12 Commissioning; Overview: Commissioning; Precautions When Commissioning; Checklist Before Commissioning - Daikin INTERGAS Altherma NHY2KOMB28AA Installer's Reference Manual

12 Commissioning

Domestic hot water operation
Not applicable for Switzerland
The domestic hot water supply has priority over space heating
performed by the gas boiler. If the flow sensor detects a domestic
hot water demand of more than 2 l/min, space heating by the gas
boiler will be interrupted. After the fan has reached speed code and
ignition is done, the boiler controller goes into domestic hot water
mode.
During the domestic hot water operation, the fan speed and hence
the appliance power are controlled by the gas boiler controller so
that the domestic hot water temperature reaches the domestic hot
water temperature setting.
The domestic hot water supply temperature must be set on the user
interface of the hybrid module. See the user reference guide for
more details.
Domestic hot water comfort function/Frost protection/Keep
hot function
Not applicable for Switzerland
appears on the display when either the domestic hot water comfort
function, the frost protection function or the keep hot function is
active.
space heating operation
When a space heating request is received from the outdoor unit, the
fan is started, followed by the ignition, and the space heating
operation mode. During the space heating operation, the fan speed
and hence the appliance power are controlled by the gas boiler
controller so that the space heating water temperature reaches the
desired space heating supply temperature. During the space heating
operation, the requested space heating supply temperature is
indicated on the operating panel.
The space heating supply temperature must be set on the user
interface of the hybrid module. See the user reference guide for
more details.
12 Commissioning
INFORMATION
The software is equipped with an "installer-on-site" mode
([A.6.D]: Disable protections) that disables automatic
operation by the unit. At first installation, the default setting
is Disable protections=On,
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=OFF.
12 hours after the first power-on, the unit will automatically
set Disable protections=OFF, 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=On manually.
Especially for UK:
At the time of commissioning, complete all relevant sections of the
Benchmark Checklist on the backpages of this document.
12.1

Overview: Commissioning

This chapter describes what you have to do and know to
commission the system after it is configured.
Installer reference guide
78
Typical workflow
Commissioning typically consists of the following stages:
1
2
3
4
5
6
7
12.2
12.3
After the installation of the unit, first check the following items. Once
all below checks are fulfilled, the unit MUST be closed, ONLY then
can the unit be powered up.
Depending on the system layout, not all components may be
available.
meaning automatic
Checking the "Checklist before commissioning".
Performing an air purge.
Performing a test run for the system.
If necessary, performing a test run for one or more actuators.
If necessary, performing an underfloor heating screed dryout.
Performing an air purge on the gas supply.
Performing a test run on the gas boiler.

Precautions when commissioning

INFORMATION
During the first running period of the unit, the required
power may be higher than stated on the nameplate of the
unit. This phenomenon is caused by the compressor, that
needs a continuous run time of 50 hours before reaching
smooth operation and stable power consumption.
NOTICE
NEVER operate the unit without thermistors and/or
pressure sensors/switches. Burning of the compressor
might result.

Checklist before commissioning

You read the complete installation instructions, as
described in the installer reference guide.
The outdoor unit is properly mounted.
The gas boiler is properly mounted.
In case of NHY2KOMB28+32AA gas boiler:
The following field wiring has been carried out according
to the available documentation and the applicable
legislation:
▪ Between the outdoor unit and the local supply panel
▪ Between the gas boiler and the local supply panel
▪ Between the outdoor unit and the gas boiler
(communication)
▪ Between the gas boiler and the room thermostat (if
applicable)
▪ Between the gas boiler and the domestic hot water
tank (if applicable)
In case of third-party gas boiler:
The following field wiring has been carried out according
to the available documentation and the applicable
legislation:
▪ Between the outdoor unit and the local supply panel
▪ Between the gas boiler and the local supply panel
▪ Between the outdoor unit and the gas boiler (bivalent
signal)
▪ Between the outdoor unit and the external pump
The system is properly earthed and the earth terminals
are tightened.
EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1A – 2019.05