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8
Commissioning and Preventive
Maintenance
Raychem-IM-H57548-HWATsystem-EN 16/08
Pentair Thermal Management requires a series of
commissioning tests be performed on the HWAT
System. These tests are also recommended at regu-
lar intervals for preventive maintenance. Results
must be recorded and maintained for the life of the
system, utilizing the “Installation and Inspection
Record” (refer to Section 11). Submit this manual
with initial commissioning test results to the owner.
Ensure that your water heater and mixing valve
temperature are set at your desired pipe maintain
temperature.
Important: Exceeding185°F (85°C) for HWAT-R2
will decrease the power output of the heating cables
over time.
8.1
Tests
A brief description of each test is found below.
Detailed test procedures are found in Section 9.
Visual inspection
Visually inspect the pipe, insulation, and connec-
tions to the heating cable for physical damage.
Check that no moisture is present, electrical con-
nections are tight and grounded, insulation is dry
and sealed, and control and monitoring systems
are operational and properly set. Damaged heating
cable must be replaced. Once the heating cable is
installed any repairs to pipes should be done very
carefully. The heater must be shielded from exces-
sive heat. Temperatures greater than 185°F will
permanently damage the affected section of heater.
Damage due to excessive external heat may or may
not effect the operation of the entire circuit. A torch
must not be used on the pipe, pipe hangers, or riser
clamps after the heating cable has been installed on
the pipe because this can cause permanent dam-
age to the heating cable (even if it does not appear
to be burned). Use a saw, not a torch, to cut riser
clamps. If use of a torch is unavoidable, cut the
fiberglass tape that holds the HWAT cable to the
pipe on either side of the area to be heated, and pull
the cable away from the pipe. Make sure you do not
cut the HWAT cable. Shield the cable from the flame.
8
Commissioning and Preventive
Maintenance
