EH-105
24 VAC CONTROLS
EH-105
EH-105 has three 24 VAC control outputs. This display shows if they are free or
for what use they have been reserved. They are taken into use in this menu
according to the directions given below.
OK
-
+
Attention!
Attention! Outputs 42, 43 and 51 have continuous 24 VAC voltage if they are not
reserved for any use that appears on the menu.
The heating actuator output can be 3-point control (1-step AH unit) or the
damper actuator output can be a 24 VAC On/Off output. The selections in question
cannot be taken from use in this menu mode (see p. 34 and 37).
Press the
button to move the cursor to the control that you want to use. Press
.
Press the and
button to select the output by which 24 VAC control takes place (42,
43 or 51).
The
character indicates which controls are in use.
The character indicates that the control in question is not in use.
-
Select
Mainten.mode
24VAC controls
Instr.
p.23
42
24 VAC
24 VAC
24V VAC
51
43
Damper On/Off
Heating open
Heat. closed
IndicatorLamp
CoolRunPermit
Cooling pump
HRU pump
Heating pump
Exh. damper
ElHeatPermit
RegulControl
Night heat.
SmokeFireAl.
1-wire controlled On/Off damper actuator 24 VAC control.
Taken into use in damper actuator selections.
24VAC control, when the controller receives exhaust fan running information or the
On/Off damper function opens the damper.
1-step AH unit's 3-point controlled 24 VAC valve actuator control. Taken into use and
removed from use in heating actuator selection. Connector 42 = opening, connector
43 = closing.
Indicator light control of AH unit 1/1 (or Max) output control.
24 VAC running permit for a cooling unit. Conditions: The AH unit must be running,
the outdoor temperature must be higher than the cooling ”
” set value and
actuator control is above 2%. Attention! The cooling unit running permit is deleted if
actuator control of cooling has been at 0% for 20 min.
Glycol cooling pump 24 VAC control. Pump control according to the above mentioned
conditions.
HRU pump 24 VAC control. The pump runs when the AH unit runs and HRU control is
above 2%. The pump stops when the AH unit is shut down or HRU control has been
at 0% for 20 min.
Heating pump 24 VAC control. The pump runs when the outdoor temperature is below
the cooling ”
” set value or the heating actuator control is above 2%: The
pump stops when the heating actuator control has been 0% for 20 min. with the
outdoor temperature above the ”
” set value.
Permit from the controller to use the electric heater for heating while the AH unit is
running.
24 VAC is not realized if only switch control starts up the AH unit. 24 VAC control is
realized when the controller's automatic, timer or continuous control starts up the AH
unit. Use: opening of all after-treatment dampers.
24 VAC control when AH unit is running on night or preheating function.
The control of the smoke damper. When the smoke alarm or supply /exhaust fire risk
alarm is alarming 24 VAC control is disconnected.
Outd.inhibit
Outd.inhibit
Outd.inhibit
24 VAC-controls
Explanation:
Automatic interval use:
If the controller has stopped the cooling pump, HRU
pump or heating pump, the pumps are run for 5 minutes
every 24 hours from 03:00 03:05 A.M. This function
prevents the pumps from becoming stuck.
24 VAC Controls
CoolRunPermit
Damper ON/OFF
ExhaustDamper
Heating open
Heat. closed
Cooling pump
HRU pump
Heating pump
IndicatorLamp
ElHeatPermit
Regul.control
Night heat.
SmokeFireAl.
51
-
-
-
-
-
-
-
-
-
-
-
-
41
Heating actuator
Open direction
Heating actuator
Closed direction
In this example the outputs are the heating
and damper actuator outputs.
Damper actuator
Driven open
