19
INS
TALLA
TION
English
ESP(External Static Pressure) Diagram
The illustration below shows the external static pressure of the unit depending on the water flow and the pump setting.
16 kW
Flow [l/min]
ESP [kPa]
9 kW
Water flow rate
9 kW : 26 LPM
Water flow rate
16 kW : 46 LPM
0
10
20
30
40
43
50
60
70
80
90
10
15
20
25
26
30
35
40
45
46
50
If the pressure loss of total system is over 43(9 kW) or 20(16 kW)kPa, additional water pump should be installed in series.
Otherwise, the flow rate might decreased, causing insufficient heating or cooling.
When ESP is not enough, additional pump should be installed. In this case, install the PWM control external type pump (Heating
type) additionally.
Connection guide of additional pump
Case 1) INV. pump
Connect the PWM control external type pump to PWM terminal block and power cable to the external contact terminal.
The maximum number of additional pump installation is one inverter pumps (Input power 100W).
1
Power supply (INV. Pump)
2
PWM control (for INV. Pump only)
Live additional pump
Neutral additional pump
B6
B1
Reference (GND)
PWM signal (SIG)
CAUTION
•
If there is wrong wiring between PWM and reference, INV. Water Pump may not work or wrong operation.
