sensor for low pressure solar water heater intelligent controller M-7 and M-8
Suitable for open loop solar Thermal water heater: low pressure solar water heater(CNP-58) and Pre-heated solar water heater.
| Model |
M-7 and M-8 sensor |
| NTC10K, |
B=3950 |
| Function |
adding water, control electric heating elements etc. |
The device type M-8 is fully automatically controlled by micro computer inside as well as designed with human personality.its sensor is adopted the advanced foreign technology which is avoid water leaking.water temperature and water level is displayed with large aized LCD.loading water can be automatically operated by its own.its main functions are water lever preset,low lever alarm,low water pressure loading,timer and manual control which makes this device safe convenient and practical.
1, Technical datas:
<1> Power: 220VAC±10%
<2> Size: 17x12.5x5cm
<3> Temperature detective precision: ±2°C
<4> Temperature detect range: 0~90°C
<5> Water level: 4 level
<6> Power loss: <5W
<7> Auto control supercharging pump/Electric heating belt ≤ 500W
<8> Electric heating ≤ 2000W
<9> Electric leakage cut off current: < 10mA/0.1s
<10> Solenoid Valve: DC12V for pressurized and non pressurized valves
<11> Pressurized working pressure: 0.02~0.8Mpa, for direct water supply
<12> Non pressurized: working pressure: 0 Mpa, for water supply and low pressure water supply
2, Main functions:
<1> Water level preset
<2> Leakage protection
<3> Intelligent water loading
<4> Constant water level loading
<5> Insufficiency water loading
<6> Pipe heat prevention
<7> Constant temperature heating
<8> Low water pressure water loading
<9> Auto control supercharging pump
<10> Dry heating prevention
<11> Power off memory
<12> All-weather water supply
<13> Intelligent heating
<14> Water temperture preset
<15> Temperature control water loading
<16> Water insufficiency alert
<17> Manual control
Quickly guidence
a, Free brand/LOGO print based on 20GP/40HQ quantity
b, 1% freee spare parts
c, our factory audited by SGS, TUV and BV
d, Sea Port: Shanghai or Ningbo
e, Payment terms: T/T, L/C, Western Union
f, Delivery time: 12 days after deposit in account
g, Certificate: Europe Solar Keymark EN12976/EN12975/CE/CCC/ISO9001/ISO14001/ ISO45001
Detailed Photos
Certifications
1,high efficiency solar collector
2,rock wool/glass firber insulation
3,KEYMARK,CE certified solar collector
4,Factory price
Heat Pipe Vacuum Tube Solar Collector Features
1) Can be matched with any low pressure, high pressure hot water system.
2) Use heat pipe for the heat conduction and can get a high heat absorbtion efficiency and rapid heat transfer.
3) Easy plug-in design and installation.
4) Corrosion-resist Aluminium manifold and frame.
5) Optional 38° /45° Frame can resists wind with a velocity of 36m/s.
6) Can supply hot water to large amount water needer.
7) Economical for hotel, school, domitory, hospital and tall high-buildings.
8) Non freezing
Material of Heat Pipe Vacuum Tube solar collector
1. Manifold Channel: 0.8mm thickness Red copper
2. Manifold Outer: 2.0 mm thickness Aluminum Alloy
3. Tube Size: 58mm x 1.800mm
4. Insulation layer: 40-45mm thickness Rock Wool /Polyurethane foaming
5. Hail resistance: 35mm
6. Max pressure: 6 bar
7. Frame: 1.8mm thickness Aluminum Alloy
8. Connections: 3/4inch
OUR SERVICE
1, Fast delivery, 40 feet container quantity will deliver in 7 days.
2, Experienced sales team assistant you, fast confirmation for every related questions from you.
3, Rich experiences for differenct Market (countries), kinds of customized design will be welcomed.
4, Assistant you load other goods with solar water heater in one container.
5, Installation guide and train
6, LOGO print and water tank and cartons.
FAQ
1. Is solar water heating a viable alternative to gas or electricity?
Solar should not be seen as a alternative to gas or electricity, but rather a supplement. Solar cannot totally replace the need for gas or electric heating as there are sometimes days when there is little sunlight. When averaged over a year, a correctly sized solar system can provide 60%-70% of a household's hot water needs. Providing more than this is unadvisable, as too much heat will be produced in the summer. The hot water system system can easily be automated so hot water is guaranteed regardless of sunlight levels.
2. How long will it take to recoup my investment?
QIRUI solar collectors are much more affordable than many other solar hot water heaters. For a household of 4, the price of a full system may not be too much more than a new electric or gas system. Depending on you location (solar levels) and current hot water usage the annual electricity or gas saving will differ. However in a normal household that spends 25% of its electricity bill on hot water heating, the full cost of the purchase may be recouped as quickly as 4-5 years in reduced bills. You will definitely make considerable savings during the life of the solar hot water heater.
3. Can QIRUI solar collectors be used in cold conditions?
Yes. QIRUI collectors can be used in temperatures as low as -30oC, although performance is greatly reduced in such extreme conditions. Good heat output is still achieved in mild sub-zero conditions.
4. What happens if one of the tubes is broken?
Firstly, tubes are very strong and not easily broken, but if the worst should happen, solar tubes can be replaced very easily. They are inexpensive and available though your local QIRUI distributor. The HAINING QIRUI solar collectors can operate with several broken tubes, but the efficiency will be reduced, so it is recommended that broken tubes be replaced immediately.
5. Will water be heated on a cloudy day?
Yes. Although the heat output of the solar collector is reduced on overcast days it will still be able to provide heating. If it is a heavily clouded day or raining, then more gas or electric boosting may be required to maintain water at the required temperature. This system will be automated so you don't have to worry about running out of hot water on a rainy day.
6. Can I use a solar collector with my existing hot water system?
Normally yes. Simple retrofit valves can often be used to allow solar to connect to your existing cold water inlet. If your tank cannot accept the solar input directly an additional storage tank can be installed to pre-heat the cold water prior to entering the existing tank.
7. Are the solar collectors noticeable on the roof?
If only the collector is mounted on the roof it should blend into the roof design quite well. HAINING QIRUI solar collectors are very thin and can be flush mounted on a roof. From a distance they look somewhat like a skylight. You may have to check with your local council regarding building restrictions when installing your solar collector. Click here to view installation photos.
8. Can QIRUI solar collectors be mounted on a flat surface?
Yes they may be mounted on a flat roof, or on the ground by using a stainless steel Flat Roof Frame. The collector should be installed at a minimum of 20o angle to ensure optimal heat pipe operation.
9. How do I protect my solar system during subzero temperatures?
If you have a system that is operating in areas with subzero temperatures then freeze protection must be implemented. The easiest means of preventing freezing is to use a controller with a low temperatures setting, so when the manifold temperature drops below a certain pre-set temperature (5oC/40oF), the pump will circulate, warming the collector with water from the bottom of the storage tank. The pump will not run continually, just periodically, the frequency of which will depend on the outside temperature. In extremely cold areas, a closed loop using a glycol/water mix may be appropriate.
10. Will the QIRUI solar collector be a fire hazard during hot, dry weather?
No. The QIRUI solar collector's components are all high temperature rated and non-flammable so even during strong sunlight with the circulation pump turned off (stagnation), the system will not catch alight or give off any sparks. The majority of the solar collector's components are stainless steel, aluminium, glass or glass wool. The manifold outlet should be fitted with a temperature relief valve, which will prevent the manifold temperature from exceeding 99oC / 212oF.
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