Eco Mark Product Category No.154“Solar Heating System Version 1.3”
Certification Criteria―Applicable Scope―

Solar Heating System

Established: October 1, 2013

Japan Environment Association

Revised: September 1, 2023

Eco Mark Office

Expiration: September 30, 2030

NOTE: This document is a translation of the criteria written in Japanese. In the eventof dispute, the original document should be taken as authoritative.

Criteria 154V1

Eco Mark Product Category No.154“Solar Heating System Version 1.3” Certification Criteria

Japan Environment Association
Eco Mark Office
1. Purpose of establishing criteria
Omitted2. Applicable Scope
Solar Heating System3. Terminology
Omitted4. Certification Criteria and Certification Procedures
The product shall comply with all of criteria items (1)-(14). With respect toconformance to criteria items, the corresponding boxes in the Attached Certificatesshall be checked/filled in and submitted along with the appendix.
4-1. Environmental Common Criteria and Certification Procedures(1) The system shall have either a solar water heater (heat collecting unit) shown in
Table 1 or a heat collector shown in Table 2, and shall satisfy the heat collecting
performance of the relevant device.
Table 1

Standard amount of heat collected by a solar water heater (heat collectingunit)

Main component

Heat collection [kJ/m2-day]Solar water heater

8,374 or more

(Heat collecting unit)
Note) The test method shall follow JIS A 4111: 2011 9.1 Heat collecting performance
test.
Table 2 Standard for Daily heat collection efficiency of solar cell module
Category
Heat collecting
medium/function
LiquidDaily heat collection

Heat collecting shape/transmitter

efficiency

Plat plate type with transparent

40% or more

1/11

Criteria 154V1

body

Air

Vacuum glass tube type

40% or moreFlat

With transparent body

30% or moreplateWithout transparent body

10% or more

type
With solar power

10% or more－generation functionNote) The test method shall follow JIS A 4112:2020 10.1 Heat collecting performance
test.
[Certification Procedures]
The applicant shall fill in the required items on the attached certificate andsubmit the test results.
(2) The system shall have any of the main component devices shown in Table 3 andshall satisfy the heat-insulation performance of the relevant device.
In this regard, however, in the solar air heat collection system, if heat storage andspace-heating are directly carried out to a building (concrete, etc.) without having aheat storage tank, simulations shall have been conducted to independently predict
the indoor warmer environment when the heat quantity stored in the building or thesystem is used so that satisfactory heat insulation performance is secured.
Table 3Heat-insulation performance

Main component device

Heat loss coefficient [W/K]

Test method

Solar water heater

5.81 or less

JIS A 4111:2011(Hot water storage unit)

9.2 Heat-insulation
performance test

Heat storage tank

3.5V + 5.81 or less

JIS A 4113:2011

V: Storage tank volume [m 3]9.2 Heat-insulation
performance test

[Certification Procedures]
The applicant shall fill in the required items on the attached certificate andsubmit the test results.
(3) For more effective use of solar heat, the system shall conform to all relevant items

of following mandatory items a. through c. and one or more items of selection items d.
through i. by standard specifications or optional specifications.

2/11

Criteria 154V1[Mandatory items]a. In the case of a system for hot-water supply with no built-in auxiliary heat source,
the connection method to existing auxiliary heat source (hot-water supplyequipment) shall be defined (hot-water supply equipment compatible with solarsystem, separately required devices, piping, etc.).
b. In the case of a system for hot-water supply with a built-in auxiliary heat source,
the system shall have a function for supplying hot water with priority given tosolar thermal conversion rather than the auxiliary heat source. Specifically, a gas
water heater and oil-fired water heater shall have a function to heat water onlyby the heat quantity heated by solar heat without operating any auxiliary heatsources. A heat-pump electric water pump shall have a function to automaticallyor manually reduce the boiling up quantity by heat pump in accordance with theweather of the next day.
c. In the case of a system for hot-water supply with a built-in auxiliary heat source,
the auxiliary heat source shall be a latent heat recovery type water heater or aheat pump type electric water heater, or shall provide the coefficient ofperformance equivalent to the judgment criteria of “water heaters, etc.” in “Basicpolicy for the procurement of eco-friendly goods, etc.” according to Article 6 of“Law Concerning the Promotion of Procurement of Eco-friendly Goods andServices by the State and Other Entities (Law on Promoting Green Purchasing).”[Selection items]
d. The heat collecting performance of heat collector shall be higher than the heatcollecting performance prescribed in 4-1. (1) Table 2. Specifically, the systemshall have a heat collector shown in Table 4 and shall satisfy the daily heatcollection efficiency of the relevant device.

Table 4 Standard for Daily heat collection efficiency of solar cell module
Category
Heat collecting
medium/function
LiquidAir

Daily heat collection

Heat collecting shape/transmitter

efficiency

Plat plate type with transparent

60% or more

bodyVacuum glass tube type

50% or more

Flat plateWith transparent

40% or more

typebody3/11

Criteria 154V1Note) The test method shall follow JIS A 4112:2020 10.1 Heat collecting performancetest.
e. The real-time heat collection condition of the system and the environmental
effects by solar thermal conversion such as accumulated CO 2 emission reduction,etc. should be visualized by monitors, etc. for users.
f. No electricity is used for heat collection of the water heating system and forcirculation of a forced circulation system heat collection medium, or heatcollecting operation can be conducted by natural energy (photovoltaic cells, etc.).
g. Standby power consumption of main component devices proper shall be 2W orless.
h. The system shall have a function to recover heat of remaining hot water in a bathtub and utilize it for heating in a heat storage tank.
i. The system shall be a solar air heat collection type heating system and shall havethe equipment that can utilize solar heat (water heating, etc.) even in seasonswhere heating is not required, such as summertime, etc.
[Certification Procedures]
The applicant shall fill in the required items on the attached certificate andsubmit the documents to explain the compliance with each item.
(4) The system shall have sufficient durability secured so that it can stand the use
over a long period of time. In addition, a system for securing the installation quality
shall have been established, such that solar installers certified by Solar System
Development Association install the system or oversee the installation work.
[Certification Procedures]
The applicant must fill in the required information on the attached certificate andsubmit the data describing the compliance condition to durability and installation
quality in the high-quality solar system certification system and an installation
work system diagram.
(5) The system shall have a maintenance control system (consultation service andrepair contract) formulated and shall have the written quality warranty attached.
In addition, the quality warranty shall be free repair warranty (excludingdisclaimers) of at least 5 years for the casing of hot-water storage unit or heat storagetank as well as heat collector, and at least 2 years for other portions or functions.
Incidentally, the period of supplying repair and replacement components ofcomponent devices for residential use shall be at least 10 years after discontinuationof production of the devices.

4/11

Criteria 154V1[Certification Procedures]
The applicant shall fill in the required information on the attached certificate andsubmit copies, etc. of the applicable portions on which information is provided withrespect to quality assurance, repair contract receiving system, and component
supply period.
(6) Product shall be designed with recyclability of unrequired systems after use taken
into account (selection of material, labeling of resin material, good separability
between dissimilar materials (metal and plastics, etc.), and others).
[Certification Procedures]
The applicant shall fill in the required items on the attached certificate andsubmit the explanatory documents .
(7) Of thermal insulation material used for main component devices, recycledmaterials such as glass cullet, slag, etc. are used for glass wool, rock wool, and otherfiber-based heat-retention materials.
[Certification Procedures]
The applicant shall fill in the required information on the attached certificate andsubmit a material supply certificate issued by the insulation material supplier orcontents of transaction, contract documents, and others which the use of recycledmaterials for heat insulation materials is prescribed.
(8) For main component devices, specific chlorofluorocarbons (5 kinds of CFC), otherCFCs, carbon tetrachloride, trichloroethane, and alternatives for chlorofluorocarbon(HCFC and HFC) prescribed in Table 5 shall not be used. HFC used for coolant forcooling apparatus and air-conditioners should be excluded or coolants with as low
global warming potential as possible shall be used.
Table5 Fluorocarbons prohibited to use during manufacturing the main units
CFC5s Trichlorofluoromethane
HCFC Chlorofluoroethane

OtherCFCs

Dichlorodifluoromethane

Hexachlorofluoropropane

Trichlorotrifluoroethane

Pentachlorodifluoropropane

Dichlorotetrafluoroethane

Tetrachlorotrifluoropropane

Chloropentafluoroethane

Trichlorotetrafluoropropane

Chlorotrifluoromethane

Dichloropentafluoropropane

Pentachlorofluoromethane

Chlorohexafluoropropane

Tetrachlorodifluoroethane

Pentachlorofluoropropane

Heptachlorofluoropropane

Tetrachlorodifluoropropane

5/11

Criteria 154V1

Hexachlorodifluoropropane

Trichlorotrifluoropropane

Pentachlorotrifluoropropane

Dichlorotetrafluoropropane

Tetrachlorotetrafluoropropane

Chloropentafluoropropane

Trichloropentafluoropropane

Tetrachlorofluoropropane

Dichlorohexafluoropropane

Dichlorofluoropropane

Chloroheptafluoropropane

Chlorodifluoropropane

Carbon tetrachloride

Chlorofluoropropane

1,1,1-Trichloroethane

HCFCHFC

Trifluoromethane

Dichlorofluoromethane

Difluoromethane

Chlorodifluoromethane

Fluoromethane

Chlorofluoromethane

1,1,1,2,2-Pentafluoroethane

Tetrachlorofluoroethane

1,1,2,2-Tetrafluoroethane

Trichlorodifluoroethane1,1,1,2-Tetrafluoroethane

Dichlorotrifluoroethane

1,1,2-Trifluoroethane

Chlorotetrafluoroethane

1,1,1-Trifluoroethane

Trichlorofluoroethane

1,1-Difluoroethane

Dichlorodifluoroethane

1,1,1,2,3,3,3-Heptafluoropropane

Chlorotrifluoroethane

1,1,1,3,3,3-Hexafluoropropane

Dichlorofluoroethane

1,1,2,2,3-Pentafluoropropane

Chlorodifluoroethane

1,1,1,2,3,4,4,5,5,5-Decafluoropentane[Certification Procedures]
The applicant shall fill in the required items on the attached certificate.

(9) The solar air heat collection system shall satisfy “Standard of emission rate ofvolatile organic compounds from building products (Study group on voluntarylabeling of VOCs emitted from building materials)” regarding emission of Toluene,Xylene, Ethylbenzene or Styrene from the main unit to the indoor air. (Table 6) In
addition, with respect to the formaldehyde emission, the solar air heat collection
system shall be rated “F four-stars” or be outside the scope of regulations set forth by
the Minister of Land, Infrastructure and Transport, respectively.
Table 6 Standard value of VOC emission rateToluene

Standard value of emission rate(μg/m2h)≤38

Xylene,≤29

Ethylbenzene≤550

Styrene≤32

Target VOC

6/11

Criteria 154V1[Certification Procedures]
Test results followed by JISA 1901 “Measuring methods for emission of volatile organic
chemicals (VOC), formaldehyde and other carbonyl compounds—small chamber
method” conducted by a third party testing body or an own company, or certificate
issued by a manufacture showing no relevant substance added, etc. shall besubmitted. Regarding formaldehyde, a certificate showing that the product has been

rated Class “F four-stars” or approved by the Minister of Land, Infrastructure andTransport, etc. shall be submitted.
(10) With respect to systems for water heating, migration performance of hot effluent
water of main component devices shall satisfy the standard of “Ministerial Ordinanceconcerning the standard of structure and material of feed water supply system (MHW
Ministerial Ordinance No. 14 dated March 19, 1997).”[Certification Procedures]
The applicant should fill in required information on the attached certificate andsubmit test results, etc. by JIS S 3200-7 (Equipment for water supply service -Test methods of effect to water quality).
(11) The content rate of lead, mercury, cadmium and these compounds, hexavalentchromiumcompounds,

Polybrominatedbiphenyl(PBB)

orPolybrominateddiphenylether (PBDE) in the main unit shall comply with Table 7. However, this item
does not apply to those substances specified in the amended RoHS Directive(2011/65/EU) ANNEX III and those used due to an unavoidable reason for productsafety (such as lead in the thermal fuse).
In addition, the product shall contain no flame retardant of short-chain chlorinatedparaffin (the number of chained C is 10 to 13 and contained chloride concentration is50% or over) as prescriptive constituents.
Table 7 Content rate in the main unit
material

Content rate[wt%]Lead and its compounds

 0.1

Mercury and its compounds 0.1

Cadmium and its compounds

 0.01Hexavalent chromium compounds

 0.1

Polybrominated biphenyl (PBB)

 0.1

Polybrominated diphenylether (PBDE) 0.1* The content rate refers to the content proportion in a homogeneous substance(minimum unit that can be separated by rule with totally uniform composition).

7/11

Criteria 154V1[Certification Procedures]
The applicant should fill in required information on the attached certificate, andsubmit data explaining the investigation method (investigation sheet, test results,etc.) on the content percentage or non-inclusion of the relevant substance, as well
as data describing the management system.
(12) With respect to the main component devices of the system, the information on
the items shown in Table 8 is disclosed and easily accessible.
Table 8Information disclosure items of solar heating system

Category

Item

Points to be checked

Heat

Presentation of thermal

Yearly estimated thermal energy collection

collector

energy collectionCalculation

estimation method

radiation data, loss of heat collector and heatconditions(amountofsolar

storage tank, etc. used for calculation)
Conditions and factors

Impact of shade, solar radiation conditions,of inability to obtain theimpact of temperature, weather conditions,standard heat collecting

geographical conditions, etc.

performance
Main

Disposal

Disposal method and precautions at the timecomponentof disposal (information, etc. required for thedevices inappropriate procedure on the final disposal ofgeneral

the used product, and in the event that HFC isused as air-conditioning coolant, precautions
concerning

HFC

leakagepreventionandrecovery)
Maintenance andMaintenanceandinspection

conditions

inspection(inspection frequency, etc.)

Warranty system

Warranty conditions (scope and content ofrepair and replacement), warranty period[Certification Procedures]
The applicant should fill in required information on the attached certificate andsubmit the relevant information disclosure portion (text is acceptable).
(13) In manufacturing the applied product, related environmental laws andregulations and pollution control agreement (hereinafter referred to as the8/11

Criteria 154V1“Environmental Laws, etc.”) must be followed with respect to air pollution, watercontamination, noise, offensive odor, and emission of hazardous materials in the area
where the plant performing the final manufacturing process is located.
In addition, the state of compliance with the Environmental Laws, etc. for the last
five years from the date of application (whether there is any violation) must bereported. If there is any violation, it is necessary that proper remedies and preventive
measures have been already taken, and the related Environmental Laws, etc. must
thereafter be followed appropriately.
[Certification Procedure]With respect to the compliance with the Environmental Laws, etc. in the area
where the plant performing the final manufacturing process is located, acertificate issued by the representative of the business of manufacturing theapplied product or the manager of the relevant plant (entry or attachment of thelist of names of the Environmental Laws, etc.) must be submitted.
In addition, it is necessary to report whether there is any violation during the last
five years, including a violation subject to administrative punishment oradministrative guidance, and if there is, the following documents in a and b mustbe submitted:
a. With respect to the fact of violation, guidance documents from administrative
agencies (including order of correction and warning) and copies of written
answers (including those reporting causes and results of correction) to such
documents (making a series of progress clear);b. Following materials (copies of recording documents, and so on) concerning themanagement system for compliance with the Environmental Laws, etc. in1)-5):
1) List of the Environmental Laws, etc. related to the area where the plant islocated;
2) Implementation system (organizational chart with entry of roles, etc.);
3) Document stipulating retention of recording documents;
4) Recurrence prevention measures (future preventive measures);5) State of implementation based on recurrence prevention measures (result ofchecking of the state of compliance, including the result of onsite inspection).

4-2. Criteria for Material and Certification Procedures(14) The system shall conform to the requirements of “High-quality Solar System
Certification System” implemented by Solar System Development Association.

9/11

Criteria 154V1[Certification Procedures]
The applicant should fill in required information on the attached certificate andsubmit a copy of the certificate of “High-quality Solar System Certificate System”
issued by Solar System Development Association.

5. Considerations
In the process of manufacturing products, it is desirable to consider the following items,
although they are not requirements for certification. Compliance with each item shallbe indicated in the Attached Certificate(1) There is a system for recovering the used system equipment and recycling therecovered equipment.

6. Product Classification, Indication and Others(1) Omitted.
(2) In principle, Eco Mark shall be indicated on the product, catalog, etc. Regarding
licensee of Eco Mark Utilization Contract who already own Eco Mark products, theindication of the logo and certification number that have been used is alsoacceptable.

(Note for the indication)*For indicating the logo, Eco Mark certification number (eight-digit number) or thename of the licensee using the logo shall be appeared.
* Such expression as “Eco Mark product” can be used following the 2.(2) of the Guide
to Eco Mark Usage.
“Eco Mark product”, “#Eco Mark”, “www.ecomark.jp”, “Eco Mark Certificate”* In accordance with “Environmental Labeling Guidelines” of the Ministry of theEnvironment of Japan, etc., the environmental claims of certified products may be
indicated in association with Eco Mark.
(https://www.env.go.jp/policy/hozen/green/ecolabel/guideline/)* The Guide to Eco Mark Usage shall be followed for any cases not listed above.
(https://www.ecomark.jp/office/guideline/guide/)

10/11

Criteria 154V1

October 1, 2013

Established (Version 1.0)

March 1, 2018

Revised (Version1.1)

January 7, 2019

Extension of Expiration dateApril 1, 2019

Revised (6. (2) Eco Mari indication)

March 1, 2021

Revised (4. (1)(3), Version1.2)

September 1, 2023

Revised (4. (9), Version1.3)

March 15, 2024

Extension of Expiration date

September 30, 2030

Expiration

The Certification Criteria for the Product Category will be revised when necessary.

11/11