9
Commissioning
Installer reference guide
61
ERLQ004~008CA + 08S18CA3VF
Daikin Altherma low temperature split
4P3662261 – 2014.01
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 is caused by the
compressor, that needs a continuous run time of
50 hours before reaching smooth operation and stable
power consumption.
▪ Before startup, the installation must be powered for at
least 2 hours to allow the crankcase 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)
▪ Between the gas boiler and the local supply panel
(only applicable in case of hybrid system)
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 and outdoor units.
Depending on the backup heater type, the
backup
heater
circuit
breaker
F1B or F3B 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.
The
shutoff 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 energised
for at least 2 hours. The crankcase 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 removal of air in the water circuit will start.
There are 2 modes for purging air:
▪ Manually: the unit will operate with a fixed pump speed and in a
fixed or custom position of the 3way valve. The custom position
of the 3way valve is a helpful feature to remove all air from the
water circuit in the space heating or the domestic hot water
heating mode. The operation speed of the pump (slow or quick)
can also be set.
▪ Automatic: the unit automatically changes the pump speed and
the position of the 3way valve between the space heating or the
domestic hot water heating mode.
Make sure the user interface shows the home screens and that the
space heating and domestic hot water demands are turned off.
The air purge function automatically stops after 30 minutes.
INFORMATION
It is recommended to start the air purge function in manual
mode. When almost all of the 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 42
.
2
Set the air purge mode: go to [A.7.3.1]
> Installer settings >
Commissioning > Air purge > Type.
3
Select Manual and press
.
4
Go to [A.7.3.4]
> Installer settings > Commissioning > Air
purge > Start air purge and press
to start the air purge
function.
Result:
The manual air purge starts and the following screen
appears.
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