Daikin EKSR3PA, Инструкции по эксплуатации и монтажу

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5 x Operation
Operating and installation instructions
26
E EKSRDS1A
Control and pump unit for solar systems
4PW56033-1
5.2.8 Global reset function
The device responds to a global reset with a new start (self-test), all parameters are reset to the factory settings and all blocked
pump output stages are released. Reset by:
• pressing OK and arrow keys simultaneously.
5.2.9 Frost protection function
The solar system only starts up with active frost protection if the switch-on condition is fulfilled and the solar panel temperature
"T
K
" exceeds the value "T
K
save" (factory setting 40 °C). The BSK contact for solar priority is then activated at the same time
as the solar panel circuit pump. This prevents the plate heat exchanger from freezing at outside temperatures below 0°C.
5.2.10 Leak protection function
If no minimum flow start phase "V1" in accordance with Tab. 5-1 is detected at the FlowSensor after switching on or releasing
pump P
S
in maximum cut-in delay for tank circulation pump BSK "Time PsE", the following are possible:
– a fault in the FlowSensors or
– vapour formation in the solar circuit or
– a leak in the solar circuit.
To prevent the solar fluid from being pumped out of the system if there is a leak, the pump P
S
is shutdown for 2 h and the fault
signal "W" is shown in the left column of the display.
After three fault signals in succession the pump P
S
switches off permanently and the fault signal "F" is shown in the left column
of the display.
•
Replace faulty sensor or eliminate leak.
• Start system manually.
As soon as the control system records a solar panel temperature "T
K
" below
"T
R
min" (factory-defined frost protection return temperature), the frost
protection function is activated. It remains activated for 24 h after the limit
temperature has been exceeded.
While frost protection is active a star icon is shown in the standard temper-
ature display.
Fig. 5-5 Operating display when frost protection is
active
Fig. 5-6 Start and stop sequence (with FlowSensor EKSFLP12A) with frost protection function
BSK Cable for solar priority
P
S
Solar panel circulation pump
t Time
Time
PsA
(Zeit
PsA
) Switch-off delay BSK
Time
PsE
(Zeit
PsE
) Switch-on delay BSK
Time
UB
(Zeit
UB
) Reverse condition delay time
Zeit PsE Zeit PsE Zeit UB Zeit PsA
t
t
T - T T
K
*
AUS
S
D
T - T > T
K S
EIN
D
T - T T
V R
*
AUS
D
OFF
ON
Ps
BSK
T - T > T
K S
EIN
D