Low-cost and Eco

For Bath, shower, washing.
エコキュート
Natural refrigerant（CO2）heat pump water heater
The most utilized Eco-cute for industrial use in Japan is...
ITOMIC
Industrial-use
Eco-cute
Low-cost and Eco-friendly
heat pump water heater.
Registered as specified procurement items
in the Law on
Promoting
Green Purchasing.
「日本イトミック」
Prizewinning
The products are subject to change in specifi cations for improvement without notice.
Received the 9th Award for Power Load Leveling
Equipment and Systems from the chairman of the Heat
Pump & Thermal Storage Technology Center of Japan.
ITOMIC Ind
has
Registered as specified procurement items
in the Law on
Promoting
Green Purchasing.
Storage tank unit 3,000ℓ
Heat pump unit
Remote
controller
ITOMIC brand Eco-cute is the first of its kind sold in the world.
Itomic has know-how accumulated for half a century as a dedicated manufacturer of water heaterswe offer a wide variety of hot-water supply heaters.
【Kitchen】
Dish washer
Wash bas
Floor washing
Taps
Shower
Bathtub
【Bathroom】
Kubota Corporation Keiyo Factory
Nippon Express Co., Ltd.
The Asahi shimbun Company
1
Trest-Inn Tamachi
Hosei University Junior and
Senior High School
ustrial-use Eco-cute
extensive experience in supplying hot water.
sin
【Rest room】
Sales record of Eco-cute
ITOMIC Ind
Industrial-use
strial se EcoEco
cute is the most utilized Ecocute for industrial use in Japan.
【Business category】
Nursery homes
Offices
Factories
Education facilities
Public facilities
Hotels
Dormitories
Restrants...and more!
Other
Dormitories
Nursery
Nurs
hom
homes
Hotels
t l
Offices
Public
ublic
bli
Facilities
A
ir
Eco-cute heats
water with
natural air.
Education
Ed
ducation
ti
Facilities
Fa t
Factories
Fact
Jan. 2008
System fl ow → P.3 ∼ 4
Customers’success
stories in achieving
CO2 and cost reductions using Eco-cute
see
Nursery home Mominoki・Suginami
Ajigaura Hot Spring NOZOMI
Nursery home Livein Sakura
2
Musashi Institute of Technology
P.8
Key features
This is why many customers choose ITOMIC
Industrial-use Eco-cute.
Low-running cost
Bring water to
300yen
High temperatures
90℃
Details → seeP.15
Plenty of hot water for various use.
Operation cost per day
(Using industrial electricity of Tokyo Electric
Power Company, ten hours per day, 90 ℃ , 3 tons,
which is equivalent to 60 ℃ , 4.5 tons)
Safe and Easy
operation
No combustion.
Out of boiler code
code*.
(*Note that the regulations regarding boilers
vary in countries of use.)
Storage tank unit
3,000ℓ（500ℓ×6）
Eco-friendly
Heat pump unit
1
1700
Reduction in
CO2 emissions
1/6
approx
Compared with a gas boiler, it can
drastically reduce CO 2 emissions if
changed from other t ypes of water
heaters.
Details → seeP.16
Global warming potential compared
with new refrigerant.
System flow
0
Ozone-Depleting Potential
Supply hot water
Storage tank unit
1. Absorb heat from the air and transfer it to
the heat exchanger (for air), then deliver
the heat to refrigerant.
Heat pump unit
2. Warmed up refrigerant is pressed by compressor and becomes hotter.
3. Heat of refrigerant is transferred to water
by a heat exchanger (for water) to boil water.
4. The refrigerant that loss heat is sent to
the heat exchanger (for air) again.
A
High
Hot
tempera- water
（90℃）
ture
②
① Absorb
heat from
the air
Heat
excahanger
（for air）
CO2
refrigerant
cycle
④
Low
temperature
B
③
Heat
excahanger
（for water）
Heat
up
water
C
Water
A:Compressor, B:Expansion valve, C:Circulation pump
3
※Construction b
Environmental performance depending on refrigerant type
The refrigerant used in Eco-cute is a natural resource of CO2
（R744）. So it is eco-friendly and no collection is needed on
disposal. You can make an appeal for a more eco-conscious
facility.
ODP ※1
Refrigerant
GWP ※2
CFC Refrigerant R12
1
HCF Refrigerant R22
0.055
1,700
0
1,700
0
1,300
0
1
HFC Refrigerant R410A
〃
R134A
Natural Refrigerant R744
（CO2）
Necessity of
collection
8,500
Yes
No
These values are based on our estimation.
※1：ODP=Ozone Depletion Potential.
※2：GWP=Global Warming Potential.
Unique operation mode
Eco-cute has two unique operation mode, which reduces unnecessary running.
Details → seeP.15
Accessory: Remote control
ITOMIC Industrial-use Eco-cute includes one remote control per unit.
Name
Display contents, application
①
Normal operation: Current water temperature (℃ ) is shown.
① LCD
Abnormal condition: The error number is shown.
② Operation lamp
③ Start/Stop/Reset switch
②
Normal operation: Orange lamp is lit.
Abnormal condition: Orange lamp is flashing.
Normal operation: It is used to turn the operation on/off.
④
③
Abnormal condition: After error cause is cleared, push the button
to reset the error display.
④ Remaining water
Remaining water volume in Eco-cute is shown by the lamps.
indicator lamps
Refer to page 14,“Remote control installation.”
Usage
Boil water
※
※
※
R
←Supply water
Bathroom
Kitchen
by customers
4
Rest room
To select the best Eco-cute
Standard model; Heat pump unit and 3,000 liter storage tank unit.
The standard model for the ITOMIC Industrial-use Eco-cute consist of
one heat pump unit, one 3,000 liter storage tank unit, and one remote
control. However, depending on the hot-water supply conditions of the
facility, customization and combinations with other water heater systems are available.
Here are the some tips for selecting the best products.
Storage tank unit
Heat pump
unit
To maximize the performance;
Do you need smaller volume of
hot water?
Do you need larger volume of
hot water?
Change to a smaller tank.
Add heat pump units and storage tank units.
Combine large capacity heater-equipped open-type
storage tank.
Do you want to reduce initial
cost?
In case the hot-water supply
load varies...
Reuse existing water heater equipment if available.
Combine cost-effective storage tanks or other water heaters available.
Use boilers that combust gas or fuel oil together.
Do you prefer a more eco-friendly
system?
Use solar electrical generators or solar hot-water systems
together.
These are just examples.
E ach has ad vant age s and
disadvantages. Feel free to
contact us for consultation.
Options → see P.11
Product demonstration tour
We organize tours for product demonstration. We'll
show you our head factory (Tokyo, Japan) and our
customer's actual sites where Eco-cute is in use.
You can see the firsthand effectiveness.
For details, feel free to contact us.
5
System composition examples
Standard system
Installation example → see P.14
This is a standard system composed of an Eco-cute
heat pump unit and a storage tank unit only. When a
large volume of hot water is required, multiple units of
Eco-cute are connected in parallel or installed in each
hot-water supply area.
Eco-cute
When multiple units of Eco-cute are installed, an optional control function for multiple units can be built if
desired.（→ See P.11 "Change in specifications"）
Circulated hot water system
To prevent undesirable temperature drop at the supply
outlet. Our electric in-line heater EIL can be added as a
booster to circulation process, or changing the system
to Heat-up circulation specification is another option.
Circulated hot water system with EIL
The heat-up circulation specifi cation does not need an EIL.
Circulated water (return) comes into the Eco-cute.
（→ See P.11）
In case the circulation load is low… Heat-up circulation specifications is recommended.
•
In case the circulation load is high… The electric inline heater (EIL) is recommended.
Eco-cute
循環系統
•
EIL
EIL
Boiler combination system
Hot-water supply load →
Because variation of demand occurs from season to
season and/or weekdays, Eco-cute alone may not be
able to supply necessary quantity. If that is the case,
we recommend this system to cover the deficiency,
where Eco-cute as primary supplier and boilers to
supplement.
In addition, adding an Eco-cute system into an existing water heater system can lower the operating cost
of the entire system.
Boiler
Eco-cute
＋
The boiler starts operation and cover the defi ciency.
When stored hot
water runs out...
Boiler
Eco-cute
Time →
6
ITOMIC Industrial-use Eco-cute
Meets your needs
Cost reduction
▶ Eco-cute is a high efficiency water heater using minimum of electric power.
▶ Electricity is energy with little fluctuation in price.
▶ The initial cost will decrease when reusing existing equipment or in combination with storage tanks and combustion type boilers.
▶ Because Eco-cute is out of boiler code*, maintenance
cost can be held down. (*Note that the regulations regarding boilers vary in
countries of use.)
▶ Unique energy-saving operation mode reduces unnecessary running.
Eco-friendly and safe facilities
▶ CO2 emission are much less than from combustion type, which
is effective in achieving the target of CO2 emission reduction.
▶ Only the Eco-cute CO2 refrigerant is eco-friendly because both
the global warming potential and ozone depletion potential are
minimal.
▶ Different from boilers that burn fuel, Eco-cute emits no exhaust
gas and keeps the air clean.
▶ Because no ignitable fuel is used, facilities are safe.
▶ CO 2 refrigerant in Eco-cute has no harm on the environment
even during the production and disposal process.
Elimination of time and effort for installation and maintenance
▶ Length of pipes can be longer, which reduces design restraints.
▶ Reuse of existing equipment in combination with boilers reduces the effort of design, installation, and maintenance.
▶ We have various types of electric water heaters from table-top
to heavy volume applications. Therefore, all water heaters in a
facility can be prepared at the same time.
7
Customer review
Kubota Corporation Keiyo Factory
The welfare building of our institute had used LPG as a
water heater fuel for the bathrooms and lavatories for
a long time. However, the Rationalization in Energy Use
Law imposed CO 2 emission reductions, which forced
us to switch to water heater equipment that could effectively and immediately reduce CO2 emissions. During
renovation, we installed ITOMIC Eco-cute, which was reportedly more effective in reducing CO2 emissions than
other water heater equipment. And now, two years after
installation, the remarkable advantage that we obtained
by having selected Eco-cute appears in annual CO2 reduction reports. It contributes
to“operations with concern
for preserving the natural environment”prompted as part
of the Kubota Group Environment Char ter. ( Mr. Sasaki,
Environmental safety group
leader)
The Asahi shimbun Company
From an environmental viewpoint, and in a position to cooperate with reductions in carbon dioxide emissions, we
decided to switch from the existing steam boiler to the
electric ITOMIC Eco-cute and thus executed the renovations. The Asahi shimbun Company believes this activity plays a role in preventing global warming. In addition,
safety is improved because Eco-cute is not a boiler. (Mr.
Someya of Asahi Tatemono Kanri Co., Ltd.)
NIPPON EXPRESS CO., LTD.
Our Shinagawa Trunk Room offers cutting-edge storage
rooms featuring base-isolation construction and perfect
air conditioning. Temperature and humidity are fully controlled to secure customers’valuable belongings. We
focus on environmental conservation efforts, including
employment of eco-packing materials and support the
encouragement campaign of the Team-6 % Committee,
”1 person, 1 day, 1 kg of CO2 emissions reduction." As
part of this activity, we installed eco-friendly and small
CO 2 emit ting I TOMIC Eco cute in the Shinagawa Trunk
Room. We expect that it
will largely contribute to reductions in CO 2 emissions,
whose importance is increasing. (Accounting section personnel)
8
Hosei University Junior and Senior High School
In order to bring out the full energy-saving effect, this
institute selected equipment based on an energy-saving
plan made by an energy service company. The construction was completed recently, and the energy-saving effect has not been concretely measured yet. However, we
are not concerned because the ITOMIC Eco-cute brings
out the energ y-saving ef fect
more than gas and oil boilers. (Mr.
Kaneko of Shinryo Corporation)
Trest-Inn Tamachi
The primary target on opening in 2003 was energy cost
reduction. ITOMIC Eco-cute conformed to the idea. The
system uses nighttime electricity at the lowest energy
price rate. The added value of
easy operation led to the decision to install the equipment.
As for the installation effect,
we appreciate running cost
lower than that for fuel gas,
which is in the initial plan. In
addition, we consider it an advantage that the safety of our
guests is ensured, especially
in the hotel business where
safety is essential. (Mr. Tanaka, Manager)
Ajigaura Hot Spring NOZOMI
The installation of two ITOMIC Eco-cute was triggered
by a proposal from Tokyo Electric Power Company, Ibaraki Branch, including equipment maintenance and the
reduction in running cost, about five years after opening the facility. The plan and the actual operation are
as follows: on weekdays Eco-cute heats water until the
evening and the boiler starts operation after the hot
water runs out. This system meets our demand and
contributes to the reduction in operating cost. Now we
have a plan to expand the facility. On this occasion, Ecocute will be additionally installed and both the hot water
made by eco-friendly Eco-cute
and the hot springs ultra-deep
water welling from underground
of 150 4 meters will satisf y
guests with the pleasant spa.
(Mr. Masaki Kurosawa, company
executive)
9
Nursery home Mominoki・Suginami
Our first priority is resident's safe, comfortable life and
that all facilities employ safe, reliable, and eco-friendly
All electrification. On opening in March 2006, we selected earth- and human-friendly ITOMIC Eco-cute as water
heater equipment.“Human-friendly”means safety. Ecocute that does not use fire brings no anxiety so that we
can offer our basic ideal of a safe and reliable life to our
residents.“Earth-friendly”includes the carbon dioxide
emission reduction eff ect. In addition, to boil water using relatively cheap night electricity (60 % discount off
the daytime) remarkably reduces running cost compared
with gas and oil systems. Installation of this product has
realized our aim,“earth- and humanf r ie n dl y r e sid e n c e su r r o u n d e d by
nature that let us sense the four seasons.”(Mr. Kurahashi, section manager of the Planning Department, Toden
Life Support Co., Ltd.)
Nursery home Livein Sakura
From the viewpoint that employment of the All electrifi cation system would bring relief to residents and would
increase added value to the entire facility, we decided
to install ITOMIC Eco-cute. Hot water from Eco-cute is
used in the kitchens and bathrooms. It is popular among
residents that plenty of chlorine-free hot water is available due to the water storage type. (Mr. Ito, institution
director)
Musashi Institute of Technology
The Yokohama Campus of Musashi Institute of Technology
(Faculty of Environmental and Information Studies) became
the first educational institution in Japan to acquire the international environmental standard ISO14001 certification
in 1998. The facility (commonly-called“Eco campus”) and
the attached junior and senior high schools, which were
renovated in 2007, are equipped with a variety of different
kinds of state-of-the-art eco-conscious technologies. The
key factors that made us decide to employ ITOMIC Ecocute, as one of above equipment, were not only environmental consideration but also the lowest long-term running cost
compared with gas and oil boilers, CO2 emission reduction,
and safety to achieve reliable schools for students. Now we
receive the full advantages of selecting the All electrification system and
Eco-cute with eco-friendly and energysaving technologies. (Mr. Shiba, manager of the General Affairs Department,
corporate office )
10
Specifications
and
Options
Performance specification
Specifications
Conditions ※3
Power source
Three - pahse 50Hz
Installation
Outdoor
Setup temperature
90 ℃ ※1
Heating ability
21.3kW
26.3kW
Hot water fl ow volume
70 ℓ／ min
Water volume
3.8ℓ／ min
7.8ℓ／ min
Refrigerant pressure
High-pressure side 15MPa
Low-pressure side 8MPa
Power consumption
7.1kW
6.9kW
Operation current
25.2A
Decompression valve
（Arranged by customer：170kPa → see P.13）
Biggest stating current
207A
190kPa
Noise level ※4
54db
Pressure relief valve
Compressor
A
Item
Type
Half closed reciprocating compressor
Motor type
Three-phase inducing motor
Rated output
8.4kW
Crank case heater
100W
Fan
Propeller fan 110W × 2units
Pump
Seal less AC200V-100W
Air heat exchanger
Forced convection cross fin
Forced circulation dual tubes
Protection devices
Compressor bursting board, High pressure
switch, Low pressure switch, Overcurrent
relay (Compressor, fan, pump)
R744
（CO2）
Functions
Learning function, Seasonal mode
Accessories ※2
Remote control
Color
Ivory white
24.7A
※3： Condition A：Outside temp DB=7 ℃ ,WB=6 ℃ ,Hot water inlet =9 ℃ /outlet=90 ℃
ConditionＢ：Outside temp DB=16 ℃ ,WB=12 ℃ ,Hot water inlet=17 ℃ /outlet=65 ℃
※4： 1m apart from the unit and 1.5m high.
Hot water heat exchanger
Refrigerant
B
Storage tank unit
（3,000ℓ）
Heat pump unit
※1：90 ℃ mode. ※2：→ See P.16
Options
Change in storage volume of storage tank unit
2,310
1,560
1,560
CHP-2500U（2,500ℓ）
1,560
CHP-2000U（2,000ℓ）
It is possible to change the dimensions shown below. Feel free to contact us for consultation.
2,310
920
1,560
CHP-1500U（1,500ℓ）
920
920
CHP-1000U（1,000ℓ）
920
CHP-500U（500ℓ）
Change in specifications
Salt resistant and High salt resistant specifications
Heat-up circulation specifications
These specifications include a coating applied to the exterior and
main components according to the Japan Refrigeration and Air
Conditioning Industry Association Standard (JRA9002), which prevents sea salt particles fl owing on salt breezes from adhering to
the equipment and causing corrosion. In high salt resistant specifi cations, the number of coating applications (thickness) is more
than that in the salt resistant specifications.
These specifications ensure that the hot water is circulated to
prevent heat discharge in the plumbing. Select this to build a circulated hot water system with initial cost reductions where the
hot-water supply load is not high. (However, if the hot-water supply
load is high, consider separately provided electric in-line heater EIL
instead of this system.)
Antifreeze specifications
Multiple units control specifications
These specifi cations include antifreeze band heaters installed in
the main parts of the heat pump unit and the storage tank unit to
prevent plumbing damage due to freezing in midwinter. (The heaters automatically turn on when the outside temperature drops below 5 ℃ .)
When more than one Eco-cute is installed in parallel and operated
at the same time, variations in the hot-water supply condition of
each unit (drift fl ow) will be generated. The multiple units control
specifi cations only need wiring between the Eco-cute units. The
remaining volume of hot water in each unit is monitored, and the
hot-water supply is automatically adjusted to resolve the variation.
For high pressure specifi cations (0.49 MPa), contact us for consultation.
Separately provided items (Contact us for their price.)
This figure is
for indoor type.
Heat pump unit
Vibration-proof stand
Snow protection hood
Distant-control system
11
Electric in-line heater EIL
Dimensions
Remote control
（70）
Air outlet
Air inlet
（20）
R2.5
（83.5）
（120）
A ：Hot water outlet Rc3/4
（20A）
（A' plug set with cover）
B ：Water inlet Rc3/4
（20A）
（B' plug set with cover）
C ：Anchor bolt set hole 4- φ15mm
D ：Air heat exchanger room drain Rc1（25A）
E ：Cable connection
F ：Outside signal connection
G ：Power supply intake
H ：Water drain during operation Rc3/4（20A）
I ：Operation check window（Front）
J ：Control panel position（Front）
K ：Low pressure gauge
L ：High pressure gauge
（14.3）
Heat pump unit
（貯湯量）
100％
75％
60％
40％
25％
運転中
運転
停止
リセット
10％
R2.5
（φ8.5）
Remote control chord
（6.5）
（9）
Installation clearance
（mm）
Air outlet
Air inlet
Storage tank unit（3.000ℓ）
①
②
③
④
⑤
⑥
⑦
Tank drainage
⑧ Hot water connection
Supply water Rc3/4
（20A, to Heat pump unit）
⑨ Relief valve check window
Supply water connection
Hot water inlet Rc3/4
（20A, from Heat pump unit）
Anchor bolt setting hole 6-φ22mm
Temperature sensor connection line inlet
Temperature sensor connection box
Capacity
（ℓ）
3.000
2,500
2,000
1,500
1,000
500
12
Dimensions（㎜）
W
D
H
2,310
1,560
2,175
2,310
1,560
2,175
1,560
1,560
2,175
2,310
920
2,165
1,560
920
2,165
920
920
2,165
Piping connection
③⑧
①
Rc1 1/4
Rc1
Rc1 1/4
Rc1
Work procedures (abstract)
For details about installation, refer to separate Technical Manual.
Installation location
Install the units where cold air from the heat pump unit outlet or operation noise do not annoy neighbors and
consider sound insulation measures. The following space is needed for maintenance inspections. If the space
is less than the following, maintenance may be impossible. Be sure to maintain more space than the following
when designing.
Front
500mm
ѳ3,000mm
500mm
Front
900mm
700mm
900mm
700mm
ѳ2,500mm
700mm
500mm
Top view
ѳ2,700mm
ѳ3,300mm
Front view
3m
The heat pump units are to be installed outdoors.
The distance between the heat pump unit and the storage
tank.
[In case they are installed at the same level]
Recommendation is 5 m in direct distance (max. 30 m)
[In case one is installed on top of the other]
In case the heat pump unit is on top and the storage
•
tank is on the bottom: real height is 3 m (total plumbing length is 5 m or less)
•
In case the storage tank is on top and the heat pump
unit is on the bottom: real height is 7 m (total plumbing length is 10 m or less)
Water quality
Use tap water for Eco-cute. If well water is to be used, be sure to contact us for consultation.
Items arranged by customers
When plumbing, pressure reducing valves,
vacuum breakers, mixing valves, and motor
valves are needed. Customer is responsible for
providing them according to the water heater
system. (Table on the right shows our recommendation.)
Water supply line
Hot water
supply line
Item
Model No.
Pressure
reducing valve
RD-31N
Vacuum breaker
VD-5N
Mixing valve
JRG3400,3410
Motor valve
BM-7S
Manufacturer
VENN Co., LTD.
About these items, please contact to the manufacturer.
13
Installation example
Heat pump unit
Storage tank unit
Thermistor cable（12 core）
Automatic air vent valve
Hot water outlet
Hot water inlet
Water inlet
Hot water outlet
Remote control cable
（Balanced type shield wire）
Water outlet
Distant-control cable
Drain outlet
（Open constantly）
R
Water inlet
Water supply
Drainage
Drain outlet
（Open constantly）
Floor drain
Pressure reducing valve
Precautions
Water supply plumbing
1. Feed water pressure is recommended as 0.2 to 0.3 MPa on the primary side.
2. Use stainless steel or copper pipes for plumbing.
3. Conduct heat insulation work to prevent condensation on the plumbing.
4. If water is expected to freeze, implement antifreeze measures.
Hot-water supply plumbing
1. Use heat resistant plumbing material such as stainless steel and copper.
2. Conduct heat insulation to prevent accidents and heat radiation.
3. When hot water is supplied downwards from the storage tank, install atmosphere open pipe or vacuum
breakers to prevent negative pressure generation.
4. When driving a pipe into the storage tank directly, do not to apply force to the neck portion.
Drain plumbing
1. Do not install valves at the drain outlet and the heat pump unit drain port (air heat exchange drain). Be sure
to conduct indirect drainage treatment instead.
2. The storage tank drains high temperature water. Use heat resistant plumbing material.
Remote control installation
1. Only one accessory remote control should be installed for one heat pump unit. In case the remote control
is installed far from the heat pump unit, extrinsic influence such as noise may cause malfunctions. Implement the necessary measures to avoid any influence from the conduit work or route confirmation. (In particular, do not approximate or parallel the master electric cable to the operation cables.) Do not exceed the
maximum cable length of 50 m.
2. Use shielded cables for the remote control line and be sure to ground one end of the shielded cables.
14
Reference data
Electricity contract and running cost (Japan domestic)
Electricity contract
Eco-cute utilize relatively cheap Industrial thermal storage adjustment contract, and hot water equivalent to 4.5 tons
at 60 ℃ * cost 300 yen per day. Moreover, Industrial All electrification contract enables further running cost reductions. (* 3 tons at 90 ℃ conversion)
Basic contract Industrial thermal storage adjustment contract
If the operation time of a thermal storage type water heater system shifts from daytime (8:00 to 22:00) to nighttime
(22:00 to 8:00), this contract results in a 60 % discount on the electricity bill. ITOMIC Industrial-use Eco-cute is usually operated under this contract.
Calculation: Discount of the thermal storage adjustment contract = Electricity consumption for discount x rate in daytime x discount rate (approx 60 % )
Additional contract Industrial All electrification contract
After holding the Industrial thermal storage adjustment contract, if your heat source in the kitchen and air-conditioners are All electrification, you can additionally hold the contract and receive a 7 % discount.
Calculation example
● Running cost per month without a discount
（6.9kW ×10h×30days）×@ ￥12＝￥24,840
￥24,840
● In case of Industrial thermal storage adjustment contract
Discounted amount ＝
（6.9kW ×10h×30days）×@ ￥12×60 % ＝￥14.904
Running cost per month＝24,840−14,904＝￥9,936
￥9,936
Running cost per day ＝9,936÷30days ＝￥331
● In case of Industrial thermal storage adjustment contract
+ All electrification contract
Discounted amount ＝9,936×7 % ＝￥695
Running cost per month＝9,936−￥695＝￥9,241
Running cost per day ＝9,241÷30days ＝￥308
￥9,241
0
5000
10000
15000
20000
25000
These values are based on our estimation.
Running cost comparison
High efficient Eco-cute results in small energy consumption and low running cost. In
addition, because the electricity bill is little affected by price hikes in materials, it can
be operated and the cost remain stable.
High efficiency results in small energy
consumption.
Electricity is stable in price rate.
Industrial thermal storage adjustment
contract makes large discount.
* Note: The annual running cost are diff erent from above electricity contract because
the calculation conditions are diff erent.
￥848,350
￥848,350
￥658,125
￥658,125
￥464,740
￥464,740
Equipment type
Item
￥
￥140,830
140,830
Itomic industrial use
Eco-cute
Gas boiler
Coal oil boiler
Electric water heater
Energy consumption ratio
1
6.0
4.7
3.3
Annual running cost
￥140,830
￥848,350
￥658,125
￥464,740
Annual balance
---
+ ￥707,586
+ ￥517,334
+ ￥323,909
Energy price rate
@￥5/kWh
@￥95/㎥
@￥65/ℓ
@￥5/kWh
Consumption amount (annual)
28,166kWh
8,930 ㎥（N）
10,125ℓ
92,948kWh
These values are based on our estimation. Calculation conditions: One-year daily usage with All electrifi cation and nighttime thermal storage. Hot-water supply load: Average
fed water temperature in Tokyo area = 17 ℃ , boiled to 90 ℃ , yearly average temperature in Tokyo area (DB) = 16 ℃ , COP = 3.3.
Boiler effi ciency: 90 % , Energy price rate: estimated, annual load: 365 days x (90 ℃ - 17 ℃ ) x 3000 L = 79,935,000 kcal.
15
CO2 emission comparison
Electricity does not burn fuel so CO2 emissions are small.
Energy consumption is small so CO2 emissions are small.
71.2
72.1
48.7
22.5
Equipment type
Item
Itomic industrial use
Eco-cute
Gas boiler
Coal oil boiler
Heavy oil boiler
Amount of CO2 emissions
22.5
48.7
71.2
72.1
Amount of heat released
88.8MJ/h
45MJ/N㎥
35.6MJ/ℓ
39.1MJ/ℓ
Equipment efficiency
100 ％
85 %
85 %
85 %
CO2 emission factor ※
0.3kg-CO2 /kWh
2.1kg-CO2 /N㎥
2.5kg-CO2 /ℓ
2.7kg-CO2 /ℓ
CO 2 emissions are compared with the water heater equipment using other energy, which operates the same heating performance as ITOMIC Industrial-use Eco-cute. CO2
emission factors are specifi ed values of the Ministry of the Environment in 2007. Other values are based on our estimation.
Calculation conditions: Supplied hot water 90 ℃ , outer temperature 16 ℃ , 10-hour operation. Heating capacity = 88.8 MJ/h x 10 h = 888 MJ. CO 2 emissions = 0.3 kg/kWh
x 7.5 kW x 10 h = 22.5 kg.
* CO2 emissions when one energy unit (m2, L, kWh) is consumed.
Operation mode
(Detail)
Seasonal mode
This is an energy-saving function; operation pattern per
weekday has been monitored for the past one month
(four weeks) and the required volume of hot water and
operation time are calculated, which prevents unnecessary operation and water temperature decreases due to
natural heat radiation. (This function must be set by our
service personnel.)
As contrasted to normal 90 ℃ operation mode, this
mode varies operation temperature according to the
outside temperature. Using this mode in summer, when
not as much high temperature water is required, reduces
unnecessary boiling and warming operations.
100
Hot water temperature（℃）
Culclated
Monitored
hot water volume（ℓ） hot water volume（ℓ）
Learning function
90
90
80
88
84
80
70
90℃ mode
76
72
60
68
64
60
50
Seasonal mode
40
30
20
10
0
-15
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-10
-5
0
5
10
15
20
Outside temperature（℃）
After calculation, the following modes are available.
(1) Electricity reduction operation
(2) Natural heat radiation reduction operation
(3) Combination of above-mentioned (1) and (2)
The operation mode is set as you like.
16
25
30
35
40
FAQ
Here are frequently asked questions from our customers.
Q1
Are any hygiene measures against Legionella required?
A1
Legionella is sterilized over 60 ℃ . Because this unit stores water at over 60 ℃ , the bacteria does not develop.
Q2
Is water boiled by Eco-cute suitable for drinking?
A2
Be sure to boil water again with kettles before drink.
Q3
How loud operation noise is?
A3
It is 54 dB (at point of 1 m distant, 1.5 m high).
Q4
How about equipment durability?
A4
Legal durable years in Japan are 15 years. However, note that it depends on actual operating conditions
and environment.
Q5
How long is the distance between the heat pump unit and the storage tank?
A5
When installed at the same level, the recommendation is 5 m in direct distance (max. 30 m).
In case one is installed on the top of the other, it depends on the installation method.
In case the heat pump unit is on top and the storage tank is on the bottom: real height is 3 m (total plumbing length is 5 m or less)
In case the storage tank is on top and the heat pump unit is on the bottom: real height is 7 m (total plumbing length is 10 m or less)
Q6
Is it possible to install the heat pump units indoors?
A6
Install them outdoors. Heat exchange failure may occur, which results in lower performance.
For questions other than the above, feel free to contact us.
17
Questionnaire Sheet
This sheet will be used to provide you with the best energy-saving water heater equipment. Please fill in the following
items and fax the information to us.
Contact name
Country
Address
TEL/FAX/E-mail
Construction
phase
Address of the
building
Scale of the
building
New building
Renovation
Total floor area Reconstruction
㎡ , [ On the ground
stories,
basement
stories ]
Application of hot water
Operating time
： ∼ ：
Number of people
Volume of hot-water usage
● Kitchen ● Bathtub
Hot-water supply
conditions
● Shower
● Wash basin
Electric water heater
In case of
renovation,
about current
water heater
equipment
Boiler
Other[
Manufacturer, Model
Current fuel
]
Used time
Gas
Oil（ heavy fuel oil / coal oil ）
Other
information
FAX to
Nihon ITOMIC Co., Ltd
Eco Products Department
FAX+81-3-3621-2130
18
years
Nihon ITOMIC Co., Ltd
Eco Products Department
Itomic building 5-11-3, Narihira Sumida-ku, Tokyo,
130-0002, Japan
TEL+81-3-3621-2141 / FAX+81-3-3621-2130
http://www.itomic.co.jp/english/
台灣地區總代理
乘陽科技有限公司
Tel : 02 29270407
Fax : 02 29209403
www.co2hp.com
Cell Phone : 0933034124
'08.03-1-1-0.5 I