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Figure 5. Scald Warning.
Table 7. Approximate scald time/temperatures.
APPROXIMATE TIME/TEMPERATURE
RELATIONSHIPS IN SCALDS
120°F (49C)
More than 5 minutes
125°F (52C)
1½ to 2 minutes
130°F (54C)
About 30 seconds
135°F (57C)
About 10 seconds
140°F (60C)
Less than 5 seconds
145°F (63C)
Less than 3 seconds
150°F (66C)
About 1½ seconds
155°F (68C)
About 1 second
Condensate
The TGHE series water heaters are factory equipped with a condensate trap and drain line. All
condensate must drain and be disposed of per local codes. Use only vent that is approved venting; do
not use PVC, CPVC, ABS, or galvanized material to vent this appliance.
If the condensate drain gets blocked, an error code will display on the controller. If this occurs, the
condensate drain must be cleaned. The condensate trap will automatically prime during operation of the
unit as condensate forms. Condensate draining from the unit indicates that the trap is full and that there
is no blockage in the condensate drain.
Use only PVC or CPVC pipe for the condensate drain line. The drain pipe, along its entire length, must
be at least the same diameter as the drain line (1/2” NPT). The drain pipe must be as short as possible
and have a downward pitch. The end of the drain pipe must be open to the atmosphere. The end must
not be underwater or other substances. Do not connect the drain pipe directly to the rain sewer. Do not
connect the condensate drain line with an air conditioning evaporator coil drain.
To minimize freezing of the condensate, run the condensate drain line through an interior wall or between
insulation and an interior wall.
NOTICE
Do not plug or cap the integrated condensate line. Without proper drainage or disposal, condensate
will damage the water heater.