energimart pv water heating installation guide

PHOTOVOLTAIC WATER HEATING

ENERGI MARTYour Energy Solution Experts


INSTALLATION GUIDE

www.energimart.co.za

IMPORTANT INFORMATION

All heating elements carry a 36 month manufacturers warranty against factory

defects. Energi Mart (Pty) Ltd. warrants that heating elements manufactured by us will

WARRANTY AND EXCLUSION OF LIABILITY

be free of any factory defects for the warranty period.

Should any manufacturing defect be detected within this warranty period, the “goods” can

be returned to us or any authorised representative for replacement.

Energi Mart (Pty) Ltd will not be liable for any defect caused by incorrect installation, negligence

recklessness or malicious behavior and cannot be held liable for any damage resultant of such

conditions or behavior.

Energi Mart (Pty) Ltd will not be liable for any reasonable allowance of wear and tear due to

water quality or installation conditions. Proof of periodic anode replacement needs to accompany

any warranty claim to ensure that necessary precautions have been taken to prevent premature

element or geyser failure.

Energi Mart (Pty) Ltd will not be liable for any consequential damage to any surrounding items,

equipment or structures that may be caused by failure or any natural disaster.

Any claim under this warranty may be subject to restocking charges as allowed by the consumer

protection Act. This warranty will be void if any alteration has been made or in case of any

faulty installation or operation in contradiction to information contained in this document.

Energi Mart (Pty) Ltd will not be liable for any additional costs that may be associated with

returns or replacement under this warranty.

ENERGI MARTYour Energy Solution Experts © Energi Mart (PTY) Ltd.

This manual contains critical information regardingelectrical and mechanical installation and safety

information which you should know before startinginstallation.

The information contained in this manual is based onEnergi Mart’s knowledge and experience, however, the information and suggestions do not constitute a

warranty.

Energi Mart (Pty) Ltd reserves the right to makechanges to the product, specifications, or manual

without prior notice.

PRECAUTIONS REGARDING SOLAR SYSTEM INSTALLATIONS

AC/DC HEATING ELEMENT KIT

Only for use with immersion water heating

© Energi Mart (PTY) Ltd.

AC HEATING ELEMENT

Power Rating (W)

Current (I)

Material

Retrofit

SANS

Type

Supply

2000 Watt

8.7 A

Stainless Steel

Flanged & Screw

514:2009

Immersion

Rated Voltage (V) 230 VAC

AC

Specification

Only for use with immersion water heating

DC HEATING ELEMENT

Power Rating (W)

MAX Current (I)

Material

Retrofit

Control

Type

Supply

480/ 720/ 960

15 A DC

Stainless Steel

Flanged & Screw

DC thermostat

Immersion

MAX Voltage (V) 130 VDC

DC

Specification

Required for DC temperature control

DC BI-METAL THERMOSTAT

NC Temp setting

MAX Current (I)

Type

Retrofit to

Setting

Use

Supply

70 Deg C

15 A DC

Bi-metal

TP Valve

Normally Closed

External

MAX Voltage (V) 130 VDC

DC

Specification


*Teflon coated Stainless steelfor extra durability

AC/DC element

AC Thermostat DC Couple

DC Thermostat

*Pictures for illustrative purposes only and actual products may differ.

PLEASE NOTE: All electrical work should be done by a qualified electrician or industry

professional.

Close cold water supply to geyser, open a hot water faucet, attach hose to geyser drain valve

and drain the geyser.

Ensure that the element wires are not power or under electrical load.

Disconnect electrical wires and thermostat and remove flange and heating element.

Turn off main power before working on any electrical component.

Turn off geyser isolator switch.

Test with multi-meter to ensure power is off before any work.

Turn off geyser circuit breaker in distribution board

Replace with the AC/DC element kit

Tighten the flange to the geyser and ensure proper seal.

Insert the AC and DC thermostats and connect wires as per diagrams in following pages.

Close drain valve and open cold water inlet. Allow air to escape the geyser before closing

any faucets. Wait for a steady flow of water before closing any faucets.

DO NOT SWITCH ON ANY ELECTRICAL SUPPLY BEFORE THE GEYSER HAS FILLED

WITH WATER.

Continue with electrical connections as in the attached diagram before turning on any

electrical supply.

Do not exceed maximum DC thermostat voltage of 130VDC

Do not exceed maximum DC Amperage of 15 A

DC thermostat is compulsory for temperature control and safety

Do not exceed element wattage

PLEASE TAKE CAUTION WHEN WORKING ON THE ROOF

PV INSTALLATION GUIDE

ELEMENT INSTALLATION GUIDE


2 panel installation - 480 - 320 WP (100 - 150 Liter)

3 panel installation - 720 - 780 WP (150 - 200 Liter)

Please ensure the PV panels are appropriately grounded


© Energi Mart (PTY) Ltd.ENERGI MART

Your Energy Solution Experts

AC Timer

Isolator switch

PRESSURE RELEASE VALVE

DC THERMOSTAT

+ -240 - 260 WP

+ -240 - 260 WP

+ -240 - 260 WP

AC THERMOSTAT

Distribution Board

PV PANEL PV PANEL PV PANEL

AC HEATING ELEMENT

DC HEATING ELEMENT

Series Connection (MAX 130VDC 15A)

Earth Wire

PHOTOVOLTAIC CONNECTION DIAGRAM

The connection diagram below serves as a guide for typical installations. All work should be done

by qualified professionals as work on electrical components may cause injury or death.

MAX CONNECTION VOLTAGE FOR PV INSTALLATIONS: 130VDC

MAX INRUSH DC AMPS: 15A

CONNECTION GUIDE (3 panel system)

The DC thermostat allows for a maximum of 130VDC and 15A to be connected to it. Please

calculate the series or parallel voltage and amperage correctly before selecting the appropriate

connection setting.

The DC thermostat disconnects the PV circuit when temperatures in excess of 70DegC are

reached. Connect one wire directly from the PV to the heating element and connect the other

wire to one connection point on the DC thermostat with another wire connected to the second

connection point on the DC thermostat that in turn is connected to the other connection point on

DC heating element.

DC THERMOSTAT

From PV To Element

HOT WATER OUT

DISTRIBUTION BOARD TIMER

PLEASE NOTE: All electrical work should be done by a qualified electrician or industry

professional.

Connect AC Live to connection point labeled (1)

Connect AC Neutral to connection point labeled (2)

Connect element Neutral to connection point (2)

Bridge connection point (1) with connection point (4)

© Energi Mart (PTY) Ltd.ENERGI MART

Your Energy Solution Experts

++

++

L N

L

Element

N

1 2

345

00:00

Connect element Live to connection point labeled (5)

Turn off main power before working on any electrical component

Test with multi-meter to ensure power is off before any work.


CAUTION!

Do not drill holes in frame. Do not cut or modify partsor rails.

Work under dry conditions with dry tools.

Do not stand or step on solar module.

Do not install near flammable gases.

Do not drop or allow objects to fall onto module.

Completely cover solar module with opaque materialswhen wiring to halt production of electricity.

Keep the back side of solar module surfaces free offoreign objects.

Do not use chemicals on solar modules whencleaning.

Do not wear metallic jewelry, which may causeelectrical shock.

Do not touch cable electrical contacts.

Do not expose solar modules to sunlight that isconcentrated with mirrors, lenses or similar means.

Consult local codes and other applicable laws andstatutes concerning required permits and regulationsconcerning installation and inspection requirements.Install solar modules and systems according toapplicable codes.

Product should be installed and maintained byqualified personnel. Keep unauthorized personnelaway from solar modules.

Avoid shadowing cells in order to prevent solar module hot spots and/or reduction in power.

Avoid installing modules and mounting system in high corrosion areas.

Panel orientationThe ideal orientation for any solar panel in the Southern hemisphere is true North facing the equator. The closer the panel is to facing true North, the higher the efficiency of the panel will be in absorbing solar energy.

Angles up to 45 º West or East from North, are still ideal, but after this point the efficiency will be reduced significantly and additional panels may be required or adjustments may have to be made to come closer to true North.

ShadingWith a system orientated to face North, the time period when the solar panel is exposed to the most direct solar radiation is between 10h00 and 16h00. Solar panels with an East bias will achieve a greater gain in morning hours and those with a West bias will do so in the afternoon. Care should be taken to ensure that the solar panels are not subjected to excessive shading from trees or adjacent buildings, particularly between 09h00 and 16h00. Also bear in mind that tree growth could lead to future shading issues. If the installation takes place in summer, it is also important to take into account the lower solar angles in winter, which result in longer shadows.

Tilt AngleIn respect of the optimum angle of inclination for a solar panel, the rule of thumb provides that the latitude of the location is taken and then 10° added thereto. Therefore, a location with latitude of 25° would indicate an optimum collector tilt angle of 35°. The angle of inclination, however, is also flexible and minimal loss of performance occurs byinstalling at lower or higher angles of inclination. Angles lower than 10° would result in build-up of dust, as it is not able to be washed away effectively by rainfall.

During winter periods, the sun follows a lower trajectory through the sky and the ideal tilt isincreased to 15° - 20° above the latitude. As the solar module mountings discussed in thisguide are of a fixed nature, selecting a tilt anglefor optimal efficiency in winter may be beneficial,but will result in reduced efficiency during summer.



1.1. Mount Bearing ProfileThe extruded Aluminum mounting frame has pre-designed profiles for easy attachment of the other mounting components.

1.2. Middle and End ClampsMiddle and end clamps easily fit the available slotprovided by the mounting profiles. End clamps secure the PV panel at the end of the profile andmiddle clamps secure two panels where they join.

1.3. Roof HooksRoof hooks are designed to ease the installation of PV systems on tiled roofing infrastructure. The roof hook simply slips under the roof tile and is fastened to the underlying infrastructure, with the roof tilesplaced over the installed roof hook.

1. MOUNTING ACCESSORIES

1.4. Hanger Bolts + klicktopUsed to affix mounting profiles to corrugated metal or similar roof structures.

The hanger bolt replaces the existing bolt andextends the bolt beyond the roof in order to attach the mounting profile. The unit includesa seal and klicktop attachment for ease ofconnection.

1.5. AlterationsThere are many other connection accessories that can be used for the different installation requirements and can be readily acquired from your local accessories supplier.

2.1. Three Panel SystemThe three panel system requirement is basedon the Solaire Eco Plus 240Wp solar panel and may differ with panel specifications.

The components herein use 40-50mm rangesthat is suitable to the specified panel.

2.1.1. Tiled Roof

Profile: 7m total required split in two parts fortop and bottom mounting.End clamps: 4 x suitable end clampsMiddle clamps: 4 x suitable middle clampsRoof Hook: 6 x Roof hooks with klicktop spreadover distance of mounting profiles.

2.1.2. Corrugated Roof

Profile: 7m total required split in two parts fortop and bottom mounting.End clamps: 4 x suitable end clampsMiddle clamps: 4 x suitable middle clampsHanger Bolts: Minimum 6 x bolts with klicktop spread over distance of mounting profiles.

2.2. Four Panel SystemThe four panel system requirement is basedon the Solaire Eco Plus 240Wp solar panel and may differ with panel specifications.

2.1.1. Tiled Roof

Profile: 8.3m total required split in two parts fortop and bottom mounting. (Requires connector)End clamps: 4 x suitable end clampsMiddle clamps: 6 x suitable middle clampsRoof Hook: 8 x Roof hooks with klicktop spreadover distance of mounting profiles.

2.1.2. Corrugated Roof

Profile: 8.3m total required split in two parts fortop and bottom mounting. (Requires connector)End clamps: 4 x suitable end clampsMiddle clamps: 6 x suitable middle clampsHanger Bolts: Minimum 8 x bolts with klicktop spread over distance of mounting profiles.

2. MOUNTING ACCESSORY REQUIREMENTS

2.3. Schletter componentsThe table below provides the product codesfor the accessories used with the mounting systems.

The suggested components include:

* SoloLight 4m mounting bearing* 40-50mm End & Middle Clamps* Universal roof hook + KlickTop* Hanger bolt + KlickTop* Mount Connector (Solo) (Connects two of the mounting profiles together)


Schletter South Africa - [email protected]

Solaire South Africa - [email protected]

Energi Mart - [email protected]

CONTACT DETAILS

Roof Hook InstallationSelect a tile on the roof to lift and identify a suitable wooden or other mounting fixture to which the roof hook can be fastened.

Once you have identified a suitable mounting fixture, secure the roof hook to the fixture byfastening it with appropriate screws.

Once the roof hook is secured, carefully slide theroof tile over the roof hook and back to its original position, leaving the required part of the roof hookexposed for use.

Once all the required roof hooks have been installed, secure the module bearing profileto the roof hooks.

Insert the end clamps near the end of the module bearing profiles in order to place the first PV panels on it.

Place the PV panel on top of the module module bearing profiles and secure the PV panel by fastening the screw of the end clamp.

Insert the middle clamps and next PV panel and secure the middle clamps by fastening the middle clamp screws. Continue with middle andend clamps until the full array of PV panels areinstalled.

TILED ROOF INSTALLATION

Corrugated Roof InstallationSelect the ideal position to mount the PV panel array and remove existing screwsfrom the roofing structure. Replace the screws with the provided self-tapping screws with attachments.

Tighten the screw above the rubber seal toprevent any leakage and take care not to distort by excessive force.

Once screws with attachments aresecured, attach module bearing profile and secure by fastening thescrews.

Adjust the middle nut to provide desired heightand attach the klicktop if not pre-assembled.

Once the module bearing profile has been secured, insert the end clamps and the first PVpanel and secure it by fastening the end clampscrews, similar to the tiled roof installation.

Insert the middle clamps and following PV Panelsand tighten the middle clamp screws to secure.


CORRUGATED ROOF INSTALLATION




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energimart pv water heating installation guide

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