Commissioning; Checklist Before Commissioning; Checklist During Commissioning; To Check The Minimum Flow Rate - Daikin Altherma EHVH08S18CB Installation Manual

6 Commissioning

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)
▪ 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, backup heater
circuit breaker F1B on the switch box is turned ON.
Only for tanks with built-in booster heater:
The booster heater circuit breaker F2B 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 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.
Installation manual
18
The minimum water volume is guaranteed in all
conditions. See "To check the water volume" in
"3.2 Preparing water piping" on
INFORMATION
The software is equipped with an "installer-on-site" mode
([4‑0E]), that disables automatic operation by the unit. At
first installation, setting [4‑0E] is by default set to "1",
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 [4‑0E] to "0".
36 hours after the first power-on, the unit will automatically
set [4‑0E] to "0", ending "installer-on-site" mode and
enabling the protective
installation – the installer returns to the site, the installer
has to set [4‑0E] to "1" 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 4.
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

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
actuator test run" on page 19).
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.
Bypass valve foreseen?
Yes
Modify the bypass valve setting
to reach the minimum required
flow rate + 2 l/min
Minimum required flow rate during defrost/backup heater
operation
04+08 models
11+16 models
EHVH/X04~16S18CB + EHVH/X08~16S26CB
page 4.
functions. If – after first
"3.2 Preparing water
"6.2.4 To perform an
No
In case the actual flow rate is
below the minimum flow rate,
modifications at the hydraulic
configuration are required.
Increase the space heating loops
that can NOT be closed or install
a pressure‑controlled bypass
valve.
12 l/min
15 l/min
Daikin Altherma – Low temperature split
4P384971-1E – 2018.02