EH-105
HEATING
EH-105
Select
Mainten.mode
Heating
HEATING SETTINGS
P-area
I-time
D-time
Hysteresis
30 °C
80 s
0.0 s
0.5 °C
5 ... 100 °C
10 ... 500 s
0 ... 5.0 s
0.3 ... 3.0 °C
HEATING ACTUATOR SELECTION
HEATING TUNING VALUES
EH-105 heating has PID control. The hysteresis can be set if an electric heater
is in use.
Range:
Factory setting:
+
5...50°C
1...12°C
10...40°C
0...100%
0... 500s
8°C
6°C
25°C
40%
200s
The controller gives a freezing risk alarm and shuts down the supply air unit if the
radiator return water temperature drops below the ”FreezeRisk” setting. If the
outdoor temperature is above +7°C, the freezing protection set value is +4°C if
the freezing risk set value is below +20°C. The freezing risk alarm can be
acknowledged when the temperature is above the set value + 10°C.
The freezing anticipate function opens the valve if the radiator return water
temperature drops below the freezing risk set value + the freezing anticipate set
value (”Freeze risk + ”Freeze antic.”). The anticipate function does not function if
the outdoor temperature is above +7°C.
Radiator return water temperature during idle-time.
The position that the start-up function drives the valve actuator in as the AH unit
starts up. Is not in use with electric heater heating. The function is not in use
when the outdoor temperature is higher than the freezing risk set value.
Electric heater post-ventilation time. When the AH unit stops, the heat is turned
off and the fans continue to run for the electric heater post-ventilation time.
Freeze risk
Freeze antic.
Radiator RetT
StartPosit.
Post-vent
Heating functions are defined here. The controller activates heating if needed, so
the desired supply air temperature is reached. A radiator or electric heater can be
used for heating. With an electric heater solution the freezing protection function
is not in use.
Factory
setting:
Setting:
Range:
Explanation:
Heating
Operation mode
Settings
Tuning values
Actuator
Operating mode
Radiator
ElectricHeater
Not in use
PostVentilat. if
alarm stopped AH
Yes
No
Operating mode Settings
Tuning values
Actuator selection
HEATING OPERATING MODE
Radiator:
Electric heater:
A radiator is used for heating.
An electric heater is used for heating.
We recommend using an air flow detector with electric heater
heating. When the alarm comes from a flow detector, SF filter
PDE minimum pressure, SF fan PDS minimum pressure, or
when an A-alarm is given, the electric heater output drops to
zero.
Select the valve actuator control mode and set the drive time. The
drive time is the time during which the actuator continuously drives
the valves from a closed to an open position. The range is 5…150s.
The
character is at the selected control mode.
PWM start for the
semiconductor relay 10VDC, time span 30 s, control ratio 1/100.
37
Settings Heat.
Freeze risk
Freeze antic.
Radiator RetT
StartPosit.
%
Post-vent.
s
8
6
25
40
200
Tuning values
P-area
°C
I-time
s
D-time
s
Hysteresis
°C
30
80
0.0
0.5
Actuator
0-10V/time
s
2-10V/time
s
10-0V/time
s
PWM/time
s
3-p./time
s
15
15
15
15
15
Instr.
p.23
Only in
radiator units
Only in
electric
heater units
Note! Cascade control is not possible with 3-mode use.
The length of the AC frequency converters' deceleration
time cannot be more than 30 sec. to ensure that start-up
information coming to the controller leaves in time.
Otherwise the controller interprets running as external
control and generates a new post ventilation.
30s
60s
Pulse
10V
0V
Control of electric heater's solid state relay
PWM output for SSR 10 VDC. Interval length is 30 s and control ratio
is 1/100. Pulse length depends on controller-determined heating output.
For example, if the controller-determined heating output is 25 %,
pulse length is 25 % of interval length (25% * 30s = 7.5 s).
interval
length 30s
Time
e.g. 25 % heating output
7.5s
