Residential Mass Roll-out - Eskom€¦ · CFL/LED downlights Showerheads/regulator Geyser controller Set timers on pool pumps Possible future Standard Products options: Dual geyser

Residential Mass Roll-out Technical Approval Process,

Technical Specification And

Installation Guideline

Memorandum Number: GT-IDM/01-2011

Investigation into SP Mass Roll Out Page 1 of 17

Table of Contents 1. Introduction ....................................................................................................................................... 2 2. Identified Technologies Available .................................................................................................... 2

2.1 Technologies for Low Income Residential ........................................................................................ 2 2.2 Technologies for Medium to High Income Residential .................................................................... 2

3. Requirements Per Supported Technology ......................................................................................... 3 3.1 Interior Lighting ................................................................................................................................ 4 3.2 Efficient Shower and Taps ................................................................................................................ 6 3.3 Pool Timer Settings ........................................................................................................................... 7 3.4 Geyser Blanket and Pipe Insulation .................................................................................................. 8

4. Programme Product Approval Process .............................................................................................. 9 4.1 Process............................................................................................................................................... 9 4.2 Sample Submission ........................................................................................................................... 9 4.3 Sample Returns: .............................................................................................................................. 10

5. Installation Guideline ...................................................................................................................... 11 5.1 Load Control Timer for Geyser and/or Air conditioner and/or Under Floor Heating ..................... 11 5.2 Lighting ........................................................................................................................................... 11 5.3 Efficient Shower and Taps .............................................................................................................. 14 5.4 Pool Timer Settings ......................................................................................................................... 14



1. Introduction

A programme has been developed for implementation targeting the residential market in terms of mass roll out of energy efficient and demand management technologies. The ultimate objective of this programme is to address and alleviate the constraints on the grid during peak period, focusing on the evening peak. The main contributor to the evening peak is the residential sector.

2. Identified Technologies Available

The following technologies have been identified for immediate implementation. A list of technologies for future consideration is also provided.

2.1 Technologies for Low Income Residential

Technologies to be included in Standard Product mass roll out:

Geyser blanket (incl. hot water pipe insulation)

CFLs

Showerheads/regulator

Geyser controller

Possible future technologies for consideration where customer acceptance study is required prior to implementation:

Induction stove (incl. pot(s))

Microwaves

2.2 Technologies for Medium to High Income Residential

Technologies to be included in Standard Product mass roll out:

Geyser blanket (incl. hot water pipe insulation)

CFLs (outside lights as well as general lamps inside)

CFL/LED downlights

Showerheads/regulator

Geyser controller

Set timers on pool pumps

Possible future Standard Products options:

Dual geyser element

Solar air conditioner

AC Inverter technology for split and stand-alone units

Energy Efficient or Solar Pool Pumps

Electric blanket/ Wall Mounted Heaters

Thermostat controlled heaters

Gas heaters

Induction cooker

Gas stove hob

Pool cover

Roof insulation in living areas

White appliances

PC monitor replacement with LCD



3. Requirements Per Supported Technology

After consultation with Standard Product mass roll out team, the technologies for implementation has been short listed to the following:

Load Control Timer

Interior Lighting

Shower regulator or efficient head

Geyser Blanket

Standards to be taken into account for energy efficiency in buildings include:

SANS 204-1:2008: Energy efficiency in buildings - Part 1: General requirements

SANS 10400-A: The application of the National Building Regulations – Part A: General principles and requirements

SANS 10400-O: The application of the National Building Regulations – Part O: Lighting and ventilation

a. Load Control Timer Functional and Technical Specifications

Easily programmable with daily or weekly settings

Timer function and pre-set according to Eskom peak times (Timers to be

locked out between 6 am – 8am & 6pm – 8pm weekdays: without override)

Timers must be able to randomly switch on within a maximum of 30 minutes

post Eskom peak periods to cater for comeback loads.

Small in size and be able to be installed in distribution board - DIN and MINI

rail mountable

If no space available in distribution board, an earthed, double insulated,

external surface mounted enclosure is required

Timer must have a minimum of 4 on/off time settings per day

Optional weekend mode as household patterns change over weekends

Must be pre-set not to come on during Eskom peak periods

Must have a battery back-up system in case of power outage, in order to

keep set time for up to 200 hours. Battery life span must be a minimum of 3

years

Warrantee required for minimum 1 year

Limits drift to 5 minutes per year, with optional 50 Hz checksum

Minimum load capacity of 16A.

Timing control unit to be covered by a protective cover to avoid tampering

or accidental changes to timing algorithm

Clear and easy to use instruction pamphlet to accompany each unit

Operating temperature : -20 to 55 degrees centigrade, although +70

degrees centigrade will ensure longer life

b. Standards

Standard/Specification Description

VC 8036 Compulsory specification for circuit-breakers



SANS 10254:2004 The installation, maintenance, replacement and repair of fixed electric storage water heating systems

SANS 181:2004 Thermostats for electric storage water heaters

SABS 60335-2-21 Safety of household and similar electrical appliances - Part 2: Particular requirements for storage water heaters

SANS 60730-2-7 Automatic electrical controls for household and similar use Part 2-7: Particular requirements for timers and time switches

c. Notes

Certificate of Compliance required

Potential risk if current wiring not compliant

3.1 Interior Lighting

a. Savings

Replacement Initial (W) Replaced

(W)

Savings

(W)

Incandescent Lamps with CFL (incl.

spot lamps) 100 20 80


spot lamps) 60 14 46


spot lamps and candle lamps) 40 9 31

Dichroic Downlight 50W 12V with

35W 12V Dichroic Downlight 50 35 15

Dichroic Downlight 50W (12V or

230V) with 7W 230V CFL Downlight 50 7 43


7W 230V CFL Downlight 35 7 28




230V) with 9W 230V CFL Downlight 50 9 41






230V) with 11W 230V CFL

Downlight

50 11 39







b. Functional Specifications

Reduction in energy consumption without effecting the current light levels

Certificate of Compliance (required if light wiring, transformers and or

dimming hardware is changed to ensure LED downlighter compatibility)

Disposal certificates required

c. Standards


240-41679717 Downlighter Lamp Technical Specification for General Lighting Services

VC 9087 Compulsory specification for the lamp control gear

VC 9091 Compulsory specification for single-capped fluorescent lamps

SANS 215 Limits and methods of measurement of radio disturbance characteristics of electrical lighting and similar equipment (CISPR 15)

SANS 61199 Single-capped fluorescent lamps - Safety specifications

SANS 61347-2-3 Lamp control gear Part 2-3: Particular requirements for A.C. supplied electronic ballasts for fluorescent lamps

SANS 61347-2-8 Lamp control gear Part 2-8: Particular requirements for ballasts for fluorescent lamps

SANS 60901 Single-capped fluorescent lamps - Performance specifications.

SANS 60968 Self-ballasted lamps for general lighting services - Safety requirements

SANS 60969 Self-ballasted lamps for general lighting services – Performance requirements.

SANS 50285 Energy efficiency of electric lamps for household use – Measurement methods.

SANS 62031 LED modules for general lighting – Safety specifications



IEC/PAS 62612 Self-ballasted LED-lamps for general lighting services - performance requirements. Also see exemptions allowed by Eskom.

d. Notes

Disposal certificates required

3.2 Efficient Shower and Taps

a. Savings

M&V reports


Taps to be fitted with flow regulator.

Minimum flow rate for shower 6.5 litres per minute and maximum flow rate

11 litres per minute.

c. Standards


Internal Eskom Specification

Eskom DSM Technical Specification for Energy and Water Saving Showerheads

d. Notes:

Water pressure has an impact on resulting flow rate



3.3 Pool Timer Settings

a. Savings

The energy consumption is dependent on the size of the pool, the size of

the motor and current timer settings for the pool pump.

The actual savings will be calculated and determined from the claim forms

returned.


Pre-programmed timer settings as per Eskom’s peak period.

Maximum 10A inductive load capacity

Timers to be configured to reduce pump operation time to the minimum

number of hours required to filter the water volume according to:

Pool Volume (litres) Recommended Running Time

9 000 3.0

12 000 4.5

19 200 6.0

30 000 7.0

36 000 8.5

c. Standards


SANS 60335-2-41:2010 IEC 60335-2-41:2010

Household and similar electrical appliances — Safety Part 2-41: Particular requirements for pumps

SANS 60669-1:2007 Switches for household and similar fixed-electrical installations



3.4 Geyser Blanket and Pipe Insulation

a. Savings

Demand impact approximately 0.065kW to 0.075kW per geyser blanket, but is

greatly dependent on correct installation as well as temperature of geyser

setting and ambient temperature.

b. Standards

Standard/Specification

Description

SANS 428 Fire performance classification of thermal insulated building envelope systems

SANS 1381-1:2007 Materials for thermal insulation of buildings Part 1: Fibre thermal insulation mats

ASTM C 167 Test method for thickness and density of blanket or batt thermal insulations

ISO 8144-1

Thermal insulation – Mineral wool mats for ventilated roof spaces Part 1: Specification for applications with restricted ventilation

SANS 12574-2:2010 Thermal insulation — Cellulose-fibre loose-fill for horizontal applications in ventilated roof Spaces Part 2: Principal responsibilities of installers

SANS 10177-1:2005 Fire testing of materials, components and elements used in buildings Part 1 to 11

c. Notes:

Rebate or discount voucher to be provided

Possible collaboration programme with Thermal Insulation Association of

Southern Africa (TIASA)

Insurance required from suppliers/installers to cover risk of falling

through ceiling.

Must be installed correctly as under performance will be experienced, as

were the case in M&V reports above.

Geyser blanket protected against fungal growth.

Durable binding material to be supplied as part of the installation kit.



4. Programme Product Approval Process

4.1 Process Eskom requires compliance with a minimum technical specification, in line with local or international product standards, per product proposed. The technical specification guidelines can be viewed at www.eskom.co.za/idm. According to the specification a product needs to comply with the following criteria:

Technologies need comply with SANS standards, or IEC standards. In the event that no such standards exist, Eskom in conjunction with local authorities will either adopt an international standard or publish a relevant standard in the interim, in accordance with best practise.

Standards issued by different standardisation bodies (for example ANSI, EN,etc) that can be proved by the applicant to be technically identical to a South African National Standard, shall be accepted in conjunction with the proof of conformity with such a standard.

Eskom will only contract with the Project Developer for approved technology.

Project Developers need to provide a sample of each product for verification with the relevant test reports.

4.2 Sample Submission

Samples to be delivered in conjunction with the proposal submission in a sealed box/s, to Eskom Tender Office, with external demarcation as follows:

Company Name

Contact Person

Contact Details

Total Number of Samples

The sealed sample box must contain one sample per product and all relevant supporting technical information listed below:

Technical specifications of the product.

Copy of Letter of Authority (LOA) issued by the Regulator, where applicable.



Copy of a valid certificate of IECEE conformity issued by a member of the IEC

CB Scheme; or a copy of a valid test certificate issues by an independent

recognised test laboratory.

Test reports on which the above certificates were issued.

Products for which no technical information as stipulated above exist, must be indicated by the Project Developer. The following format can be utilised:

Company Name: <ABC Trading>

Product Type & Brand

Number of Samples Technical information exist and attached?

1 <Phillips LED 5W GU10 Downlighter>

<1> <Yes or No>

2

3

The tender office will immediately audit the sample box and confirm its contents in line with the above table. Once complete, the tenderer must collect his/her acknowledgement receipt.

4.3 Sample Returns:

Applicable samples will be made available for collection from a specified venue, upon notification given by Eskom from:

Eskom Research and Innovation Centre Lower Germiston Road Rosherville



5. Installation Guideline

5.1 Load Control Timer for Geyser and/or Air conditioner and/or Under Floor Heating

A time switch is to be installed in the distribution board, to control the hot water load (geyser). If this load is already controlled or energy efficient technologies have replaced the geyser and an air conditioner or under floor heating load is present in the house, it is recommended for the time switch to be installed on these cooling and heating loads.

Requirements:

Installation must be in accordance to SANS10142-1 (The wiring of premises - Part 1: Low-voltage installations)

A certificate of compliance (CoC) must be issued for the installation of the timer switch.

Must be installed by a qualified electrician

Isolate the electrical supply before installation, therefore the power must be switched off before installation commence. Test with a multi-meter before any work is done on the Electrical supply. A wiring diagram will be provided with the timer switch, which is typically the following. Instructions are supplied with the digital timer switch for installation and commissioning.

5.2 Lighting

Luminaires for exterior use may be either decorative or functional. In both cases their construction and the materials used will generally be different to those used for interior purposes. They will have to be designed to be both dust and weather proof. The provision of lighting for exterior situations covers a large range of activities. Exterior lighting in the residential sector is primarily for safety. Common terminology used in lighting are the following:

Lumen The unit of light flux radiated by a light source – the unit of light.

Efficacy Ratio of light output to the electrical power consumed by the lamp, expressed as

L/W.

Colour Temperature Temperature value ascribed to a light source based on the absolute system, expressed in degrees K (Kelvin)

Supply

N

L

L Timer Switch

N L Load

Appliance

Neutral Bar

Distribution board



Colour Rendering A scale system of 0 - 100 as a measure of the ability of a light source to reproduce all colours faithfully, (100 = perfect).

Colour Appearance Any of 3 categories, cool, intermediate (or neutral) or warm, which describes the overall impression of the light colour.

Every home is special; it has its own architectural style, its own feeling. Homes are unique and so are the owners. Therefore, the retrofit of lamps with energy efficient replacements must not compromise light levels nor colour rendering or appearance. The following needs to be considered: - Colour (temperature, rendering and appearance) of current lamp. Colour and light

attracts the eye and therefore replacement selection is imperative.

- Lumens of current lamp. During the lifetime of any light source, the lumen output is

not constant and will deteriorate during its lifetime of use. The rate of deterioration

is different for the various types of lamps. This must be taken into consideration

when replacing currently installed lamp with a new energy efficient lamp.

- Voltage rating of lamp. This is specifically applicable to downlights, where 12V and

220V AC lamps are common. If a 12V lamp is replaced by a 220V lamp, it is

imperative to disconnect the transformer in a safe manner as per SANS10142-1.

- Dimmable and not dimmable lamps. In the case where dimmer units are installed,

it is imperative to either ensure that the lamps are replaced with dimmable lamps,

or the option of disconnecting the dimmer switch is discussed with the home

owner. The second option must be recorded on the return sheet and homeowner

signature must be evident next to the recording.

Some comparisons between the various technologies are tabled below.



INCANDESCENT LAMPS COMPARED TO COMPACT FLUORESCENT LAMPS

Incandescent Lamps Compact Fluorescent Lamps

Watts Light output lumens

Life hours

Efficacy Lm/W


Life hours Efficacy Lm/W

25 220 1000 8.8 5 240 6000 48.0

40 430 1000 10.8

7 400 6000 to 12000

57.1

60 730 1000 12.2

11 600 6000 to 15000

54.6

75 960 1000 12.8

15 900 6000 to 15000

60.0

100 1380 1000 13.8

20 1200 6000 to 15000

60.0

150 2220 1000 14.8

23 1500 6000 to 15000

65.2

42 3200 15000 76.2

85 6500 15000 76.5

120 7500 18000 62.5

320 23000 18000 63.9

FLUORESCENT TUBULAR LAMPS

T12 - 38 mm Fluorescent Lamps - switch start T8 - 26 mm Fluorescent Lamps - switch start


Life hours

Efficacy Lm/W lamp only

Efficacy Lm/W lamp + control gear


Life hours

Efficacy Lm/W


20 1150 8000 57.5 44.2 18 1350 12000 75.0 56.3

40 2800 8000 70.0 59.6 36 3200 12000 88.9 78.0

65 4800 8000 73.8 62.3 58 5200 12000 89.7 81.3

75 6300 8000 84.0 63.0 58 5200 12000 89.7 81.3

30 2400 12000 80.0 66.7

T8 - 26 mm Fluorescent Lamps electronic control gear A2

T5 - 16 mm Fluorescent Lamps electronic control gear


Life hours

Efficacy Lm/W lamp only



Life hours

Efficacy Lm/W


18 1300 16000 72.2 68.4 14 1270 16000 90.7 66.8

36 3200 16000 88.9 86.5 21 1970 16000 93.8 75.8

58 5000 16000 86.2 90.9 28 2750 16000 98.2 80.9

55 4800 16000 87.3 76.2 35 3430 16000 98.0 54.4

30 2050 16000 68.3 73.2 39 3250 16000 83.3 56.0

54 4650 16000 86.1 73.8

80 6510 16000 81.4 74.8



5.3 Efficient Shower and Taps The flow rate of the current showerhead needs to be measured and recorded on the return sheet. The method for testing the flow rate is as follows: You will need: - - a 20 litre bucket - a 1 litre measuring jug - a timer/watch

Instructions: - 1) Turn on your shower to the maximum flow possible. 2) Hold a bucket under the flowing showerhead catching every drop for 60 seconds - you will need a timer of some description - a watch with a second hand will do. 3) As soon as 60 seconds is up, remove the bucket from under the showerhead and turn off the shower. 4) Using a one litre measuring jug, measure how many litres of water you managed to capture in your bucket. This will indicate the flow rate in litres per minute. 5) If the flow rate is over 12 litres per minute, fit in the flow regulator provided into your existing showerhead and follow steps 1 to 4. 6) Record reading taken and compare results – make sure that the flow rate has been reduced by a minimum of 3 litres per minute and falls within the prescribed range of 6.5 – 11 litres / minute.

The majority of showerheads have a female BSP pipe fitting which is fitted to the stand pipe by a screw connection. The existing showerhead can therefore be removed by turning the extension piece above the showerhead in an anti-clockwise direction. If too tight, water pump pliers or shifting spanner can be used. The new efficient showerhead or regulator can then be fitted.

5.4 Pool Timer Settings The main function of a pool pump is to cleanse the water through a circulation method where dirt and debris are removed through a sand media and the clean water returned to the pool. Depending upon the design and function, a pool pump can have different power levels and different speeds. The capability level of a pool pump can tell you how much water it can circulate. Although it is difficult to note down the pump's rotational capacity, in a residential pool a pump usually circulates all the water in ten hours or less. A pool pump also ensures that all the chemicals mixed in the water are effective in killing germs and thus maintains the hygiene of the pool. Automated pool pumps spread the chemicals across the water. Therefore, pool pumps do not require running 24 hours a day. Below is a guide for recommended running time for various pool sizes.

Pool Volume (litres) Recommended Running Time

9 000 3.0

12 000 4.5

19 200 6.0

30 000 7.0



36 000 8.5

Documents

Residential Mass Roll-out - Eskom€¦ · CFL/LED downlights Showerheads/regulator Geyser controller Set timers on pool pumps Possible future Standard Products options: Dual geyser