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C. combustible materials, D. installations in the state of california, E. maintenance considerations – HTP HPW-50-6 User Manual

Page 5: F. hydrogen gas

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5

LP-374 REV. 3.25.14

Safety and energy conservation are factors to be considered when selecting the water
temperature setting via the water heater user interface. Water temperatures above
125

o

F can cause severe burns or death from scalding. Be sure to read and follow the

warnings outlined on the label pictured in Figure 1. This label is also located on the
water heater near the top of the tank.

Mixing valves for reducing point-of-use water temperature by mixing hot and cold water
in branch water lines are available. Contact a licensed plumber or the local plumbing
authority for further information.

NOTE: Households with small children, disabled, or elderly persons may require
a 120

o

F or lower thermostat setting to prevent

contact with “HOT” water.

C. COMBUSTIBLE MATERIALS

Gasoline, as well as other flammable materials and liquids (adhesives, solvents, etc.),
and the vapors these items produce are extremely dangerous. DO NOT handle, use,
or store gasoline or other flammable or combustible materials anywhere near or in
the vicinity of the water heater. The arc drawn in the water heater controls can ignite
these vapors. Failure to follow these instructions can result in property damage,
serious personal injury, or death.

D. INSTALLATIONS IN THE STATE OF CALIFORNIA

California Law requires that residential water heaters must be braced, anchored, or
strapped to resist falling or horizontal displacement due to earthquake motions. For
residential water heaters up to 52 gallon capacity, a brochure with generic earthquake
bracing instructions can be obtained from: Office of the State Architect, 400 P Street,
Sacramento, CA 95814, or you may call 916-324-5315, or ask your water heater dealer
for more information.

Applicable local codes shall govern installation. For residential water heaters of a
capacity greater than 52 gallons, consult the local building jurisdiction for acceptable
bracing procedures.

California Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer, birth defects, or
other reproductive harm.

E. MAINTENANCE CONSIDERATIONS

To avoid electric shock, disconnect electrical supply before performing maintenance.

To avoid severe burns, allow water heater to cool before performing maintenance.

F. HYDROGEN GAS

Hydrogen gas can be produced in a hot water system that has not been used for a long period of time (generally two weeks or more).
HYDROGEN GAS IS EXTREMELY FLAMMABLE! To dissipate such gas and reduce the risk of injury, it is recommended that the
kitchen sink hot water faucet be opened for several minutes before using any electrical water heater connected to the hot water system.
If hydrogen is present, there will be an unusual sound, such as air escaping through the pipe as water begins to flow. Do not smoke or
use an open flame near the faucet while it is open. Failure to follow this warning could result in property damage, severe personal
injury, or death.

APPROXIMATE TIME / TEMPERATURE RELATIONSHIPS IN SCALDS

120

o

F

More than 5 minutes

125

o

F

1 ½ to 2 minutes

130

o

F

About 30 seconds

135

o

F

About 10 seconds

140

o

F

Less than 5 seconds

145

o

F

Less than 3 seconds

150

o

F

About 1 ½ seconds

155

o

F

About 1 second

Table 1

– Table Courtesy of Shriners Burn Institute

Figure 1