Hubbell Electric Heater Company EMV - Manual (Page 7)

SECTION II –
INSTALLATION
WARNING / CAUTION
DO NOT TURN ON THE ELECTRIC POWER SUPPLY to this equipment until heater is completely filled
with water and all air has been released. If the heater is NOT filled with water when the power is turned on,
the heating elements will burn out.
For protection against excessive pressures and temperatures, local codes require the installation of a
temperature-and-pressure (T&P) relief valve certified by a nationally recognized laboratory that maintains
periodic inspection of production of listed equipment of materials, as meeting the requirements for Relief
Valves and Automatic Gas Shutoff for Hot Water Supply Systems. ANSI Z21.22-1971. THE CUSTOMER IS
RESPONSIBLE TO PROTECT PROPERTY AND PERSONNEL FROM HARM WHEN THE VALVE
FUNCTIONS.
All water heaters have a risk of leakage at some unpredictable time. IT IS THE CUSTOMER'S
RESPONSIBILITY TO PROVIDE A CATCH PAN OR OTHER ADEQUATE MEANS, SO THAT THE
RESULTANT FLOW OF WATER WILL NOT DAMAGE PROPERTY.
WATER HEATER PLACEMENT
1. Place the heater on a solid foundation in a clean, dry location nearest to the point of most frequent
tepid water use
2. The water heater should be protected from freezing and waterlines insulated to reduce energy and
water waste.
3. Leave a minimum of 18” clearance for element withdrawal.
4. Do not install in an area where flammable liquids or combustible vapors are present, except when
installed with the explosion proof option.
PIPING INSTALLATION
NOTE: The most effective means for preventing deterioration from accelerated corrosion due to galvanic
and stray current is the installation of dielectric fittings/unions. The installation of these fittings is the
responsibility of the installing contractor.
1. Connect the cold water inlet and tepid water outlet to the appropriate connections as shown below;
refer to the drawing for location and sizes.
2. Install the combination temperature and pressure safety relief valve in the tapping provided. Note that this
is required by law for safety considerations.
Install into provided tapping Manual Release Lever
Temperature Probe
Outlet to floor drain
Temperature and Pressure Relief Valve
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