NELSON GA-1591, Heat Trace Silicone Tank Heating Panel Installation guide

Brand: NELSON

Model: GA-1591, Heat Trace Silicone Tank Heating Panel

Type: Installation guide

NELSON GA-1591, Heat Trace Silicone Tank Heating Panel is constructed with high temperature resistance elements, vulcanized between two thin layers of fiberglass reinforced silicone rubber. The panel is protected by a rugged corrosion resistant, stainless steel ground shield. This unique construction provides a rugged water and chemical resistance with flexibility down to -57°C (-70°F). This flexible panel is attached to the tank using aluminum foil tape, proving a low cost, simple installation. The panel can be used for tank heating and is resistant to water and chemicals. It is easy to install using aluminum foil tape.

NELSON

™

HEAT TRACING SYSTEMS

INSTALLATION

TANK HEATING PANELS

INSTRUCTIONS

P.O. BOX 726  TULSA, OK 74101  TEL 918-627-5530  FAX 918-641-7336  www.nelsonheaters.com

GA-1591 Rev. 3

Sheet 1 of 4

September 2005

GENERAL

Nelson Heat Tracing System's VH Series Silicone Tank Heating Panels are constructed with high

temperature resistance elements, vulcanized between two thin layers of fiberglass reinforced silicone rubber.

The panel is protected by a rugged corrosion resistant, stainless steel ground shield. This unique construction

provides a rugged water and chemical resistance with flexibility down to -57°C (-70°F). This flexible panel is

attached to the tank using aluminum foil tape, proving a low cost, simple installation.

A. Receiving Inspection

1. Inspect each unit upon receipt

2. Visually inspect for physical damage

3. Megohm insulation test with 500V meager between power wires and ground

B. Panel Location

1. Locate units as low as practical on the tank. Preferably.

2. Locate power connection brackets to facilitate routing of flexible conduit between panels

3. Locate panels a minimum of 305mm (12") apart.

C. Preparation

1. Remove dirt, loose scale, and rust from tank surface where aluminum tape will be attached.

2. Install on smooth surface. DO NOT INSTALL OVER RIDGES, BUMPS, OR EDGES THAT COULD

RUB AGAINST THE PANEL AND CAUSE PRE-MATURE FAILURE.

D. Attachment

1. Hold panel in place, metal shield and bracket facing outward.

2. Apply aluminum foil tape (AT-50) to the edge of panel, extending it 203 - 356mm (8-14") beyond the

panel edges.

3. Stretch panel smoothly across tank wall and tape the opposite edge, again extending 203 - 356mm (8-

14") beyond the panel edges.

4. Repeat taping for other edges of the panel.

5. Tape added strips across the panel, around the circumference at approximately 203mm (8") spacing.

Extend the tape 203 - 356mm (8-14") beyond the edges of the panel.

6. Panel may be pre-formed to put a permanent set in the stainless shield on the panel. This will allow the

panel to be easily held in place on small diameter tanks.

7. If it becomes necessary to band the panel to the tank, use fiberglass tape (GT-6 or GT-60). Put two

wraps of tape around the tank circumference at 305mm (12") intervals.

8. After installation, meager panel again between the power wiring and the ground. Insulation resistance

should be at least 50 megohm with a 500V meager.

E. Electrical Connection

1. 13mm (0.5") conduit nipple, 76mm (3") long exist panel wiring through tank thermal insulation.

2. Electrical connection fittings are connected with flexible, watertight conduit. DO NOT CONNECT RIGID

CONDUIT DIRECTLY TO ANY OF THE HEATER PANEL'S ELECTRICAL CONNECTION FITTINGS.

NELSON

™

HEAT TRACING SYSTEMS

INSTALLATION

TANK HEATING PANELS

INSTRUCTIONS

P.O. BOX 726  TULSA, OK 74101  TEL 918-627-5530  FAX 918-641-7336  www.nelsonheaters.com

GA-1591 Rev. 3

Sheet 2 of 4

September 2005

F. Thermostat Bulb Location & Mounting

1. Locate the primary thermostats sensing bulb. As low as possible on the tank, as far away from heating

panel as practical. Secure to vessel wall with aluminum tape.

2. Install the hi-temperature cut-out sensing bulb directly on the heater panel secure bulb to heating panel

with aluminum foil tape. Hi-temp sensing bulb must be located on the highest mounted heating panel

on the vessel. Locate hi-temp sensing bulb 152mm (6”) from the highest edge and centered. See

Figure 1 below.

HI-TEMP

CUT-OUT

T-STAT

Heatin

Panel

Sensing Bulb

152mm (6")

Figure 1

G. Performance and Rating Data

Tank Heater Size (inches) Watts @100°F Voltage VAC Load Amps

VH1-500 12 x 22 500 120 4.17

VH1-1000 29 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

Note: For 208V - multiply VH2 wattage by 0.75

H. Heater Specifications

Maximum operating temperature: 260°C (500°F)

Maximum temperature (UL recognition): 220°C (428°F)

Minimum ambient temperature: -57°C (-70°F)

Thickness: 15mm (.60”)

Lead Length: 305mm (12”)

Weight: 12 oz / 2 ft

NELSON

™

HEAT TRACING SYSTEMS

INSTALLATION

TANK HEATING PANELS

INSTRUCTIONS

P.O. BOX 726  TULSA, OK 74101  TEL 918-627-5530  FAX 918-641-7336  www.nelsonheaters.com

GA-1591 Rev. 3

Sheet 3 of 4

September 2005

Power Connection Bracket

203 - 357mm (8"-14") TYP

51mm (2") Aluminum Tape

(AT-50)

203mm (8") TYP

CAUTION

1. Check panels for proper voltages

2. Do not use on non-metallic tanks

3. Contact factory when designing for

temperature sensitive fluids.

4. Do not use with low temperature

insulation (rated below 188°C

(370°F) directly over heater panels.

Note: Low temperature insulation

may be used everywhere except

directly over the heater panels.

WARNING:

Heater panels must be used with

a hi-temp cut-out thermostat.

Figure 2

Mounting Detail

from power suppy

Drain at low point of conduit system

90° Condulet

Condulet

FLEX NOT TO EXCEDE NEC

RECOMMENDED LENGTH

Thermostat Bulb

(mount on tank wall)

CONTROL

CONDUIT MUST BE INSTALLED PER NEC

*Interconnecting Conduit

(as required)

*Nipple

*Wire Nuts

Gasket

Cover Plate Screws

Cover Plate

Tank Heating Panel Power

Connection Bracket

Tank Heating Panel

Tank Insulation

Flex Conduit

AND LOCAL CODES

Tank

to other panels

*Conduit Fitting

RIGID CONDUIT

T-STAT

HI-TEMP

CUT-OUT

T-STAT

13 x 76mm (.5 x 3")

Hi-Temp Thermostat Bulb

(mount on heater panel surface)

*ITEMS SUPPLIED BY CUSTOMER

Figure 3

Conduit Routing Detail

NELSON

™

HEAT TRACING SYSTEMS

INSTALLATION

TANK HEATING PANELS

INSTRUCTIONS

P.O. BOX 726  TULSA, OK 74101  TEL 918-627-5530  FAX 918-641-7336  www.nelsonheaters.com

GA-1591 Rev. 3

Sheet 4 of 4

September 2005

1st HEATER PANEL

IN CIRCUIT

2nd HEATER PANEL

IN CIRCUIT

LAST HEATER PANEL

IN CIRCUIT

High Limit Thermostat

Dual Pole Thermostat

(max. rating 277V, 30A)

Thermostat Bulb

(mount in tank wall using aluminum tape)

High Limit Thermostat

(set at 230°C (446°F)

305mm (12") Cold Lead

(attached to panel)

Optional "HC" Series** Contactor

*ITEMS SUPPLIED BY CUSTOMER

to line side of

control thermostat

to load side of high

limit thermostat

*Conduit Fitting

Single Pole Thermostat

(max. rating 480V, 22A)

**Contactor Cat. No.

120V HC-xxx

208 - 240V HC-xxx-240

Figure 4

Wiring Diagram

Notes:

1. Unless noted otherwise, all power supply cable, conduit and fittings to be supplied by customer.

2. Thermostats and contactors are available from Nelson Heat Tracing Systems, but must be ordered

separately.

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.

NELSON GA-1591, Heat Trace Silicone Tank Heating Panel Installation guide

NELSON GA-1591, Heat Trace Silicone Tank Heating Panel Installation guide

NELSON GA-1591, Heat Trace Silicone Tank Heating Panel Installation guide

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