way valve between space heating or domestic
hot water heating mode.
The air purge function stops automatically after 30 minutes.
INFORMATION
It is recommended to start the air purge function in
manually mode. When almost all air is removed, it is
recommended to start the automatic mode. If necessary,
repeat the automatic mode until you are sure that all air is
removed from the system.
9.3.1

To perform a manual air purge

1 Set the user permission level to Installer. See "To set the user
permission level to Installer" on page 43.
2 Set the air purge mode: go to [A.7.3.1]
Commissioning > Air purge > Type.
3 Select Manual and press
4 Set the desired pump speed: go to [A.7.3.2]
settings > Commissioning > Speed.
5 Select the desired pump speed and press
Result: Low
Result: High
6 If applicable, select the desired position of the 3-way valve. If
not applicable, go to [A.7.3.4].
7 Set the desired position of the 3-way valve: go to [A.7.3.3]
Installer settings > Commissioning > Air purge > Circuit.
8 Select the desired circuit and press
> Installer settings >
.
> Installer
.
.
ERLQ004~008CAV3 + EHBH/X04+08CA
Daikin Altherma - Low Temperature Split
4P313774-1C – 2012.11
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