NS-200WB/NS-300WB
Evacuated Tube
Solar Hot Water System
Operating Manual
N rth Solar
“Solar Hot Water Solutions”
ank you and congratulations on your new Solar Hot Water System,
NS-200WB/NS-300WB.
Not only will you be getting free hot water, you are also contributing to
reducing carbon emmissions and helping future generations maintain a
sustainable environment.
North Solar prides itself on the ‘High Quality’ products, ‘High Client
Satisfaction’ and a growing reputation for environmentally sustainable
solar and energy products.
To get the most out of your solar hot water system, please read the instruction manual before using or installing.
e information in this manual includes technical data, maintanance,
problem solving and precautions.
As our products are continually being improved, there may be some differences between images and some specications. If you have any concerns, please refer to our website which will have the latest information
on all our products.
North Solar is happy to suggest possible solutions with our years of experience, however this should in no way be taken as explicit instructions
and recomendations on tting your new product.
It is important that all products are installed by a suitably qualied professional and adhere to all local Laws and Regulations.
Your registered builder or registerd plumber are the most qualied to
understand your local legal and building specic requirements
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N rth Solar
“Solar Hot Water Solutions”
7
4
2
10
6
Construction of NS-200/NS-300
1. Outer tank
2. Heat Insulation Layer
3. Inner tank
4. Wetback input/output
5. Water tank
6. Water Inlet & outlet
8
9
11
12
13
7. Heating element input
8. Vacuum tubes
9. Frame
10. O-ring Seal
11. End Bar
12. Plastic support for vacuum tube (saddle)
13. Anti-dust seal (black, on tube)
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“Solar Hot Water Solutions”
Technical specications:
Quick details:
- Brand Name: North Solar
- Model Number: NS200WB
- Capacity: 200L
- Type: Evacuated Tube
- Tank Pressure: Unpressurised
- Circulation Type: Direct / Open Loop (Active)
- Heating System: ermosyphon (Passive)
- Connection Type: Direct-Plug
- Installation: Bracket/stand
- Housing Material: Stainless steel plate
Certication:
- Watermark
- AS 3498-2009
Material: Stainless steel, Aluminium, Copper, Glass, Borax
MAIN TANK
- ickness of the stainless steel (SS):0.4mm
- Quality of SS: food grade 304-2B
- Pressure test of heat exchanger: 4 Mpa
- Pressure rating of copper coil heat exchanger: 40 kg
- Heat exchange unit: Copper coil – length=25m (NS-200), 35m
(NS300), diameter=12mm, thickness=0.8mm
- Insulation: 50mm high density integral polyurethane foam
- Seals: silicon rubber
VACUUM TUBE
- Composition: single target vacuum tube – super hard borax and
silica glass
- Eciency 93%-94%,
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“Solar Hot Water Solutions”
- Vacuum tube size: 58x1800mm
- ickness of the glass in tubes: 1.6MM
- Hail rating:25mm(dia)
Special-Features
A. Provided the hot water years, maintanance free with no moving parts.
B. Hail, wind and frost resistant .
C. Tri-re special high-temperature tube with high infra red absorbtion
rate.
D. Polyurethane foam to reduce the heat loss, heat preservation time is at
least 48 hours, water is still warm aer 100 hours .
E. Inner tank is made of SUS304-2B food grade stainless steel.
F. High temperature resistant and durable silicon O-ring .
G. Auto-ll header tank
h. Designed for lifespan in excess of 10 years
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“Solar Hot Water Solutions”
INSTRUCTIONS FOR INSTALLATION
1. Transport and install all components carefully. e Vacuum tubes
are strong and can cope with hail, but they are also fragile glass and will
break if dropped.
2. e NS-200WB/NS-300WB needs to be installed in a place with as
much sunlight as possible to produce maximum hot water.
Shady places will produce hot water, however not as eective as direct
sunlight.
A three metre free of obstructions radius is highly recommended.
Ambient temperature does not have a signicant eect on infra-red absorbance.
It is important that the unit is attched to a strong structure like roof
joists, structural timber or steel beams.
3. Make sure all vents are not obstructed. As this is not a pressurised
tank it is important the exhaust is allowed to breathe. If blocked, the tank
will expand and contract with the heat produced by the water and damage is inevitable.
4. Attach the stand to the roof with coach screws or bolts (please refer to
your local authority or Registered builder for Regulation requirements)
Aer attaching the stand to its permanent solid structure, place the main
tank on the stand making sure the bolts on the tank are aligned into the
slots on the stand (you will need to remove the nuts on the holding bolts
before placing it on the stand). e holding bolts have 10mm adjustment
allowance to make it easier to align. Put the nuts back on the bolts, but
do not tighten them.
5. Place the dust seals about 20cm down the tubes, use dishwashing liquid to lubricate the tube rst.
Place the tubes into the tank using dishwashing liquid to lubricate the
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“Solar Hot Water Solutions”
top of the tube. (refer to tube insertion instructions). Position the dust
seals back up the tubes towards the tank
When vacuum tubes are empty and hvae been exposed to the sun, the
interior temperature may reach above 250 °C .
DO NOT ll the tank if the tubes have been exposed to direct sun for
any amount of time while putting the system together. ere is a chance
of thermal shock and the tubes may crack and shatter if they are hot and
lled with cold water.
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Isolation
Header tank
Hot & Cold tap
Isolation
Header tank
Hot & Cold tap
“Solar Hot Water Solutions”
Installation of multiple units
Vent
Heat exchange coil
valve
Vent
Heat exchange coil
valve
Tempering valve
Tempering valve
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“Solar Hot Water Solutions”
Diagram for installation on a at roof
General information about solar hot water systems
Once the unit is installed on the roof, the internal tank temperature
can reach over 90oC even when external ambient temperature is below
-10oC.
It is important to use appropriate piping to cope with high temperature
and pressure (refer to your Registered plumber for local regulations).
Copper piping is ideal due to its strength, non-odour, heat resistance,
and not being prone to cracking in freezing temperatures.
Checking your heater
Aer your unit is installed and plumbed in, make sure it is not shaded by
trees or other objects.
e tubes should face North to receive the most sunlight during the day.
It is IMPORTANT that there are no leaks in any pipes, joins, connectors
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“Solar Hot Water Solutions”
or valves. If the unit leaks and water enters the insulation in the tank,
the thermal eciency will be dramatically reduced.
Vacuum tubes need to be properly inserted so they are sealed and not
leaking any water.
If a vacuum tube appears milky white, it signies the tube has a crack
and needs replacing. is will only happen through misuse or by accidently damaging the tube. Once installed correctly the tubes will not
leak.
Filling the tank
IMPORTANT!
If not in the shade, ALWAYS make sure the tubes are covered with a
white sheet or similar prior to lling the tank.
If the tubes heat up prior to lling, there is a chance of one or more of
them cracking or exploding.
Filling two hours aer sunset or before sunrise is the safest time.
REMEMBER internal tube temperatures in direct sunlight can reach 250
o
C.
Tube maintanace
e vacuum tubes need minimal maintanance, however their eciency
can decrease if they are covered by dirt or dust. It is recommended you
keep the tubes clean by washing them with a dishwashing liquid or soap
if they have been aected by seasonal conditions.
Water quality
Rain water
Clean rain water is highly recommended to ll and top up the main
tank.
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“Solar Hot Water Solutions”
Rain water will give you the longest lifespan from your North Solar hot
water system.
A single anode rod is benecial to attract corrosive elements in water.
Hard water
If you live in an are with hard water, it is strongly recommended to use 2
anode rods to absorb
Anode rods are designed to attract corrosive elements in the water,
thereby diminishing corrosion.
ANODE RODS
North Solar sells high quality anode rods and highly recommends installing 1-2 in the rst and last vacuum tube. is prevents corrosive
material from water impurities depositing inside the tank, piping and
vacuum tubes.
Placing anode rods in the vacuum tubes ads the advantage of not having
any more holes in the tank then necessary, reducing the chances of leakage and corrosion.
northsolar.com.au 0435 016 869
N rth Solar
“Solar Hot Water Solutions”
4
1. Inlet water hole
2. Outlet water hole
3. Header Tank Exhaust hole
4. Main tank exhaust hole
Product feature
1. Automatic water feeding tank with oat valve
2. All parts composed of stainless steel and brass
3. Cold and hot water pipes are separated, avoiding scale build up and
damging the oat valve improving lifespan of the unit
4. Double insulated preventing frost damage in frost prone ares
5. Somple to install
6. Time saving by automatically topping up the water in the main tank
7. Water pressure tolerant for and unstable areas
northsolar.com.au 0435 016 869
N rth Solar
“Solar Hot Water Solutions”
northsolar.com.au 0435 016 869
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