Checklist During Commissioning; To Check The Minimum Flow Rate - Daikin Altherma 3 R F Installer's Reference Manual

10.4 Checklist during commissioning

10.4.1 To check the minimum flow rate

ERLA03DAV3 + EHFZ03S18DJ3V
Daikin Altherma 3 R F
4P596821-1 – 2019.10
The minimum flow rate during backup heater/defrost operation is guaranteed in all
conditions. See "To check the water volume and flow rate" in
4
piping" [ 54].
To perform an air purge.
To perform a test run.
To perform an actuator test run.
Underfloor screed dryout function
The underfloor screed dryout function is started (if necessary).
Mandatory procedure for the additional zone
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
4
run" [ 146]).
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 that is needed during defrost/backup
heater operation.
Yes
Modify the bypass valve setting to reach
the minimum required flow rate + 2 l/
min
Recommended procedure for the main zone
5 Confirm according to the hydraulic configuration which space heating loops
can be closed due to mechanical, electronic, or other valves.
6 Close all space heating loops that can be closed (see previous step).
7 Create a thermo request on the main zone only.
8 Wait 1 minute until the unit is stabilized.
9 If the additional pump is still assisting (the green LED on the right hand sided
pump is ON), increase the flow until the additional pump is NOT assisting
anymore (LED is OFF).
10 Go to [6.1.8]: > Information > Sensor information > Flow rate to
check the flow rate.
"10.4.4 To perform an actuator test
Bypass valve foreseen?
No
In case the actual flow rate is below the
minimum flow rate (required during
defrost/backup heater operation),
modifications at hydraulic configuration
are required. Increase the space heating
loops that can NOT be closed or install a
pressure controlled bypass valve.
10 Commissioning
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"7.2 Preparing water
Installer reference guide
143