10 Commissioning
Installer reference guide
74
RVLQ05+08CAV4 + RHYHBH05AA + RHYHBH/X08AA +
RHYKOMB33AA
ROTEX HPU hybrid
4P355635-1 – 2013.05
space heating operation
When a space heating request is received from the indoor module,
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.
10 Commissioning
Especially for UK:
At the time of commissioning, complete all relevant sections of the
Benchmark Checklist on the backpages of this document.
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.
▪ Before startup, the installation must be powered for at
least 2 hours to allow the crankcase heater to operate.
10.1 Overview: Commissioning
Commissioning typically consists of the following stages:
1 Checking the "Checklist before test run".
2 Performing an air purge.
3 Performing a test run for the system.
4 If necessary, performing a test run for one or more actuators.
5 If necessary, performing an underfloor heating screed dryout.
6 Performing an air purge on the gas supply.
7 Performing a test run on the gas boiler.
10.2 Checklist before test run
Do NOT operate the system before the following checks are OK:
The indoor unit is properly mounted.
The outdoor unit is properly mounted.
The gas boiler 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 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 communication cable between the gas boiler and
the indoor unit is properly mounted.
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.
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.
There is NO water leak inside the gas boiler.
There is NO water leak in the connection between the
gas boiler and the indoor unit.
The shut-off valves are properly installed and fully open
(field supply).
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 gas boiler is switched ON.
Setting . is correctly set on the gas boiler.
▪ 0=for RHYHBH05 + RHYHBH08
▪ 1=for RHYHBX08
NOTICE
Before starting up the system, the unit MUST be energised
for at least 2 hours. The crankcase heater needs to heat
up the compressor oil to avoid oil shortage and
compressor breakdown during startup.
NOTICE
NEVER operate the unit without thermistors, burning of the
compressor may result.
NOTICE
Do NOT operate the unit until the refrigerant piping is
complete (when operated this way, the compressor will
break).
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