I.S. EN 835:1995
Current
The latest, up-to-date edition.
HEAT COST ALLOCATORS FOR THE DETERMINATION OF THE CONSUMPTION OF ROOM HEATING RADIATORS - APPLIANCES WITHOUT AN ELECTRICAL ENERGY SUPPLY, BASED ON THE EVAPORATION PRINCIPLE
Hardcopy , PDF
English
01-01-1995
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
Foreword
1 Introduction
2 Scope and general terms
3 Functional principle
4 Definitions
4.1 Reference condition
4.2 Reference temperature of the measuring liquid
4.3 Design flow and return temperatures, mean design heating
medium temperature - design temperature of the measuring
liquid
4.4 Displayed reading
4.5 Rated displayed reading
4.6 Nominal evaporation
4.7 Evaporation rate
4.8 Counting rate
4.9 Meter characteristic
4.10 Counting ratio
4.11 Consumption scale
4.12 Unit scale
4.13 Idle evaporation
4.14 Measuring period
4.15 c-value
4.16 Rating factors
4.17 Manufacturer
5 Requirements for heat cost allocators
5.1 Casing
5.2 Ampoule
5.3 Measuring liquid
5.4 Over-fill for idle evaporation
5.5 Sealing
5.6 Scale-system
5.7 Consumption scale
5.8 Unit scale
6 Requirements for use and installation
6.1 Temperature limits
6.2 Installation on the radiator
6.3 Installation position
6.4 Conformity of instruments
6.5 Requirements for installation in single pipe systems
7 Requirements for rating
7.1 Resulting rating factor K
7.2 Rating factor K[o]
7.3 Rating factor K[c]
7.4 c-value
7.5 Rating factor K[t]
8 Requirements for maintenance and reading
9 Testing
9.1 General
9.2 Test documents
9.3 Test report
9.4 Test protocols
10 Test procedures
10.1 Construction
10.2 Sealing
10.3 Thermal durability
10.4 Ampoule
10.5 Measuring liquid purity and risk to health
10.6 Measuring liquid meter characteristics and hygroscopicity
10.7 Upper temperature limit
10.8 Measuring liquid over-fill for idle evaporation
10.9 Scale system
10.10 c-value, test procedure
10.11 c-value, test range
10.12 Rating factor K[o]
10.13 Rating factor K[c]
11 Marking
Annex A (informative) Information and recommendations
A.1 Heating systems
A.2 Recommended field of application
A.3 Heat emission not controllable by the consumer
A.4 Additional corrections
Annex B (informative) Bibliography
Important note : Users cannot be edited or removed once added to your Multi user PDF.Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.