SUN EQUINOX HEATING SYSTEMS

SUN EQUINOX HEATING SYSTEMS HIGH-EFFICIENCY HOT WATER SOLUTIONS INSTALLATION & OPERATION MANUAL Production Number: Customer Contact Information Other Resources 260-65-5605 http://www.solarusagenow.com http://dealer.solarusagenow.com info@solarusagenow.com SUN EQUINOX HEATING SYSTEMS

Warranty Warranty conditions 1. 2. 3. 4. 5. 6.. 8. Warranty: Solar Usage Now provides warranty for The SUN Equinox storage tank The SUN Equinox storage tank heat exchanger Warranty of material and fabrication faults, in addition to the existing legal guarantee period. Duration of the warranty: 20 years for the SUN Equinox storage tank 5 Years for the storage tank heat exchanger Other Components: Other components used within the SUN Equinox Heating System are warranted under the manufacturers stipulations and time period. This includes pumps, controllers, boilers, and solar panels. Solar Usage Now does not warranty these items. Start of the warranty a.) The Warranty period starts on the day of installation. b.) The warranty starts no later than 1 year after the date of manufacture of the items covered by the warranty. Conditions for claims under warranty Claims under the warranty will only be accepted if: The Unit has been used as intended and was installed properly in a verifiable manner by a qualified expert. The unit has been serviced at regular intervals by an expert in accordance with the relevant documentation and has been cared for in accordance with specifications. Scope of warranty: a.) For the first three years of the warranty period, Solar Usage Now undertakes to repair the unit free of charge, or commission a company or individual to repair the unit, where a material or manufacturing fault has resulted in malfunction. Should repair not be possible or uneconomical, Solar Usage Now is prepared to provide a new unit and to pay the removal and installation cost involved. No claim for reimbursement of additional consequential cost or damage may be derived from this. Exclusion from the warranty: a.) Improper use, tampering with the unit and unqualified modifications immediately invalidate the warranty. The same applies if the unit has not been veritably properly maintained. b.) Dispatch and transport damage are excluded from the warranty. c.) Unless agreed otherwise the warranty does not cover reimbursement of consequential costs, in particular fitting and removal costs or damage. d.) Wearing parts (as defined by Solar Usage Now such as indicators, switches, fuses are not covered by the warranty). Final Provisions: If certain specific provisions of this warranty declarations are, or become, void, then the validity of the remaining provisions remains unaffected by this. Solar Usage Now LLC All Rights Reserved SUN Equinox Owners and Operations Manual

Index Safety Chapter 1 1.1 Refer to the manual 3 1.2 Warning signs and explanation of symbols 3 1.3 Avoid danger 4 1.4 Intended use 4 1.5 Instructions for operating safety 4 Product Descriptions Chapter 2 2.1 Designs and Components 2.2 Brief Description 8 2.3 Advantages 8 Set-up & Installation Chapter 3 3.1 Designs and Components 10 3.2 Set-up 13 3.3 Installation 13 3.4 Inspection and unpacking 15 3.5 Installation Guidelines 15 3.6 Connection of Multiple Storage Tanks 18 Commissioning Chapter 4 4.1 Initial Commissioning 19 4.2 Commissioning 19 4.3 Check List for Commissioning 20 4.4 Notes 21 Solar Usage Now LLC All Rights Reserved SUN Equinox Owners and Operations Manual

Safety Chapter 1 1.1 Refer to the manual These instructions are intended for authorised and trained HVAC and Plumbing experts who have experience in the proper installation and maintenance of heating systems and hot water storage tanks by virtue of their technical training and know-how. The manual provides all the necessary information for installation, commissioning and maintenance, as well as basic information on operation and settings. Please see the attached documents for a detailed description of operation and control. Please read this manual carefully and thoroughly before proceeding with the installation or modification of the heating system. 1.1.1 Relevant Documents When connecting to an external heat generator; the appropriate installation and operating instructions for that particular unit(s). When connecting a solar panel or field; the appropriate installation and operating instructions for that particular unit(s). When connecting any other 3rd party components; The appropriate installation and operating instructions for those particular unit(s). 1.2 Warning signs and explanation of symbols 1.2.1 The warnings are classified in this manual according to there severity and probability of occurrence.»» DANGER!»» Draws attention to imminent danger.»» Disregarding this warning can lead to serious injury or death.»» WARNING!»» Burning or Scalding may occur»» WARNING!»» Indicates a potentially dangerous situation.»» Disregarding this warning can result in serious injury or death.»» WARNING!»» Electrical current present»» Electrical shock may occur»» CAUTION!»» Indicates a situation which may cause possible damage.»» Disregarding this warning may cause damage to property and the environment»» USER TIP!»» Useful information»» Not a hazard or warning Solar Usage Now LLC All Rights Reserved SUN Equinox Owners and Operations Manual Page 3

Safety Chapter 1 1.3 Avoid danger The SUN Equinox is state-of-the-art and is built to meet all recognized technical requirements. However, improper use may result in serious physical injuries or death, as well as property damage. To prevent such risks, install and operate only: As stipulated and in perfect condition. With an awareness to safety and the hazards involved. This assumes knowledge and implementation of the contents of this manual, the relevant accident prevention regulations as well as the recognized safety-related and occupational medical rules. 1.4 Intended use The SUN Equinox may only be used as a hot water storage tank system. The unit must be installed, connected and operated only according to the information in this manual. For connection to external heat units including boilers and solar panels, only the material specified by Solar Usage Now may be used. Only external heat units specified, approved, or supplied by Solar Usage Now may be used. Only solar panels specified, approved, or supplied by Solar Usage Now may be used. Any use above and beyond this is deemed to be improper use. Responsibly for any resulting damage will be borne by the user/owner alone. Intended use also includes the observance of maintenance and inspection conditions. Replacement parts must at least satisfy the technical requirements defined by the manufacture. This is the case, for example, with the use of original replacements parts. 1.5 Instructions for operating safety 1.5.1 Before working on the hot water storage tank and the heating system Work on the hot water storage tank and the heating system (e.g. Installation, connection and initial commissioning) should only be carried out by authorized and trained HVAC and plumbing experts. Switch off the main supply before starting any work on the hot water storage tank and heating system and secure it against unintentional switch-on. Lead tamper-proof seals must not be damaged or removed Make sure the safety valves comply with the requirements of local and state codes when connecting the heating side and with the state and local codes when connecting on the domestic water side. 1.5.2 Electrical installation of optional accessories Solar Usage Now LLC All Rights Reserved SUN Equinox Owners and Operations Manual Page 4

Safety Chapter 1 Electrical installation should only be carried out by a qualified electrician observing the technical electrical guidelines and regulations of the relevant state and local electrical codes. Only use external pump relays that are supplied with or specified by Solar Usage Now. 1.5.3 Unit installation room Only erect the SUN Equinox Heating System if a ground load-bearing safety factor is guaranteed. The ground must be flat and level. Erect outdoor is only possible to a limited extent. The storage tank must not be continuously exposed to direct sunlight. The SUN Equinox must be protected from frost. The electrical components of the system must be protected from precipitation. 1.5.4 Corrosion protection In some regions, corrosive drinking water is supplied by public utility companies that can cause damage through corrosion even in high grade stainless steel. Check with your local water supply to see whether corrosion problems can occur when using hot water storage tanks made of stainless steel in your area. Appropriate water treatment may be required. 1.5.5 Potable water connection With potable water connection, the following must be observed. Protection of domestic water from contamination in domestic water installations and general requirements concerning safety equipment from the prevention of domestic water contamination by back-flow. Technical regulations for domestic water installations And, in addition, the country-specific legal stipulations. During operation of the SUN Equinox Heating System, the storage tank temperature may exceed 16 o F, particularly when solar power is used. Therefore, some form of scalding protection needs to be included when you install the system (hot water mixing valve). Use an expansion tank if the cold water connection is >8 psi. Solar Usage Now LLC All Rights Reserved SUN Equinox Owners and Operations Manual Page 5

Safety Chapter 1 1.5.6 Operation Operate the SUN Equinox only with the storage tanks filled up to the overflow edges. Operate the SUN Equinox only with a set pressure (max. 8 psi) 1.5. Instructing the user/owner Before you hand over the heating system and the hot water storage tank, explain to the owner how he/she can operate and check the heating system. Document the hand over by filling in and singing the checklist in Chapter 4. Solar Usage Now LLC All Rights Reserved SUN Equinox Owners and Operations Manual Page 6

Product Information Chapter 2 2.1 Designs and Components 2.1.1 132 Gallon Storage Tank 2.1.2 9 Gallon Storage Tank K E C I J D G H F A E K L C I J D G H F A B C E H D G F A B L B 2 1 4 3 6 5 1 2 4 1 2 4 6 1 3 1 3 5 15 15 14 6 5 12 12 16 8 16 8 13 9 8 11 13 13 14 14 10 11 11 9 9 10 10 12 1. 2. 3. 4. 5. 6.. 8. 9. 10. 11. 12. 13. 14. 15. 16. 1. Potable Cold Water Inlet Potable Hot Water Outlet Secondary Coil Inlet Secondary Coil Outlet Tertiary Coil Inlet Tertiary Coil Outlet Water level Site Glass Top Port Middle Port Bottom Port Tank Handle Overfill Port Thermal Sensor Dry-Well Storage Tank Tank Lid Atmospheric Water Level Solar Return Single tank setup only not for use in multi linked storage setup A. B. C. D. E. F. G. H. I. J. K. L. Water level Site Glass Thermal Sensor Dry-Well Solar Return Single tank setup only not for use in multi linked storage setup Secondary Coil Outlet Secondary Coil Inlet Filling Port - Multi linked storage tank Internal Makeup assembly single storage tank Tertiary Coil Inlet Tertiary Coil Inlet None None Potable Cold water Inlet Potable Hot water outlet 1. 2. 3. 4. 5. 6.. 8. 9. 10. 11. 12. 13. 14. Potable Cold water Inlet Potable Hot water outlet Secondary Coil Inlet Secondary Coil Outlet Solar Return Water level Site Glass Tank Handle Storage Tank Atmospheric Water Level Thermal Sensor Dry-Well Top Port Bottom Port Overfill Port Tank Lid A. B. C. D. E. F. G. H. Water level Site Glass Thermal Sensor Dry-Well Potable Cold water Inlet Secondary Coil Inlet Solar Return Makeup Water Assembly Secondary Coil Outlet Potable Hot water outlet Solar Usage Now LLC All Rights Reserved SUN Equinox Owners and Operations Manual Page

Product Information Chapter 2 2.2 Brief Description The hot water storage tank is a combination of a hot water storage tank and an instantaneous water heater. The pressureless storage water serves as the heat storage medium. Useful heat is supplied and removed via the pressureless storage water. The domestic hot water is supplied and removed via the spiral corrosion resistant heat exchanger, which is made from corrugated stainless steel pipe and is completely immersed in the storage tank water. The cold water, flows in when the hot water is drawn off, is first routed to the very bottom of the heat exchanger of the storage tank, where it cools the lower zone of the storage tank as much as possible. The standby zone is heated by an external heat generator(s). (Condensing boiler(s), heating pump(s), solar panels). The potable water continually absorbs heat from the storage tank water on its way up the heat exchanger. The direction of flow by the counter current principle and the helical shape of the heat exchanger creates a distinct temperature layering in the storage tank. As high temperatures can continue in the top area of the storage tank, it can achieve a high hot water output even on long tapping cycles. The SUN Equinox heating system can, in addition to an external heat generator, also be heated by solar power. Depending on how much solar energy is available, the entire storage tank can be heated up. The stored heat is used for hot water generation as well as for the heating support. The high total storage capacity also temporarily allows for periods when the sun does not shine to be bridged. All external heat generators used with the SUN Equinox must be supplied or approved by Solar Usage Now. 2.3 Advantages 2.3.1 Optimum water hygiene Low flow or unheated zones on the domestic water side are completely excluded with the hot water storage tank. It is impossible for sludge, rust or other sediments to be deposited, as can be the case with other large volume tanks. The water which is fed into the system first is also discharged first. (First in, first out principle). 2.3.2 Low maintenance and corrosion The hot water storage tank is made of plastic and is completely corrosion-free. Sacrificial anodes or similar anti-corrosion units are not necessary. This means that associated maintenance work, e.g. Changing the protective anodes or cleaning the storage tank, does not need to be carried out on the hot water storage tank. Only the fill level of the storage tank water needs to be checked. The corrugated stainless steel pipe heat exchangers on the heating and domestic water side are made from high quality stainless steel. 2.3.3 Low scaling On the storage tank side only one deposition of scale is possible. The external heating components therefore remain clean, as do the stainless steel heat exchanger pipes in the storage tank water. This means that no scale can build up which would continuously reduce the efficiency of heat transfer in the course of operation. (As is the case with other storage tank designs). Solar Usage Now LLC All Rights Reserved SUN Equinox Owners and Operations Manual Page 8

Product Information Chapter 2 The thermal, pressure expansion and high flow rates in the domestic water heat exchanger release any possible scale deposits, which are then flushed away. 2.3.4 Economical operation The full-area heat insulation of the storage tank ensures very low heat loss. Allowing for the best use of the heat energy being applied. 2.3.5 Modular extension facility If the heat output of a single hot water storage tank is not adequate, one can interconnect several storage tanks. Solar Usage Now LLC All Rights Reserved SUN Equinox Owners and Operations Manual Page 9

Set-up & Installation Chapter 3 3.1 Designs and Components 3.1.1 9 Gallon Tank Designs H 1... M 19 18 H m 21 15 16 20 1 1 12 13 14 5 NC NO 10 8 9 3 4 11 2 6 1. 9 Gallon Storage Tank 2. Wall Hung Condensing Boiler 3. Solar Thermal Panels 4. Solar Supply 5. Solar Return 6. Boiler Supply. Boiler Return 8. Solar Circulator 9. Boiler Circulator 10. 3-Way Diverting Valve 11. Differential Controller 12. Upper tank Sensor 13. Inlet tank Sensor 14. Collector Sensor 15. Mixing Valve 16. Expansion Tank 1. Overflow Drain 18. Potable Water Supply 19. Potable Water Return 20. Heating Coil Circuit Supply 21. Heating Coil Circuit Return Fig 3-1 9 Gallon Dual Coil Tank (With 3-way Diverting Valve) "This illustration is for concept only and should not be used for any actual installation without engineering or technical advice from a licensed engineer or professional. All necessary equipment may not be shown." H 1... H m M 19 20 18 14 1 13 3 5 4 10 2 15 16 1 11 6 9 12 8 Fig 3-2 9 Gallon Dual Coil Tank (Without 3-way Diverting valve) Mini no 3 way "This illustration is for concept only and should not be used for any actual installation without engineering or technical advice from a licensed engineer or professional. All necessary equipment may not be shown." 1. 9 Gallon Storage Tank 2. Wall Hung Condensing Boiler 3. Solar Thermal Panels 4. Solar Supply 5. Solar Return 6. Boiler Supply. Boiler Return 8. Solar Circulator 9. Boiler Circulator 10. Differential Controller 11. Upper tank Sensor 12. Inlet tank Sensor 13. Collector Sensor 14. Mixing Valve 15. Expansion Tank 16. Overflow Drain 1. Potable Water Supply 18. Potable Water Return 19. Heating Coil Circuit Supply 20. Heating Coil Circuit Return Solar Usage Now LLC All Rights Reserved SUN Equinox Owners and Operations Manual Page 10

Set-up & Installation Chapter 3 3.1.2 Maxi Residential Designs 132 Gallon Tank Set-ups and Installation H 1 H 1...... H m H m M 14 M 20 21 5 19 15 18 16 1 1 12 13 Mini Dual Coil no 3 way Fig 3-3 Maxi dual coil w/ 3 way valve 132 Gallon Dual Coil Tank (With 3-way Diverting Valve) NC NO 3 2 4 11 "This illustration is for concept only and should not be used for any actual installation without engineering or technical advice from a licensed engineer or professional. All necessary equipment may not be shown." 10 6 8 9 1. 132 Gallon Storage Tank 2. Wall Hung Condensing Boiler 3. Solar Thermal Panels 4. Solar Supply 5. Solar Return 6. Boiler Supply. Boiler Return 8. Solar Circulator 9. Boiler Circulator 10. 3-Way Diverting Valve 11. Differential Controller 12. Upper tank Sensor 13. Inlet tank Sensor 14. Collector Sensor 15. Mixing Valve 16. Expansion Tank 1. Overflow Drain 18. Potable Water Supply 19. Potable Water Return 20. Heating Coil Circuit Supply 21. Heating Coil Circuit Return Fig 3-4 H 1... M H m 13 3 20 19 5 18 14 4 2 1 10 15 16 1 11 6 12 9 8 Maxi dual coil no 3 way. 132 Gallon Dual Coil Tank (Without 3-way Diverting Valve) 1. 132 Gallon Storage Tank 2. Wall Hung Condensing Boiler 3. Solar Thermal Panels 4. Solar Supply 5. Solar Return 6. Boiler Supply. Boiler Return 8. Solar Circulator 9. Boiler Circulator 10. Differential Controller 11. Upper tank Sensor 12. Inlet tank Sensor 13. Collector Sensor 14. Mixing Valve 15. Expansion Tank 16. Overflow Drain 1. Potable Water Supply 18. Potable Water Return 19. Heating Coil Circuit Supply 20. Heating Coil Circuit Return "This illustration is for concept only and should not be used for any actual installation without engineering or technical advice from a licensed engineer or professional. All necessary equipment may not be shown." Solar Usage Now LLC All Rights Reserved SUN Equinox Owners and Operations Manual Page 11

Set-up & Installation Chapter 3 3.1.3 Commercial Set-up and components 2 4 10 11 1 3 14 13 12 5 1. 132 Gallon Storage Tanks 2. Wall Hung Condensing Boilers 3. Solar Thermal Panels 4. Solar Supply 5. Solar Return 6. Boiler Supply. Boiler Return 8. Solar Circulator 9. Boiler Circulator 10. Mixing Valve 11. Overflow Drain 12. Expansion Tank 13. Potable Water Supply 14. Potable Water Return 6 9 8 Fig 3-5 132 Gallon Single Coil Tanks "This illustration is for concept only and should not be used for any actual installation without engineering or technical advice from a licensed engineer or professional. All necessary equipment may not be shown." Solar Usage Now LLC All Rights Reserved SUN Equinox Owners and Operations Manual Page 12

Set-up & Installation Chapter 3 3.2 Set-up Caution! Only erect the SUN Equinox storage tank if a ground load-bearing safety factor is guaranteed. The ground must be flat and level. Erection outdoors is only possible to a limited extent. The storage tank may not be exposed to continuous direct sunlight, as the UV radiation and the effects of the weather will damage the plastic. The SUN Equinox storage tank must be protected from frost. Make sure that the supply company does not provide corrosive domestic water. - Appropriate water treatment my be required. Warning! Scalding can occur at water temperatures over 110 ºF. This unit is capable of providing water to a temperature of 180 ºF. A mixing valve capable of handing temperatures up to 180 ºF must be utilized. Point of use mixing valves will not be sufficient. Incorrect set-up and installation will render the manufacturer s guarantee void. If you have questions, please contact our office for Customer Service. 3.3 Installation 3.3.1 Overview of Residential connections 4 1 2 5 11 12 13 3 6 9 10 8 1. 2. 3. 4. 5. 6.. 8. 9. 10. 11. 12. 13. 14. 15. Solar Return (1 union nut) Solar Supply (3/4 copper) Cold water supply (1 male) Hot water return (1 male) Inner coil Hot water return (1 male) Inner coil Cold water supply (1 male) Storage Tank Solar Supply Make up water fill line Fill level indicator Sensor dip tube Heater Return Differential Controller Overflow port (not shown) Handle (not shown) Solar Usage Now LLC All Rights Reserved SUN Equinox Owners and Operations Manual Page 13

Set-up & Installation Chapter 3 3 1 4 9 2 11 12 13 6 5 10 8 Maxi Residential Tank Connections 1. Solar Return (1 union nut) 2. Solar Supply (3/4 copper) 3. Cold water supply (1 male) 4. Hot water return (1 male) 5. Inner coil Hot water return (1 male) 6. Inner coil Cold water supply (1 male). Storage Tank 8. Solar Supply 9. Make up water fill line 10. Fill level indicator 11. Sensor dip tube 12. Heater Return 13. Differential Controller 14. Overflow port (not shown) 15. Handle (not shown) 4 3 8 1 3.3.2 Overview of Multiple Commercial Connections (only 1 tank shown for reference 6 2 5 10 Commercial Single Coil Connections 1. Solar and Heater Hot Water Return 2. Solar and Heater Supply 3. Potable Cold water supply (1 male) 4. Potable Hot water return (1 male) 5. Storage Tank 6. Balancing line connection. Fill level indicator (only installed on one in a series) 8. Sensor dip tube (only installed on one in a series) 9. Overflow port (not shown) 10. Handle 4 3 10 6 1 8 2 5 9 12 Commercial Dual Coil Connections 1. Solar and Heater Hot Water Return 2. Solar and Heater Supply 3. Potable Cold water supply (1 male) 4. Potable Hot water return (1 male) 5. Inner coil Hot water return (1 male) 6. Inner coil Cold water supply (1 male). Storage Tank 8. Balancing line connection 9. Fill level indicator (only installed on one in a series) 10. Sensor dip tube (only installed on one in a series) 11. Overflow port (not shown) 12. Handle Solar Usage Now LLC All Rights Reserved SUN Equinox Owners and Operations Manual Page 14

Set-up & Installation Chapter 3 3.4 Inspection and unpacking The SUN Equinox should be inspected upon delivery for possible external damage or missing components incurred during transport. If damage is evident it should be noted on the freight docket and Solar Usage Now should be contacted immediately. If Major damage is apparent, do not lift the package to the site without prior approval from Solar Usage Now. The SUN Equinox is tested and inspected prior to packing to ensure goods are in order and good condition at time of dispatch. 3.5 Installation Guidelines To be installed by licensed HVAC and plumbing personnel Installer must ensure cold water connection does not exceed a pressure of > 8 psi. 3.5.1 Placing and Installing the main heating Unit Be sure to read the Installation and operation manual of the main heating unit. All heating units are to be supplied or approved by Solar Usage Now. Place the main heating unit(s) Establish a connection between the cold water inlet of the main heating unit(s) to the cold water outlet of the main heating unit(s). Establish a connection between the hot water outlet of the main heating unit(s) to the hot water inlet of the storage tank(s). Be sure to use a connection material that can handle temperatures = > 180 ºF. It is recommended to use copper tube. 3.5.2 Solar Power A few helpful tips to protect the system s warranty and ensure that it will run properly. All drain back system collectors are tilted 1/4 per linear foot toward the return side to prevent damage. The controller s collector sensor gets placed on the return side of the collector Circuit setters are placed on the supply side and air bleeds on the return side of each row of collectors Solar Usage Now LLC All Rights Reserved SUN Equinox Owners and Operations Manual Page 15

Set-up & Installation Chapter 3 If your package includes Solar power as a backup or preheat heat source. Be sure to read and understand the installation and operation manual of the Solar power system. Only solar panels supplied or approved by Solar Usage Now may be utilized. Establish a connection between the cold solar supply of the storage tank(s) to the cold water inlet of the solar panel(s). Establish a connection between the hot water outlet of the solar panel(s) to the solar hot water inlet of the storage tank(s). 3.5.3 Cold water connection For domestic water connection observe the stipulations of Local and State Plumbing Codes. Be sure to add heat traps whenever possible in an effort to reduce heat loss. It is recommended by Solar Usage Now to install an efficient thermal insulation to all pipe work. The cold water connection must not exceed a pressure of 8 psi. If a higher pressure is present in the domestic water pipe, a pressure reducer will need to be installed. Connect the pressure relief line to the safety pressure relief valve and the membrane expansion tank as per State and Local plumbing codes. 3.5.4 Mixing Valves A mixing valve able to mix down 180 o F water sufficiently is required to be placed on the potable hot water supply line to mix down the temperature to prevent burns and scalding. 3.5.5 Filling the Heat Exchanger Open the shutoff device of the cold water line. Open the bleeding point for hot water so that as little bleeding as possible can be set. Once water has been discharged from the tap connects, do not interrupt the cold water feed; this will ensure that the heat exchanger will be fully vented and that any impurities or residue will be discharged. Solar Usage Now LLC All Rights Reserved SUN Equinox Owners and Operations Manual Page 16

Set-up & Installation Chapter 3 3.5.6 Filling the Storage tank(s) It is now safe to fill the storage tanks. Fill the storage tank(s) with cold water until water flows out of the safety overflow connection(s). 3.5. Make up water tank Connection Due to atmospheric unpressurized water being the heat exchanging medium, a small amount of evaporation is possible. To prevent the maintenance of constantly checking the tank water level, an auto fill ball float is fitted either inside the storage tank, or externally. Solar Usage Now takes the liberty of adding this component. All that is required on the installing end is the connection of the water line. In most cases the make up water connect will be tied into the potable cold water supply side. Be sure to check the established connection of the cold water to the make up device. Do not turn the make up supply on until the storage tank(s) are filled. 3.5.8 Controller The SUN Equinox comes with a controller for activating and deactivating the pumps to supply heat based on the demands of the domestic water and/or heating. If the system is a solar preheat only : A controller with a differential function will be utilized. A maximum difference between the solar panels and the storage tank water will activate the solar pump to gain the heat energy from the solar thermal collector(s). If the system is non-solar and utilizes an external main heat source such as a wall hung boiler. A controller with a thermostat function will be utilized. A minimum set point will activate the main heat pump to gain heat energy inside the storage tank until a shut off point is reached. If the system is both solar and gas A controller with a differential function and a thermostat function will be utilized. All controllers must be supplied with the package or approved by Solar Usage Now. All temperature settings are pre-set and changes must be approved by Solar Usage Now. Solar Usage Now LLC All Rights Reserved SUN Equinox Owners and Operations Manual Page 1

Set-up & Installation Chapter 3 3.6 Connection of Multiple Storage Tanks To protect the system s warranty and ensure that it will run properly. Do not tamper or alter the flow of pipework, If changes need to be made contact Solar Usage Now. If the heat output of a single storage tank is not adequate, it is possible to connect several storage tanks in a modular fashion. The storage tank(s) depending on the amount connected, act as one large storage tank. Design The designs for multi storage tanks must be approved by Solar Usage Now. Installation Please review all previous installation instructions prior to this section as they do apply to multi connected storage tanks. Match the numeric color code on the manifold with the numeric color code on the storage tank. Use the provided connection sleeves to connect the area s where the copper was cut. (If required) Wire pumps and relays (If required). All controllers are pre programmed. If settings need to be changed, please contact Solar Usage Now. Top manifold rubber washers Bottom manifold rubber washers Solar Usage Now LLC All Rights Reserved SUN Equinox Owners and Operations Manual Page 18

Set-up & Installation Chapter 3 3. Support Manifolding To protect the system s warranty and ensure that it will run properly. Support all manifolding (Top & Side) to prevent damage to the storage tank or stainless steel heat exchanger coils during operation. 3..1 Unistrut Bolt unistrut and foot bracket to the floor Firmly fix each manifold (Top & Side) to unistrut. Slotted Strut Slotted Strut 3.8 Set-up Overview 2 1. 2. 3. 4. 5. 6.. 8. 9. Storage tanks Wall Hung On Demand Water Heater Boiler Supply Boiler Return Stainless Steel Circulator Potable Cold Water Supply Potable Hot Water Return Makeup Water Balance line 1 5 6 8 "This illustration is for concept only and should not be used for any actual installation without engineering or technical advice from a licensed engineer or professional. All necessary equipment may not be shown." 3 9 4 The illustrator above depicts an example of modular designed system. Solar Usage Now LLC All Rights Reserved SUN Equinox Owners and Operations Manual Page 19

Commissioning Chapter 4 Warning! If not commissioned properly, a hot water storage tank can be a health and safety risk endangering human life and its operation may be adversely affected. The hot water storage tank may only be commissioned by authorised and trained heating experts. Caution! An incorrectly commissioned hot water storage tank can cause material damage. Observe the regulations in VDI 2035 in order to avoid corrosion and deposits. If the filling and top-up water has a high degree of hardness, measures must be taken to stabilize this hardness or soften the water and set the pressure of the reducer on the cold water connection to a maximum of 8psi. 4.1 Initial Commissioning 4.1.1 Requirements The hot water storage tank is set up and properly connected. The heating and hot water system have been filled and pressurized to the correct pressure. The hot water storage tank is filled to the overflow point. 4.1.2 Checks before commissioning Check all connections for leakage. 4.2 Commissioning Check all the points on the enclosed checklist. Make a record of the test results and sign it, together with the operator. If an electric immersion heater element is fitted, set the desired storage tank water temperature. Switch on the main supply switch on the heat generator. Wait for the start phase. Solar Usage Now LLC All Rights Reserved SUN Equinox Owners and Operations Manual Page 20

Commissioning Chapter 4 4.3 Check List for Commissioning 1. Is the S.U.N. Equinox Heating System properly installed in accordance with a permitted set-up and without any discernible damage? 2. Is the storage tank filled with water to the overflow point? 3. Is the safety overflow connection connected to an open drain? 4. Is the water pressure in the system < 8 psi? If not is there an expansion tank installed? 5. Are all connections tight and free of leaks? 6. Is all manifolding securely supported with unistrut. Was the main heat source e.g. Wall hung boiler installation manual read thoroughly and understood? 8. Was the main heat source vented properly according to the manufacturers specifications? 9. Does the installation operate without faults? 10. Was an anti-scolding valve installed on the system? 11. Is a solar heating system installed with this system? 12. If answer to #11 is yes. Was the installation completed correctly installed, and the solar manual also thoroughly read and understood 13. Is the flow meter for the solar on the panel supply side? 14. Is the air bleed for the solar on the panel return side? 15. Was the solar panels tilted.25 per foot to allow the collectors to drain back? Only after all points on the checklist can be answered with Yes may the hot water storage tank be started up. Solar Usage Now LLC All Rights Reserved SUN Equinox Owners and Operations Manual Page 21

Commissioning Chapter 4 4.4 Notes Solar Usage Now LLC All Rights Reserved SUN Equinox Owners and Operations Manual Page 22

SUN EQUINOX HEATING SYSTEMS