14
iCON iSOLAR 4” PDP Instruction Manual
6f.
iSOLAR PDP4 pump installation notes cont.
PRESSURE PIPE SELECTION
The iSOLAR PDP has a helical rotor. This type of pump can generate extremely high
pressures, particularly if they continue to operate in a no-flow / dead-head
situation.
Model
Hmax
Approx. pressure Bar/PSI
PDP4 Solar 900
300m
29.41 bar / 426.6 PSI
PDP4 Solar 1200
200m
19.61 bar / 282.4 PSI
PDP4 Solar 1500
140m
13.73 bar / 199.1 PSI
•
Select and use suitably pressure rated water delivery piping.
•
It is
essential
to fit a switching device to the delivery line to prevent closed head
operation.
•
Open loop pipe systems minimise risk.
PRESSURE PIPE SIZING
The iSOLAR PDP4 range has modest output flows of so the resulting pipe friction losses
are low. The correct pipe sizing allows for the possibility of very long delivery piping.
The following table is a ‘worst possible case’ example. The pressure loss values per
100m of pipe length are for 16 bar rated pressure supply pipe at 3 flow rates.
Friction loss per 100m of pipe
Pipe size
10 lpm
20 lpm
40 lpm
MD
25
PN16
2.88 m
9.83 m
33.58 m
MD
32
PN16
0.90 m
3.06 m
10.47 m
MD
40
PN16
0.31 m
1.05 m
3.59 m
MD
50
PN16
0.10 m
0.36 m
1.22 m
LOW VOLTAGE, LOW-LEVEL FLOAT
(dry-run protection -
See Page 10.
)
•
The low-level float MUST be fitted into the TWL circuit to prevent dry running.
Installing a PDP4 pump without the low-level float voids warranty.
•
The low-level float must be a minimum of 150mm above the pump inlet
If the float shuts the pump down due to a lack of water, the LED on the
controller display labelled ‘TANK FULL’ will illuminate.
When the water level rises the pump will restart after a 10-minute delay
PUMP MOTOR EARTHING
The iSOLAR M220HR motor cable has an earth lead which MUST be connected to
the Earth (ground circuit) of the V3 controller. If operating or testing the pump,
ensure the motor is well earthed to prevent a lethal shock hazard
If unsure, increasing the
pipe size by one size will
result in a substantial
reduction to the pipe
friction losses.
