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Raychem
Trace Heating Systems
2. Connection System
Consult the selection matrix in order to
determine the type and quantity of components required to form a
variety of heating cable connection configurations.
Note: All Raychem heating cable must be used with
the RayClic connection system, with the exception of FS-C-2X heating
cable which may only be used with the junction box and heat shrink
connection system.
3. Heater Length Calculation
Raychem heating cables are straight traced.
Length required = Total pipe length
+ 0.3m per power connection
+ 0.5m per splice
+ 1.0m per T-connection
+ 1.2m per four way connection
+ 0.5m per valve/stop cock etc
+ any heater loops
+ additional amounts for heat sinks
+ 5% contingency
4. Electrical Circuit Protection
*Circuit breakers MCBs to BS EN 60898 Types C or
D, or equivalent. Additionally a residual current device of 30mA
sensitivity that trips within 100ms should be used. Consideration
should also be given to power cable leakage current.
5. Number of Electrical Circuits
6. Electrical Loading
HWAT-M 9.3W/m @ 55ºC
FS-A-2X 10W/m @ 5ºC
FS-B-2X 26W/m @ 5ºC
HWAT-R 13.3 W/m @ 60ºC
FS-C-2X 31W/m @ 5ºC
7. Trace Heating Systems
Typical Raychem Hot Water Maintenance System
In a typical Raychem hot water maintenance system
the heating cable is installed as a straight trace along the hot
water pipe. It is attached directly to the pipe with glass cloth
tape or, if installing on plastic pipes, aluminium tape.
The 230V connection takes only a minute to
install, using the RayClic electrical connection, fastened to a
bracket. For installations requiring variable maintained
temperatures the special HWAT-ECO control unit should be used. The
HWAT-ECO incorporates a timer and a time-temperature programme can
be stored. The system can be further controlled using the BMS,
facilitating thermal Legionella prevention or weekend shut-down in
addition to variable temperature maintenance in the range 50oC to
60oC.
At a pipework tee a RayClic T connection can be
used, attached to a special bracket. The incoming heating cable
powers both outgoing cables.
At the ends of the piping system the heating
cable is cut to length and terminated with the silicone gel-filled
end seals, which are included with every RayClic connection kit.
Typical Raychem Advanced Frost Protection System
A typical Raychem system, as with the system
above is installed as a straight trace along the exposed water
services pipework. It is attached directly to the pipe with glass
cloth tape or, if installing on plastic pipes, aluminium tape.
The heating cables should then be connected and
terminated with the connection systems identified in section 2 at
the top of this page.
Control of the freeze protection circuits on
temperature sensitive water services, such as potable and chilled
water pipework, should be achieved by the use of an AT-TS-13 pipe
sensing thermostat or Raystat-ECO-10 “Smart” Controller (providing
increased energy efficiency) located on each trace heating circuit.
The control of all non-temperature sensitive water services can be
achieved by using a single AT-TS-13 ambient sensing thermostat,
which switches the trace heating system on via a contactor in the
distribution board.
General
Following the installation of the heating cable,
the insulation should be installed to the design recommendations.
“Electric Traced” labels are applied in visible areas at intervals
of 5 metres. For further information please contact us on the number
below.
Request information above
Raychem Trace Heating Tyco Thermal Controls Raychem Trace Heating Systems
Request information above
Raychem Tyco Thermal Controls Electric Underfloor Heating Electrical Under
Floor Heating Tyco T2
Technical information associated with:
Raychem Underfloor Heating Product Selection
Technical information associated with:
Raychem Trace Heating Product Selector Part 1
Technical information associated with:
Raychem Trace Heating Product Selector Part 2
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