NBS Source
List your products
Hot Water Maintenance Controller HWAT ECO v5

Hot Water Maintenance Controller HWAT ECO v5

Third party certifications:
  • BSI Kitemark

    BSI Kitemark

    Certificate type

  • QA Certificate

    QA Certificate

    Certificate type

nVent Thermal Management

Single Circuit, Single Application Controller: Inteligent electronic temperature control unit with integrated time clock.

Jump to:
+44 (0) 7836 236534 www.nVent.com/RAYCHEM
Description

The domestic hot water supply can be designed as a single pipe system (no return pipes or recirculation pumps, no hydraulic balancing required) fitted with an energy efficient, self-regulating temperature maintenance cable system to compensate for heat losses and to maintain pipe temperatures. The domestic hot water supply can also be designed as a hybrid system, with recirculation loops on the main supply pipes optimized by the use of a self-regulating temperature maintenance cable system on all branch pipe run outs.

Providing the convenience of instant hot water, the Raychem HWAT system keeps water at the right temperature in a building’s water distribution pipe work. No return pipes or recirculation pumps are fitted and no hydraulic balancing is required.

To compensate for heat losses and to maintain pipe temperatures, all hot water supply pipes are fitted with an energy efficient self-regulating heating cable system (Raychem HWAT).

The system is complete with self-regulating temperature maintenance cables, an advanced energy efficient controller and cold applied components for interconnection and termination.

Features and benefits:

  • Less water volume and less heat loss in the pipe work help prevent bacteriological problems.
  • A flexible and space saving system, no return pipes.
  • The heating cable is simply fixed on the supply pipe.
  • The heat loss in the system is significantly lower as only the heat loss from the feed pipe is to be compensated for, there is also no power requirements for circulation pumps.
  • Suitable for use with smaller boilers as there is no cold return, the water heat-up is more efficient.
  • The intelligent HWAT-ECO control unit saves power as it can lower the temperature or switch off during water consumption peaks.
  • The system has no mechanical parts to wear out.
  • The self-regulating Raychem heating cable has a demonstrable useful lifetime of over 40 years.

System components:

  • Self-regulating temperature maintenance cable.
  • Cold applied insulation displacement components, for interconnection.
  • Cold applied, gel-filled end seal.
  • Single circuit, single application energy efficient controller.
  • Multi circuit, single application control panel with integrated energy efficient controller.
  • Multi circuit, multi-application distributed control and monitoring system with integrated energy efficient controller.

Self-regulating temperature maintenance cable (HWAT):

The self-regulating temperature maintenance cables are specifically designed, tested and approved to IEC 62395:2013 and IEEE 515.1, suitable for use with 20 A circuit breakers and with a minimum bend radius ≤10 mm.

The cable includes a conductive polymer core (qualified for hot water temperature maintenance), modified polyolefin electrical insulation (radiation cross-linked, to ensure long life expectancy), laminated aluminium foil layer (to protect the heater core from chemical ingress), tinned copper braid with minimum 70% coverage and modified polyolefin over jacket printed with cable model, batch number and metre marks.

Cold applied interconnection and termination components (RayClic):

Interconnection and termination via cold applied insulation displacement connectors and gel type end seals, which are UV resistant, IP68 and 65°C rated, suitable for 2 500 VDC insulation resistance test, with Torx head fittings for ease of installation and both audible and visual installation confirmation.

Thermal insulation:

Insulation selection and thickness are strictly in accordance with the self-regulating temperature maintenance cable system design guide, with variations in ambient temperature fully considered.

Approvals and warranty:

The temperature maintenance cables, controls and system components are CE marked and certified according to EN codes by BSI, VDE, CSTB, SEV, OVE and fulfil the hygiene requirements of DGVW and SVGW.

Ten year warranty on cables, plus components and two years for controllers subject to being designed and installed strictly to their requirements, extended to 12 years and six years respectively when installed by the manufacturer or a trained installer recognised by them - consult manufacturer for details.

Single circuit, single application energy efficient controller:

All self-regulating hot water temperature maintenance circuits are controlled with an energy saving, programmable, single circuit local controller to provide adjustable maintained temperatures in the range 50-65°C (HWAT ECO).

Multi circuit, single application control panel with integrated energy efficient controller:

All self-regulating hot water temperature maintenance circuits are controlled and monitored using an energy saving, programmable, electrically protected, multi-circuit control panel (SBS-xx-HV-EC0-10), complete with integrated energy efficient controller (HWAT ECO).

Multi circuit, multi-application distributed control and monitoring system with integrated energy efficient controller:

All self-regulating hot water temperature maintenance circuits shall be controlled and monitored using a centralized control system with distributed power and control modules (ACS-30), complete with integrated energy efficient controller (HWAT ECO). The centralized control system provides pre-programmed parameters to provide concurrent control for hot water temperature maintenance, pipe freeze protection, flow maintenance, surface snow melting, roof and gutter de-icing and floor heating applications.

The domestic hot water supply has been designed as a single pipe system, no return pipes or recirculation pumps shall be fitted and no hydraulic balancing is required. To compensate for heat losses and to maintain pipe temperatures, all hot water supply pipes shall be fitted with an energy efficient self-regulating heating cable system. The system shall be complete with self-regulating temperature maintenance cables, advanced energy efficient controller and cold applied components for interconnection and termination.

Specification data

Product Reference

Hot Water Temperature Maintenance

Self-regulating hot water temperature maintenance cable

HWAT M

Provides pipe maintained temperatures between 50–55°C.

HWAT R

Provides pipe maintained temperatures between 50–65°C.

Cold applied, insulation displacement interconnection components and end seals

RayClic-CE-02

Power connection with 1.5 m power cable, gel-filled end seal and support bracket. IP68.

RayClic-E-02

Gel-filled end seal.

RayClic-PS-02

Powered splice, connection for two cables with 1.5 m power cable. Supplied with two gel-filled end seals and support bracket. IP68.

RayClic-PT-02

Power T-connection with 1.5 m power cable for three cable connection. Supplied with three gel-filled end seals and support bracket. IP68.

RayClic-S-02

Splice for joining two lengths of heating cable, with one support bracket. IP68.

RayClic-T-02

T-connection for three cables. Includes gel-filled end seal and support bracket. IP68.

RayClic-X-02

Four-way cable connection. Supplied with two gel-filled end seals and support bracket. IP68.

Energy efficient controls

-

Single circuit, single application energy efficient controller

HWAT-ECO

Energy saving, programmable control unit.

Multi circuit, single application control panel with integrated energy efficient controller

SBS-01-HM-ECO-10

Control and monitoring for one heating circuit, basic version. 380 x 600 x 210 mm. Connected rating: 4.5 kW.

SBS-03-HV-ECO-10

Control and monitoring for 2–3 heating circuits. 380 x 600 x 210 mm. Connected rating: 14 kW.

SBS-06-HV-ECO-10

Control and monitoring for 4–6 heating circuits. 600 x 600 x 210 mm. Connected rating: 28 kW.

SBS-09-HV-ECO-10

Control and monitoring for 7–9 heating circuits. 600 x 600 x 210 mm. Connected rating: 42 kW.

Multi circuit, multi application distributed control and monitoring system with integrated energy efficient controller and circuit protection

ACS-30-EU-Moni-RMM2-E

Remote monitoring module for the ACS-30 Control and Monitoring System, to measure additional temperatures for control and monitoring of heating cable circuits. Up to 16 RMMs may be controlled by a single UIT, with up to 8 RTDs per RMM.

ACS-30-EU-PCM2

Power Control Module for ACS-30, to provide distributed power connection, control and monitoring of heating cable circuits. At least one PCM must be included.

ACS-30-EU-UIT2

User Interface module for the ACS-30 Control and Monitoring System, for control and monitoring up to 260 heating cable circuits. Up to 52 PCMs may be connected in series to each UIT.

Standard product features

Thermal insulation:

Follow the specific design schedules.

Electrical connection:

  • Supply voltage: 230 VAC/ 50 Hz.
  • Connections between the electrical supply, control panel and trace heating circuits shall be installed by an approved electrical contractor
  • Circuit breaker protection required by MCB (BS EN 60898 type C or D). Residual current device required, RCD (30 mA sensitivity, tripping within 100 ms). Maximum approximately 500 m of self-regulating heating cable can be monitored per RCD.

Design:

The manufacturer shall be able to provide all design calculations, including heat loss and corresponding selection of heating cables; electrical schedules providing cable lengths, circuit breakers, circuit start up currents, operating currents and loads, line list summary and single line details; system layout and schematic drawings indicating power connections, tees and end seals; controller configuration listing and wiring diagrams.

Installation:

All temperature maintenance cables shall be installed in accordance with the design plans, within the defined maximum circuit lengths, tested and commissioned strictly in accordance with the manufacturer’s instructions (IM-CDE1547) using a 2500 Vdc megger. Thermal insulation shall be closely coordinated with the responsible sub-contractors and follow the specific design schedules. ATE-180 shall be used on plastic pipes.

Product Options

Self-regulating hot water temperature maintenance cable:

Complete with conductive polymer core, modified polyolefin electrical insulation (radiation cross-linked to ensure long life expectancy), laminated aluminium foil layer, tinned copper braid and modified polyolefin over jacket.

Multi circuit, single application control panel with integrated energy efficient controller:

Circuit protection and power load management algorithm to avoid peak power loading (IEC61439 compliant, CE approved for use with heat tracing systems).

Controls:

- RAYCHEM ACS-30 multi-circuit, single or multi-application, distributed digital control system with integrated energy efficient controller:

A centralized control system with distributed power and control modules, complete with: colour LCD touch-screen, password-protected user interface terminal (UIT) for central programming; power connection modules (PCM) to provide distributed power, circuit protection, control and monitoring; remote monitoring modules (RMM) for additional temperature measurement; BMS interface using ProtoNode high-performance multi-protocol gateway, to allow translation from native ModBus to BacNet protocols; pre-programmed parameters, to deliver concurrent control for heating cables used for pipe freeze protection, hot water temperature maintenance, flow maintenance, surface snow melting, roof/ gutter de-icing and floor heating applications. One UIT shall be included in the system, along with at least 1 PCM (to maximum 52); each PCM shall control up to five circuits. The UIT shall accept up to 16 RMM, each having up to eight temperature inputs. Available with integrated control unit: HWAT-ECO.

- RAYCHEM SBS-XX-HX-ECO-10 multi circuit, single application control panel with integrated energy efficient controller:

Steel plate housing, wall-mounted version, equipped with mains power switch, RCD/ CB combination, inlet and outlet terminals. Completely assembled, turnkey condition wired and inspected cable guides in base of housing. The control panel contains a HWAT-ECO temperature control.

  • SBS-01-HM-ECO-10: Control and monitoring for one circuit.
  • SBS-03-HV-ECO-10: Control and monitoring for up to three circuits.
  • SBS-006-HV-ECO-10: Control and monitoring for up to six circuits.
  • SBS-09-HV-ECO-10: Control and monitoring for up to nine circuits.

- RAYCHEM HWAT ECO single circuit, single application energy efficient controller:

  • Simple user interface.
  • Flexible temperature control of hot water, maintained in the range of 50–65°C.
  • Energy savings through an integrated function that lowers the maintain temperature during hours of low water consumption.
  • Heat-up cycle function that increases the water temperature of the hot water in the pipes.
  • Hot water storage and pipe temperature monitoring, with high/ low temperature alarm and system shut down.
  • Alarm relay to signal power, temperature or communication problems.
  • Intuitive set-up and programming.
  • Seven pre-defined building timer programmes that can be customized by the user.
  • 5" colour touch screen user interface.
  • Pre-set up in power-off mode by external power bank/ charger via USB connection.
  • Password protection.
  • Switching capacity: 20 A.
  • Approval: VDE according to EN 60730.
  • EMC according to EN 50081-1 and -2 for emission and EN 50082-1 and -2 for immunity.

Accessories:

A range of accessories including fixings, tapes and labels are available, consult manufacturer/ technical literature for details.

Digital objects
PlatformCompatibleVersionCertified to
Revit
Revit 2017 1 2.1
Download now from NBS National BIM Library
Third party certifications
  • British Standards Institution (BSI) - certficate
  • CE marked : Applies to self-regulating temperature maintenance cables, controls and system components
  • VDE : Applies to self-regulating temperature maintenance cables, controls and system components
  • CSTB : Applies to self-regulating temperature maintenance cables, controls and system components
  • OVE : Applies to self-regulating temperature maintenance cables, controls and system components
  • SEV : Applies to self-regulating temperature maintenance cables, controls and system components
  • DGVW : Applies to self-regulating temperature maintenance cables, controls and system components (hygiene requirements)
  • SVGW : Applies to self-regulating temperature maintenance cables, controls and system components (hygiene requirements)
Similar products from nVent Thermal Management