| Nozzle sizes available | Maximum spacing between sprinkler heads | Nominal flow rate at 300kpa |
|---|---|---|
| 2.5mm | 3.5 metres | 6 lpm |
| 3.2mm | 3.5 metres | 9 lpm |
| 4.0mm | 4.0 metres | 14 lpm |
Maximum angle of sprinker installation is 35˚ off vertical for effective operation.
Recommended minimum operating pressure at pump is 500kpa.
Optimum operating pressure at each sprinkler head is 300kpa.
We recommend using our Flow Control Inserts to ensure optimum performance.
| Nozzle size | Max. number of sprinklers for 20mm copper |
Max. number of sprinklers for 25mm copper |
Max. number of sprinklers for 32mm copper |
Max. number of sprinklers for 40mm copper |
|---|---|---|---|---|
| 2.5mm | 5 | 10 | 17 | 26 |
| 3.2mm | 3 | 6 | 11 | 15 |
| 4.0mm | 2 | 4 | 6 | 10 |
| Sprinklers | 25mm | 32mm | 40mm | 50mm |
|---|---|---|---|---|
| 2.5mm sprinkler | 10 | 15 | 25 | 35 |
| 3.2mm sprinkler | 6 | 10 | 15 | 20 |
| 4.0mm sprinkler | 4 | 6 | 10 | 15 |
| Copper tube | Vertical pipe | Horizontal pipe |
|---|---|---|
| 15mm & 20mm | 1.5 metres | 1.0 metres |
| 25mm | 2.0 metres | 1.5 metres |
| 32mm & 40mm | 2.5 metres | 1.8 metres |
| 50mm | 3.0 metres | 2.2 metres |
| PVC Pipe | Vertical Pipe | Horizontal Pipe |
|---|---|---|
| 20mm | 1.4 metres | 0.70 metres |
| 25mm | 1.5 metres | 0.75 metres |
| 32mm | 1.7 metres | 0.85 metres |
| 40mm | 1.8 metres | 0.90 metres |
| 50mm | 2.1 metres | 1.05 metres |
Carefully measure around the outside of your roof line.
Measure the length of each sprinkler run off your plan, find the measurement in the table below to determine the number
of sprinklers.
Divide the length of your sprinkler run by the number of sprinklers shown in the table, this gives you the centre distance
between the sprinkler’s, divide centre distance measurement in half to determine the distance in to the sprinkler’s at each
end of the sprinkler run (see example below)
Sprinkler Spacing Table for 2.5mm & 3.2mm nozzle
Once you have worked out how many sprinklers you will be installing, multiply the number of sprinklers by the nominal
flow rate, depending on the nozzle size (see chart on page 2).
Example: House requires 28 sprinklers with 2.5mm nozzle @ 6 LPM each; 28 x 6 = 168 say 170 LPM.
Find the 170 LPM point on the bottom of the table, draw a line up to where it meets the curve, then draw a line across to
check the head in metres. For a single storey home where the pump, tank and house are on the same level, ensure the
pump delivers the required flow rate at or above 50mt.
As shown on the below examples, the Example Curve B pump delivers the required flow at approx. 37mt head which is too
low. The Example Curve B pump delivers the required flow of approx. 65mt, so the Example Curve A is the pump to select
in this case.
Note: Additional pump performance would be required for two storey houses. If the pump is located on a lower level (down hill) or a long distance from the house, check with Platypus Fire PL or your pump supplier for further advice.
Air cooled diesel engine run times
| Fuel tank capacity in liters | Run time at 3000rpm | Run time at 3600rpm | Warranty term* | |
|---|---|---|---|---|
| Yanmar L48 | 2.4 | 2.60 Hours | 2.3 Hours | 2 years |
| Yanmar L70 | 3.3 | 2.50 Hours | 2.2 Hours | 2 years |
| Yanmar L100 | 5.4 | 2.80 Hours | 2.5 Hours | 2 years |
| Kohler KD350 | 4.3 | 3.20 Hours | 2.9 Hours | 3 years |
| Hatz 1D81 | 10.0 | 3.25 Hours | n/a | 2 years |
Air cooled petrol engine run times
| Fuel tank capacity in liters | Run time at 3000rpm | Run time at 3600rpm | Warranty term* | |
|---|---|---|---|---|
| Honda GX160 | 3.1 | – | 2.2 Hours | 3 years |
| Honda GX200 | 3.1 | – | 1.8 Hours | 3 years |
| Kohler CH270 | 4.0 | – | – | 3 years |
| Robin EX21 | 3.6 | 3.25 Hours | -s | 3 years |
* Check specific terms with supplier at time of purchase.
Engine run times using Platypus Controller cycle times (Diesel engines only)
| 5mins on / 10mins off | 10mins on / 10mins off | 10mins on / 5mins off | |
|---|---|---|---|
| Yanmar L48 | 7.30 Hours | 4.9 Hours | 3.6 Hours |
| Yanmar L70 | 7.00 Hours | 4.7 Hours | 3.5 Hours |
| Yanmar L100 | 7.90 Hours | 5.3 Hours | 3.9 Hours |
| Kohler KD350 | 9.10 Hours | 6.1 Hours | 4.5 Hours |
| Hatz 1D81 | 9.75 Hours | 6.5 Hours | 4.8 Hours |
Run / Pause cycle times are set by the user / installer up to a maximum of 60 minutes.
Recommended max ambient air temp
(Sprinklers on roof only)
STEP 1 – For a “Roof Only System”, mark sprinkler positions at each of the points where the hip meets a ridgeline.
STEP 2 – Measure the lengths of the hips and use the tables on our ‘How to calculate the number of sprinklers’ info sheet to determine the number and position of the sprinklers.
STEP 3 – Measure the length of the ridgeline between the sprinklers you marked in Step 1 and use the table again to calculate the number and position of the sprinklers.
(Sprinklers on roof and fascia)
STEP 1 – For a “Roof & Fascia System”, mark sprinkler positions at each of the points where a hip meets a ridge.
STEP 2 – draw a dotted line 3.5mt from the fascia line. Measure the lengths of the hips from the sprinkler marked in step 1 to the dotted line, and use the tables in our ‘How to calculate the number of sprinklers’ info page to determine the number and position of the sprinklers.
STEP 3 – Measure the length of the ridgeline between the sprinklers you marked in Step 1 and use the table again to calculate the number and position of the sprinklers.
