July 2011HJC
Installation and Operation of
SV30AWX with 100 L Cylinder
Solar Heating System for Fresh Air and Domestic Hot Water
with 12V Solar Cell Operated Pump and Fan
See separate instructions for wall or roof mounting of the standard SV30.
(These manuals also describe the regulator unit and air heating system.)
S
olarVenti
…..
at your sunny service
1.0 Contents
1.1 The SV30AWX Principle …………………………………………………………… 4
1.2 An SV30AWX solar collector on the roof …………………………………………….. 5
…………….………………………………………………………………. 3
2.0 Planning the position of the SV30AWX
2.1 How to position the SV30AWX solar collector ……………………………………… 6
2.2 How to position the hot water cylinder ………….…………………………………… 6
2.3 Concerning piping location ………...…………………………………………………. 7
SV30AWX Solar Collector principal drawing ……………………………..……............. . 7
……………………………………. 6
3.0 Installation Instructions
3.1 Installing the SV30AWX Solar Collector …………………………………………… 8
3.1.1 Drilling holes in the roof ………………………………………………………. 8
3.2 Piping and insulation …………………………………………………………………… 8
3.3 Roof lead-in ……………………………………………………………………………… 8
3.4 Installing the expansion tank ………………………………………………………….. 9
3.5 Installing the hot water cylinder………………………………………………………… 10
3.5.1 Fittings on the hot water cylinder ……………….. …………………………. 10
3.5.2 Mounting the fittings on the hot water cylinder……………………………… 11
3.5.3 Connecting the domestic water ……………………………………………… 12
………………………………………………………………. 8
4.0 The SV30AWX in operation
4.1 Starting up a new installation ………………………………………………………………. 13
4.2 Testing pump and circulation ………………………………………………………….. 13
4.3 Adding anti-freeze (for locations in risk of frost) …………………………………….. 13
4.4 Re-starting your SV30AWX …………………………………………………………. 13
………………………………………………………. 12
5.0 Venting the installation
…………………………………………………………………… 14
6.0 Adjustment
6.1 Adjusting the flow in the solar collector ….………………………………………….. 14
7.0 Performance
7.1 Automatic pump and fan performance ……………………………………………….. 15
8.0 Maintenance
9.0 Warranty and insurance
9.1 Warranty ………………………………………………………………………………….. 15
9.2 Insurance …………………………………………………………………………………. 15
…………………………………………………………………………………. 14
……………………………………………………………………………….. 15
………………………………………………………………………………. 15
………………………………………………………………. 15
Circuit diagram with regulator unit - see instruction for SV30AX
2
1.0 Contents
This manual describes the partial do-it-yourself installation, starting and operation of an SV30AWX
which includes an SV30AWX solar collector with copper absorber, a 100 litres hot water cylinder, an
expansion tank and solar cells for the operation of fan and pump.
The air based part of the system will blow the warm air from the collector into the house by means
of a solar cell operated fan.
The fluid based part of the system will heat up the domestic water by pumping the liquid in the copper absorber of the collector through the heat exchanger of a 100 L hot water cylinder using a solar
cell operated pump.
To ensure the optimal performance of this low-tech system this manual offers advice on the positioning of the various components of the SV30AWX. It will also deal with the initial adjustment, the operation and maintenance, and it will give you additional technical information concerning specific
components in the system.
Separate instructions are provided for roof or wall mounting the collector. When mounting on
roof, however, it is important to distinguish between the two types available:
• Type 1 for solid roofs with profiled sheeting (for instance fibre cement)
• Type 2 for steel plate or asphalt roofing
Upon receipt of your SV30AWX please check that you have received all components in a good
condition.
Please note that a certified plumber may be required to perform and/or check certain parts of the
installation.
The electrical connection is only 12V (not 230/240V) and therefore constitutes no danger.
Caution: It is important to note that although the system is self-circulating, temperatures of about
100º C may be generated in the upper part of the solar collector in case of pump or fan failure.
We urge you to read the instructions thoroughly before you go ahead with the installation. It is important to plan the optimal position of the system and to know how to progress in this partial do-ityourself working process.
Enjoy yourself!
3
1.1 The SV30AWX Principle
12 v solar cells for
fan and pump
SV30AWX solar collector
Regulator
12 v
Warm air into
the house
Hot water cylinder supplying
100 l domestic hot water
Valve
Flow meter
Valve
12V Pump
Valve
Cold water in Hot water out
The most important components of the SV30AWX are:
SV30AWX solar collector with solar cells and fan - expansion tank - cylinder - pump
The SV30AWX produces:-
•
Fresh and warm air, which keeps your house pleasantly dry and moderately heated most
of the year.
•
Domestic hot water, often as a supplement to a pre-installed electric water heater.
4
1.2 A roof mounted SV30AWX solar collector
Please note that the SV30AWX solar collector is located with the long dimension
parallel to the horizontal - or the side with the solar cell at the highest position.
Inlet and outlet are always placed on the same side of the collector. By rotating
the collector 180º you may choose between the right and the left side.
Max 45 degrees
Tubing and expansion unit is
placed behind the solar cell
5
5
2.0
Planning the position of the SV30AWX
This low-tech plant is designed to let the forces of nature work for you to the maximum practical extent. This
will benefit the environment and reduce your costs of living for many years ahead.
In order to ensure the optimal performance of your SV30AWX it is important to consider:-
• The position of the solar collector in relation to the sun and to the rooms of the house
• The position of the other components in relation to the collector and the construction of the house
• The interaction between the various parts of the system
The instructions given below will take you through this process step by step
2.1 How to position the SV30AWX solar collector
• In relation to the sun:
When planning the position of the collector on roof or wall you will have to consider how the maximum
amount of sunlight can be received. If possible the collector should be directed at solar noon. However,
a deviation of up to 45º is acceptable. The inclination from horizontal should range between 30º and
60º. App. 45º is optimal.
• In relation to the rooms of the house:
Please note that the incoming fresh, warm air can only be achieved with the inlet vent in the immediate
vicinity of the collector, so it is important to place the collector above (or against) a room well suited for
this purpose.
Please read separate instructions for further details.
2.2 How to position the hot water cylinder
The hot water cylinder should be installed so that the horizontal distance to the SV30AWX solar collector is
as short as possible.
The hot water cylinder can often be located in a scullery or a furnace room or wherever practical. However,
there must be access to both power and the domestic water supply.
The location should include a drain as water will occasionally drip from a safety valve.
An open space of 50 cm minimum should be maintained in front of the cylinder for service access.
If possible, ensure that additional space is reserved for service of the equipment below the bottom of the cylinder too. In case of restricted space, a safety valve may be placed on the side of the cylinder.
Space must be reserved for piping to and from the SV30AWX solar collector. Lead-in is often made through
ceiling and floor. Please note that all piping to and from the collector must be insulated.
If the hot water cylinder is located in a loft, a frost-proof outlet must be established. Use anti-freeze to avoid
potential frost in the pipes. If an electric water heater is used for frost protection a thermostat should be installed to prevent it from working when the room temperature exceeds +5ºC.
Take care not to impair or damage the fabric of the building when installing the hot water cylinder.
6
2.3 Concerning piping location
Horizontal or ascending piping from the hot water cylinder to the SV30AWX solar collector is optimal. Otherwise you
may have problems starting the installation.
It is possible to place the expansion tank below collector level. However, the difference in height between the top of
the collector and the bottom of the expansion tank should be a maximum of 2 m.
Care should be taken to avoid bends (no air pockets!) and to establish either a horizontal or a falling piping run between the expansion tank and the cylinder as the pump pressure is released behind the expansion tank.
S
olarVenti
(Patented air and fluid collector) HJC June. 2011
SV30AWX system principal drawing
Se description
on page 9
area for solar air absorber
1020
Luft opvarmes i hele solfangeren
View from above
Area 1 for copper absorber
Area 2 for copper absorber
3000 mm
(without PC cover)
A
o
A
460 mm
Væske indløb
for absorber
Udgang fra
absorber
Perforereted plate for air inlet
Patented collector:
Europe: EP 1448937 Incl. Eurasia
Japan: 3808466
China; 02823485.5
Australia: 2002350429
USA: US 7,694,672 B2
Canada: 2,467,078
Backside of the collector
Air outlet
Connect all tubing
and place the solar
cell on top
C
7
3.0 Installation Instructions
3.1 Installing the SV30AWX Solar Collector
Please follow the general installation instructions for the SV30. These instructions come in three versions which are
all included:
SV30AX on roof type 1 (fibre cement, tile etc. Type of roof with overlapping plates or similar)
SV30AX on roof type 2 (asphalt or steel plates. Type of roof with no overlapping)
If placed on the wall the SV30AWX should have an angel of 40 - 60 degrees from horizontal (the smaller angel the
more warm water in summer - and less warm air in winter)
3.1.1 Drilling holes in the roof
One hole Ø = 20 mm is made for the cold piping to the SV30AWX solar collector. This hole is made next to the lowest
pipe outlet on the collector. (For type 1, take care always to drill in crests!)
A second hole Ø = 20 mm for the hot piping from the collector is made next to the first. (See page 7)
Before drilling make sure that the position is correct.
A rubber lead-in will secure the watertight lead-in of the 16 mm tube through the roof plate.
3.2 Piping and Insulation
1) 16 mm tube (smooth tube for distances over 12 m) is insulated and fixed. Fasten the tubes with strips or wire
to laths at short invervals to avoid bends.
2) Intense heating may result in linear expansion especially in rib tubes, but smooth tubes will also expand to
some degree. Normally, this causes no problems. However, care should be taken to prevent the pipes from
rubbing on sharp edges or the like.
.
Long piping arrangement on the roof
If it is necessary to lay tubes outside on a roof etc., the insulation must be protected by a wind and weather proof
tube. This kind of tube comes in 25, 39, 48 and 63 mm Ø and can be pulled over the insulation.
Note: The wire on the roof is secured from birds by pulling it through the rib tube
3.3 Roof lead-in
25 mm rib tube or
insolation protects
the 16 mm tube
16 mm PP tube
Rubber let in
Roof penetration
top of roof plate
with 19-20 mm hole
The rubber let in is put directly in a 19-20 mm hole in the
top of the roof. The 16 mm tube may be pulled through
this. Use some soap so that it will slide through.
8
Hot fluid from the
solar collector
3.4 Installing the expansion tank
Air inlet and outleton top
of expansion tank
extra fluid may be filled in here
Expansion Tank
Clear tube to control fluid level. Hide under
the collector when not in use. Put a lid on top
of this tube (with a tiny hole for the air)
The expansion unit has several purposes:
1) to absorb the expansion of the fluid when hot
2) To let out the air from the fluid
3) can contain all fluid of the collector if it should
boil
4) this protects the fluid from being damaged
5) needs no maintenance
6) runs without pressure
Max level of fluid.
Cold fluid from the
hot water cylinder
Normal level of fluid.
Minimum level of fluid.
Be carefull not to overfill the tank
Hot fluid to the hot water
cylinder.
The following tubing must
be placed underneath the
minimum level of fluid.
Notice!
If the expansion tank is filled above
the recommended level a loss of
heat may incur as a result of the self
circulation, and the space reserved
for fluid expansion will be reduced
9
3.5 Installing the hot water cylinder
Important: The base or wall fittings must be dimensioned to carry a full cylinder (app 150 kg)
3.5.1 Fittings on the hot water cylinder
The hot water cylinder is supplied with a range of connecting parts and a pump. Please follow the direc
tions for fitting these items. More details are on the next pages.
Important: Note the marking for flow direction on the pump and be
sure to fit it in a vertical position so that it can self ventilate!
Expansion tank
To the bottom of
the solar collector
Hot supply
line
The hot water cylinder must be connected to a
safety valve which will let excess pressure out of
the cylinder. Water will drip from the safety valve
when the temperature rises in the cylinder due to the
expansion of hot water. Therefore, it must be connected to a drain.
Piping with 16 mm
PP tubes
Flow meter
V4
Air outlet
V2
V1
12 V pump with
5 speed steps
Tube stubs are fitted to
V2 and V3 for filling and
starting aid
A trab prevents prevents the release of
heat
safety valve
Cold domestic water inlet
Hose nippel may be
put on V2 and V3 for
V3
filling and start up.
Pre-heated water out
Pre-installed
or new electric
water heater
Exist. safety valve
10
3.5.2 Mounting the fittings on the hot water cylinder
Piping arrangements may differ slightly from the example shown on the pictures.
When the hot water cylinder has been installed and is leveled, the tubes connecting the
cylinder to the SV30AWX solar collector and the expansion tank can be fixed.
Important: Read the instruction
Cylinder bottom
manual following the tank
Cold water in Pre-heated water out
Domestic water supply line may require safety fittings.
Please check the instructions given by the hot water cylinder
manufacturer.
This installation must be performed by a certified plumber.
Clamp ring
O-ring
Connecting tube
Union nut
Speed adjustment
for the pump at the
red bottom
Only 12
Volt for the
pump !!
EV brass collector: use the same principle as for the plastic
collector.
Take care that the clamp ring is straight and pressing against
the O-ring
Union nut
O-ring
ASTORE plastic fittings:
Start by fitting the O-ring, the clamp ring and
union nut to the tube. Subsequently, fit these
items into the connecting tube.
Do NOT use tools to tighten the union nut, only manual power!
Clamp ring
11
3.5.3 Connecting the domestic water
IMPORTANT NOTICE!
It is imperative that this installation of the domestic water is performed
by a certified plumber.
It contains no electric heater element.
• The cold water inlet is connected to the 3/4” stub for cold
water in (pos. c).
• The hot water outlet is connected to the 3/4” stub for hot
water out (pos. b).
• Overflow from the safety valve (pos. d) is led to the drain
• Hot water cylinder and piping are flushed and the cylin-
der is filled with water.
• The cylinder is vented through the nearest hot water tap.
• Allow the tap to stay open until all the air is out.
• Test cylinder and all fittings for leakages
Hot water cylinder with
100 L domestic water
From solar
collector
To solar
collector
b
Hot or preheated
water out
c
Cold water in
4.0 The SV30AWX in operation
Now it is time to connect the hot water cylinder to the SV30AWX solar collector and the expansion tank.
There are some important steps to follow.
First of all a specific quantity of water must be supplied.
Quantity of liquid:
SV30AWX approx. : 1,0 L
Heat exchanger in cylinder : 1,5 L
Piping: 2 x 8 m : 1,5 L
Expansion tank app. : 0,5 L ( at normal level)
Totalling approx. : 4,5 L
Now you are ready to fill the solar collector circuit with water using the steps stated on the next page.
d
Safety valve
12
4.1 Starting up a new installation:
(See illustration on page 10 for references)
1. Check that all connections are joined correctly and
2. ensure that the pump (12V) is disconnected
3. Fully open valves V4 an V5, V1 must be closed
4. Water (without anti-freeze) is filled via valve V2 until water reaches the expansion tank
5. Shut valve V2 and add water to via valve V3 until the water reaches the expansion tank
6. Check if there are any leakages and open V1, shut V3 and let the air out by the red handle.
4.2 Testing pump and circulation
1. Connect the pump (take care to use correct polarity!)
2. If the sun does not shine a 12V battery may be used to run the pump the yellow remark below on this page.
3. Check the flow gauge when the pump runs. Output should be at least 1 L/min
4. If the flow is below this minimum there is probably air in the system.
5. A power drill pump may be inserted between valves V3 and V2 (V1 must then be closed) to force circulation.
6. The pump sucks from valve V3 and blows into valve V2
7. Run for some minutes until there is no evidence of air bubbling in the expansion tank.
8. Test the system again with the ordinary pump
9. Add water if the liquid level in the expansion tank is below minimum
10. If there is flow in the system proceed to 4.3 Otherwise go back to step 5
4.3 Adding anti-freeze (for locations with risk of frost)
1. 4,5 L of water mixed with anti-freeze (fluid) is pumped in at valve V2
2. An equivalent volume is let out at valve V3
3. Watch the liquid level in the expansion tank
4. If the level is below minimum add water. When doing this turn off the pump to avoid any sucking in of additional air.
5. Do not fill the expansion tank to overflowing.
Note: If a battery is used as starting aid, the regulator should be bypassed and a 12V battery
connected direct to the pump. As long as you do this you may use the highest speed level on
the pump - step 5. This will normally enable the pump to push all air out of the collector and
tubing. When finished set back the speed level at 1 or 2. Be sure that the flow is 1 litre pr minute
or more.
4.4 Re-starting your SV30AWX
If you have turned off the fluid based part of your SV30AWX for a period, it is necessary to re-start it.
Whilst the equipment is already filled with liquid, this will normally cause no problem.
Please follow the instructions below:
• Check the liquid level in the expansion tank. Add water if it is below minimum
• Connect the pump
• If there is sunlight, the circulation will normally start
• Otherwise follow the instructions given above in 4.2. step 5
13
5.0 Venting the equipment
Switch off the pump (disconnect on separate switch or draw out a wire)
The pipe union on the pump case should be turned counter-clockwise until air emerges. When the liquid
starts flowing shut it again.
Switch on the pump and add liquid, if needed.
Note: It is not recommended that you switch off the pump when leaving the house, except for periods when
only warm air input is needed.
6.0 Adjustment
The installation is now ready to work and must be adjusted for optimal performance.
Adjustment should be made as soon as possible and on a sunny day.
6.1 Adjustment of the flow in the solar collector
Make sure that the system is well vented for instance by running the pump for a couple of hours
(see page 13). At low speed the flow should be minimum 1.0 L/min. The velocity varies according
to the amount of sunlight.
The flow is indicated at the very back of the white marking. Normally, the flow is higher than 1.0 L/min
which is perfectly OK.
If the initial flow is less than indicated above, check if the installation directions have been followed
correctly.
Reduced flow may be caused by air in the system or lack of liquid. You may force the liquid to
circulate by means of a power drill pump until the air is out. See page 13 for directions.
Be sure to read the flow on the correct side of the felt pad!
14
7.0 Performance
The installation has now been adjusted and is ready to perform. The SV30AWX solar collector will heat
the domestic water totally or partly. The separate electrical water heater will provide any after-heating
necessary when the solar collector does not produce enough.
To achieve power savings you should set the thermostat as low as possible on this water heater..
7.1 Automatic pump and fan performance
Fan and pump will start and stop automatically depending on the level of sunlight. The fan is switched off when the
room temperature exceeds the temperature set on the thermostat. This will result in more power for the pump
which will automatically speed up.
When the pump mode is on, the regulator will automatically try to start the pump. If the sun radiation is too low to
do this the fan will get started in stead.
If you put the pump mode on off the warm air production will increase. This you may do when not staying in the
house and need as much warm fresh air as possible.
The plant will perform at its maximum total kW when both pump and fan run simultaneously. In good sunlight the so
lar cell may run 2 - 3 fans together with the pump.
8.0 Maintenance
Responsibility for the maintenance of the equipment rests with the user. An annual service check is
recommended.
The SV30AWX requires a minimum amount of maintenance, but in order to obtain the
best economy of performance the following maintenance tasks should be carried out:
• Check the liquid level either direct on the expansion tank or by using the level control device.
• Check the concentration of anti-freeze. It must be sufficient to withstand minus 15ºC.
• Check the function of the safety valve
• Check that the electronic anode of the cylinder is connected in accordance with the instructions
Lukewarm water and a soft brush may be used to wash the SV30AWX solar collector.
9.0 Warranty and Insurance
9.1 Warranty
For warranty we refer to the sales and delivery conditions on the invoice.
9.2 Insurance
We recommend that you specify the SV30AWX to your insurance company.
15
Loading...