HTP EL-399NVWH - Manual (Page 18)

18
LP- 346 REV. 3.20.14
5. Thread relief valve into outlet combination fitting using pipe dope.
6. Thread temperature and pressure gauge into outlet combination fitting using pipe dope.
7. Connect red wire from flow switch to heater wire harness.
8. When installation is complete, power up the heater and program unit set point. *Please note that these illustrations are meant to
show system piping concept only. The installer is responsible for all equipment and detailing required by local codes.
G. SCALDING
When raising tank temperature, you increase the risk of scalding. Please use a water
tempering or mixing valve and extreme caution when raising tank temperature to
lessen the chance of scalds. Consult codes for conformance.
This water heater can deliver scalding water at any faucet in the system. Be careful
whenever using hot water to avoid scalding injury. Certain appliances such as dishwashers
and automatic clothes washers may require increased water temperature. By setting the
thermostat on this water heater to obtain the increased water temperature required by
these appliances, you may create the potential for scald injury.
To protect against injury, you should install a mixing valve in the water system. This valve will reduce point of discharge temperature by
mixing cold and hot water in branch supply lines. Such valves are available from your local plumbing supplier.
The following chart details the relationship of water temperature and time with regard to scald injury and may be used as a guide in
determining the safest water temperature for your applications.
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 4