Zehnder Rittling ComfoAir 1500, Manual

Page: 16 / 48

16 - EN
5.16 External supply air temperature
sensor
When desired the supply air temperature can be
measured outside the unit. To use this function a
NTC sensor must be connected to one of the spare
temperature inputs (NTC6 located on the main PCB
or NTC7 located on the I/O PCB)
The external supply air temperature sensor can
only be connected to NTC6 or NTC7.
5.17 Battery
Warning for hot water battery!!
Its medium is warm or hot water under excess
pressure “Danger of combustion”.
When a battery is installed as default in the unit the
piping of the battery is sealed off with a compression
fitting.
1. Remove the sealing cap from the compression
fitting
2. Connect the piping system to the compression
fitting.
The following aspects must be taken into account,
while connecting the piping system:
�
Ensure the connection hoses are not in front of
the operating doors, as this might hinder the
checking and maintenance process;
�
The battery connections must be counterflow
connected to the airflow as indicated on the unit;
Cooler Heater
Code Decription
+ input
- output
�
When connecting the battery, the piping system
must be fitted with a good vent and drainage
system directly outside the unit.
Coupling
Drain
Vent
Compressed air connection
Air chamber
3. Tighten the compression fitting on both sides of
the compression fitting.
When tightening the connections to the battery,
the connecting stump must be held firmly in
order to avoid the battery connection being
bent or rotated, as this might otherwise result in
serious damage
Tighten coupling
Hold connection stump
Battery pump
When the battery is controlled by a pump (230V), this
battery pump must be connected to a power relay
output on the I/O PCB. Each battery pump must be
linked to its own power relay output on the I/O PCB.
Battery valve
When the battery is controlled by a valve (0-10V), this
battery valve must be connected to an analog output
on the I/O PCB. Each battery valve must be linked to
its own analog output on the I/O PCB.