Specification

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Troubleshooting
Troubleshooting
Gas Water Heaters
2”-2.5”
2”-2.5”
15°
.5”-.75”
.5”-.75”
Threaded Fitting
Copper Casing
Steel Casing
Steel Casing
Threaded Fitting
Copper Casing
2”-2.5”
2”-2.5”
15°
.5”-.75”
.5”-.75”
Threaded Fitting
Copper Casing
Steel Casing
Steel Casing
Threaded Fitting
Copper Casing
• If relocation of the thermocouple is
unsuccessful, replacement of the thermocouple or
thermocouple assembly may be necessary.
NOTE: Only copper thermocouples should be used. In
addition, the length of the thermocouple tip can vary.
Thermocouples with a 2
1
⁄2" tip should be used.
NOTE: The thermocouple should be screwed only
finger tight plus one turn into the TCA-1. Damage to the
TCA-1 will occur if the thermocouple is over tightened.
• Check hole depths in gas valve and TCA
adapter thermocouple fitting for proper fit of
the TCA adapter into the gas valve, and of the
thermocouple into the TCA. In both cases, the tip
of the mating male part must make firm and solid
contact with the center of the mating female part
when installed.
Figure 5: Unmodified Thermocouple
Figure 6: Modified Thermocouple