We have an answer for every question about PAC. FAQs about services
1. Why the system of Heat Recovery Water Heater doesn’t need to use electrical energy?
Answer : Because it has a connected system to exchange heat of refrigerant and water. As a result, the air conditioner doesn’t have to work hard and this helps save up on electricity bill as well.
2. What is refrigerant made of?
Answer: Freon or refrigerant used widely in household air conditioner is a CFCs. It has favourable thermodynamic properties which are unreactive chemically and safe. The desired thermodynamic properties are a boiling point somewhat below the target temperature, a high heat of vaporization, a moderate density in liquid form, a relatively high density in gaseous form, and a high critical temperature. Since boiling point and gas density are affected by pressure, refrigerants may be made more suitable for a particular application by choice of operating pressure. The popular Freon for household air-conditioner is R-22 (Freon-22.) Its boiling point is -40.8 'C.
3. If I have a PAC Heat Recovery Water Heater installed, will the air conditioner work harder?
Answer : No, it won’t. The air conditioning compressor will work more efficiently and consume less electricity. Moreover, it will extend the useful life of the air conditioner as well.
4. If I want to have a PAC Heat Recovery Water Heater stalled, do I need to do it with every air conditioner?
Answer : It depends on the usage, size of tank, and numbers of air conditioner. We have 50-200 litre tanks. The 100 litre tank and bigger sizes can be connected to 2 air conditioners.
5. What is the temperature of water we get from the water heater?
Answer : About 50-60 degrees Celsius without using electricity.
6. What kind of water faucet do I need if I have a PAC Heat Recovery Air Conditioner installed?
Answer : You need a mix faucet.
7. If I use the PAC Heat Recovery Water Heater for a long time, will it erode or get rusty?
Answer : PAC Heat Recovery Water Heater is made from stainless steel SUS 316 which is a medical grade stainless. It is clean, safe, and has excellent resistance to various forms of deterioration. Moreover, there are various sizes available for appropriate use.
8. What can the water inside the tank be used for? Why is it safe to use?
Answer : Water inside the tank can be consumed and used for various purposes such as showering, washing dishes, cleaning, cooking and washing clothes. There are 3 models of tanks: PAU, PAS, and AL. For PAU and PAS models, they are made of Polyurethane. For AL model, it contains special types of insulators which are Rockwool and Perlite. Heat prevention foam is also used in order to enable the water tank to keep heat for a long time. It also prevents heat from coming out through the tank and burn the user as well.
9. What are the qualifications of a PPR pipe?
Answer : The pipe is joined by a heat fusion process so that it has a smooth surface and prevents leakage.
10. What is a PPR pipe made of?
Answer : It is made of good quality plastic PP-R (80) from Europe. As a result, it has resistance to high temperature and UV-ray.
11. Is it possible to get hot water without turning on the air-conditioner?
Answer : You can purchase an electric heater which is an additional tool used to collect heat.
12. How many watts does a heater use? How long does the warm water last?
Answer : 1,500 watts. The water can be kept warm up to 3 days.
13. How does a PAC Heat Recovery Water Heater work?
Answer : A PAC Heat Recovery Water Heater generates hot water by using waste heat from air conditioner to get hot water without using electricity or other energy. It cuts the cycle of air conditioning systems at the tube of the liquid pipe (discharge) out of the compressor. The high temperature up to about 60-75 degrees Celsius with liquid pipe to tank. The water tank is filled with water. Refrigerant temperature will be taken through the heat exchanger inside the tank and make the temperature od water higher to 60 degrees Celsius. After the heat exchange, the refrigerant will flow out to the air conditioner system through condensing for ventilation as normal.
14. What are the differences between the 2 models (PAU and PAS) of PAC Heat Recovery Water Heaters?
Answer : 1. PAU model is made from stainless steel which is very durable. It will not chip, crack, or erode. Also, it resists rust, tarnish, and staining.
2. PAS model is made from stainless steel coated with white colour. It is not suitable to clean by rubbing too hard or using a strong liquid cleaner as it might scratch and eventually cause rust.
15. What are the differences between a PAC Heat Recovery Water Heater and a normal water heater?
Answer : A PAC Heat Recovery Water Heater generates hot water by using waste heat from air conditioner. It is different from a typical water heater as the typical water heater uses electricity. Therefore, using a PAC Heat Recovery Water Heater can save up 2 ways – energy and money. Apart from getting free hot water, the air conditioner connected with PAC will reduce the electricity consumption by exchanging heat from refrigerant and water ventilate through condenser. This process enables the air conditioner to work more efficient, more cooling with lower power. It costs down 10-30% and helps extend the useful life of compressor as well.
16. How long does the water can be kept hot without turning on the air conditioner?
Answer : About 3 days.
17. Is it true that if the air conditioner is off, the heating system in the hot water tank won’t start working and the water won’t be hot?
Answer : Yes, it is. Because the heat comes from the air conditioning system directly. But if the temperature in the water tank is not high enough, a water heater can help increase the heat.
18. If I have only one air conditioner, can I also use a hot water tank as well?
Answer : Yes, you can, because there are many sizes of tanks for you to choose from.
19. How long does a hot water tank last?
Answer : It depends on the usage pattern of each user.
20. How long does it take to install a PAC Heat Recovery Water Heater?
Answer : About 6 hours per set.
21. Will there be any issues with the connection of the systems afterwards?
Answer : No, there won’t. What we do is just connect the discharge of the compressor to the hot water tank and use water in that tank to absorb heat from the compressor (water temperature is about 60-75 degrees Celsius) so that’s how we get hot water in the tank. In addition, water is not harmful and fit for drinking.
22. How does a PAC Swimming Pool Heat Pump work?
Answer: The mission of PAC Swimming Pool Heat Pump is to draw the heat warm air into pool water or transit the energy of pool water to air. That is the way it heats up or cools down the pool water. Driven by electricity, the compressor compresses the Freon into gas with high temperature and high pressure; then the gas goes into the condenser (tube and fins heat exchanger), becoming liquid with low temperature and low pressure by heat exchange with outdoor air; Through expansion valve, the liquid refrigerant goes into the evaporator accordingly and the pool water is cooled down.
23. What is the maintainability?
Answer : 1. Release all water from the hot water tank and put some water back into it to clean the sludge at the bottom of the tank.
2. Check the ability of pressure relief valve to see if water is flowing smoothly.
3. Check the valve and other compositions and make sure that there is no leak.
4. Check the ability of all tools.
24. Can it be safely used with 110 v system?
Answer : Yes, it can. But you need an electric transformer to transform 110 v to 220 v first.
25. Is the system of a PAC Heat Recovery Water Heater similar to a normal water heater?
Answer : Not, it is not. Normal tank uses electricity to generate heat while our hot water tank gets hot water from the air conditioning system.
26. What is the difference between hot water from a normal water heater and a PAC Heat Recovery Water Heater?
Answer : You can adjust the temperature of water from a normal water heater but you can’t do that with water from PAC Heat Recovery Water Heater unless you have a mix faucet. However, you can save up 30-60% on your electricity bill using PAC Heat Recovery Water Heater.
27. Do the PAC Heat Recovery Water Heater and the water heater made in Japan have the same work process?
Answer : No, they don’t. The water heater made in Japan uses gas to heat water while hot water from the Heat Recovery Water Heater comes from the air conditioner which helps save more energy and electricity bill.
28. What are the advantages of PAC cleaning spray?
Answer : It’s efficient to eliminate odors and remove dust and grease on the cooling coil plate. It’s also very easy to use as you don’t need to rinse it with water. Moreover, the spray won’t erode or damage the cooling coil plate and other tools. There’s no strong and dangerous odor, and it helps increase efficiency of the air conditioner. Most importantly, PAC KLEAN can kill germs/viruses/bacteria that cause diseases such as 2001 flu and etc.
29. How many sizes of water heater tanks are there?
Answer : 5 sizes.
30. What are the qualifications of PAC KLEAN A/C Condensate Drain Pan Cleaner Tablet?
Answer : It helps reduce bacteria, mucus, and fungi, prevent a clogged drain, kill germs, eliminate disagreeable odor, and freshen the air. Also, it saves money and is safety and easy to use.
31. What are the qualifications of PAC KLEAN SPLIT UNIT AIR CON FILM COIL CLEANER?
Answer : It helps reduce bacteria, mucus, and fungi, eliminate disagreeable odor, and freshen the air. Also, it saves money and is safety and easy to use.
32. What is the advantage of PAC Heat Recovery Water Heater?
Answer : 3 models of PAC Heat Recovery Water Heaters can be installed in any room in the house and there is no limitation of position as well.
33. How many models of PAC water tanks are there?
Answer : 3 models. Each model has different functions.
34. What are the qualifications of a Heat Pump Model for housing?
Answer : Here are the qualifications of a Heat Pump Model for housing:
- Base and outer structure are made of Galvanized steel. Compact and easy to move.
- Titanium coil that has great resistance to corrosion up to 15 years.
- High-quality compressor with R410a Freon.
- Controlled with a fold switch when there’s no water running.
- Intelligent control system that can be adjusted according to your preference.
- Can be controlled by an LCD touch screen monitor.
- Coated heat exchanger fin
- Automatic defrost system
- Every model is fully inspected at each stage of manufacture.
35. What are the qualifications of the Heap Pump used in businesses?
Answer: Here are the qualifications of the Heap Pump used in businesses:
- Base and outer structure are made of Galvanized steel. Compact and easy to move.
- V-shaped coil that is useful for air flow and defrosting. Great resistance to corrosion up to 15 years.
- High-quality compressor with R410a Freon
- Controlled with a fold switch when there’s no water running.
- Intelligent control system that can be adjusted according to your preference.
- Can be controlled by an LCD touch screen monitor.
- Coated heat exchanger fin
- Automatic defrost system
- Every model is fully inspected at each stage of manufacture.
- Designed to handle with many heat pumps in order to fit any size pool.
36. What is the temperature of water from the hot water tank?
Answer : About 60 Celsius.
37. What are the qualifications of PAC Duallsave Feature / Model?
Answer : Here are the qualifications of PAC Duallsave Feature / Model:
- The latest innovation that is more than just an air-conditioner.
- Save more energy than energy efficiency air conditioner because it helps not only reduce air conditioning energy costs in 25% but also gets free hot for free.
- Combination of air-conditioner and water heater.
- Can be installed in a limited space. Also you can cut cost in your home as you don’t need to get a water heater.
- Strong and durable as it is made of world-class materials.
- 2 years warrantee for all spare parts and 6 years warrantee for the compressor.
- Increase efficiency with the standard built-in instrument for supporting the water heater when the air conditioner is on shortly.
38. How big of the model do business places like hotels, tall buildings, and factories need?
Answer : It depends on its water usage pattern and the air-conditioner model.
39. What are the compositions of a hot water tank?
Answer : 1. Stainless steel outer jacket2. Stainless steel pressure tank3. Insulation 4. Heat exchanger pipe 5. Hot water outlet
6. Water inlet 7. Electric heater (if any)
40. Why do the PAS and PAU models have different limitation of warranty duration?
Answer : It is 5 year warrantee for inner element. For the outer jacket, it depends on how it is used.
41. How many models of water heating system are there? What are they?
Answer : There are 5 models of water heating systems which are:
1. PAC Heat Recovery Water Heater
2. PAC Heat Recovery Air Conditioner
3. PAC Household Heat Pump
4. PAC Swimming Pool Heat Pump
5. PAC Water Cooled Condenser
42. Why does a PAC Heat Recovery Water Heater need to be installed near a condenser?
Answer : For suitability and speed of production of hot water.
43. How many PAC Heat Recovery Water Heaters can be connected to an air-conditioner?
Answer : 2
44. What are the qualifications of a Heat Pump?
Answer : A Heat Pump is designed to keep heat by using Rockwool insulation. Moreover, every complement inside the heat pump is made from stainless steel which is corrosion resistant and rust resistant, therefore, there’re no problems about electric shock and leakage and water is clean and safe.
45. How does the system of PAC Recovery Water Heater prevent electrical shock, leakage, and hot water burn?
Answer : The system doesn’t use electricity, therefore, it’s unnecessary to install any electrical safety kits. But for the accessory like the 1.5 kW. electric heater, it should be connected to the ground wire to prevent electric shock and leakage. For hot water burn prevention, you can install a mix faucet and a thermo valve which will control the temperature of water.
46. After the installation of a PAC Recovery Water Heater, do I need to buy the cooling coil cleaner or any kits to prevent electrical shock and leakage as well?
Answer : No, you don’t. But you can get the accessories such as Thermo valve which will control temperature of water coming out from the tank. As for the cleaning spray, it will help enhance the ability of the cooling system because if you keep the air conditioner clean, it can cool up faster and you get fresher air as well.
47. Do I need to buy a stand for a PAC Heat Recovery Water Heater as well?
Answer : Normally, a PAC Heat Recovery Water Heater already comes with a wall mount bracket so you don’t need any more accessories. However, if the Heat Recovery Water Heater can’t be mounted on wall, you will have to buy a wall mount bracket.
48. What are the advantages and disadvantages between of PAU (made from stainless steel 304) and PAS (made from stainless steel coated with white colour) models?
Answer : For PAU model made from Stainless Steel SUS 316 which is the same grade as medical instruments, it’s durable, clean and non-corrosive lifetime of work. For PAS model, it’s focuses on modern design. However, the outer jacket is covered with white colour, it can be scratched and get rusty afterwards.
49. When the weather is cold and I don’t want to turn on the air-conditioner, is it possible to get hot water?
Answer: A 1.5 kW. heater can be installed in a PAC Heat Recovery Water Heater to generate heat when the air conditioner is off or not fully working like when the water is cold or when you are sick and don’t want to turn on the air conditioner. This heater consumes very little electricity to operate.
50. How long does the hot water in a water heater typically stay sufficiently hot?
Answer : About 48 hours or 2 days without turning on the air-conditioning after the heater tank has collected enough heat.
51. Can a PAC Heat Recovery Water Heater work with a solar water heater?
Answer : Yes, it can. But for your house, I don’t recommend it because it is not necessary. The heat from the air conditioner and the 1.5 kW spare heater is already adequate for the bathroom and the kitchen.
