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Table of Contents

1. Planning the Installation

1.1 Site Analysis
1.2 Collector Tilt
1.3 Materials

2. Tank Installation

3. Collector Installation and Controls

3.1 Frame and Collector Mounting
3.2 Collector Piping
3.3 Pipe Insulation
3.4 Solar Controls and Wiring
3.5 Collector System Startup

4. Domestic Hot Water

4.1 Piping
4.2 Re-circulator DHW Controls
4.3 DHW System Startup

A1. Troubleshooting

8.1 Collector System
8.2 Differential (delta-T) Controllers
8.3 Pumps

About the Author

HoloTech

Solar Installation Manual

Содержание HotoTech

Страница 1: ...HoloTechtm Solar Hot Water System Installation Manual Ben Gravely PhD Holocene Technologies 1241 Wicker Drive Raleigh NC 27604 c 2012...

Страница 2: ...Frame and Collector Mounting 3 2 Collector Piping 3 3 Pipe Insulation 3 4 Solar Controls and Wiring 3 5 Collector System Startup 4 Domestic Hot Water 4 1 Piping 4 2 Re circulator DHW Controls 4 3 DHW...

Страница 3: ...th the less solar energy will be collected The placement of the collectors and the tank should be determined including the routing for piping between the components Shading considerations can be inclu...

Страница 4: ...ig 2 1 for examples The tank must be installed on a floor or surface substantial enough to carry the full weight of the tank plus water Table 2 1 shows approximate filled weights of five common reside...

Страница 5: ...the wiring finished the system startup procedure can begin Make sure the pressurized domestic hot water line and standard water heater are purged and filled with water Fill the tank using the boiler...

Страница 6: ...rray of solar collectors The first is the south facing direction south azimuth and the second is the tilt of the collectors up from the ground both described in section 1 The third angle is critical t...

Страница 7: ...ting from the lowest corner of the collector array On the opposite end mark the distance up the roof as shown in fig 3 3 Another method is to hold a bubble level perpendicular to the level line and 1...

Страница 8: ...and under the feet with silicone sealant to keep water out Make sure to point the narrow dimension of the feet up and down the roof to prevent damming rain water and trapping leaves and debris The co...

Страница 9: ...loTechtm Solar Installation Manual 9 Hi Sensor Location Horizontal Line Drain Slope Line Supply Return Low Sensor Location Figure 3 2 Collector Piping Circuit Figure 3 6 Collector to tank piping layou...

Страница 10: ...rray from the lowest corner 2 water exits the collector array from the highest corner 3 the water from all collectors must rise to a common high point before it is allowed to drain back to the tank 4...

Страница 11: ...e any water can return to the tank Figure 3 8 d shows collectors arranged vertically and horizontally It is a combination of two b type circuits placed one over the other The same result can be achiev...

Страница 12: ...HoloTechtm Solar Installation Manual 12 b c Figure 3 3 Collector Piping Diagrams a Drain Slope d Figure 3 8 Collector piping for arrays in the same plane...

Страница 13: ...HoloTechtm Solar Installation Manual 13 Supply Return Supply Return Figure 3 4 Dual Bank Piping Diagrams a b Flow Setter Valves Figure 3 9 Collector piping for arrays on a flat roof...

Страница 14: ...rigid foam products Use the next thickness up Insulate all piping between the collectors Apply silicone sealant between the pipe jacket and the collector box to keep water from getting in and wetting...

Страница 15: ...s lower temperature water to the heat source The low temperature sensor position is the bottom of the solar tank for collector circuits or the return line of the pool for the pool spa circuits The ter...

Страница 16: ...ver the flat part of the sensor not the round part to avoid crushing the body of the sensor Connect the hook up wire to the sensor leads Use wire nuts or crimp connectors and fill with silicone sealan...

Страница 17: ...ch to the AUTO position Refer to Table 3 3 Connect a low value resistor low R hot across the COL terminals and observe the controller response The system should turn on since the COL terminals appear...

Страница 18: ...dard water heater a supply cold line from the bottom of the water heater and a return hot line to the top of the water heater Figure 4 2 illustrates the piping diagram The dip tube in the water heater...

Страница 19: ...rasp the two pipes going in and out of the DHW exchanger Note the flow of water through the exchanger by the change in temperature of the pipes as the water flows through them Recirculator Startup Tur...

Страница 20: ...quickly The different electrical circuits of a HoloTechtm solar system are all independent and can be treated separately This simplifies the procedure considerably The circuits are Collectors Domestic...

Страница 21: ...sensor 3k and the third simulates the very hot OVT condition 1k Set the controller switch to AUTO and connect the STO COL and OVT resistors to the terminals in the patterns indicated in Table A1 1 No...

Страница 22: ...ure vs Resistance HoloTechtm solar controls use 10K thermistor temperature sensors These devices change resistance with temperature They are defined by having 10K resistance at 25 C 77 F HoloTechtm So...

Страница 23: ...uns pumps water flow stops Height greater than pump head Air locked lines traps in lines If a pump does not pump water the first test should be to swap out the capacitor If this does not work remove t...

Страница 24: ...equirements solar performance and economic benefit that were recognized as authorized analytical methods by HUD the NC Energy Division and the US Army Corp of Engineers He has presented numerous paper...

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