BS 3999-2:1991

Superseded

View Superseded by

Methods of measuring the performance of household electrical appliances Thermal storage electric water-heaters

Available format(s)

Hardcopy , PDF

Superseded date

19-03-2004

Language(s)

English

Published date

30-09-1991

Publisher

British Standards Institution

Committees responsible
Foreword
Methods
Section one. General
1 Scope
2 Object
Section two. Definitions and letter symbols
3 Terms used to designate appliances
3.1 Storage water-heater
4 Terms used to classify appliances
4.1 Unvented water-heater
4.2 Cistern-fed water-heater
4.3 Open outlet water-heater
4.4 Vented water-heater
4.5 Cistern-type water-heater
5 Terms relating to characteristics of appliances
5.1 Rated capacity
5.2 Rated input
5.3 Standing loss per 24 h
5.4 Rated voltage
6 Symbols
Section three. General notes on measurements
7 List of measurements
8 General conditions for measurements
9 Mounting of the water-heater
10 Measurement of stored water temperatures
11 Thermostat setting
12 Measurement of energy consumption
Section four. Methods of measurements
13 Verification of the rated capacity
14 Standing loss per 24 h
15 Hot water output
16 Reheating time
17 Mixing factor
18 Deviation from dial calibration
19 Cyclic temperature variation (differential)
20 Declaration by the manufacturer
Figures
1 Schematic representation of storage water-heaters
2 Measurement of water temperatures
3 Measurement of water temperature using a
thermocouple
4 Measurement for thermal storage water-heaters

Defines principal performance characteristics and describes standard methods of measuring. Includes verification of the results of the measurements and information for the user.

Committee	CPL/59
DevelopmentNote	Supersedes BS 3999-2(1985) and 89/22121 DC Earlier superseded by BS EN 60531, now reinstated as current. (11/2003)
DocumentType	Standard
Pages	16
PublisherName	British Standards Institution
Status	Superseded
SupersededBy	BS EN 60379:2004
Supersedes	BS 3999-2:1985