PHOTOVOLTAIC WATER HEATING INSTALLATION GUIDE

Transcription

1 PHOTOVOLTAIC WATER HEATING INSTALLATION GUIDE

2 IMPORTANT INFORMATION WARRANTY AND EXCLUSION OF LIABILITY All heating elements carry a 18 (eighteen) month manufacturers warranty against factory defects. Energi Mart (Pty) Ltd. warrants that heating elements manufactured by us will 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. PRECAUTIONS REGARDING SOLAR SYSTEM INSTALLATIONS This manual contains critical information regarding electrical and mechanical installation and safety information which you should know before starting installation. The information contained in this manual is based on Energi Mart s knowledge and experience, however, the information and suggestions do not constitute a warranty. Energi Mart (Pty) Ltd reserves the right to make changes to the product, specifications, or manual without prior notice.

3 AC/DC HEATING ELEMENT KIT AC HEATING ELEMENT Only for use with immersion water heating Specification Power Rating (W) 2000 Watt Rated Voltage (V) Current (I) Material Retrofit SANS Type Supply 230 VAC 8.7 A Stainless Steel Flanged & Screw 514:2009 Immersion AC DC HEATING ELEMENT Only for use with immersion water heating Specification Power Rating (W) 480/ 720/ 960 DC BI-METAL THERMOSTAT Required for DC temperature control Specification NC Temp setting 70 Deg C MAX Voltage (V) 130 VDC MAX Voltage (V) 130 VDC MAX Current (I) 15 A DC MAX Current (I) 15 A DC Material Stainless Steel Type Bi-metal Retrofit Flanged & Screw Retrofit to TP Valve Control DC thermostat Setting Normally Closed Type Immersion Use External Supply DC Supply DC

4 ELEMENT INSTALLATION GUIDE PLEASE NOTE: All electrical work should be done by a qualified electrician or industry professional. Turn off main power before working on any electrical component. Turn off geyser circuit breaker in distribution board Turn off geyser isolator switch. Test with multi-meter to ensure power is off before any work. 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. 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. PV INSTALLATION GUIDE PLEASE TAKE CAUTION WHEN WORKING ON THE ROOF 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 ensure the PV panels are appropriately grounded 2 panel installation WP ( Liter) 3 panel installation WP ( Liter)

5 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) Series Connection (MAX 130VDC 15A) WP WP WP PV PANEL PV PANEL PV PANEL AC Timer Distribution Board Earth Wire Isolator switch HOT WATER OUT DC THERMOSTAT AC HEATING ELEMENT DC THERMOSTAT From PV To Element PRESSURE RELEASE VALVE AC THERMOSTAT DC HEATING ELEMENT 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.

6 DISTRIBUTION BOARD TIMER PLEASE NOTE: All electrical work should be done by a qualified electrician or industry professional. Turn off main power before working on any electrical component Test with multi-meter to ensure power is off before any work. 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) Connect element Live to connection point labeled (5) L N : L N Element

7 ! CAUTION Do not drill holes in frame. Do not cut or modify parts or 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 materials when wiring to halt production of electricity. Keep the back side of solar module surfaces free of foreign objects. Do not use chemicals on solar modules when cleaning. Do not wear metallic jewelry, which may cause electrical shock. Do not touch cable electrical contacts. Do not expose solar modules to sunlight that is concentrated with mirrors, lenses or similar means. Consult local codes and other applicable laws and statutes concerning required permits and regulations concerning installation and inspection requirements. Install solar modules and systems according to applicable codes. Product should be installed and maintained by qualified personnel. Keep unauthorized personnel away 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 orientation The 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. Shading With 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 Angle In 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 by installing 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 is increased to above the latitude. As the solar module mountings discussed in this guide are of a fixed nature, selecting a tilt angle for optimal efficiency in winter may be beneficial, but will result in reduced efficiency during summer.

8 1. MOUNTING ACCESSORIES 1.1. Mount Bearing Profile The extruded Aluminum mounting frame has pre-designed profiles for easy attachment of the other mounting components Middle and End Clamps Middle and end clamps easily fit the available slot provided by the mounting profiles. End clamps secure the PV panel at the end of the profile and middle clamps secure two panels where they join Hanger Bolts + klicktop Used to affix mounting profiles to corrugated metal or similar roof structures. The hanger bolt replaces the existing bolt and extends the bolt beyond the roof in order to attach the mounting profile. The unit includes a seal and klicktop attachment for ease of connection Alterations There are many other connection accessories that can be used for the different installation requirements and can be readily acquired from your local accessories supplier Roof Hooks Roof 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 tiles placed over the installed roof hook.

9 2. MOUNTING ACCESSORY REQUIREMENTS 2.1. Three Panel System The three panel system requirement is based on the Solaire Eco Plus 240Wp solar panel and may differ with panel specifications. The components herein use 40-50mm ranges that is suitable to the specified panel Tiled Roof Profile: 7m total required split in two parts for top and bottom mounting. End clamps: 4 x suitable end clamps Middle clamps: 4 x suitable middle clamps Roof Hook: 6 x Roof hooks with klicktop spread over distance of mounting profiles Schletter components The table below provides the product codes for 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) Corrugated Roof Profile: 7m total required split in two parts for top and bottom mounting. End clamps: 4 x suitable end clamps Middle clamps: 4 x suitable middle clamps Hanger Bolts: Minimum 6 x bolts with klicktop spread over distance of mounting profiles Four Panel System The four panel system requirement is based on the Solaire Eco Plus 240Wp solar panel and may differ with panel specifications Tiled Roof Profile: 8.3m total required split in two parts for top and bottom mounting. (Requires connector) End clamps: 4 x suitable end clamps Middle clamps: 6 x suitable middle clamps Roof Hook: 8 x Roof hooks with klicktop spread over distance of mounting profiles Corrugated Roof Profile: 8.3m total required split in two parts for top and bottom mounting. (Requires connector) End clamps: 4 x suitable end clamps Middle clamps: 6 x suitable middle clamps Hanger Bolts: Minimum 8 x bolts with klicktop spread over distance of mounting profiles. CONTACT DETAILS Schletter South Africa - schletter-za@outlook.com Solaire South Africa - sales@solairetechnologies.com Energi Mart - info@energimart.co.za

10 TILED ROOF INSTALLATION Roof Hook Installation Select 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 by fastening it with appropriate screws. 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. Once the roof hook is secured, carefully slide the roof tile over the roof hook and back to its original position, leaving the required part of the roof hook exposed for use. Once all the required roof hooks have been installed, secure the module bearing profile to the roof hooks. Insert the middle clamps and next PV panel and secure the middle clamps by fastening the middle clamp screws. Continue with middle and end clamps until the full array of PV panels are installed.

11 CORRUGATED ROOF INSTALLATION Corrugated Roof Installation Select the ideal position to mount the PV panel array and remove existing screws from the roofing structure. Replace the screws with the provided self-tapping screws with attachments. Adjust the middle nut to provide desired height and attach the klicktop if not pre-assembled. Once the module bearing profile has been secured, insert the end clamps and the first PV panel and secure it by fastening the end clamp screws, similar to the tiled roof installation. Tighten the screw above the rubber seal to prevent any leakage and take care not to distort by excessive force. Insert the middle clamps and following PV Panels and tighten the middle clamp screws to secure. Once screws with attachments are secured, attach module bearing profile and secure by fastening the screws.

12 CONTACT US: