BVF SRHC 18-36 User manual

BVF SRHC 18-36 HEATING CABLE
INSTALLATION MANUAL

BVF SRHC 18-36 installation manual
TABLE OF CONTENT
Important safety notice 3
1 GENERAL INFORMATION 3
1.1 Use of the manual 3
1.2 Safety guidelines 3
1.3 Remember to measure resistance 4
1.4 10 years extended warranty 4
2 BVF SRHC 18-36 4
2.1 BVF SRHC 18-36 specifications 4
3 INSTALLATION OF BVF SRHC 18-36 ON PIPES 5
3.1 Prepare for installation 5
3.2 Cut the cable to length 5
3.3 Position and attach heating cable to pipe 5
3.4 Install heating cable cold lead connection 6
3.5 Check the installation 6
3.6 Install thermal insulation 6
4 INSTALLATION OF BVF SRHC 18-36
ON ROOFS AND GUTTERS 7
4.1 Prepare the installation 7
4.2 Cut the cable to length 7
4.3 Position and attach the heating cable on roofs 7
4.4 Install heating cable cold lead connection 8
5 INSTALLATIONS OF THE CONNECTION SET
AND COLD LEAD 9
5.1 Structure of the BVF SRHC 18-36 heating cable 9
5.2 Installation of the cold lead with the connection set 10

BVF SRHC 18-36 installation manual
IMPORTANT SAFETY NOTICE
WARNING: Shock and fire hazard!
If the BVF SRHC 18-36 heating cable is damaged or not installed
properly, fire or shock hazard could occur resulting in serious personal
injuries or damage to property. You must carefully follow the warnings
and instructions contained in this manual.
Use controllers only designed for electric heat tracing systems.
It is important that this equipment is installed only by qualified
electricians who are familiar with the proper sizing, installation,
construction and operation of electric heat tracing systems and the hazards
involved. The installation must comply with all national and local
electrical codes. If you are unfamiliar with these requirements, contact an
electrician.
The BVF SRHC 18-36 heating cable is designed for defrosting purposes
only. Be sure that the installation surfaces are well prepared for
installation.
If the BVF SRHC 18-36 heating cable is damaged, it must be replaced.
Do not attempt to splice or repair any part of the system
1 GENERAL INFORMATION
1.1 Use of the Manual
This manual describes the BVF SRHC 18-36 heating cable —how to design
and install the system, connect to cold lead and equip the cable with connecting
set. It is important to thoroughly review this manual before installation.
For additional information contact to the distributor
1.2 Safety Guidelines
The safety and reliability of any electric heat tracing system depends on proper
design, installation, and testing. Incorrect installation or mishandling of the
product can cause damage to the heating cable, system components and
property, and can create a risk of fire or shock. The guidelines and instructions
contained in this guide are important. Follow them carefully to minimize these
risks and to ensure that the BVF SRHC 18-36 heating cable performs reliably.

BVF SRHC 18-36 installation manual
Pay special attention to the following notices:
Instructions marked Important
Safety warnings identified as WARNING
1.3 Remember to measure resistance
Important: measure the resistance two times during the installation
Remember to always measure, verify and record the actual resistance throughout
the installation process (out of the box, during and after installation)
1.4 10 years Extended Warranty
For a period of ten (10) years from the date of purchase warrants that the BVF
SRHC 18-36 heating cable is free from defects in material, design and
workmanship. The extended warranty is only valid if the warranty certificate has
been properly completed, and the installation is in accordance with the
installation instructions
2BVF SRHC 18-36
2.1 BVF SRHC 18-36 Specifications
Cable Construction: Twin conductor self regulating heating cable
Safety ranking: Certified for explosive environment
Rated Voltage: 230V
Output: 18W-36W/m +-10%
Minimum cable spacing: 35mm
Cable Diameter: 10,5 x 5,9 mm
Conductor Insulation: THP
Outer Insulation: THP
Max. Ambient Temp.: + 65°C
Cold lead and connection set: not included

BVF SRHC 18-36 installation manual
3INSTALLATION OF BVF SRHC 18-36 ON PIPES
3.1 Prepare for installation
Store the heating cable in a clean, dry place.
Complete piping pressure test.
The heating cable will have the heating cable type printed on the outer
jacket.
Walk the system and plan the routing of the heating cable on the pipe.
All welding, hydrostatic testing and painting of pipe should be completed
before heating cable installation.
The piping system shall be inspected to ensure that it is clean and has no
sharp or jagged edges that might damage the heating cable.
Installation of the heat tracing before completion of the piping system is
not recommended.
3.2 Cut the cable to length
Cut the heating cable to the length required. This can be done before or
after the cable is attached to the pipe.
Leave a minimum of 30 cm extra heating cable for connection to power.
For splice and tee connections, leave a minimum of 30cm for each section
of heating cable.
Heating cable can be cut to length without affecting its heat output.
Protect the heating cable ends from moisture or mechanical damage if
they will be left exposed before connection.
3.3 Position and attach heating cable to pipe
Be sure all piping to be traced is dry.
Install heating cable, using straight tracing, spiraling, or multiple tracing
according to the capacity need

BVF SRHC 18-36 installation manual
For straight tracing, install the heating cable on a lower half of the pipe;
for example, in the 4 o’clock or 8 o’clock position.
Be sure to install the additional heating cable required for valves, flanges,
etc.
When the design calls for spiraling, begin by suspending a loop every 3
meters
To determine the loop length, obtain the spiral factor
Grasp the loop in its center and wrap it around the pipe. Even out the
distance between spirals by sliding the wraps along the pipe. Use glass
tape to secure the center of the loop to the pipe. Secure the heating cable
flat to the pipe to obtain good contact.
Do not use vinyl electrical tape, duct tape, metal bands, or wire.
3.4 Install heating cable end seals, splices, tees and cold lead connection
Install all end seals, splices, and tees and power connection end, eventual
controller prior turning the system on.
3.5 Check the installation
Prior to installing thermal insulation, make sure the heating cable is free
of mechanical damage (from cuts, clamps, etc.) and thermal damage
Visually check all power connections, end seals, splices, and tees.
Using a megohm meter, test each circuit both before and after installing
the thermal insulation. The resistance should be measured between the
two conductors. Also, measure the resistance between the bus wires and
the heater grounding braid or metal pipe. Using a 2500Vdc megohm
meter minimum reading should be 20 megohms, regardless of length. If
you get a different reading, contact to the distributor.
3.6 Install thermal insulation
A reliable system depends on properly installed and weather-proofed
thermal insulation.
Ensure that type and thickness of the insulation are in accordance with
heating cable capacities, pipe materials and diameters
WARNING: The cables must be installed away from combustible
surfaces, such us wood. The minimum bending radius of each flexible heating
device is 1/2 inch.

BVF SRHC 18-36 installation manual
4INSTALLATION OF BVF SRHC 18-36 ON ROOFS AND
GUTTERS
Important:
In-line splices and tee splices should be avoided where possible.
Heating cable in downspouts should be looped [610 mm of heater per 300
mm of downspout] and should extend below the frost line if tied into a
drainage system.
Field-assembled end terminations should not be located in an area where
moisture is present. End terminations should not be located at the lowest
point of downspouts.
The circuit length for a given over current protection device shall not
exceed the maximum length specified by the manufacturer.
The maximum exposure temperature of all roof, gutter, and downspout
materials shall be verified, and a heater shall be selected that will not
exceed their temperature ratings.
4.1 Prepare the installation
Store the heating cable in a clean, dry place.
Carefully plan the routing of the heating cable for roof and gutter de-
icing.
Make certain gutters and downspouts are free of leaves and other debris.
The mounting surface shall be inspected for sharp edges where the
heating cable will be located (and removed as necessary).
A weatherproof power connection should be located and mounted in a
sheltered area
4.2 Cut the cable to length
Cut the heating cable to the length required. This can be done before or
after it is installed. Leave a minimum of 30 cm extra heating cable for
connection to power. For splice and tee connections leave a minimum of
30 cm for each section of heating cable. Heating cable can be cut to length
without affecting its heat output.
Protect the heating cable ends from moisture and mechanical damage if
they will be left exposed before connection.
4.3 Position and attach the heating cable on roofs

BVF SRHC 18-36 installation manual
Loop the heating cable on the overhang area of the roof. This is the part
that extends past the building wall. Extend the bottom of each heating
cable loop over the roof edge and, using a UV-resistant cable tie, connect
the bottom of each loop to the cable running in the gutter to ensure a
drainage channel off the roof and into the gutter and downspout. The
cable running in the gutter should remain against the bottom of the gutter.
Extend the top of each heating cable loop beyond where the wall joins the
roof.
Use roof clips to attach heating cable to the roof surface.
For flat roofs, the heating cable can be spaced as needed to create runoff
paths for melting ice and snow. Use single ended clips located at 1 meter
intervals to secure the cable to the roof. Roof clips may be attached to a
shake or shingle roof with nails or screws. Reseal the nail or screw holes
if necessary before installing heating cable in the clips. Roof clips may be
attached to a metal roof using screw, nail or adhesive.
A barrier (snow fence) can be placed on the roof above the heating cable.
This prevents damage to the cable and keeps the installation from coming
loose due to ice slides. If desired, the heating cable can be attached to the
barrier with UV-resistant cable ties, instead of using roof clips. Do not use
wire or other materials because they may damage the heating cable.
All penetrations made on the surface of any style of roof should be
moisture proofed by using sealing type fasteners. The installation of any
heating system should not affect the overall integrity of the roof or gutter.
The mounting hardware should be made of corrosion resistant material
and should not have sharp edges or burrs
In gutters and downspouts
Run heating cable along gutters and into downspouts, ending below the
freezing level. Permanent attachment of the cable to the gutter bottom is
not necessary. Loop the heating cable in downspouts if convenient, such
as when the downspout is not at the end of the run.
Use downspout hangers to protect the heating cable from fraying and
from damage from sharp edges and to provide strain relief. Use roof clips
to route heating cable into and out of the gutter in such a way as to
prevent abrasion to the cable. Protect all cable that protrudes past the
lower opening of the downspout.
4.4 Install heating cable end seals, splices, tees and cold lead connection

BVF SRHC 18-36 installation manual
Install all end seals, splices, tees, and power connection prior to plugging
in.
Use only weatherproof junction boxes approved for wet locations
Use only watertight construction or enclosure
When possible, all power connection boxes should be located in a
protected area (such as under eaves) and entry should be at the bottom of
the box. In all case, a drip loop should be provided.
WARNING: The cables must be installed away from combustible
surfaces, such us wood. The minimum bending radius of each flexible heating
device is 1/2 inch. Do not cross or overlap cable heating section. In all locations,
route and secure cable to avoid possible mechanical damage, such as from
ladders, etc. All actual lengths installed should be recorded. The installer should
provide as built drawings and data. The minimum installation temperature for
the heating device is -18°C. The heating device shall be connected to cold leads
of a weather-resistant type. The installer should protect the cold leads from
damaged by installing them in a rigid metal or nonmetallic raceway.
5 INSTALLATIONS OF THE CONNECTION SET AND COLD
LEAD
Important: Tools and materials required
You will require the following items to install and test the heating system:
Scissors
Utility knife
Wire strippers
Pliers
Heat gun
Multimeter
5.1 Structure of the BVF SRHC 18-36 heating cable

BVF SRHC 18-36 installation manual
5.2 Installation of the cold lead to the heating cable with the connection set
1. Slide 127mm
tube and 203mm
black heat-
shrinkable tube
over end of the
plug-in cord.
2. Lightly score
completely around
and then down
outer jacket. The
length is 70mm.
3. Bend heating
cable to break
jacket at score then
peel off outer
jacket
4. Unravel the
braid back to the
out jacket.
Straighten the braid
and twist into a
“pigtail”.
5. Lightly score
completely around
and then pull down
inner jacket. The
length is 45mm.
6. Bend heating
cable to break
jacket at score, then
peel off inner
jacket.
7. Skive matrix
material from
conductors with
utility knife.
8. Slide the 3.2mm
×25mm shrink
tubes over bus
wires.
9. To shrink tubing
move heat source
continuously from
side to side. While
shrinking, ensure
that tubes remain
up against black
core.
10. Center the
15mm×25mm heat-
shrinkable tube
over the end of
heating cable as
shown.
11. Shrink the tube
completely until it
shrinks and
adhesive flows out
both ends.
12. Immediately
after shrinking,
pinch with pliers
between wires
while tube is still
hot. Hold for 10
seconds to ensure
seal.

BVF SRHC 18-36 installation manual
13. Trim the front
bus wires to 7mm.
14. Use insulated
bus wire crimps or
a crimp tool to
connect black and
white wires to bus
wires of heating
cable. Polarity does
not matter.
15. Remove
release paper from
strips，wrap one
strip of mastic
around the black
wire against the
end of the splice.
16. To provide a
water block, then
repeat for the white
wire Squeeze the
mastic together
17. Center the
127mm heat-
shrinkable tube
over the splice.
Shrink the tube
completely.
18. Make sure the
adhesive will
appear at both
ends. Immediately
after shrinking,
pinch first one end
of the tube and then
the other end.
19. Use crimp tool
to connect braid
to ground wire.
20. Wrap black
cloth tape evenly
around crimp and
splice. Cover crimp
completely.
21. Center the
203mm heat-
shrinkable tube
over and shrink the
tube completely.
22. Make sure the
ring of adhesive
will appear at both
ends. Total heating
time should be
about 3 minutes.
6 COMMISIONING
Important
For the extended 10-year warranty to apply, you must perform these tests, record
the results on the warranty card, and retain a copy of the record.
You must perform the Insulation Resistance Test, the Heating Cable Resistance
Test, during the installation process.

BVF SRHC 18-36 installation manual
EXTENDED WARRANTY
For a period of ten (10) years from the date of purchase warrants that the BVF
SRHC 18-36 heating cable is free from defects in material, design and
workmanship. The warranty is only valid if the warranty certificate has been
properly completed, and the installation is in accordance with the installation
instructions. For more details check the warranty certificate.
The distributor can accept no responsibility for possible errors in catalogues,
brochures, other printed materials, and website information. The distributor
reserves the right to alter its products without notice. ‘BVF Heating Solutions’ is
a registered trademark of BVF Heating Solutions Ltd. All rights reserved.