Nelson Heat Trace VH1, VH2 Application Information

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NELSON

SILICONE TANK HEATING PANEL INFORMATION

VH1

VH2

• Fiberglass-Reinforced Silicone
Rubber Insulation Jacket

• Stranded Steel Sheath

Conduit Entry (1/2” NPT)

Description:

SPECIFICATION/APPLICATION

Nelson Type VH Silicone Tank
Heating Panels are constructed with high
temperature resistance elements
vulcanized between two thin layers of

Principle of Operation:

The use of surface heating panels on
metallic tanks and vessels provides larger
amounts of heat in smaller areas than
when heating cables are used. The labor

Application:

Nelson's VH Heating Panels are
suitable for installation on metallic tanks
and vessels for freeze protection or
process temperature maintenance up to
175°F. Any number of heating panels
can be installed on a single tank and
connected in parallel or series to
minimize electrical distribution

fiberglass-reinforced silicone rubber and a
stainless steel sheath which provides
additional mechanical protection and a
ground path for hazardous area

to install heating panels is less than a
comparable heating cable installation. The
heating panels' high concentration of heat
allows for significant heat-up capacity to

requirements. For applications in which
the fluid may drop below the level of the
heating panel, a dual thermostat
arrangement is recommended. One
sensor is installed on the tank to provide
temperature control while the second
sensor is installed on the surface of the
highest mounted heating panel acting as

installations. The unique panel
construction provides a rugged, water and
chemical resistant sheath with good
flexibility down to -70° F.

be installed on the tank surface or for the
heat to be focused on a smaller area when
low fluid levels in the vessel require heat.

a hi-temperature cutout switch to protect
the heater from abnormal conditions.
The panels are easily attached with
suitable banding materials and must be
mounted below the minimum fluid level
on the vessel surface.

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NELSON

SILICONE TANK HEATING PANEL INFORMATION

Performance and Rating Data:

Tank

Heater

VH1-500 12 X 22 500 120 4.17

VH1-1000 18 X 28 1000 120 8.33

VH2-500 12 X 22 500 240 2.08
VH2-1000 18 X 28 1000 240 4.17
VH2-2000 24 X 42 2000 240 8.33

Heater Specifications:

Maximum operating temperature: 500°F

Maximum temperature (UL recognition): 428°F

Minimum ambient temperature: -70°F

Thickness: .060"

Lead length: 24"

Weight: 12 oz/ft2

Approvals: FM
Ordinary Locations

Hazardous (Classified) Locations

Class 1; Division 2; Groups A, B, C & D

Class 1; Zone 2

Nelson Heat Tracing Systems products are supplied with a limited warranty. Complete Terms and Conditions may be found on Nelson's website at

www.nelsonheaters.com.

SPECIFICATION/APPLICATION

Size

Inches

FOR 208 VOLTS MULTIPLY VH2 WATTAGE BY 0.75

Watts

@100°F

Voltage

Vac

Load

Amps

P.O. BOX 726 • TULSA, OKLAHOMA 74101 • 918-627-5530 • 918-641-7336 • www.nelsonheaters.com 313-SA-001
© 2007 Nelson Heat Tracing Systems March 2007