Solene SLAR32DC-66 Bedienungsanleitung
OPEN LOOP DOMESTIC HOT WATER SOLAR SYSTEM
WITH DIFFERENTIAL CONTROL
MODELS SLAR32DC-66, SLAR40DC-80
SLAR64DC-120, SLAR80DC-120
INSTALLATION MANUAL
Solene™
™
927 Fern St. Suite 1500
Altamonte Springs, FL 32701
(866) 902-0060
SRCC OG-300 Certified
The solar energy system described by this manual, when properly installed and maintained, meets the
minimum standards established by the Florida Solar energy center, in accordance with section 377.705,
Florida Statutes. This certification does not imply endorsement or warranty of this product by the Florida
Solar Energy Center or the State of Florida.
The solar energy system described by this manual, when properly installed and maintained, meets the
minimum standards established by the Florida Solar Energy Center, in accordance with Section 377.705,
Florida Statutes. This certification does not imply or endorse warranty of the product by the Florida Solar
Energy Center of the State of Florida. Solar Water Heating System
SLAR-IMDC
9-04-09
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TABLE OF CONTENTS
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System Schematic (SLAR32DC-66 & SLAR40DC-80) 12
System Schematic (SLAR64DC-120 & SLAR80DC-120) 13
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SAFETY PRECAUTIONS
There is no substitute for safety. Always exercise extreme caution, care and good judgment
when working on or around a roof. Here are just a few installation precautions to keep in mind:
When working on the roof, always take care to avoid hazards such as overhead electrical
wires or loose shingles. Secure ladders so they will not slip or fall. Wear shoes with
proper tread to prevent slipping on the ladder or sloped roof areas.
Always check that power is turned off before attempting any wiring or electrical hook-
ups, especially when water is present. It’s always a good idea to shut power off to both
the solar storage tank and to the automatic control when there is water leaking at the tank.
Do not hook up or turn on any electricity to the solar storage tank until it is full of water. If the
heating element is not covered in water prior to being turned on, it will burn out.
Always consult the proper authorities or check with your local building department for the
permit requirements and codes applicable before you start the job. Installation should always be
in accordance with the National Fire Code and with all local codes.
INSTALLATION INSTRUCTIONS
SIZING & ORIENTATION
The vast majority of Solar Domestic Hot Water (SDHW) systems are comprised of “Medium
Temperature” solar collectors manufactured using tempered glass and some type of metal
absorber plate. They differ from “Low Temperature” systems predominantly utilized in
swimming pool heating applications. These systems are typically manufactured using plastic
resins. “High Temperature” systems are utilized to generate steam for industrial applications.
Corona collectors belong to the “Medium Temperature” category.
Normally, only one or two Aurora collectors are needed for a SDHW system. The number of
collectors is determined not only by the amount of water that is needed, but also by the latitude
of the installation and the collector’s orientation. The following table details Corona’s
recommended minimum system sizing guide for a typical installation:
Tank
Capacity # of Collectors
Needed Collector Type Control Type System Model
Number
66 gallon 1 SLAR-32 (4’ x 8’) Differential
Control SLAR32DC-66
80 gallon 1 SLAR-40 (4’ x 10’) Differential
Control SLAR40DC-80
120 gallon 2 SLAR-32 (4’ x 8’) Differential
Control SLAR64DC-120
120 gallon 2 SLAR-40 (4’ x 10’) Differential
Control SLAR80DC-120
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Normally, collectors are installed on roofs, as close as possible to the tank, to minimize heat loss
through the pipe. The pipes between the tank and the collectors MUST be insulated with at least
½” thick insulation, for the same reason.
The solar collectors must be located in a structurally sound area of the roof that will be exposed
to the sun for the majority of the day, all year round.
The recommended angle of the collectors is the angle of the installation location’s LATITUDE.
This angle is designed to maximize solar absorption during winter months when the sun is low.
A variation of +/- 15 degrees is acceptable. The orientation of the collectors must be due south
55 degrees. Flush mounts on available roof slopes are recommended to allow convenience and
cost effectiveness, since these variations from the exact angle and orientation will affect the
system’s performance only by about 5%.
COLLECTOR MOUNTING
There are two basic roof-mounting methods:
FLUSH MOUNT INSTALLATION - Parallel to the roof line, as illustrated below.
Figure #1, Flush mounted collector
Flush Mount Installations are recommended when the roof’s slope conforms to the orientation
requirements as stated previously. This is the easiest and most aesthetically pleasing installation
method. After the collector(s) are installed, it should resemble skylight. The flush mount
consists of four (4) U-channels (SL-UC) and four (4) Gripper Sets (SL-GS), two set each for the
top and bottom.
1. Start from the bottom. The bottom side of the Corona collector is marked by two weep
holes placed about 20” apart on the short anodized aluminum edge of the collector.
When elevating the collector to the roof, make sure that the “weep holes” are facing
down. It is recommended to install the collectors vertically (length up the roof’s slope),
but the collectors may be installed horizontally as well.
2. Once the collector’s location is determined, anchor two (2) U channels to the roof using
two (2) stainless steel 2” x 5/8” lag bolts for each U-channel. The U-channels should
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be spaced approximately 30” apart. The collectors will rest on top of the U-channels.
(Picture 1)
Picture #1
3. Verify a secure connection to the trusses. If lagging directly into the roof trusses is not
possible, secure a 2’ x 4’ wood beam perpendicular to the trusses, inside the attic, and
anchor the bolts to this member. Again, verify a secure connection into the new
member.
4. Connect the Latch to the Gripper (Picture 2) utilizing the provided nut and bolt. Slide
the Latch into the top of the U channel so that the Gripper remains on top of the
opening. Place them at the middle of the U-channel’s top and tighten. (Picture 3)
Picture #2 Picture #3
5. Loosen the Gripper providing space to insert the slot at the collector’s edge between the
Gripper’s hook and the U-channel’s top. Once both Grippers are grabbing the
collector’s edge slot, tighten both Grippers. (Picture 4)
Picture #4 Figure #3
6. Repeat steps 2-5 for the top. That’s it. The collector is anchored.
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ANGLE MOUNT INSTALLATION - Not parallel to the roofline, normally used on flat roofs and
ground mounts, as illustrated below.
Figure #2, Angle mounted collector
Angle Mount Installations involve positioning the collector(s) at an angle so that the upper part
of the collector is higher than the lower in reference to the mounting surface. The “angle
mounting” is used on horizontal surfaces or on roofs that slope in directions other than south 55
degrees.
1. Use the Angle Mounting kit (SL-MK), see picture 5. Connect the U-channels to the
roof just like in the Flush Mounting method. Assemble the mounting clips to both U-
channels utilizing the provided bolts (Picture 6).
Picture #5 Picture #6
2. Screw the mounting clips to the BOTTOM part of the collector (the weep hole side)
using two (2) stainless steel or aluminum screws each. (Picture 7)
Picture #7
3. Assemble both rods and top mounting clips (picture 8). Connect the clips to the
collector’s top by stainless steel or aluminum screws. (Figure 4)
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Picture#8 Figure#4
4. Connect to the U-channels to the opposite side of the rod, using the provided nuts and
bolts. (Picture #10)
Picture #10
5. Lift the collector’s top with the assembled rod kits and anchor the U-channels to the
roof, ensuring the proper angle to the collectors. (Picture 11)
Picture #11
Install all components in accordance with local code so that the performance of any structural
member or fire rated assembly is not reduced.
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PIPE INSTALLATION
Careful consideration of the proper piping of the system should be done prior to a final decision
being made on the collector mounting. The collectors and piping should slope slightly
downward, toward the tank, in order to allow for draining in freezing conditions.
Piping should consist of copper tube (Type M), insulated with at least ½” Armaflex pipe
insulation or similar and be wrapped with aluminum tape in all areas exposed to UV radiation.
All soldered connections require 95/5 solder.
The cold-water inlet (supply) pipe connection should be made at the lowest corner of the
collector. The hot-water outlet (return) pipe connection should be made at the opposite corner of
the cold-water inlet. The hot-water return should have the shortest possible run back to the
storage tank to avoid heat loss.
The Vacuum Relief Valve (Part #6), Automatic Air Vent (Part #7), Pressure Relief Valve (Part
#8), and Freeze Protection Valve (Part #5), should be plumbed into the return line as illustrated
in the System Schematic on page 12 of this manual.
It is extremely important to take special care in weather proofing the piping installation through
the roof.
1. Drill a hole the same diameter as the copper piping being utilized in the system
installation being careful not to place the opening above the collector supply point.
The system will not drain properly if the opening is above the above the supply point.
2. Cement a copper roof flashing around the pre-drilled hole. The upper edge of the
flashing should slide underneath the adjoining shingle.
3. Push the copper tube up through the roof flashing. Slide the flashing cap over the
copper tubing so it rests on the flashing opening. The wiring for the Photovoltaic
Module should also be run through this the return line flashing.
4. After all of the piping is completed, solder the flashing cap into place.
5. Utilizing a polybutalyne adhesive, finish weather proofing the roof flashing.
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PLUMBING
The storage tank should be placed in a location to best minimize heat loss. It should be placed as
close to the system return line as possible. Adequate ventilation and access for possible future
service work are important considerations. In order to prevent possible water damage in case of
tank leakage, a pan with a ¾” drain line should be installed.
As illustrated in the System Schematic on page 12 of this manual there are very specific
requirements as to valve, thermostat, and pump placement.
The following component equipment should solder in place according to their specific relative
locations as outlined in the System Schematic.
1. Circulation Pump (Part #4) - Taco 006BC4 Circulation Pump
2. Thermometers (Part #11) - Letro SL-2D In-Line Thermometer w/ temperature range
of 50to 220 F.
3. Boiler Drains (Part # 12) - BD-050 (½”), or BD-075 (¾”) Boiler Drains on both
Supply and Return lines.
4. Ball Valves (Part #14) - BV-050 (½”), or BV-075 (¾”) Ball Valves on both
Supply and Return lines.
5. Cold Water Inlet Valve - GV-075 (¾”) Gate Valve.
6. Mixing Valve - Watts 70A-075 (¾”) Mixing Valve.
AUTOMATIC DIFFERENTIAL CONTROL
Power to the circulation pumps is controlled by an automatic differential control that has two
temperature sensors. One sensor is located on the outlet of the solar collector and the other
sensor is located on the storage tank behind the lower access panel. When the storage tank
sensor detects water temperatures cooler than the desired temperature set on the control, and if
the collector sensor is 8F warmer than the storage tank sensor, the automatic control turns on
the circulation pump to harvest the energy available from the sun. When the desired temperature
is met, or when the solar collector sensor drops to within 4 degrees of the storage tank sensor, the
control turns off the circulation pump. (This on/off differential can be set to 24º/4º rather than
the 8º/4º.)
The automatic control has a three-position switch - ON, AUTO or OFF. (Sometimes this switch
is located on the inside of the cover.) During normal operation, the control is switched to AUTO
where the control will turn the circulation pump on and off at the appropriate times. When
switched to ON, the control sends power to the circulation pump. When switched to OFF, the
control turns the circulation pump off.
THE AUTOMATIC CONTROL HAS A HIGH LIMIT STORAGE SETTING THAT CAN BE ADJUSTED
FROM 110°F TO 200ºFAND IS TYPICALLY PRESET TO 140°F.
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ELECTRICAL AND WIRING REQUIREMENTS
A properly licensed contractor must make the 230-volt electrical connection to the water heater
or solar storage tank and the electronic time switch (Optional). If your solar contractor is not
allowed by law to make these connections consult a licensed electrician.
NEVER ACTIVATE THE CIRCUIT BREAKER CONTROLLING THE ELECTRICAL HEATING ELEMENT
UNTIL THE SOLAR STORAGE TANK IS COMPLETELY FILLED WITH WATER.This will prevent
“dry firing” of the heating element. The electrical heating element will be destroyed almost
instantaneously if not completely submerged in water when activated. Make sure the water
heater circuit breaker is off until the solar storage tank is completely filled.
We recommend the use of a 115-volt differential control with a factory installed six-foot line
cord. The installation requires one 115-volt outlet to be installed near the solar storage tank.
Plug the control into the outlet. The circulation pump line cord is plugged into the receptacle on
the side of the controller. A 230-volt control and circulation pump may be substituted, but
troubleshooting the components in the future becomes more difficult. The specified differential
thermostat is the Goldline model GL-30-LCO.
THERMOMETERS
Locate two thermometers; one at the supply line and one on the return line of the solar loop so
that the temperature rise across the collector can be determined.
LABELS
Label installation is mandatory at several locations of the system. Please insure compliance by
affixing labels at the designated locations.
SYSTEM START-UP
The Start-up Procedures are detailed in the Solene Open Loop (SLAR-HMDC) Homeowner’s
Manual.
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