Circulating Pump; Insulation Blankets; Temperature-Pressure Relief Valve - Lochinvar 100 Series Instruction Manual

Products of this sort should not be stored near the heater. Also, air
which is brought in contact with the water heater should not contain
any of these chemicals. If necessary, uncontaminated air should be
obtained from remote or outside sources.

CIRCULATING PUMP

Field installed circulating pumps should be of all bronze construction.

INSULATION BLANKETS

Insulation blankets are available to the general public for external
use on electric water heaters but are not necessary with this product.
The purpose of an insulation blanket is to reduce the standby heat
loss encountered with storage tank heaters. Your water heater meets
or exceeds the EPACT and ASHRAE/IES 90.1 standards with respect
to insulation and standby loss requirements, making an insulation
blanket unnecessary.
Should you choose to apply an insulation blanket to this heater,
you should follow these instructions below. Failure to follow these
instructions can result in fire, serious personal injury, or death.
• Do not cover the temperature and pressure relief (T & P) valve
with an insulation blanket.
• Do not cover the instruction manual. Keep it on the side of the
water heater or nearby for future reference.
• Do obtain new warning and instruction labels for placement on
the blanket directly over the existing labels.

TEMPERATURE-PRESSURE RELIEF VALVE

This water heater is provided with a properly rated/sized and certified
combination temperature - pressure relief valve by the manufacturer.
The valve is certified by a nationally recognized testing laboratory
that maintains periodic inspection of production of listed equipment
of materials as meeting the requirements for Relief Valves for Hot Water
Supply Systems, ANSI Z21.22 • CSA 4.4, and the code requirements of
ASME.
If replaced, the new valve must meet the requirements of local codes,
but not less than a combination temperature and pressure relief
valve rated/sized and certified as indicated in the above paragraph.
The new valve must be marked with a maximum set pressure not to
exceed the marked hydrostatic working pressure of the water heater
(150 psi = 1,035 kPa) and a discharge capacity not less than the
Explosion Hazard
Temperature-Pressure Relief Valve
must comply with ANSI Z21.22-
CSA 4.4 and ASME code.
Properly sized temperature-
pressure relief valve must be
installed in opening provided.
Can result in overheating and
excessive tank pressure.
Can cause serious injury or death.
water heater Btu/hr or kW input rate as shown on the water heater's
model rating plate.
For safe operation of the water heater, the temperature and pressure
relief valve must not be removed from its designated opening nor
plugged. The temperature-pressure relief valve must be installed
directly into the fitting of the water heater designed for the relief
valve. Install discharge piping so that any discharge will exit only
within 6 inches (15.2 cm) above, or external to the structure. Do not
pipe the discharge to a crawl space. Be certain that no contact is
made with any live electrical part. The discharge opening must not
be blocked or reduced in size under any circumstances. Excessive
length, over 30 feet (9.14 m), or use of more than four elbows can
cause restriction and reduce the discharge capacity of the valve.
No valve or other obstruction is to be placed between the relief valve
and the tank. Do not connect discharge piping directly to the drain
unless a 6" (15.2 cm) air gap is provided. To prevent bodily injury,
hazard to life, or property damage, the relief valve must be allowed
to discharge water in adequate quantities should circumstances
demand. If the discharge pipe is not connected to a drain or other
suitable means, the water flow may cause property damage.
Property Damage Hazard
● The temperature-pressure relief-valve discharge pipe
must terminate at an adequate drain.
The Discharge Pipe:
• Shall not be smaller in size than the outlet pipe size of the
valve, or have any reducing couplings or other restrictions.
• Shall not be plugged or blocked.
• Shall not be exposed to freezing temperatures.
• Shall be of material listed for hot water distribution.
• Shall be installed so as to allow complete drainage of both the
Temperature-Pressure Relief Valve and the discharge pipe.
• Must terminate a maximum of six inches above a floor drain
or external to the building. In cold climates, it is recommended
that the discharge pipe be terminated at an adequate drain
inside the building.
Shall not have any valve or other obstruction between the relief valve
and the drain.
Installing the Water Heater
Water temperature over 125°F (52°C)
can cause severe burns instantly
resulting in severe injury or death.
Children, the elderly and the
physically or mentally disabled are at
highest risk for scald injury.
Feel water before bathing or shower-
ing.
Temperature limiting devices such as
thermostatic point-of-use mixing
valves must be installed when
required by codes and to ensure safe
temperatures at fixtures.
Commercial Electric Water Heaters • 13