References

Heating, Plumbing & Electrics

255 sources in the library on heating, plumbing & electrics. Each one says what the document covers and what it is good for. Name a source to see which document it is and where to read it. One at a time. Page 6 of 7.

1. supplier figure RN-Q940O5

   Aico

   Manufacturer data sheet for the Ei3014 mains powered heat alarm, the correct device for a kitchen where a smoke alarm would false-alarm on cooking. Sensor type is a Class A1 thermistor that activates at 58C, with a small thermal mass for a faster response. Supply is 230V AC 50Hz with a 10 year plus rechargeable lithium back-up cell and a 10 year alarm life. Standby power consumption is 0.25 W. Sound output is 85 dB(A) at 3 metres. Operating temperature range is 0C to 40C. Weight is 312g, or 378g boxed. Warranty is 5 years limited. The 58C trigger is the number that explains why a heat alarm will not warn you early in a smouldering fire and must be interlinked with optical alarms elsewhere.

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2. supplier figure RN-8179JP

   Aico

   Manufacturer data sheet for the Ei3016 mains powered optical smoke alarm. Sensor is a high performance optical type with automatic dust compensation to reduce false alarms, so it responds fastest to smouldering fires and is the type intended for hallways, landings, bedrooms, living rooms and dining rooms. Supply is 230V AC 50Hz with a 10 year plus built in tamper proof rechargeable lithium cell as mains failure back-up, and the alarm itself has a 10 year life. Sound output is 85 dB(A) at 3 metres. Operating temperature range is 0C to 40C. Weight is 336g, or 402g boxed, with a package size of 180 x 155 x 62 mm. Warranty is 5 years limited, which is shorter than the 10 year alarm life. AudioLINK+ lets installation and activation data be read out of the alarm through its sounder to a phone app.

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3. supplier figure RN-PVRMO4

   Aico

   Manufacturer data sheet for the Ei3018 mains powered carbon monoxide alarm. Sensor type is an electrochemical cell with a 10 year sensor life, and the alarm has a 10 year life overall. Supply is 230V AC 50Hz with built in tamper proof rechargeable lithium cells as back-up. Sound output is 85 dB(A) at 3 metres. Operating temperature range is 0C to 35C, narrower than the smoke alarm, which matters when siting one in an unheated space. A yellow indicator signals fault or end of life. Weight is 310g, or 376g boxed. Warranty is 5 years limited. It can run standalone or be interconnected with other alarms in the range.

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4. supplier figure RN-EWGU13

   Aico

   Manufacturer data for a mains powered multi-sensor fire alarm combining a heat and an optical sensor in one unit so it detects both slow smouldering and fast flaming fires. It is mains powered with a 10 year rechargeable lithium cell back-up and carries a 10 year guarantee, twice the 5 year warranty on Aico's single sensor alarms. Sound level is 85 dB(A) at 3 metres. Operating temperature range is -10C to 40C, wider at the cold end than the 0C floor on the single sensor optical and CO models, which matters for a hallway near an external door. Weight is 346g, or 412g boxed. It interconnects over hard-wired, RadioLINK radio or hybrid systems and is compatible with the rest of the 3000 Series, which covers both fire and carbon monoxide from one range.

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5. supplier figure RN-E4QY9I

   Alumasc Water Management Solutions

   Alumasc GX pressed aluminium gutters. Joggle joint profiles: 100 x 75mm GXJ1, 125 x 100mm GXJ2, 150 x 100mm GXJ3, 180 x 125mm GXJ4, 200 x 150mm GXJ5. Smooth profiles: 120 x 75mm GXS1, 140 x 100mm GXS2, 190 x 125mm GXS3, 220 x 150mm GXS4, 225 x 150mm GXS5. Moulded: 113 x 75mm GXM1. Finished with a BBA approved polyester powder coating applied in Alumasc's own facility.

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6. supplier figure RN-XIH1L5

   Alumasc Water Management Solutions

   Alumasc Heritage cast aluminium gutter range, sized in imperial-derived profiles. Half round: 100mm (4 in) HR1, 113mm (4.5 in) HR2, 125mm (5 in) HR3, 150mm (6 in) HR6, plus beaded half round 113mm BHR5 and 125mm BHR6, and 113 x 75mm (4.5 x 3 in) HR4. Ogee: 100mm (4 in) OG1, 113mm (4.5 in) OG2, 125mm (5 in) OG3. Moulded: 100 x 75mm (4 x 3 in) MG2, 125 x 100mm (5 x 4 in) MG1, 150 x 100mm (6 x 4 in) MG3.

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7. supplier figure RN-0H0929

   Baxi

   Manufacturer specification table for the Baxi 800 Combi 2 in 24, 30 and 36 sizes. Central heating heat output (Pn) is 4.8-20 kW, 5.8-25 kW and 7.2-25 kW respectively, so even the 36 model puts only 25 kW into the radiators. Domestic hot water heat output is 24, 30 and 36 kW with maximum DHW flow rates of 10.2, 12.2 and 15 l/min at a 35C rise. Minimum DHW flow rate to fire the boiler is 2 l/min and minimum operating DHW pressure is 0.5 bar. Integral expansion vessel is 7 litres on all three, giving a maximum central heating system capacity of 100 litres. External fuse rating is 3 amps. Boiler width is 395mm and installer lift weight is 29.2-30.5 kg. An Adey MagnaClean Micro2 filter is supplied with the boiler.

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8. supplier figure RN-9CX850

   Baxi

   Manufacturer specification table for a system boiler in 18, 24 and 30 sizes. Non-condensing central heating output (Pn) is 4.8-18, 4.8-24 and 5.8-30 kW, and condensing output (Pnc) is 5.2-19.9, 5.2-26.3 and 6.4-32.4 kW, so a system boiler puts its full rated output into the radiators, unlike a combi where the headline figure is the hot water rating. Maximum DHW flow rate is not applicable because hot water comes from a cylinder. Minimum operating DHW pressure is 0.5 bar and minimum DHW flow 2 l/min. Integral expansion vessel is 7 litres, giving a maximum central heating system capacity of 100 litres, which is the check to make before adding radiators to an existing system. Boiler width is 395mm and installer lift weight is 29 to 30 kg. An Adey MagnaClean Micro2 filter is included.

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9. supplier figure RN-VR2RD0

   BG Electrical (Luceco)

   Manufacturer data for a 13 amp double switched socket outlet. The socket has a twin earth terminal fitted as standard to allow a double earth facility for installations requiring a high integrity protective connection, referenced to BS 7671:2008. That detail matters on a ring final circuit feeding equipment with high protective conductor current, where a single earth terminal would not comply. Terminals are angled in-line and colour coded, and the socket is supplied with fixing screws and installation instructions.

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10. supplier figure RN-8EK2SV

    BG Electrical (Luceco)

    Manufacturer data for a weatherproof 13 amp double socket. The rating is IP66, weatherproof and dustproof, and the manufacturer states this rating applies with the plug in place and the cover closed, which is the qualification that matters: an outdoor socket in use with the lid propped open is not achieving IP66. This is the specification to check before running a garden circuit.

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11. supplier figure RN-OMFONB

    Brett Martin

    PVC-U underground drainage from 110 mm to 400 mm diameter, made to BS EN 1401-1 with BBA certificate 87/1898 for the 110 mm PVC-U pipe. Plain ended pipe wall thicknesses: B4001 110 mm x 3 m and B4011 110 mm x 6 m are 3.2 mm; B6001 160 mm x 3 m and B6011 160 mm x 6 m are 4.1 mm; the SN8 160 mm versions B6001 SN8 and B6011 SN8 are 4.7 mm. Socketed pipe socket depths: 70 mm at 110 mm, 95 mm at 160 mm, 110 mm at 200 mm. Both 110 mm and 160 mm ranges come in SN4 and SN8 stiffness. Gradient guidance: for flows under 1 l/s, pipes not exceeding 100 mm nominal bore at gradients not flatter than 1:40 have proved satisfactory; where peak flow exceeds 1 l/s a 100 mm bore may be laid at not flatter than 1:80 provided at least one WC is connected; a 150 mm bore may be laid at not flatter than 1:150 provided at least five WCs are connected. With a high standard of design and workmanship, 1:130 at 100 mm and 1:200 at 150 mm have been used successfully. The guide states that increasing pipe diameter to compensate for insufficient fall is not a satisfactory solution because it reduces velocity and depth of flow and encourages deposits. Also covers bedding materials, trench preparation, ground load protection and inspection chamber assemblies.

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12. supplier figure RN-MLLZFA

    Brett Martin Plumbing and Drainage

    Brett Martin Cascade cast iron effect rainwater system, four gutter profiles each tied to a specific downpipe: Prostyle 106mm ogee uses a 65mm square downpipe; Roundstyle 112mm half round uses a 68mm round downpipe; Deepstyle 115mm semi-elliptical high capacity uses a 68mm round downpipe; Deepstyle 170mm, the high capacity heritage profile for large roof areas, uses a 105mm round or 100 x 75mm rectangular downpipe. Corner (square section) 68mm downpipes are available for Roundstyle 112mm and Deepstyle 115mm.

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13. supplier figure RN-W574P0

    Daikin UK

    Manufacturer technical data for the 4, 6 and 8 class R-32 monobloc air to water heat pump. Seasonal space heating class is A+++ across the range at the low temperature application. SCOP is 4.48, 4.47 and 4.56 at a 35C leaving water temperature, and 3.26, 3.26 and 3.32 at 45C, so a 10 degree rise in flow temperature costs roughly 27 per cent of the seasonal efficiency. Sound power level is 58, 60, 61 and 62 dBA across models and sound pressure level measured at 1 metre is 44, 47, 48, 49 and 50 dBA. Factory refrigerant charge is 1.35 kg of R-32 on every model. Daikin defines its heating test conditions explicitly as A7 W35 (ambient air 7C, leaving water 35C) and A7 W45, which is the qualification that makes two manufacturers' COP figures comparable. Thermal store connection kits are listed at 300 and 500 litres.

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14. supplier figure RN-TSHTFK

    EnviroVent

    Manufacturer specification for a decentralised mechanical extract ventilation (dMEV) fan. Maximum flow rate is 18 l/s (65 m3/h) with a trickle speed down to 4 l/s, and specific fan power is 0.22 W per l/s, with power consumption down to 1 watt. EnviroVent states the unit meets 13 l/s for a kitchen, 8 l/s for a bathroom and 6 l/s for a toilet, which are the Building Regulations extract rates. The fan has a 100mm spigot, measures 158 x 158 x 48 mm when fitted, weighs 0.57 kg and is IPX4 rated (IP57 in the SELV version). Supply is 230V or SELV. Noise is quoted per octave band from 63 Hz to 8000 Hz with a total dB(A) at 3 metres, achieving under 20 dB(A) at 3 metres at trickle. It is SAP PCDB listed, comes with a washable mesh filter, has a set back function of up to 50 seconds, and carries a 2 year warranty. The SFP figure is what makes a continuously running fan cheap to leave on.

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15. supplier figure RN-HZG4QB

    FireAngel

    Manufacturer data sheet for a battery powered carbon monoxide alarm with a digital display. It has a 10 year life on a 10 year sealed for life lithium battery. Alarm sound level is a minimum 85 dB(A) at 3 metres. Dimensions are 129 mm wide by 76 mm high by 76 mm deep and weight is 121g. Humidity accuracy of the display is plus or minus 3 per cent RH typical. Warranty is 5 years against the 10 year alarm life. A CO alarm with a display is the type that shows a low level chronic leak that would otherwise never reach alarm threshold.

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16. supplier figure RN-JPPXFP

    FireAngel

    Manufacturer data sheet for a battery powered optical smoke alarm with a 10 year sealed for life lithium battery, the alternative to a mains wired alarm where no cable can be run. Alarm sound level is a minimum 85 dB(A) at 3 metres, the same output as a mains alarm. Weight is 138g and the alarm measures 118.1 mm diameter by 31.5 mm deep. Warranty is 5 years, half the stated 10 year battery life, which is the mismatch worth flagging to a reader planning replacements.

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17. supplier figure RN-J9Z452

    FireAngel

    Manufacturer data sheet for a multi-sensor smoke alarm. Sensor type is Thermoptek multi-sensor, combining optical smoke sensing with thermal enhancement so the alarm responds to both slow smouldering and fast flaming fires; FireAngel states this technology is used by over 90 per cent of UK fire and rescue services. Power is a 10 year sealed for life lithium battery. Alarm sound level is a minimum 85 dB(A) at 3 metres. It is certified to BS EN 14604:2005 +AC:2008. Dimensions are 130 mm diameter by 34 mm deep and weight is 155g. Operating humidity is up to 90 per cent RH non-condensing. A hush function silences a known false alarm for 10 minutes and reactivates if more smoke is detected, and a Sleep Easy function silences a low battery chirp for 8 hours. Warranty is 5 years.

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18. supplier figure RN-0MASQJ

    FloPlast Limited

    FloPlast rainwater flow capacities calculated to BS EN 12056-3, effective roof area based on the Building Regulations value of 0.022 l/s per m2. Outlet at END of run, gutter fixed LEVEL (max flow rate l/s, then BS 12056 rate, then roof area m2 for each): Half Round with 68mm round downpipe 0.92 / 0.82 l/s, 44 / 40 m2; Square Line with 65mm square downpipe 1.70 / 1.53 l/s, 81 / 73 m2; Hi-Cap with 68mm downpipe 2.05 / 1.84 l/s, 98 / 88 m2; Hi-Cap with 80mm downpipe 2.25 / 2.02 l/s, 108 / 97 m2; Niagara ogee with 65mm square 2.40 / 2.16 l/s, 115 / 104 m2; Niagara with 80mm round 2.64 / 2.37 l/s, 127 / 114 m2; XtraFlo with 110mm downpipe 4.30 / 3.87 l/s, 206 / 185 m2. Laying the gutter to a 1:350 fall raises Half Round to 1.17 l/s / 56 m2 and Hi-Cap 68mm to 2.56 l/s / 123 m2. Moving the outlet to the CENTRE of the run roughly doubles capacity: Half Round level 1.80 l/s / 86 m2, Hi-Cap 68mm 3.80 l/s / 182 m2, XtraFlo 8.20 l/s / 393 m2, and at 1:350 fall Half Round 2.60 l/s / 125 m2 and XtraFlo 11.80 l/s / 566 m2. Reduced capacities apply where bends are incorporated. Systems carry BSI Kitemark KM501316 to BS EN 607 (PVC-U eaves gutters), BS EN 12200-1 and BS EN 1462 (brackets); MiniFlo gutter and the painted Cast Iron style range are excluded from the Kitemark.

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19. supplier figure RN-8FKEMB

    Geberit

    Manufacturer catalogue data for a Duofix installation frame for a wall hung WC. Frame height is 112 cm, with 82 cm and 98 cm versions also listed, and the frame carries an Alpha concealed cistern 12 cm deep. Flush volume is 6 litres full and 3 litres reduced on this model, with 5.8 / 3 litre variants across the rest of the range, which is the number that matters for a water meter. Operating flow pressure range is 0.1 to 10 bar. The WC connection set is 90 mm diameter with a 90 degree PE-HD connection bend and a PE-HD adaptor socket stepping 90 mm up to 110 mm, so the frame connects into standard 110 mm soil pipe. Actuation is via an Alpha01 dual flush plate in round or square. Geberit states the Alpha cisterns meet EN 14055 Class II and are insulated against condensation.

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20. supplier figure RN-9Q5MDN

    Glazing Vision Ltd

    Glazing Vision X-Vent AOV (automatic opening vent) rooflight for smoke ventilation: span fixed at 1400mm minimum and maximum. Minimum upstand pitch 3 degrees, maximum 5 degrees, with at least 5 degrees recommended, so it demands a nearly flat kerb. Security Rating A requires an inner pane of at least 8.8mm PVB laminated glass; Rating B requires at least 9.5mm ionomer laminated glass.

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21. supplier figure RN-VB70CN

    Gledhill

    Manufacturer product guide with the standing heat loss figures that decide the real cost of an oversized cylinder. Across the StainlessLite Plus range the actual capacities are 91, 119, 148, 178, 208, 248 and 287 litres against nominal 90 to 300 litre labels. Standing heat loss is 32, 39, 47, 55, 62, 74 and 86 watts respectively, or 0.77, 0.94, 1.13, 1.32, 1.49, 1.78 and 2.06 kWh per 24 hours, so a 300 litre cylinder wastes nearly three times as much as a 90 litre one every day of the year. Declared efficiency is 37 per cent on most sizes and 38 per cent on the largest. Height runs 764mm at the smallest to 1990mm at the largest, all on a 550mm diameter shell. Empty weights are 18, 21, 25, 28, 32, 36 and 41 kg. Back-up is a 3 kW Incoloy 825 on-peak immersion, supplied with a 90 degree elbow and drain valve. Gledhill states the high efficiency corrugated coil gives faster reheat than a plain coil, and that only the 250, 300 and 400 litre indirect models come with an additional off-peak immersion.

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22. supplier figure RN-BGXKQB

    Gledhill

    Manufacturer installation data giving the pressure settings that define a safe unvented cylinder installation. The pressure reducing valve is 12 bar on a 22 mm compression connection, the operating pressure (PRV setting) is 3 bar and the expansion vessel charge pressure is 3 bar on a 3/4 inch BSPM connection. The maximum design pressure on the drinking water side is 4.5 bar on a 15 mm compression connection. The temperature and pressure relief valve opens at 6 bar on a 1/2 inch BSPM connection. Maximum working pressure is 3 bar for the heat pump heat exchanger and 6 bar for the solar heat exchanger. Gledhill states the cylinder must be installed by a competent person as defined by the relevant regulations, with compliance in Northern Ireland via Technical Booklet P5 and a Competent Person Self Certification route, and that the expansion vessel needs regular routine checks. This is the source for why an unvented cylinder is notifiable work and needs an annual service.

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23. supplier figure RN-18T6C4

    Glow-worm

    Manufacturer specification for the Energy combi range at 25, 30 and 35 kW. Domestic hot water flow rate at a 35C rise is 12.1, 14.2 and 16.5 l/min. PCDB seasonal efficiency is 89.2 per cent on all three, which is the SAP figure rather than the higher ErP headline number, and worth quoting when a note explains why a boiler labelled 94 per cent does not deliver 94 per cent in a real house. Boiler dimensions are 700 x 390 x 280 mm (H x W x D) on all three sizes, small enough for a standard kitchen wall cupboard. A 7 year guarantee is free as standard with an option to extend to 10 years, but only when registered through myREWARDS with a Glow-worm Power Filter, and the extension excludes the 35 kW model.

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24. supplier figure RN-K4NZ81

    Grant UK

    The clearest published demonstration that heat pump efficiency collapses as flow temperature rises. For the Aerona3 R32 range at 6, 10, 13 and 17 kW: heating capacity to BS EN 14511 at air 7C / water 35C is 6.92, 11.1, 13.6 and 18.0 kW with COP 4.91, 5.28, 5.25 and 4.79, and SCOP in average climate conditions at 35C of 4.61, 5.20, 5.40 and 4.54. The same units at air 7C / water 55C give heating capacity 6.24, 10.5, 11.4 and 15.3 kW with COP 3.04, 3.12, 3.23 and 3.15, and SCOP to BS EN 14825 of 3.29, 3.47, 3.72 and 3.57. So moving the flow temperature from 35C to 55C costs roughly a third of the efficiency. Sound power at 1 metre externally is 65.2, 64, 60.8 and 61.6 dB(A) and sound pressure 54.2, 53, 49.8 and 50.6 dB(A), the figures a permitted development noise assessment turns on. Refrigerant is R32. A 7 year guarantee applies when installed by a Grant G1 installer.

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25. supplier figure RN-EKRNUL

    Grant UK

    Manufacturer range page listing the four Aerona3 R32 inverter driven monobloc models at 6 kW, 10 kW, 13 kW and 17 kW, each compared on SCOP at 35C water, SCOP at 55C water, and separate ErP ratings for 35C and 55C water. The fact that the manufacturer publishes two different ErP ratings for the same unit is the point: the label depends entirely on the flow temperature the system is designed around. Refrigerant is R32. A 7 year guarantee applies when installed by a Grant G1 installer, subject to terms.

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26. supplier figure RN-A1CDWM

    Hager

    Manufacturer guidance on matching a consumer unit to the incoming supply. A consumer unit with a rated current of 100A (InA) fitted with two 100A RCCBs (Inc) can be installed in any single phase application up to 100A. The rule Hager states is that the rated current of the switch or RCCB declared by the assembly manufacturer must not be less than the rating of the upstream overcurrent protective device, which in a domestic installation is typically the 100A service cut-out fuse. This is the check that decides whether an existing board is legitimately rated for the incoming supply.

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27. supplier figure RN-FIYSY1

    Hager

    Manufacturer datasheet for a domestic consumer unit, with the electrical ratings a rewire or board change turns on. Rated current of the assembly (InA) is 100A at 230V a.c. 50 Hz, rated insulation voltage (Ui) 320V, rated impulse withstand voltage (Uimp) 4kV, and rated conditional short circuit current (Icc) 16 kA rms at 250V and power factor 0.6 under Annex ZB. Outgoing circuit ratings are MCB 6A to 63A, RCBO ADA1 series 40A to 45A and RCBO ADA3 series 6A to 32A. Boards are supplied 8 way, 10 way, 14 way and split 6+10 way, all with a 100A main switch, two 100A 30 mA Type A RCCBs and a factory fitted Type 2 SPD. Hager references Regulation 411.3.3 for 30 mA RCD additional protection and Regulation 531.3.3 on selecting the appropriate RCD type, noting Type A RCCBs detect a wider range of fault currents. Using 100A RCCBs lets the board be installed behind any rating of cut out fuse, 60A, 80A or 100A. A quick release clip allows an MCB or RCBO to be removed with the busbar still in place.

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28. supplier figure RN-YHTQW5

    Heatrae Sadia

    Manufacturer data for the Megaflo Eco indirect unvented cylinder. Nominal capacities are 70, 125, 145, 170, 210, 250 and 300 litres. Insulation is 60mm thick on every size. The immersion heater is 1 x 3 kW on all sizes. Empty weights are 25, 31, 35, 39, 43, 50 and 58 kg, but full weights are 125, 180, 204, 233, 253, 300 and 358 kg, which is the figure that decides whether a floor or an airing cupboard base can take it. Standing heat loss runs 332.15 kWh/year at 70 litres up to 616.85 kWh/year at 300 litres, so an oversized cylinder is a permanent standing cost. Maximum flow at 3 bar is 76 l/min across the range. The cylinder has an insulated temperature and pressure relief valve.

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29. supplier figure RN-ARDIJG

    Ideal Heating

    Manufacturer product page for a system boiler range supplied at 15, 18, 24 and 30 kW. The specification table is published as central heating output in kW minimum and maximum at a 70C mean and at a 40C mean, the second figure being the one that applies to a low temperature system, alongside SEDBUK ratings on both the 2005 and the 2009/2012 scales. NOx emissions are Class 6, the cleanest band. Separate ErP energy labels are published per output size. Warranty is 10 years parts and labour, conditional on registering within 30 days of installation and having the boiler serviced annually, which is the condition that quietly voids most long boiler guarantees.

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30. supplier figure RN-M0GJ89

    John Guest (RWC)

    Manufacturer technical guide for plastic push fit plumbing, with the ratings that decide where it can and cannot be used. 15mm x 1.5mm barrier PE-X to BS 7291-3:2010 Class S and 15mm x 1.5mm barrier PB to BS 7291-2:2010 Class S are both rated 12.5 bar at 20C, 4 bar at 82C and 3 bar at 92C. The pipe can withstand 114C intermittently for short periods, which is the boiler malfunction case, but Speedfit must not be used on an uncontrolled heat source. Application ratings are 12 bar at 20C for cold water, 3 bar at 82C normal working for central heating with a 95C maximum and 114C short term, and 6 bar at 65C for hot water including unvented cylinders. Speedfit PEM fittings and PEX and polybutylene barrier pipe are Kitemarked to BS 7291 Parts 1, 2 and 3 Class S under licence KM39767. The pipe is built in 5 layers with a blue oxygen barrier at the centre to stop air ingress and reduce corrosion of metal components. Barrier pipe is available in 10, 15, 22 and 28mm. Bend radius for 15mm pipe is 29mm minimum. System testing is a pressure test to 1.5 times working pressure for 10 minutes. Pipe run at 20 to 82C can sag between clip fixings, and PEX or copper fittings must not be buried in ground or soil.

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31. supplier figure RN-XVF0CX

    Marley Alutec

    Marley Alutec Evolve aluminium rainwater product selector, flow rates from physical tests to BS EN 12056-3, maximum roof area quoted per downpipe. Half Round 120mm with 63mm round downpipe: 1.8 l/s, 87 m2. Deepflow 125mm with traditional or flush-fit 76mm round downpipe: 4.9 l/s, 232 m2. Box 130 x 85mm: 6.0 l/s and 286 m2 with a 76mm round downpipe, rising to 7.0 l/s and 333 m2 with a 72 x 72mm square downpipe. Ogee 130 x 95mm: same, 6.0 l/s / 286 m2 with 76mm round and 7.0 l/s / 333 m2 with 72 x 72mm square. Aluminium is stated as over 65% lighter than cast iron with a life expectancy of 50 years or more, and the brochure notes flow capacity improves marginally when the gutter is laid to a 1:600 fall. 24 standard colours including Heritage Black.

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32. supplier figure RN-ZRTNMD

    Marley Ltd

    Marley universal roof ventilation tile: provides 15,000 mm2 of ventilation area, minimum roof pitch 20 degrees, available in three colours. Suitable for natural ventilation, soil pipe (SVP) ventilation and mechanical (extract) ventilation terminations.

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33. supplier figure RN-W5SUAI

    Mitsubishi Electric

    Manufacturer product information for the Ecodan monobloc range, covering outputs from 5 kW through to 84 kW. SCOP is 4.03, 4.01, 4.06, 3.87 and 3.87 across the domestic sizes at the low temperature application, dropping to 3.17, 3.18, 3.11, 3.12 and 3.12 at the higher flow temperature. Heating capacity at A-3/W35, meaning -3C outdoor air and a 35C flow, is 4.8, 8.3, 11.0, 14.0 and 14.0 kW with power inputs of 1.63, 2.96, 3.65, 4.81 and 4.81 kW, giving COPs of 2.95, 2.80, 3.01, 2.91 and 2.91. Those A-3 figures are the honest design day numbers, well below the headline SCOP. Operating ambient range widens with unit size from -15 to +35C, through -20 to +35C, to -25 to +35C. Supply is single phase with a low starting current, with three phase available on the 14 kW.

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34. supplier figure RN-6J21YL

    Mitsubishi Electric

    Manufacturer data sheet for the 4 kW QUHZ-W40VA Ecodan CO2 (R744) monobloc paired with the EHPT20Q-VM2EA thermal store. SCOP is 2.90 with an ErP rating of A for the large tapping profile and a water heating efficiency of 129 per cent. Heating capacity is 4.32 kW with a power input of 2.18 kW and a COP of 3.00, measured at an outdoor temperature of -3C dry bulb and -4C wet bulb with an outlet water temperature of 55C and inlet 47C, which is a high flow temperature and explains the modest SCOP. Outdoor unit sound pressure at 1m is 43 dBA and sound power 53 dBA tested to BS EN 12102; the indoor thermal store is 30 dBA and 40 dBA. Operating ambient range is -15 to +35C. Water pipework is 15mm with a flow rate of 3 to 8 l/min and a minimum flow of 1.3 l/min. The thermal store holds 200 litres nominal, runs DHW at 40-70C and space heating at 25-60C, has an 18 litre primary expansion vessel charged to 1 bar, two 3 bar pressure relief valves and an 85C manual reset thermostat. Store dimensions are 1600mm high by 595mm wide by 680mm deep, weighing 77 kg empty and 283 kg full, which is the figure that decides whether an upstairs floor needs checking. Supply is 220-240V single phase 50Hz.

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35. supplier figure RN-11ROLC

    Mitsubishi Electric

    Manufacturer page for the R290 propane Ecodan monobloc. Rated A+++ for heating efficiency at a 35C flow temperature, on the A+++ to D scale, and capable of flow temperatures up to 75C. The R290 refrigerant has a global warming potential of 0.02 as stated by the manufacturer. The 75C capability is the specification that decides whether existing radiators sized for a gas boiler can be reused rather than replaced.

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36. supplier figure RN-7Z07S0

    NIBE

    Manufacturer specification for the F2040 range in four sizes. SCOP to EN 14825 in average climate is 4.8, 4.4, 4.4 and 4.5 at a 35C supply and 3.5, 3.3, 3.4 and 3.4 at 55C. In cold climate the same units give 3.7, 3.6, 3.6 and 3.7 at 35C and 3.0, 2.8, 2.9 and 2.9 at 55C. Pdesignh in average climate is 4.8, 8.2, 11.5 and 14.5 kW at 35C and 5.3, 7.0, 10.0 and 14.0 kW at 55C, which is the sizing figure a heat loss calculation is matched against. Efficiency class on the package label is A+++ at 35C and A++ at 55C, and hot water class is A on the XL and XXL tapping profiles. The heat pump works down to an outdoor temperature of -20C while still supplying up to 58C flow. The consistent pattern across the table, roughly a quarter of the efficiency lost between 35C and 55C, is the reason emitter sizing matters more than unit choice.

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37. supplier figure RN-6HKUH5

    NIBE

    Manufacturer specification for the NIBE S2125-8 and S2125-12. SCOP to EN 14825 in average climate is 5.00 at 35C and 3.70 or 3.80 at 55C; in cold climate it is 4.10 or 4.20 at 35C and 3.20 or 3.40 at 55C. Pdesignh in average climate is 5.33 kW at 35C and 5.30 kW at 55C for the -8, and 6.80 and 7.60 kW for the -12. Nominal heat capacity and COP at 7/35 to EN 14511 is 3.15 kW / 5.18 for the -8 and 3.67 kW / 5.21 for the -12. Product and system efficiency class at 35/55C is A+++ and hot water class is A on the XL tapping profile. Sound power (LWA) to EN 12102 at 7/45 is 49 dB(A). Working range reaches a 75C supply temperature, and it still delivers up to 65C at an outdoor temperature of -25C, which is the answer to the claim that heat pumps stop working in cold weather. Unit dimensions are 1070mm high by 1130mm wide by 820mm deep.

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38. supplier figure RN-639M7X

    Nuaire

    Manufacturer specification for the Drimaster-Eco loft mounted positive input ventilation range. The unit draws air through filters and inputs it at ceiling level. Specific fan power is 0.17 watts per l/s of airflow excluding the heater. The optional high duty boost setting provides an airflow rate of 70 l/s. The DRI-ECO-HEAT-HC includes a 400 W heating element fitted at the diffuser to temper incoming air and mitigate draughts, and an internal temperature sensor that raises airflow when the loft warms up and drops the unit to standby (no airflow) when loft temperature becomes excessive. Filter area is 0.47 m2 with a 5 year typical maintenance period. Unit weight is 3.5 kg with a 1 kg diffuser and 2 kg for the heated variant assembly. Supplied with 2 metres of flexible ducting, connectors and a pre-wired power supply; the heated version needs a fused spur and 3 core mains. Warranty is 7 years, 1 year parts and labour. Optional 2 or 4 button remote switches and a remote CO2 sensor that boosts the fan above a set point.

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39. supplier figure RN-KNQCIN

    Salamander Pumps

    Manufacturer data for the CT Force 15PT twin ended positive head brass shower pump. Rated 1.5 bar, it delivers 1.1 bar at 8 lpm and 1.3 bar in the intermediate condition against a 1.5 bar nominal rating, so the headline bar figure is not what arrives at the shower. Power draw is 457 watts, maximum water temperature 60C, weight 5 kg, warranty 5 years. The critical definition the manufacturer gives: a gravity fed system is positive head if at least 2 l/min flows from gravity alone, and negative head if it is less; a positive head pump such as this one needs a minimum flow of 2 l/min through the pumped outlet before it will activate, and installing it on a negative head system means it may not work. Every outlet to be pumped must be tested for that 2 l/min. The universal (TU) models are the negative head variants.

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40. supplier figure RN-YKIRZ3

    Screwfix

    the retail price Screwfix publishes for Prysmian 6943X Black 3-Core 2.5mm2 Armoured Cable 10m Coil, which is the supply figure the cost book records for this item

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