Vlog

Hot water systems are made to last anywhere from 6-15 years. Over this time, safety regulations have changed in both the plumbing and gas worlds.

There are a lot more items we need to check to make sure installations are compliant.

To most, in this picture, everything looks fine… but there are multiple non-compliance issues.

Before (Non Compliant Existing Hot Water System Installation)

We were recently requested to replace this unit and in doing so we needed to bring this install up to standard.

For the new unit we needed to install a heat trap, a tempering valve, an expansion control valve, 2 drains and a soak pit under each drain. We also needed to add a gas shut off valve.

For some units, there will be even more that needs to be done, like the addition of a concrete slab under the unit…

After (Compliant Installation)

This is what the pipework looks like after all the new standards have been applied to the new install.

 

Continue reading to find out what each one of these items does to protect your system and house…

Heat Traps

Heat traps are valves and or loops of pipe installed on the cold water inlet and hot water outlet pipes on hot water systems. They allow cold water to flow into the system, but prevent hot water from flowing out of the system back up the cold water pipes.

Read the technical note from the Plumbers Licensing Board (Heat Traps – p6)

Tempering Valves

A tempering valve ensures your hot water is at a safe temperature for personal hygiene use. A tempering valve has a temperature sensitive element which adjusts the level of cold water depending on the temperature of the water from the hot water system.

Regulations on safe water services are Australia-wide and fall under the Plumbing Code of Australia (PCA). The water in a hot water storage system must be kept at a minimum of 60°C (AS3500.4.2 Clause 1.6) to prevent bacteria. The maximum temperature water can leave the tap is 50°C (AS3498) and a maximum of 45°C in institutions such as early childhood centres, schools, and nursing homes or other facilities where the young, sick, aged or disabled could be using hot water.

A tempering valve or other tempering device reduces your hot water temperature at the tap, to allow you to meet both Australian standards.

Tempering Valves should be replaced every 4 years. 

Expansion Control Valves

Expansion Control Valves limit the maximum pressure in a pressurised, unvented water heater system by relieving excess pressure to the drain line.

Expansion Control Valves should only be installed on the cold or inlet installation on a water heater as the valve is primarily intended to cope with the excess pressure generated during a normal heating cycle.

Expansion Control Valves are safety valves and should be replaced every 4 years.

Temperature/Pressure Relief Valves

Temperature & Pressure Relief Valves are safety controls which ensure that the temperature of the water in a pressurised unvented water heater cannot exceed 99° C in the event that the normal thermostatic controls fail.

These valves may be used to guard against overtemperature and over-pressure hazards wherever water is stored in unvented containers. This is a requirement of Australian Standard AS 3500-4.

Temperature & Pressure relief valves are safety valves and should be replaced every 4 years.

Gas Shut Off Valves (not shown above)

Allows the manual isolation of the gas flow in natural gas and LPG systems. In the open position (gas is flowing) the handle (lever) will be parallel with the pipe, when it is closed (gas not flowing) the handle (lever) will be perpendicular to the pipe.

Soak Pits

Required so that the release of steam or hot water is controlled and does not cause a nuisance, is readily noticeable and will not cause damage to buildings or injury to persons.

Some units will require two pits to be installed and they should have gravel placed in the bottom. One pit for the Expansion Valve and one for the Temperature & Pressure Relief Valve.

Gas Pressure Tests

As replacing a hot water system involves touching the gas lines, a gas pressure test will need to be carried out to ensure that the system and pipework is gas-tight.

After your system has been replaced

Your hot water system should be serviced every two years to make sure it continues working efficiently.
Read our post about anodes to learn more about how a storage hot water system works.

If you have any questions, please feel free to give Plumbdog Perth a call – 1300 884 146

• Water Leaks are one of the most common reasons for high water bills
• You can identify whether you have a potential leak, we’ll show you how
• Check out more of our VLOGs here!

Water leakage is one of the most common reasons behind your high water bills and if the leak is left undetected for a long time, it can dig an unwanted hole in your pocket.

In this video, our Plumbdog Richard shares some simple tips and tricks to discover unknown leaks on your property and reduce the unnecessary wastage of money. He also explains possible ways which you can detect the problem by yourself.

1. Find You Water Meter
   The first step is to spot the water meter. Before seeking assistance from a professional, you can try to locate the meter yourself, as it is usually placed in the garden towards the boundary, close to the street.
   If you are unable to figure the position, then the chances are that it might be buried under overgrown garden land. Such a situation demands an expert’s guidance, for which you can click the link we have mentioned in our blog.
2. Turn Off Water Using Devices
   The next course of action is to turn off all the devices that involve direct water use. Check for usual items like washing machines, water purifiers and filter systems, taps and adaptive aircons.
3. Test With The Water Meter
   Now finally, we test the leakage through our water meter. Now we need to observe the movement of our dial for over 5 minutes. If there is no movement then you can be comfortable knowing that there isn’t a leak. A movement in the reading is an indication of a possible leak.

What to do if you notice a movement?

In such a case, the ideal thing to do to give us a whistle and book yourself a professional plumber. If you want to try and detect the leak yourself first, then a good place to start looking is usually around the water meter itself.

If you are able to identify the water leak it will help save some time and money and you can call us to fix up the problem. Of course if you are unable to detect the leak yourself, our team of trained and experienced Plumbdogs will sniff out the problem for you.

Our Services

If you are facing any plumbing issues at your home or office, give us a whistle! We pride ourselves in being the experts that our customers and colleagues in the industry turn to for maintenance plumbing services that also provide value for your money. Our team of highly professional Plumbdogs hold years of experience in solving all kinds of plumbing related issues like fixing broken or twisted pipes, unblocking drains, leak detection, and hot water system installations, maintenance and repairs. Not only are we skilled and experienced, we have all the gear and every idea to be at your service.

• Tree Roots – The most common offenders of blocked drain problems. This property had tree root ingress in multiple locations.  
• CCTV Footage – Check out our CCTV footage from the job
• Plumbdog has All The Gear and Every Idea. Check out more of our VLOGS here!

In this video one of our top dogs Rich takes us to a property in Langford where this property had blocked drains. Using CCTV for inspection and high pressure water jetter combined, he has been able to clear the roots away.

Tree roots tend to grow in close proximity to moisture; as a result, they get attracted to the water pipes, causing massive damage. Rich is an experienced Plumbdog and knows how to sniff out problems when it comes to fixing blocked drains.

The Video

In today’s video, we see how Rich clears roots as far along as 11 and 14 meters from the inspection point creating blocked drain problems in multiple locations. He gives us a close up look of the process and some CCTV video footage of the job at hand. It’s not something everyone gets to see so we hope you enjoy the video.

The Blocked Drain

An underground pipe has tree root ingress creating a blocked drain issue. The pipe is surrounded by thick tree roots, which have cracked open the pipe from multiple points. Tree roots are a common problem and if you have been following our videos, you’ll notice that no two jobs are the same.

Another complication discovered comes from a bad fitting from when the pipe changes from earthenware to PVC where it’s not aligned correctly and is not fitted properly. Upon further inspection, there are also multiple locations in joining areas where tree roots have penetrated through.

The Solution

With his expertise, Rich uses our locally custom made high water pressure jetter down the access point, which helps in rapidly unclogging the congestion. The combined high pressure water jetter and CCTV allows us to effectively remove the tree roots in multiple problem areas and inspect that the job is done right. 

In combination with the latest tools of the trade and experience, our obedient Plumbdogs are able to get the job done quickly and efficiently saving our customers time and money. This is why we say we have ‘all the gear and every idea’.

• It is important to test for gas leaks before installing a new Hot Water System. 
• Plumbdog has All The Gear and Every Idea. Check out more of our VLOGs here!

In today’s video our obedient Plumbdog Rich is on a mission to install a new hot water system on one of the properties in West Australia. Installing a hot water system isn’t as simple as pulling out the old system, putting in the new and leaving it as that. In the video, Rich has tested for a gas leak and the test has failed.

In his first attempt, Richard checks for a gas leak before installing the new Hot water system. It is a safe thing to do as it saves the plumber unnecessary work if he detects a gas leak after the installation is complete and helps to know if the gas leak is a result of the new works completed or whether there was an existing problem. It is up to the gas fitter to ensure that there are no gas leaks when they replace an appliance. Our Plumbdogs are licensed gas plumbers/gas fitters.

The Gas Leak Test

To get started, he opens the gas meter and joins the testing kit to it, and turns on the gas. The gas at this property has been capped off and once he gets removes the disk stopping the gas at the meter, he notices a full drop in the gas pressure. Alas, the investigation failed!

The next step is to determine the reason behind the failure.

Soon he figures out that the old water system is damaged due to corrosion and has fallen from the wall which is the most likely cause of the gas leak.

After installing the new hot water system, another leak test is conducted. He attaches the testing equipment to the gas meter and turns on the gas. As the gauge reads 2.4kpa, he slowly turns the gas off and analysis the result.

In this test, the gas pressure does not drop rapidly like it did previously before installing the new hot water system. Observing for for 5 minutes, if the pressure doesn’t drop we can be comfortable that there isn’t a gas leak.

If you’re getting a new hot water system installed at your property, make sure the plumber does an initial test. In the event that there is a leak after the new system is installed, you will know whether there was already a leak or whether a new problem has occurred after the new unit is installed.

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