Daikin EKSR3PA, Инструкции по эксплуатации и монтажу

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5 x Operation
E EKSRDS1A
Control and pump unit for solar systems
4PW56033-1
Operating and installation instructions
25
DT Nominal spread (calculated for the working point)
S1 Upper nominal spread (“spread 1")
S2 Tower nominal spread (“spread 2")
T
K
Solar panel temperature
T1 Minimum temperature of storage tank ("T
R
min")
T2 Booster temperature ("TK max")
T3 Cut-in protection temperature (“TK zul”)
— Nominal spread
--- Switching limits for pump modulation
Fig. 5-3 Temperature difference-dependent pump output control
A Start phase
B Operating phase (modulation)
C Flow stall
D Low pump output stages are automatically blocked
after flow stall
V Flow in solar panel circuit
V1 Minimum flow in start phase ("VS min")
V2 Minimum flow in operating phase ("S-flow")
t Time
t
1
Start run time of the solar panel circuit pump at 100%
("Time PsE")
t
2
Stabilisation time ("S-time")
t
3
Stall detection time (10 s)
Fig. 5-4 Example of modulation operation with blockage of the lower pump stages in systems with FlowSensor when the
minimum flow rate is not achieved
1K
1K
Ps
Ps
S2
S1
DT/K
T / °C
K
T1 T2 T3
Ps ? 100% Ps 0% Ps 100%
5K
BSK=1
BSK=0
V/l/m
in
t / sec
Ps100%
A A B B
t
3
t
1
t
2
t
2
t
2
t
2
C
D
V2
V1
0
2
4
6
8
10
12
14
0
100 200 300 400 500 600 700 800 900 1000