Max Diff Cool
Max Diff Heat
Preheat. time
DevAlarm room
DevAlarm exh.
DevAlarm supp
DevAlrmDel
Flow alarm->
SF FlowA
EF FlowA
Alarm delay
SF FanMin
EF FanMin
SF Kvalue
EF Kvalue
Filter PDE->
SF 1/1 UpLi
SF MAX UpLi*
SF 1/2 UpLi
SF MIN UpLi*
SF filtMin
EF 1/1 UpLi
EF MAX UpLi*
EF 1/2 UpLi
EF MIN UpLi*
EF filtMin
1/1 switch
MAX switch*
1/2 switch
MIN switch*
50 °C
30 min
0.2 m/s
0.2 m/s
20 s
30 Pa
30 Pa
0000
0000
150 Pa
100 Pa
30 Pa
150 Pa
100Pa
30 Pa
0h00
0h00
30 °C
30 °C
2 h
1 ... 75°C
0 ... 90min
0.1 … 9.9m/s
0.1 … 9.9m/s
0 ... 500s
0...500 Pa
0...500 Pa
0...9999
0...9999
50 … 500Pa
50 ... 500Pa
0 ... 99Pa
50 ... 500Pa
50 ... 500Pa
0 ... 99Pa
0h00 ... 9h59
0h00 ... 9h5
9
1 ... 30°C
1 ... 30°C
0 ... 8 h
Alarm settings:
Deviation of the room air, exhaust air, or supply air temperature from the controller
determined setting value that causes an alarm to be given. Deviation alarms function
while the unit is running. A deviation alarm is not given if the outdoor temperature is
above the cooling "Outd.inhibit” set value and mechanical cooling is not in use.
Deviation alarm delay. The alarm is given if the deviation has lasted for the time set
here. Deviation alarms for room temperature, exhaust air and supply air have the same
delay time.
Minimum flow alarm. The alarm is given when the flow is below the limit set here (10 s)
and the AH unit has been running for at least 120s. In the event of an alarm: you can
choose whether or not the AH unit shuts down during the alarm.
The alarm delay for the alarms that do not shut down the AH unit. The controller gives
an alarm after a delay. Fire and freeze risk alarms do not have a delay.
Minimum value for pressure diff. above the supply and exhaust fan or over the meas.
ring volume of air flow. When the pressure is under the minimum value, an alarm is
given after 35 s, while the AH unit is running after which the AH unit is shut down.
The volume of air flow (m3/h, according to the standard ) is displayed in measurements
when the pressure difference over the meas. ring (installed in connection with the fan)
is measured and K-value has a value other than 0 (given by the manufacturer of the fan
or the meas. ring). The pressure diff. measurement (SF Fan/ EF Fan) is converted into
air flow volume)using the formula:
.If the K-value is expressed as l/s
(air flow volume), multiply the K-value by 3,6 and set the resulting value into the
controller. (Some manufacturers use also other characters, e.g. C).
Monitoring of filter minimum and maximum pressure differences by supply and/or
exhaust air pressure difference transmitters.
Maximum allowed difference between the room temperature and supply temperature
when dropping the room temperature. The recommended setting for displacement air
handling is approx. 5°C.
Maximum allowed difference between the room temperature and supply temperature
when raising the room temperature. (The recommended setting for displacement air
handling is approx. 2°C). If the supply air does not fall to floor level in an air heated
room, lower this setting (approx. 10°C) or use Heat enhancement, see page 31.
When moving from night heating to daytime temperature, the temperature can be
increased faster by starting to increase it by the preheating time before the clock
determined AH unit starting time. Preheating is not in use when the setting is at 0.
EH-105
Additional information about general settings
EH-105
AH unit control by a switch or press button:
Outdoor temp. limit below which night ventilation and night cooling are inhibited.
(See p. 38, 39)
Night heating hysteresis (0 = night heating is not in use). See p. 9. When the
temperature drops below the night heating setting, the AHU starts up at maximum output
and stops when the room temperature has risen the equivalent of NightHeatHys.
12 °C
0 °C
NightVentStop
NightHeatHys
5 ... 50°C
0.5 ... 5.0°C
Factory-
setting:
Text on the
display:
Setting
range:
Explanation:
25
When connecting switch or press button controls (e.g., "
”) to the controller's On/Off
inputs, the AH unit runs for the time, set here, that the press button is depressed. If a switch is in
use, the AH unit keeps running after switch control has been deleted for the post-run time set
here.*AC freq. converter controlled AH unit in use.
1/1 PowerSw
Supply air unit filter's pressure difference upper limit for the filter impurity alarm while the
AH unit is running at 1/1 output or maximum output*.
Supply air unit filter's pressure difference upper limit for the filter impurity alarm while the
AH unit is running at 1/2 output or minimum output*.
With AC freq. converter controlled AH units the alarm limit changes linearly / from the
”SF MAX UpLi” to the ”SF MIN UpLi” value according to the AH unit running speed.
Monitoring supply air unit running by the filter minimum pressure difference. The
function is not in use when the setting is at 0 or during night heating. If the controller
receives running information for 2 minutes and the pressure difference is not filled, a
flow alarm is given and the AH unit is shut down.
Exhaust air unit filter's pressure difference upper limit for the filter impurity alarm while
the AH unit is running at 1/1 output or maximum output*.
Exhaust air unit filter's pressure difference upper limit for the filter impurity alarm while
the AH unit is running at 1/2 output or minimum output*.
With AC freq. converter controlled AH units the alarm limit changes linearly from the ”EF
MAX UpLi” to the ”EF MIN UpLi” setting according to the AH unit running speed.
Monitoring exhaust air unit running by the filter minimum pressure difference. The
function is not in use when the setting is at 0 or during night heating. If the controller
receives running information for 2 minutes and the pressure difference is not filled, a
flow alarm is given and the AH unit is shut down.
m3/h = K *
p.
