THERMAL MANAGEMENT SOLUTIONS
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4. Install heating cable end seals, splices, tees, and power connection.
• Install all end seals, splices, tees, and power connection prior to
plugging in.
• Follow the H900 kit installation instructions beginning on page 9.
• Use only weatherproof junction boxes approved for wet locations
when installing WinterGard H612 and H622 heating cable with the
H900 Power Connection Kit for roof and gutter applications.
5. Mark the installation.
A label indicating the presence of electric de-icing and snow-
melting equipment on the premises is included with this unit. The
label must be posted at the electrical outlet cover. The label must
be clearly visible.
6. check the installation.
• Prior to powering, check to be sure the heating cable is free of
mechanical damage (cuts, clamps, etc.).
• Visually check all power connections, end seals, splices, and tees
for proper installation.
• Using a megohmmeter, test each circuit according to the
instructions in the “Heating cable testing and maintenance”
section below.
HEATING cAbLE TESTING AND MAINTENANcE
Make sure that gutter and downspouts are free of leaves and other
debris prior to the winter season.
Pentair Thermal Management recommends that the insulation
resistance between the bus wires and the heating cable grounding
braid or metal pipe should be checked during installation using a
2500-Vdc megohmmeter. Minimum reading should be 1000 megohms,
regardless of circuit length.
Record the original values for each circuit. Take additional readings
during regularly scheduled maintenance and compare to the original
value. If the readings fall below 1000 megohms, inspect heating cables
and insulation for signs of damage.
If physical damage is found, the entire damaged section must be
removed and a new section of heating cable spliced in using only
approved WinterGard H910 splice kits. Do not repair the damaged
heating cable section.
If physical damage cannot be found, the complete circuit should be
removed and replaced with new WinterGard heating cable.
WARNING: Shock and Fire Hazard. Damaged heating cable or
components can cause electrical shock, arcing, and fire. Do
not attempt to energize damaged cable or components.
Replace them immediately using a new length of heating cable
and the appropriate WinterGard accessories.
ELEcTRIcAL pROTEcTION
voltage rating
H612
110–120 Vac
H622
208–240 Vac
Ground fault protection:
Pentair Thermal Management and national electrical codes require
ground-fault equipment protection on each heating cable branch
circuit. To reduce the risk of fire caused by damage or improper
installation, circuit breakers such as Square D QO-EPD and QOB-
EDPD or equivalent, with a 30-mA trip level, should be used.
Alternative designs providing comparable levels of ground-fault
protection may also be acceptable. For technical assistance, call
Pentair Thermal Management at (800) 545-6258.
Table 6. Maximum heating cable circuit length for roof and
gutter de-icing, downspouts and refrigeration
condensate drains
circuit
breaker
rating (A)
Maximum heater length
(ft) per circuit at start-up
temperature
Heating cable type
0°F
32°F
WinterGard Wet 120 v H612 in
downspout and refrigeration
condensate drains
15
100
125
20
125
165
30
150
200
WinterGard Wet 240 v
H622 in downspout and
refrigeration condensate drains
15
200
250
20
250
320
30
305
400
Note: Maximum circuit lengths are based on start-up load. Steady-state amps
per foot is dependent upon heating cable temperature.
Table 7. product data—WinterGard Wet H612 and H622 for roof and gutter de-icing only
H612
H622
Service voltage (V)
120
240
Thermal output at 32°F (W/ft) (in ice and snow)
8
8
Weight per 100 ft (lb)
9
9
Minimum installation temp. (°F)
0
0
Maximum exposure temp. (°F)
150
150
Exposure to chemicals
None
None
Environment
Use only in ordinary (nonhazardous) areas.
Use only in ordinary (nonhazardous) areas.
