>> H2OWAT is a parallel resistance, cut to length on site self-regulating heating cable designed to compensate for heat losses from hot water distribution systems, as well as offering the option to disinfect periodically against Legionella.
The H2OWAT heating cable compensates for heat loss from hot water pipe work particularly where modern non-recirculating systems employing a single feed pipe are used. Feed pipe to hot taps
cools rapidly under no-flow conditions and this can be overcome by tracing the pipe with heating cable under thermal insulation.
This will ensure that water is always available for draw-off at a constant temperature usually between 55ºC and 65ºC.
H2OWAT heating cable adjusts heat output to equal the heat loss from the pipe work. As pipe temperature falls under no-flow conditions H2OWAT increases output. As the pipe temperature increases under hot water flow conditions so output from H2OWAT decreases.
The heating cable has a core comprising two bus-wire conductors contained within an extruded semi-conductive self-limiting heater core with an outer insulating polyolefin sheath.
The cable has an earth protection screen in the form of a foil jacket covering a multi strand earth lead.
The cable is finished with a further protective thermoplastic outer sheath over the earth screen.
|Type||Volts||Max circuit length (m)|
|Size||10,1mm x 3,2mm||10,1mm x 3,2mm|
|Protection type C to BS EN 60898:1991||25A||35A|
|Max surface temperature||Continuous 100ºC / Intermittent 120ºC|
|Power supply voltage||230V Single phase|
|H2OWAT55||22,5W/m @ 0ºC – 9W/m @ 55ºC|
|H2OWAT65||31,4W/m @ 0ºC – 13W/m @ 65ºC|
|Pipe size (mm)||15||28||35||42||54|
|Insulation thickness (mm)||20||25||30||37||50|
Assumed constant ambient of 18ºC and Thermal Conductivity of 0,035W/(m.K).