EH-105
AH CONTROLS
Settings
EH-105
AH FAN CONTROL SETTINGS
Factory
setting:
The SF and EF fans run at a speed that produces 100% air volume or
maximum channel pressure.
Control by supply air fan's AC freq. converter. (0…10V control = 0…100%).
Maximum limit of AC freq. converter control in pressure controlled units.
Supply air unit channel pressure setting (or SF FanPDE). Attention! Setting the
”SF control” too low may limit realization of channel pressure.
Control by exhaust air fans's AC freq. converter (0…10V control = 0…100%).
Maximum limit of AC freq. converter control in pressure controlled units.
Exhaust air unit channel pressure setting(or EF FanPDE).
Attention! Setting the ”EF control” too low may limit realization of channel
pressure.
Deviation alarm setting (which changes according to the AH output) with AH at
minimum output.A deviation alarm is given when the SF and EF channel pressures
have deviated from the set value for 5 min. The deviation alarm is not in use at a0
setting.
100%
290Pa
100%
300Pa
100Pa
Select
Mainten.mode
AHU controls
AHU controls
Operation mode
Settings
Tuning values
Actuator
C
0 ... 100%
30 ... 3000Pa
0 ... 100%
30 ... 3000Pa
0 ... 300Pa
50%
220Pa
50%
230Pa
80Pa
50
SF control
SF pressure
EF control
EF pressure
Dev.alarm
Scale Displ
SF control
SF pressure
EF control
EF pressure
Dev.alarm
Max settings
Min settings
0 ... 100%
30 ... 3000Pa
0 ... 100%
30 ... 3000Pa
0 ... 300Pa
0...100%
See next page
See next page
Control by supply air fan's AC freq. converter. (0…10V control = 0…100%).
Minimum limit of AC freq. converter control in pressure controlled units.
Supply air unit channel pressure setting(or SF FanPDE). Attention! Setting the
”SF control” too high may limit realization of channel pressure.
Control by exhaust air fans's AC freq. converter (0…10V control = 0…100%).
Minimum limit of AC freq. converter control in pressure controlled units.
Exhaust air unit channel pressure setting(or EF FanPDE).
Attention! Setting the ”EF control” too high may limit realization of channel
pressure.
Deviation alarm setting (which changes according to the AH output) with AH at
minimum output. A deviation alarm is given and the AH unit is shut down when the
SF or EF channel pressure has deviated from the set value for 5 min. The
deviation alarm is not in use at a 300 setting.
AH output % display calibration. Set the value here that indicates the % of
maximum output air handling at minimum output. The AH output display is
calibrated so that the value set here appears on the display when AH is at
minimum output. AH output 100% always appears at AH maximum output.
The SF and EF fans run at a speed that produces minimum air volume or
minimum channel pressure.
Hint !
Hint !
The AH output % is made to
correspond to the actual air handling volume in
relation to the total air handling volume. (Enter
how many % of maximum air handling the
minimum air handling is.)
-30 -20
-10
0
10
20
30
100
AH output at different outdoor temperatures
OutdT/min
= -15°C
AH min output
AH output
%
0
OutdT/max
= +10°C
AH max output
Eg.
30
Settings
Max settings->
Min settings->
AHU maximum ->
AHU minimum ->
C
Max settings
SF control
%
SF pressure
Pa
EF control
%
EF pressure
Pa
Dev.alarm
Pa
100
290
100
300
100
C
Min settings
SF control
%
SF pressure
Pa
EF control
%
EF pressure
Pa
Dev.alarm
Pa
Scale Displ
%
50
220
50
230
80
50
C
Explanation:
Setting:
Range:
Instr.
p.23
