SPECIFICATION GUIDELINE FROST PROTECTION FOR PIPES. Tender Specification. Engineering Specification for Pipe Frost Protection. Contents.

Transcription

1 Tender Specification Package #: Trace Heating <INSERT> Engineering Specification for Pipe Frost Protection Contents Y24 Trace heating 2 Appendix A Schematics & Drawings 8 Prepared by: Authorised by: Issued by: Revision: Date: <Name> <Name> <Name> <Ref.> <Date> THERMAL BUILDING SOLUTIONS EN-RaychemPipeFrostY24-ES-EU0397_R0 1

2 Y24 Trace Heating of Building Services Y24 GENERAL STANDARDS: Comply with BS 7671 (IEE Wiring Regulations) and heat tracing standard EN ELECTRIC TRACE HEATING, CONSTANT POWER, RCD PROTECTION: Supply electric trace heating complete with fixing tape, Cold applied connection devices, and controls. Heater Self-regulating heating tape. Insulation - Thermoplastic elastomer or modified polyolefin (cross-linked). Jacket & Tinned-copper braid. Electrical protection - Provide MCB and RCD protection. INSTALLATION OF ELECTRIC TRACE HEATING: Install electric surface heating in accordance with EN and manufacturer's instructions. Ensure the pipe is cleaned of all abrasive material prior to application. All insulated pipes exposed to risk of freezing shall be fitted with an energy-efficient, self-regulating trace heating system, as manufactured by Pentair Thermal Management and known as the Raychem WinterGard System (FS-A-2X, FS-B-2X, FS-C-2X). The system shall be complete with cold components, energy-efficient controls and a 10 year product warranty on heaters & components, and 2 years on controls. When installed by Pentair Thermal Management or by a trained Certified Pro installer (named by the manufacturer), a 12 Year Warranty on heaters and accessories and 6 Years on controls is applicable. The self-regulating heating cables shall be capable of demonstrating a lifetime in excess of 40 years. The self-regulating heating cables shall have modified polyolefin electrical insulation (radiation cross-linked, to ensure long life expectancy), tinned-copper braid and modified polyolefin over jacket with metre marks for ease of installation. The self-regulating index of the heating cable shall be at least All cold water services shall be frost protected with FS-A-2X (FS-B-2X on larger pipes) and installed to a maximum circuit length of 150m (105m for FS-B-2X). Interconnection and termination shall be with cold applied, insulation displacement connectors and gel type end seals, UV resistant, IP 68, 65 C rated, with audible and visual installation confirmation, as manufactured by Pentair Thermal Management and known as RayClic. THERMAL BUILDING SOLUTIONS EN-RaychemPipeFrostY24-ES-EU0397_R0 2

3 All LPHW services shall be frost protected with FS-C10-2X and installed to a maximum circuit length of 180m. All fatty waste services shall be protected with FS-C-2X, installed to a maximum circuit length of 90m. Interconnection and termination shall be made with heat shrinkable components and junction boxes as manufactured by Pentair Thermal Management. Control of heat-tracing circuits on cold water services shall be via an energy-efficient, proportional ambient sensing control (PASC) thermostat (Raystat-Eco-10); and for LPHW or fatty waste services via a programmable, energy-efficient line sensing thermostat (Raystat-Control-10), as manufactured by Pentair Thermal Management. The controllers shall have the following functions - Off site programming capability without external power supply, 25 amp switching rating (to allow switching of a maximum circuit length), sensor failure alarm, voltage failure alarm, low temperature alarm, selectable fail safe mode (either fail-on or fail-off), alarm relay for remote BMS monitoring and additionally, for the line sensing thermostat, adjustable hysteresis and high temperature alarm. For larger installations, the following Control Panel and Control & Monitoring solutions should be employed: SBS-xx-SV control panel with integrated electrical safety devices. ACS-30 Control & Monitoring system with centralised user interface and decentralised (Modular) power and control modules. All heating cables shall be installed straight traced (i.e. not spirally wound), within maximum circuit lengths, tested and commissioned strictly in accordance with the manufacturer s instructions, preferably by Pentair Thermal Management or a specialist installer named by the them. All pipes with electrical heat-tracing shall be provided with suitable warning signs, visible from all sections, at intervals of no more than 3m, placed on alternate sides of the pipe. All connections between the electrical supply, control panel and heat tracing circuits shall be installed by an approved electrical contractor. THERMAL BUILDING SOLUTIONS EN-RaychemPipeFrostY24-ES-EU0397_R0 3

4 Multi-Circuit Control & Monitoring SBS-xx-SV All frost protection trace heating circuits shall be controlled and monitored via an integrated electrically protected, multi-circuit control panel, SBS-xx-SV, by Pentair Thermal Management. The panel shall provide control and monitoring functionality for a multiple circuit pipe frost protection system including the provision of all electrical and circuit protection devices. The electrical panel shall be certified and approved by the manufacturer for use with the trace heating system. The control panel shall be available, as standard, in the following variants: SBS-03-SV (Up to 3 heating circuits) SBS-06-SV (Up to 6 heating circuits) SBS-09-SV (Up to 9 heating circuits) SBS-12-SV (Up to 12 heating circuits) The control panel shall be capable of either ambient temperature sensing or line temperature sensing control and monitoring. Where ambient sensing is specified, proportional ambient sensing control (PASC) shall be implemented to ensure energy efficiency. Where line sensing is specified, a line sensor shall be provided for every 3 circuits to facilitate greater control of the system and energy efficiency. The control and monitoring panel shall have, as a minimum: EN /EN compliance, CE approved for use with heat tracing systems. RAL7035 (Light Grey) Coated Metal Housing IP54 rated. Type C circuit protection and residual current device (30mA rated) per heating circuit. Built-in potential free alarm contact to signal: Circuit breaker failure mode RCD failure mode Loss of power mode Controller failure or error mode Selection switch to enable system testing and override capability. Selectable switching: Automatic mode/off Mode/On mode (override of control and sensor.) Lights to indicate when circuits are on (green) and warning lights (red) to indicate alarm or failure. All electrical connections between the electrical supply, control panel, and the heating circuits shall be carried out by an approved electrical contractor. THERMAL BUILDING SOLUTIONS EN-RaychemPipeFrostY24-ES-EU0397_R0 4

5 All heat tracing circuits shall be protected with integrated circuit protection, MCB s (BS EN type C/D) and RCD (30mA sensitivity, tripping within 100ms). The control panel shall be EN /EN compliant, CE approved for use with heat tracing systems. The panel shall include, for ambient sensing, an integrated proportional ambient sensing controller (PASC), or for line sensing, a line sensing controller with a minimum of 1 sensor per 3 heating circuits. THERMAL BUILDING SOLUTIONS EN-RaychemPipeFrostY24-ES-EU0397_R0 5

6 ACS-30 Control & Monitoring System All heat-tracing circuits shall be controlled and monitored via an electrically protected, multi-circuit control solution, with an integrated centralised user interface terminal (UIT), known as Raychem ACS-30, as manufactured by Pentair Thermal Management. The UIT shall include 3 customisable alarm outputs for customer specification. The control & monitoring (C&M) system shall provide control and monitoring functionality for a multiple circuit heat-tracing system including the provision of all electrical and circuit protection devices. The Control system shall be certified and approved by the manufacturer for use with the heat-tracing system. The C&M system shall be modular for easy design and shall comprise some or all of the following product modules: ACS-30-EU-UIT2 Touch-screen colour user interface terminal for control and monitoring of up to 260 individual circuits (Always included in the system). ACS-30-EU-PCM2 power & control modules which include integrated control & monitoring capability and electrical safety for equipment personnel and circuit protection switchgear. The power & control module will also include 5, 10,or 15 heating circuit capability, dependent upon selection, and will include an input (temperature sensor or external device) per circuit for individual heater circuit temperature monitoring (At least one PCM shall be included in the system). ACS-30-EU-Moni-RMM2-E remote monitoring module for the addition of 8 resistance temperature detectors (RTDs) for connection to the ACS-30-EU-PCM or to the - ACS-30-EU-UIT2. Up to 16 RMM modules may be controlled via a single User interface Terminal (UIT). The control system shall be capable of controlling and monitoring up to 260 individual circuits of heat-tracing via a centralised user interface terminal (UIT) for easy system monitoring. The heating circuit power and control modules (PCM) shall be modular, decentralised solutions to enable placement throughout the building, or group of buildings, in proximity to the required heating system to limit the quantity of power cabling. The PCMs shall be connected to the UIT via RS-485 cable for communication, control & monitoring purposes. In the event of power failure or communication failure from the UIT, the PCM shall be capable of continued function to maximise safety and system continuity. The C&M system shall be capable of monitoring circuit by circuit line or ambient temperature, energy consumption, energy usage pattern, and ground fault/earth fault detection. There shall be alarm function on a circuit by circuit basis. In the event of an alarm, the UIT shall provide details of the alarm reason as well as indicating the specific circuit(s) affected. The control system shall be compliant with European norm EN60439 and be tested and CE approved to this standard. All UIT and PCM units shall be RAL7035 (light grey) coloured metal enclosures for hard wearing durability. Type C circuit protection and residual current device (30mA rated) shall be included in the PCM per heating circuit. All electrical connections between the electrical supply, UIT, power & control modules, ancillaries, and heating circuits shall be carried out by a qualified and approved electrical contractor. THERMAL BUILDING SOLUTIONS EN-RaychemPipeFrostY24-ES-EU0397_R0 6

7 Engineering Notes All exposed insulated pipes shall be fitted with an energy efficient, self-regulating, Trace Heating System, known as Raychem WinterGard (FS-A-2X, FS-B-2X, and/or FS-C-2X ). Interconnection and termination shall be with cold applied, insulation displacement type connectors and gel type end seals, known as Rayclic. The trace heating circuits shall be controlled by an energy efficient, proportional ambient sensing thermostat (PASC), known as Raystat-Eco-10, an SBS-xx-SV control panel, or an ACS-30 Control & Monitoring System, from Pentair Thermal Management. LPHW or fatty waste services shall be protected by WinterGard FS-C10-2X and FS-C-2X respectively and controlled by a line sensing thermostat, known as Raystat-Control-10. The WinterGard (FS) heating system with multiple circuits shall be controlled via the Multi Circuit Control Panel, SBS-xx-SV, or the complete Control & Monitoring system, ACS-30, from Pentair Thermal Management. The self-regulating heating cables shall be installed straight traced (i.e. not spirally wound), insulated, tested and commissioned strictly in accordance with the WinterGard design guide, preferably by Pentair Thermal Management or a specialist installer named by them. THERMAL BUILDING SOLUTIONS EN-RaychemPipeFrostY24-ES-EU0397_R0 7

8 Appendix A. THERMAL BUILDING SOLUTIONS EN-RaychemPipeFrostY24-ES-EU0397_R0 8

9 UNITED KINGDOM Tel: Fax: IRELAND Tel: Fax: All Pentair trademarks and logos are owned by Pentair. All other brand or product names are trademarks or registered marks of their respective owners. Because we are continuously improving our products and services, Pentair reserves the right to change specifications without prior notice. Pentair is an equal opportunity employer Pentair. All Rights Reserved. THERMAL BUILDING SOLUTIONS EN-RaychemPipeFrostY24-ES-EU0397_R0 9