Invest ISP 2.0 User manual

INSTALLATION MANUAL
Solar Water Heater
ISP 2.0
Please read this installation manual carefully before
using the appliance
Keep this manual in a safe place

CONTENTS
I. Collector technical information 1
1.Specification 1
2.Pressure drop curve for one collector 2
3.Installation angle 2
4.CollectorDrowning and dimensions（in: mm） 3
5.Transportation and handling 4
II. Heat exchange medium for solar heating system 4
Ⅲ.Introduction of the lightning arrestor 7
Ⅳ.How to mount and fix the collector 8
A.Installation for sloped roof 9
1.Tile roof 9
2. Color steel roof 15
B.Installation for flat roof 17
1. How to prefabricate the foundation of the collector 17
2. How to mount the support for the collector 17
3. How to mount the collector 19
4. Sample drawing for the mounted collector 20
C.Installation for vertical wall 21
1. When the collector is mounted to the external wall vertically 22
2. When the collector is mounted to the external wall not vertically 24
Ⅴ.Pipeline connection 27
1.Connection proposal for solar system with 1 panel 27
2.Connection proposal for solar system with 2 panels 28
3. Connection proposal for solar system with 3 panels29
4. Connection proposal for solar system with 4 panels 29
VI. Special installation and maintenance considerations 33
Made in China
Year of Production: 2009

I. Collector technical information
Model ISP 2.0
Net Dimensions (mm ) 2002 X 1025 X 80
Packing Dimensions (mm ) 2070X1118X138
Panel Size (m2) 2.05
Gross Area(m2) 2.0
Weight of collector (kg ) - empty 38.5
No. riers 8
Fluid capacity ( litres ) 1.5
Riser Dimensions ( mm ) 10 X 0.71 (Round)
Header Dimensions ( mm ) 22 X 1.0 X 1080
Media Propylene glycol OR Potable water
Maximum test pressure ( Mpa ) 3Mpa
Max. operation pressure 1Mpa
Insulation type Glass wool (covered with Black glass bre eece)
Insulation density 50kg/m3
Insulation thickness base ( mm ) 40
Insulation thickness density sides 50kg/m3
Insulation thickness sides ( mm ) 25
Absorber plate coating type TiNox
Aperture area ( square metres ) 1.87
Absorber plate thickness ( mm ) 0.12
Absorber plate dimensions ( mm ) 1880 X 962
Absorber plate material Copper
Absorber n Spec (mm) 122
Absorber performance a˜95%±2%
Reectivity/ Emissivity performance e=4%±2%
Glazing type Tempered patterned glass
Glazing seal type EPDM
Glazing thickness ( mm ) 4
Glazing transmittance 91%
Glazing iron content Low
Casing thickness ( mm ) 0.5
Frame material Anodized Aluminium alloy frame
Backing sheet Aluminium sheet
The maximum operational temperature（℃）
Stagnation temperature at 1000W/m2and 30
℃
120
199
The maximum snow and wind load（Kg/m2）100
1. Specifications
1

The four major factors that impact the pressure drop：
The quantity of the liquid owing through the collector• ：When the diameter and
the roughness of the riser pipe and header pipe xed, the pressure drop increases
along with the quantity increase of the liquid owing through the collector.
The diameter of the riser pipe and header pipe for the collector•：When the
roughness of the inner surface of the pipe and the liquid quantity is xed, the
pressure drop increases along with the decrease of the diameter.
The roughness of the inner surface of the riser pipe and header pipe: When the•
liquid quantity and pipe diameter is xed, the pressure drop increases along with
the increase of the roughness of the pipe’s inner surface.
The liquid viscosity: when other conditions are the same, the pressure drop •
increases along with the viscosity increase of the liquid owing through the
collector.
How to select the tilt angle α for mounting the collector:
When the solar system is applicable in four seasons: α=β •
When the solar system is used mainly in summer: α=β-10o •
When the solar system is used mainly in winter: α=β+10o •
Note: α——Title angle for mounting the collector• ；
β——Geographical latitude of local position
2. Pressure drop curve for one collector
3. Installation angle
2

4. CollectorDrowning and dimensions（mm）
3

The 16 holes (φ9) above are prepared for xing the collector
The introduction of the relevant heat conducting media of the plate heat collecting system
Heat exchange medium for solar heating system The indirect circulation system must use heat
exchange medium to avoid frozen if installed in area with icing weather. propylene glycol is
recommended to be used as the antifreeze liquid ; The indirect circulation system installed in area without
icing weather can use water (mix with slow release and anti-bubbling agent )as heat exchange medium
but should notice the sediment problem. The indirect system is not recommended to be used by the
collector.The table below contains the valves of the freeze points of the propylene glycol antifreezes
which concentrations are different. The concentration of the propylene glycol antifreeze to be filled in
depends on the lowest temperatur e of the application area. (for your reference only）
II. Heat exchange medium for solar heating system
Note: a collector need at least 2 person to handle.
5. Transportation and handling
4

Concentration
（volume
percent）
5 10 15 20 25 30 35 40 45 50 55 59
Freezing point ℃-1.7 -3.3 -5.3 -7.2 -9.7 -12.8 -16.4 -20.9 -26.1 -32 -39.7 -50
The processes for lling liquid:
1. Inspect the pipes which have been connected to make sure that the check valve, gate valve, lter and
circulation pump are connected correctly, and that the pipes and connectors have been tightened while
the pipes have been xed rmly (for the pipe connection, see the gure below);
2. Pressurization test（Pressurizing with water）:
(Principle schematic drawing of the heat collecting system)
5

(Schematic drawing for the liquid lling components)
Open the automatic exhaust valve rst and close the valve at the inlet of the expansion tank. Connect
the outlet of the liquid lling pump to valve 1 and ensure that the water ows in the same directions for
mounting check valve. Connect the suction nozzle of the pump and water-return pipe to the liquid lling
tank. Close valve 2 and open the valve below the highest automatic exhaust valve on the array of the
collector. Allow the liquid lling pump to ll water into the system. Observe the water owing back and
close the water return valve 3 (marking it) when you nd that the returned water is clean and ows evenly,
and there are no more bubbles. Pressurize it at the pressure which is 1.5 times the pressure for opening
the relief valve. Observe the connection points carefully to nd out if there is any leakage or oozing. It
passes the test when there is no leakage or oozing, and the pressure drop is less than 0.02MPa in 10
minutes.
Attention:
a. The test pressure is 1.5 times of the pressure for opening the relief valve;
b. Notice the relative position of the relief valve and manometer.
3. Pipe cleaning:
Pipes shall be cleaned before and after testing the pressure of the system by ushing them and cleaning
the lter. Then drain the liquid from the pipe so as to ll antifreeze; if the liquid is not drained up from the
system, you can blow the liquid out with a blower; blow it until it is dried up.
4. Antifreeze lling:
The process for lling antifreeze is same as the above. The different work is that the valve connecting
to the expansion tank must be opened before lling the antifreeze; it should also be noticed that the
pressure for lling the liquid must be consistent to pre-lling pressure of the expansion tank, 0.15MPa to
0.2MPa in general;
5. Close valve 4 below the automatic exhaust valve when antifreeze is fully lled to prevent the medium
vaporizing when the system operates;
6

Requirements on maintenance and notices:
1. If system will stay idle for long time, cover the collector with a nontransparent lm and disconnect it
from the power supply to prevent overheating of the collector.
2. Check the system regularly to nd out if it operates properly; check the manometer to know if the
pressure valve is normal (normally pressure should be at least 1 Bar); if the pressure value is under
standard, check if there is any leakage on the pipes; if not, antifreeze shall be relled into the system.
3. If the system needs replace the antifreeze liquid, it shall be emptied rst. The liquids in the pipes
shall be drained up so as to ll antifreeze into it. If liquid cannot be drained up from the system, dry it by
blowing the system with a blower; don’t stop blowing until the system is completely dry.
4. Check the low temperature resistibility of the antifreeze regularly（For the detailed interval, consult the
local antifreeze supplier）.
5. Pull the lever of the relief valve monthly to ush the valve seat and valve clack; keep dirt and scaling
off its sealing surface since they would cause leakage or Open/Close failing. Check if the valve can be
opened or closed normally.
Ⅲ. Introduction of the lightning arrestor
Collector should be mounted fully protected against lightning strikes. If there isn’t any lightning protect
facility,a lightning rod or grounding line is required. The following is the drawing for mounting the lightning
rod on a at or sloped roof:
●The drawing for mounting the lightning rod on a at roof:
7

The lightning rod can be welded onto a frame, or an independent lightning rod can be manufactured and
it can be xed with a wire rope.
●The drawing for mounting the lightning rod on sloped roof:
Making an independent lightning rod is recommended; it can be xed with a wire rope and the
equipotential bonding shall be applied between it, the frame and the lightning belt.
Notes:
1. If the building has a lightning arrestor, make sure local professional check if the collector is well
protected by the lightning arrestor.
2. If the collector can be protected by existing anti-lightning facility , the frame mounted on-site shall be
connected to the existing lightning belt with equipotential bonding. The connection, connection wire and
anti-corrosion method should follow the local regulation on the anti-lightning system design .
3. If the collector cannot be protected by existing anti-lightning facility, installing a lightning rod is required;
Select the materials, height and xing method should be done by professional engineers; the lightning rod
and its frame mounted on-site shall be connected to the existing lightning belt with equipotential bonding.
The connection, connection wire and anti-corrosion method should follow the local regulation on the anti-
lightning system design .
Ⅳ.How to mount and fix the collector
Mounting and xing the collector in different situations:
How to mount it on a sloped roof;•
How to mount it on a at roof; •
How to mount it on a wall;•
8

For different roof type:
T tile roof:•
T color steel roof:•
How to assemble the ttings of the collector
①How to connect and x it with batten
1. Tile roof
A.Installation for sloped roof
9

F

1:Channel steel 2:Collector xing hook 3:Collector connector （There is a wrong mark in the
drawing）4:Wood screw 5:Angle iron piece 6:Bolt 7:Nut
Step 1: Remove the tile from the place where the collector shall be mounted and xed.
Step 2: Prepare angle iron pieces 5 (L40*70*120*4); x them onto the roof beam with wood screw 4 after
drilling its side wall;
Step 3: Weld the bent collector connector 3 onto the angle iron piece 5 (they can be weld prior to
mounting them);
Step 4: Connect the drilled channel steel 1with collector connector 3 with bolt 6.
②How to connect and x the prepared bolt
G

1:Channel steel 2:Collector xing hook 3:Collector connector （There is a wrong mark in the
drawing）4:Prepared bolt 5:Bolt 6:Nut
Step 1: Build M12 bolt 4 onto roof with concrete;
If bolt 4 is not built in on the roof in advance, the collector can be xed with an expansion bolt during
mounting, but waterproong measures shall be taken.
H

Step 2: Prepare the collector connector 3, drill holes on its bottom and x it with bolt 4.
Step 3: Fix the drilled channel steel 1 and collector connector 3 with bolt 5.
（2）Put tile back to its original place when the collector connector is assembled.
Fix the channel steel with collector connector with bolt 5, mount the collector xing hook 2 onto the lower
channel steel, cushion them with rubber pad 4, mount collector 1 onto it, hook the lower edge of the
collector 1, x the upper edge with the xing hole on the outer frame, and connect collector and the xed
channel steel with bolts.
I

1:Collector 2:Collector xing hook 3:Channel steel 4:Rubber pad
J

2. Color steel roof
K

1:Channel steel connector 2:Nut 3：Gasket 4:Rubber gasket 5:Collector xing Bolt 6:Spring
shim 7:Nut 8:Color steel plate 9:C steel
Step 1:Drill holes on the color steel and C steel;
Step 2:Insert the collector xing bolt into the holes drilled; assemble nut 7 and spring shim 6 in order and
tighten them; assemble nut2, gasket 3 and rubber gasket 4 in sequence with the collector xing bolt 5; as
it is just for sealing, don’t make them too tight;
Step 3:Fix the channel steel connector to the collector xing bolt 5.
1:Channel steel
2:Collector fastener
3:Bolt
4:Nut
L

Step 4: Prepare the hole-drilled channel steel, x the collector fastener 2 with channel steel 1 with bolt 3
and nut 4; screw them up.
Step 5: Fix the collector with the xed channel steel with bolt through the xing hole on the outer frame of
the collector.
1. How to prefabricate the foundation of the collector
Select a proper foundation for the collector according to the actual roof condition, which may be a eld
casting concrete frusta or concrete brick. No matter which way is taken, the top of the foundation for the
collector shall be leveled.
B.Installation for flat roof
2. How to mount the support for the collector
（1）Mounting steps
M

1: Bottom rod of the support 2: Vertical rod of the support 3: Tilted rod of the support 4 and 7: Bolt
5 and 8: Nut 6: Channel steel 9:Collector xing hook
Step 1: Fix angle iron 1 onto the concrete foundation with expansion bolt;
Step 2: Make angle iron 2 and 3 a triangle frame with bolt 4 and nut 5;
Step 3: Fix the channel steel 6 not the triangle frame assembled in step 2 with bolt 7 and nut 8;
Step 4: Anti-corrosion treatment: When the support is nished, treat it with hot galvanizing or paint it to
prevent corrosion. First remove rust, oil or dirt off the angle iron and channel steel, apply the antirust paint
on it twice and apply nish paint twice.
Step 5: Mount the collector xing hook 9 onto the lower channel steel and cushion them with a rubber
pad.
（2）Assembling the nished support
N