Tepid Water Heater for Emergency Fixtures

Do I need to install an insulation blanket?

No. Most new electric water heaters are highly efficient due to the "blown in" polyurethane foam insulation in modern tanks, compared to the fiberglass blanket style used previously. Thus, adding an insulation blanket to a new electric water heater might be ineffective and could potentially reduce efficiency.

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What is the average life of an electric water heater?

The life expectancy depends largely on the quality and type of the storage tank. A glass-lined electric water heater typically lasts about 10-12 years, while a cement-lined electric water heater has an average life expectancy of 23-26 years. Other factors such as pressure fluctuations, usage, water conditions, and environmental factors also affect longevity.

Is it OK to use softened water with my cement lined tank?

Yes, it is okay. A water softener system does not affect the longevity or operation of a cement-lined tank. While softened water can cause corrosion in glass-lined tanks due to the salt used, cement-lined tanks do not use sacrificial anodes and therefore are not affected by softened water.

What is a sacrificial anode and does a cement lined tank need one?

Sacrificial anodes are maintenance items used in water heaters with steel tanks lined with materials like glass or epoxy. They help delay corrosion by attracting corrosive elements to dissolve themselves first. Cement-lined tanks do not require sacrificial anodes due to their thick, uniform cement lining which provides complete protection against corrosion.

What is the max water temperature setting?

Hubbell cement-lined tanks can store water up to 194°F. However, achieving this temperature may require optional control accessories. It is important to consider safety concerns when storing water at elevated temperatures and consult the factory for guidance.

Is there a cold water dip tube in the Hubbell tank?

Hubbell cement-lined tanks have an integrated cold water diffuser in the cold water connection, which introduces cold water in a controlled manner to prevent premature mixing with hot water. This design eliminates the need for a long dip tube extending from the top to the bottom of the tank.

How does my water heater ship?

Hubbell water heaters are shipped via common carrier and are classified under National Motor Freight Classification class 100. Storage-type heaters are palletized and wood crated, while tankless heaters ship as class 77.5. To minimize transportation costs, Hubbell typically ships on their account and adds the freight cost to the invoice.

Why is Hydrastone Cement a better choice over glass lining?

Cement linings provide 100% coverage and are significantly thicker (0.5") compared to glass linings (0.005"). This comprehensive coverage eliminates the need for a sacrificial anode, making cement-lined tanks more durable and longer-lasting than glass-lined tanks.

What is ANSI Z358.1-2009?

This ANSI standard defines tepid water as water ranging between 60°-100°F, suitable for emergency eyewash and shower equipment to promote a minimum 15-minute irrigation period. Using tepid water is recommended to prevent worsening chemical injuries during first aid treatments.

What temperature is tepid water?

According to the ANSI/ISEA Z358.1-2009 standard, tepid water is defined as water within 60°-100°F to facilitate a 15-minute flushing period for emergency purposes. This temperature range prevents chemical interaction with skin and eyes while avoiding hypothermic shock.

What if I want to supply tepid water to more than one safety shower?

To supply tepid water to multiple safety showers, the optimal system would place one 120-gallon tepid water heater for each shower. Alternatively, a central system with a large storage tank and integrated mixing valves may be used, though this requires careful design consideration.

Is Legionella a concern for my system?

Legionella bacteria thrive between 68°F and 113°F. The design of the Hubbell model EMV ensures that water is reheated to 170°F, minimizing the risk of Legionella in the recirculating loop. The system includes measures to periodically heat the water in the loop to 170°F to kill any Legionella bacteria present.

If I lose power, will I continue to get tepid water?

Yes. The advantage of the Hubbell model EMV storage tepid water heater is that it maintains a standby supply of hot water, ensuring tepid water delivery during power outages.

What is the annual operating cost?

The annual operating cost, considering standby heat loss and semi-annual performance testing, is around $154, assuming $0.12 per kWHr, ambient temperature of 50°F, and incoming cold water supply at 40°F.

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Does the EMV have CSA approval for Canada?

The EMV water heater is approved to UL Standard 1453 and CSA C22.2#110. ETL is the third-party approval agency, ensuring compliance with UL and CSA standards, but not listing them directly.

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