21 Londonderry Turnpike
Hooksett, NH 03106
Water heaters are an amazing appliance but unless the property owners maintain them including washing the internal
sensing probe and rinsing minerals out of the T&P safety valve the water heater can explode with force of dynamite.
|Water Heater Safety and the T&P Valve
No more need to flip the lever and risk being scolded. The alternate method provides automatic flow through cleaning. It Washes the sensing probe
and rinses out minerals and bacteria. There is no reason for a professional to risk the T & P being a dead leg in clients plumbing system harboring
bio-film and potentially legionella bacteria.
Most professional plumbers are not installing the T & P these days. It is installed by a factory worker. That means everyone believes that's the end of the story,
but it is just the beginning. Instead of the standard T & P specified ad supplied by the factory I highly recommend that professional plumbers and service men
take the initiative and insist on a much safer alternative method. Pull the standard T &P (cost $7.00) out and install the longer T & P in a Tee.
Water heaters are a fantastic appliance, unfortunately the best of them are a liability when mechanical things can malfunction (when minerals clog the inside
restricting the waterways) and when subjected to inappropriate human actions. (Tampering plugging and capping of the drain line for example). The property
owners are likely to turn a blind eye to maintenance and the T&P safety seldom gets the annual flow test expected according to instructions. Things go badly
when the minerals and treatments in drinking water are heated. This is when the safety valve gets clogged up and stuck shut for lack of flow. Also some
property owners will notice thermal expansion spewing out the safety and put a plug or cap. That's why Life Safety Code 101 which applies to schools day care
and multi-level housing requires additional safety measures.
CSA specifies an anti- tamper drain line connection which is listed under CSA 1.06us and is known as the Safe Plug Relief and anti-tamper drain line connector.
What is unknown is why the water heater manufacturers who serve on the CSA committee and know or should know of the CSA 1.06 US device approval fail to
make mention of it in installation operation and maintenance manuals. The minimum duties expected of a water heater manufacturer has not been met and the
availability of this safety feature remains unknown to the property owners.
It is time for the manufacturers to put ink to the paper and include information on the CSA 1.06us device. The best recommendations for dangerous
circumstances such as the connection of the drain line to the safety valve are found in Life Safety Code. To paraphrase the language, when it is possible that
inappropriate human action can circumvent a single safety device the owner shall provide additional safety measures accordingly.
21 Londonderry Turnpike,
Hooksett, NH 03106
Monday - Friday
8:00am to 4:00pm