Checklist During Commissioning; Air Purge Function On The Water Circuit - Daikin Altherma 3 GEO Series Installer's Reference Manual

11.4 Checklist during commissioning

11.4.1 Air purge function on the water circuit

EGSAH/X06+10UDA9W
Daikin Altherma 3 GEO
4P598592-1A – 2019.12
NOTICE
When the brine circuit is not ready to be used, the system can be set to HP forced
off mode. To do this, set [9.5.2]=1 (HP forced off = enabled).
Space heating and domestic hot water are then provided by the backup heater.
Cooling is NOT possible when this mode is active. All commissioning related to or
making use of the brine circuit should NOT be performed until the brine circuit is
filled and HP forced off is deactivated.
To perform an air purge on the water circuit.
To perform an air purge on the brine circuit via brine pump test run or 10-day brine
operation function.
To perform a test run.
To perform an actuator test run.
Underfloor screed dryout function
The underfloor screed dryout function is started (if necessary).
To start 10-day brine pump operation.
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.
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.
Typical workflow
INFORMATION
Start by performing a manual air purge. When almost all the air is removed, perform
an automatic air purge. If necessary, repeat performing the automatic air purge until
you are sure that all air is removed from the system. During air purge function, pump
speed limitation [9‑0D] is NOT applicable.
Make sure that the leaving water temperature home page, room temperature
home page, and domestic hot water home page are turned OFF.
11 Commissioning
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Installer reference guide
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