Commissioning; Checklist Before Commissioning; Checklist During Commissioning; To Check The Minimum Flow Rate - Daikin EHVZ04S18DA6V Installation Manual

6

Commissioning

NOTICE
NEVER operate the unit without thermistors and/or
pressure sensors/switches. Burning of the compressor
might result.
6.1

Checklist before commissioning

Do NOT operate the system before the following checks are OK:
You read the complete installation instructions, as
described in the installer reference guide.
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 outdoor unit
▪ Between indoor unit and outdoor unit
▪ 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)
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.
Backup heater circuit breaker F1B (field supply) 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 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.
The domestic hot water tank is filled completely.
EHVZ04+08S18+23DA
Daikin Altherma – Low temperature split
4P495245-1B – 2017.12
INFORMATION
The software is equipped with an "installer-on-site" mode
([9.G]: Disable protections), that disables automatic
operation by the unit. At first installation, setting Disable
protections is by default set to Yes, meaning automatic
operation is disabled. All protective functions are then
disabled. If the user interface home pages are off, the unit
will NOT operate automatically. To enable automatic
operation and the protective functions, set Disable
protections to No.
36 hours after the first power-on, the unit will automatically
set Disable protections to No, ending "installer-on-site"
mode and enabling the protective functions. If – after first
installation – the installer returns to the site, the installer
has to set Disable protections to Yes manually.
6.2

Checklist during commissioning

The minimum flow rate during backup heater/defrost
operation is guaranteed in all conditions. See "To check
the water volume and flow rate" in
piping" on page 7.
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).
6.2.1

To check the minimum flow rate

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
perform an actuator test run" on
4 During pump test run operation, go to Sensors.
5 Select the flow rate information. During test run
operation, the unit can operate below the minimum
required flow rate.
6 Modify the bypass valve setting to reach the
minimum required flow rate + 2 l/min.
Recommended procedure for the main zone
INFORMATION
The pump of the additional zone ensures that the minimum
flow rate for correct operation of the unit is guaranteed.
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 Create a thermo request on the main zone only.
4 Wait 1 minute until the unit is stabilized.
5 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).
6 Commissioning
"3.2 Preparing water
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"6.2.4 To —
page 24).
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Installation manual
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