- Maintains required temperature in hot water pipes
- Ensures that hot water is instantly available
- Suitable for both domestic and commercial buildings
Range & Prices
The prices shown are list prices and perfectly safe to use for budget purposes. Contact your electrical wholesaler for final prices.
| Model | Description | Price | |
|
WM-09 | Hot Water Maintenance Cable (supplied by the metre) | £26.00 |
 |
CRJ-T1 | Termination kit (one required per circuit) | £22.00 |
 |
CRJ-S | Splice kit (one required per splice or T joint) | £23.00 |
 |
PF-L | Caution label (10 pack) | £9.00 |
 |
PF-T | Fixing tape 33m x 19mm | £4.50 |
 |
AL-50 | Aluminium tape 45m x 50mm (for use with plastic pipes) | £17.00 |
 |
THJ | Junction box IP66 6-way terminal black 40A | £50.00 |
Technical Specification
| Voltage: | 230V |
| Nominal output at 55°C: | 9W/m |
| Minimum installation temperature: | -40°C |
| Maximum exposure temperature (power on): | 100°C |
| Maximum exposure temperature (power off): | 100°C |
| Minimum bending radius: | 30mm |
| Maximum circuit length: | 128m |
WM cable maintaining water at a desired temperature
Selection
WM hot water maintenance cable is self-regulating. This means that the cables output reduces as the pipe temperature increases and that the cable cannot overheat or burn out.
The cable should be fixed to a water pipe in a straight line and must be covered with insulation. WM can be used with plastic or stainless-steel pipes but these pipes must be wrapped in aluminium tape before the cable is installed.
Insulation Thickness (mm) – Cable should be installed in a straight line under installation |
||||||
| Maintain Temperature | 15mm pipe | 22mm pipe | 28mm pipe | 35mm pipe | 42mm pipe | 54mm pipe |
| 60°C | 25 | 30 | 40 | 50 | 60 | 75 |
| 55°C | 20 | 25 | 30 | 40 | 50 | 60 |
| 50°C | 15 | 20 | 25 | 30 | 40 | 50 |
Maximum circuit length and breaker size |
|
| Max. Circuit (m) | Breaker (A) |
| 128 | 20 |
Selection of Ancillary items
Termination kit
One CRJ-T1 termination kit will be required per circuit. The kit includes the necessary crimps and shrink-on material to prepare one end of the cable for electrical connection and to effectively seal the far end. The kit also includes a nylon gland suitable for making a moisture tight seal into a suitable terminal enclosure.
Splice kit
One CRJ-S1 slice kit will be required for each splice or T joint. . The kit includes the necessary crimps and shrink-on material to join two lengths of cable and to effectively seal the far end.
Fixing Tape
PF-T fixing tape is supplied in 33m rolls and is ideal for fixing heating cable to the pipe. We recommend securing the cable at 200mm intervals.
Aluminium Tape
When heating a plastic pipe, the pipe should be wrapped in aluminium tape before the heating cable is installed. AL-50 is supplied in 45m x 50mm rolls.
Warning Labels
PF-L warning labels are supplied as a pack of 10 and should be fixed to the outside of the insulation at regular intervals.
Images
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- WM Hot Water Maintenance Cable
Installation images
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- WM cable maintaining water at a desired temperature
