Translation of original operating instructions
38
AL-KO EASYAIR
®
flat
NOTE
The output-side power supply must be implemented on-site.
3~
400V/50Hz
L1
N
GND
10V
L
PE
PE
X5
X5
X5
L3
L2
1~
230V/50Hz
0-10V
3
2
1
Fig. 25 Connection of electric air heater
1
Connection of power supply line
3
Connection of 0-100 % power request
2
Connection of enabling voltage
ATTENTION
For units without integrated control, flow monitoring and fan delay must be implemented
on-site.
5.6.7
Connection of hot water heater (WWE option)
For heating the supply air, a pump hot water air heater (PWW) can be used. Extraction and emptying of the heat exchang-
er must be carried out on-site. The heat exchanger has an air-side frost protection thermostat.
The additional unit must be flanged to the main device (see chapter “5.5 Assembly of the modules” on page 27
).
The feed and return lines are to be professionally connected on-site.
NOTE
Do not mix up the feed and return lines when connecting the pipelines.
The medium inlet is located on the air outlet side (
Fig. 27 Counterflow principle for heat ex
ATTENTION
Counter-hold using a suitable tool (e.g. pipe wrench) during connection of the heat exchang-
ers in order to avoid damage.
The limitation of the permissible heating medium temperature of the heat exchanger is to be
implemented on-site by the owner/operator.
Install pipes and connections in such a way that the heat exchangers remain freely accessible
for maintenance.
Maximum working pressure: 16 bar
Maximum hot water flow temperature: 120 °C
