Checklist During Commissioning; Air Purge Function On The Water Circuit - Daikin Altherma 3 WS EWSAH06UD 9W Series Installer's Reference Manual

12.4 Checklist during commissioning

12.4.1 Air purge function on the water circuit

EWSAH/X06UD
Daikin Altherma 3 WS
4P675765-1 – 2022.04
Backup heater circuit breaker F1B (field supply) is turned ON.
The correct pipe size is installed and the pipes are properly insulated.
There is NO water leak inside the indoor unit.
The air purge valve is open (at least 2 turns).
The pressure relief valve purges water when opened. Clean water MUST come out.
The shut-off valves are properly installed and fully open.
The domestic hot water tank is filled completely.
The central water loop circuit and water circuit are filled correctly.
NOTICE
When the central water loop circuit is not ready to be used, the system can be set to
Compressor forced off mode. To do this, set [9.5.2]=1 (Compressor 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 central water loop circuit should NOT be performed until the
central water loop circuit is filled and Compressor forced off is deactivated.
To perform an air purge on the water 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).
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.
12 Commissioning
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Installer reference guide
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