EDWARD MARCS PHILIPPINES INC.
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ecogen Heat Pump Water Heater
(Frequently Asked Questions)
Q: How does ecogen Heat Pump Water Heater work?
A: ecogen Heat Pump Water Heater works on the same principle as an air con or refrigerator in
the reversed cycle. It absorbs heat energy from surrounding air and released it into water.
Q: Does ecogen Heat Pump Water Heater works without water pump to produce hot water?
A: Yes. It can produce hot water with or without water pump. The hot refrigerant vapor will run
through the copper tube which surrounding the water tank and heat up the water without water
circulation.
Q: Do I need to install separate water storage tank?
A: No. ecogen Heat Pump Water Heater comes with the inbuilt water storage tank. We have two
different module sizes to suit the different demands of water capacity.
Q: Is there any added value for ecogen Heat Pump Water Heater?
A: Yes. It produces free cool air at about 10 degrees C less than the ambient temperature. This
cool air can be channeled to the desired location for “spot cooling” or ventilate an enclosed area.
Hence, it will reduce your air con equipment’s energy consumption.
Q: How does ecogen Heat Pump Water Heater reduce input energy cost as compare to
conventional electric water heaters?
A: ecogen Heat Pump Water Heater use electricity to transfer heat from one place to another
instead of generating heat directly. Therefore, they can be 400% more energy efficient than to
those conventional electric water heaters.
Q: How much will I save by using ecogen Heat Pump Water Heater?
A: For ecogen Heat Pump Water Heater, the energy input cost only 25% as compare to
conventional electric water heater. Thus the electricity consumed will be reducing by 75%.
Q: What is the different and advantages between ecogen Heat Pump Water Heater and others
heat pump water heater?
A: Most heat pump water heaters have their hot and aggressive vapor refrigerant tube immersed
in the storage water. This poses the danger of the storage water to be contaminated by the
refrigerant whether be the R134a or R22 which all contained the hazardous chemical called
Asphyxiant. ecogen Heat Pump Water Heater does not pose any threat of contamination to the
storage water in the event that the refrigerant vapor leaks because the refrigerant coil is not
immersed in the water.
Q: Does the maintenance cost of ecogen Heat Pump Water Heater High?
A: Compared to conventional fuel boiler, the maintenance cost is minimal. For ecogen Heat Pump
Water Heater only required yearly general inspection and cleaning of air vent.
Q: How does ecogen Heat Pump Water Heater help the environment?
A: The heating efficiency of ecogen Heat Pump Water Heater is 400% thus the energy input is only
25% of other conventional fuel boiler hence the greenhouse gas (CO2) emissions can be
reduced by 75% and this helping in reducing global warming.
(Frequently Asked Questions)
Q: How does ecogen Heat Pump Water Heater work?
A: ecogen Heat Pump Water Heater works on the same principle as an air con or refrigerator in
the reversed cycle. It absorbs heat energy from surrounding air and released it into water.
Q: Does ecogen Heat Pump Water Heater works without water pump to produce hot water?
A: Yes. It can produce hot water with or without water pump. The hot refrigerant vapor will run
through the copper tube which surrounding the water tank and heat up the water without water
circulation.
Q: Do I need to install separate water storage tank?
A: No. ecogen Heat Pump Water Heater comes with the inbuilt water storage tank. We have two
different module sizes to suit the different demands of water capacity.
Q: Is there any added value for ecogen Heat Pump Water Heater?
A: Yes. It produces free cool air at about 10 degrees C less than the ambient temperature. This
cool air can be channeled to the desired location for “spot cooling” or ventilate an enclosed area.
Hence, it will reduce your air con equipment’s energy consumption.
Q: How does ecogen Heat Pump Water Heater reduce input energy cost as compare to
conventional electric water heaters?
A: ecogen Heat Pump Water Heater use electricity to transfer heat from one place to another
instead of generating heat directly. Therefore, they can be 400% more energy efficient than to
those conventional electric water heaters.
Q: How much will I save by using ecogen Heat Pump Water Heater?
A: For ecogen Heat Pump Water Heater, the energy input cost only 25% as compare to
conventional electric water heater. Thus the electricity consumed will be reducing by 75%.
Q: What is the different and advantages between ecogen Heat Pump Water Heater and others
heat pump water heater?
A: Most heat pump water heaters have their hot and aggressive vapor refrigerant tube immersed
in the storage water. This poses the danger of the storage water to be contaminated by the
refrigerant whether be the R134a or R22 which all contained the hazardous chemical called
Asphyxiant. ecogen Heat Pump Water Heater does not pose any threat of contamination to the
storage water in the event that the refrigerant vapor leaks because the refrigerant coil is not
immersed in the water.
Q: Does the maintenance cost of ecogen Heat Pump Water Heater High?
A: Compared to conventional fuel boiler, the maintenance cost is minimal. For ecogen Heat Pump
Water Heater only required yearly general inspection and cleaning of air vent.
Q: How does ecogen Heat Pump Water Heater help the environment?
A: The heating efficiency of ecogen Heat Pump Water Heater is 400% thus the energy input is only
25% of other conventional fuel boiler hence the greenhouse gas (CO2) emissions can be
reduced by 75% and this helping in reducing global warming.
SUNDA SOLAR WATER HEATER
(Frequently Asked Questions)
* Does the collector have the correct orientation?
Check the correct southward deviation, the inclination angle of the roof, whether the collector is
covered by shade and whether the tubes are installed with optimal inclination angle.
* Is the collector correctly installed?
Are the tubes inserted into the header box? Is the manifold tightly fastened and stable? Are the
collector modules connected in series or according to the technical design?
* Is the heat transmission paste correctly applied?
* Are the vacuum tubes in perfect state?
Are the glass tubes broken or cracked? Is condensed water in the tubes? Is the selective
coating fading upward? The vacuum is likely to be lost if the surface temperature of the glass is
10K higher than the ambient temperature. In this case the old tubes have to be replaced.
* Are all tubes insulated?
Check whether hot water pipe, circulation pipe, pipe of solar loop, storage tank and relevant
fitting are all well insulated.
* Is the right heat transfer medium liquid used?
Only high temperature and anti-freezing medium should be used (Tyfocor LS or a comparable
one), the PH-value should not be lower than 7.
* Is the sensor of the collector in the right position?
The sensor of the collector must be installed on the outlet pipe of the collector (warm water side)
and must be completely inserted into the manifold.
* Is the sensor of the storage tank in the right position?
The sensor must be installed on the output pipe of the hot water.
* Is air in the system?
In case there is an air-noise when the pump is turned on and shut off, outgassing has to be
done. The manifold should be at the highest position of the collector or an auxiliary air-vent has
to be installed.
* Is the maximal area depended flow correctly adjusted?
First, the controller has to be set into the manual operation mode (100% pump output). Then the
desired maximal area depended flow has to be adjusted.
Rule of thumb for the area depended flow:
Collector system for the preparation of warm water: 40l/h x m² absorber area = area depended
flow
Through reduction of the area depended flow the desired temperature enhancement of the heat
transfer medium can be achieved.
Collector system for heating 25l/h x m² absorber area = area depended flow
* Is the operation point of the controller correctly adjusted?
Check whether it has been properly adjusted in advance. If the lowest temperature of the
collector is too high the controller has to be changed.
* Does the sensor have a correct measuring value?
Check the measured value and measure the resistance. Compare the measured value with the
specific value of the sensor.
* Is an unloading of storage taking place at night through gravity self-circulation?
The temperature of the thermometer which is installed in the solar loop should not increase at
night.
* Is the operation time of the drinking water circulation pump adjusted in the
optimum state?
(Frequently Asked Questions)
* Does the collector have the correct orientation?
Check the correct southward deviation, the inclination angle of the roof, whether the collector is
covered by shade and whether the tubes are installed with optimal inclination angle.
* Is the collector correctly installed?
Are the tubes inserted into the header box? Is the manifold tightly fastened and stable? Are the
collector modules connected in series or according to the technical design?
* Is the heat transmission paste correctly applied?
* Are the vacuum tubes in perfect state?
Are the glass tubes broken or cracked? Is condensed water in the tubes? Is the selective
coating fading upward? The vacuum is likely to be lost if the surface temperature of the glass is
10K higher than the ambient temperature. In this case the old tubes have to be replaced.
* Are all tubes insulated?
Check whether hot water pipe, circulation pipe, pipe of solar loop, storage tank and relevant
fitting are all well insulated.
* Is the right heat transfer medium liquid used?
Only high temperature and anti-freezing medium should be used (Tyfocor LS or a comparable
one), the PH-value should not be lower than 7.
* Is the sensor of the collector in the right position?
The sensor of the collector must be installed on the outlet pipe of the collector (warm water side)
and must be completely inserted into the manifold.
* Is the sensor of the storage tank in the right position?
The sensor must be installed on the output pipe of the hot water.
* Is air in the system?
In case there is an air-noise when the pump is turned on and shut off, outgassing has to be
done. The manifold should be at the highest position of the collector or an auxiliary air-vent has
to be installed.
* Is the maximal area depended flow correctly adjusted?
First, the controller has to be set into the manual operation mode (100% pump output). Then the
desired maximal area depended flow has to be adjusted.
Rule of thumb for the area depended flow:
Collector system for the preparation of warm water: 40l/h x m² absorber area = area depended
flow
Through reduction of the area depended flow the desired temperature enhancement of the heat
transfer medium can be achieved.
Collector system for heating 25l/h x m² absorber area = area depended flow
* Is the operation point of the controller correctly adjusted?
Check whether it has been properly adjusted in advance. If the lowest temperature of the
collector is too high the controller has to be changed.
* Does the sensor have a correct measuring value?
Check the measured value and measure the resistance. Compare the measured value with the
specific value of the sensor.
* Is an unloading of storage taking place at night through gravity self-circulation?
The temperature of the thermometer which is installed in the solar loop should not increase at
night.
* Is the operation time of the drinking water circulation pump adjusted in the
optimum state?
