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Document 520/001 Rev 2.2 Dec 2013  

Page 10 of 10

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ProH2O Water Leak Detection Application Guide

Frequently Asked Questions

7. How much water is required to trigger an alarm?

The amount of water required to trigger an alarm varies depending on which ProH2O controller the sensor cable 
is  connected  to.  Please  refer  to  the  ProH2O  Module  documentation  (Document  No.  550/001)  or  ProH2O 
Professional  documentation  (Document  500/001)  for  more  information.  It  is  worth  noting  that  the  ProH2O 
system  has  the  ability  to  detect  very  small  amounts  of  water  or  even  a  saturated  environment  (R.H.  >98%) 
however  this  would  increase  the  frequency  of  alarms  for  situations  which  pose  no  serious  problem.  The 
sensitivity of all ProH2O controllers have been set to provide an optimum level of protection against leaks which 
are a signficant problem and have the potential to cause major damage.

Summary of Contents for ProH2O

Page 1: ...sdiction It is important at all times to keep the detection cable clean and free from dust debris and other contaminants that may soil the cable especially during installation Ensure any major constru...

Page 2: ...ks Air conditioning systems HVAC Early warning of leaks from HVAC pipes drip pans and other fittings High value property e g Historical Period buildings libraries museums Detect water leaks where a sm...

Page 3: ...l characteristics of the cable and signal an alarm or other action The sensor cable is available in pre terminated lengths for simple assembley and extension Non sensing pre terminated lengths are als...

Page 4: ...below The required cable length can be approximately calculated using the following formula Floor area m2 10 Minimum Cable Length m Figure 1 shows the layout of ProH2O Sensor Cable when protecting an...

Page 5: ...tact between the pipe and detection cable A maximum spacing of 150mm 6 is recommended between cable ties when the detection cable is attached to a pipe Adding lagging around the pipe over the detectio...

Page 6: ...roof space where there is a possibility of leaks going unnoticed for extended periods Typical examples include header tanks or expansion tanks in the loft of a house or in the roof space of an office...

Page 7: ...r cable can be laid around air conditioning units and the associated drip trays to provide an early warning of a malfunction or damage to the connecting equipment It is important to ensure the sensor...

Page 8: ...ntact with the water sensitive cores within the cable Figure 5 below shows the recommended mounting clips used to secure the sensor cable The clips shown hold the cable to the floor without any materi...

Page 9: ...to page 4 for examples 3 How can I check the integrity of the cable Each ProH2O System continuously monitors the cable for a fault anywhere along its length and emits a trouble signal if a fault occu...

Page 10: ...e is connected to Please refer to the ProH2O Module documentation Document No 550 001 or ProH2O Professional documentation Document 500 001 for more information It is worth noting that the ProH2O syst...

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