SHOULD YOU ENCOUNTER ANY PROBLEMS INSTALLING THIS UNIT CALL
37
10
Electric Connections Accessories
Connecting external switch contact (Plus version only)
An external switch contact (e.g. switch or relay
contact) can be connected to the Plus version units.
This external switch contact can be connected to
connections no. 1 and no. 2 of 9-pole connector
X15; this 9-pole connector is directly accessible at
the rear of the top without having to dismount the
display cover (see also page 33). If a second input
is required as external switch contact, if necessary
connections no. 3 and no. 4 of the 9-pole connector
X15, which as standard are preprogrammed as
0-10 volt input, can be reprogrammed as second
input switch contact. Changing parameter 21 from
“0” to “1” will turn this 0-10 V input into an input
make contact. When using two switch inputs, switch
contact 1 (X15-1 & X15-2) always takes priority over
switch contact 2 (X15-3 & X15-4).
Setting
Parameter 18
Function conditions
Situation supply fan extract fan
Setting
parameters
19 & 20
Action supply or extract fan when
closing contact inputs X15-1 & X15-2
0 (factory
setting)
Contact input 1
15-1 & X15-2 closed
No action possible because contact input 1 has not been activated yet (parameter 18 is still at 0)
1
Contact input 1
15-1 & X15-2 closed
Action dependent on setting supply
fan (parameter 19) and extract fan
(parameter 20)
0
1
2
3
4
5
6
7
Fan switches off
Fan minimum flow rate (50m
3
/h)
Fan to flow rate mode 1
Fan to flow rate mode 2
Fan to flow rate mode 3
Fan to flow rate multiple switch
Fan to maximum flow rate
No fan activation
2
Contact input 1
15-1 & X15-2 closed
Satisfies bypass
conditions for valve open
1
3
Contact input 1
15-1 & X15-2 closed
The bypass valve opens; automatic
bypass control in units is overruled;
action fans dependent on parameters
19 & 20
4
Contact input 1
15-1 & X15-2 closed
Modifying parameter 18 enables, when closing
the input external switch contact 1 X15-1 and
X15-2, five different situations for the extract
fan to be set; dependent on the setting of
parameters 19 and 20, the supply and extract
fans can run at various flow rates (highest flow
rate is shown on the display).
A = Plus version
B = Plus version control board
C = Contact connected to switch input 1; for
instance a switch or a relay contact
D = Display Plus version (text “CN1” appears
when contact C is closed.)
1) Bypass conditions opening valve:
- outdoor temperature is higher than 10°C.
- temperature from atmosphere is at least lower than temperature from dwelling.
- temperature from dwelling is higher than the preset bypass temperature
(parameter 5).
When connections X15-3 and X15-4 are programmed as switch
input 2, parameters 24, 25 and 26 can be used to set the various
situations the same as for contact input 1. When closing contact
input 2, the display shows the text “CN2”.
Summary of Contents for energiSava 300
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