AS 3852-1991

1 - AS 3852:1991 PERFORMANCE OF HOUSEHOLD ELECTRICAL APPLIANCES - THERMOSTATICALLY CONTROLLED DIRECT-ACTING HEATERS
4 - PREFACE
5 - CONTENTS
6 - SECTION 1 - SCOPE AND GENERAL
6 - 1.1 SCOPE
6 - 1.2 REFERENCED DOCUMENTS
6 - 1.3 DEFINITIONS
6 - 1.3.1 Electric room heater (hereinafter referred to as a ‘heater’)
6 - 1.3.2 Direct-acting electric room heater
6 - 1.3.3 Forced draught heater (fan heater)
6 - 1.3.4 Radiant heater
6 - 1.3.5 Natural convection heater
6 - 1.3.6 Hybrid forced draught radiant heater
6 - 1.3.7 Hybrid convection radiant heater
6 - 1.3.8 Fixed heater
6 - 1.3.9 Portable heater
7 - 1.3.10 Thermostatically controlled heater
7 - 1.3.11 Heater with more than one heat setting
7 - 1.3.12 Heater with built-in thermostat
7 - 1.3.13 Heater with regulated air-flow
7 - 1.3.14 Heater with remote thermostat
7 - 1.3.15 Rated input
7 - 1.3.16 Average ambient temperature
7 - 1.3.17 Energy control factor
7 - 1.3.18 Energy control grade
7 - 1.3.19 Base load
7 - 1.3.20 Heating element
7 - 1.3.21 Control thermostat
7 - 1.4 SAFETY REQUIREMENTS
8 - SECTION 2 - DESIGN, CONSTRUCTION AND PERFORMANCE
8 - 2.1 WORKMANSHIP
8 - 2.2 MATERIALS
8 - 2.2.1 Material specifications
8 - 2.2.2 Finish
8 - 2.3 FACILITIES FOR MAINTENANCE
8 - 2.4 SERVICE LIFE
8 - 2.5 THERMAL INSULATION
8 - 2.6 ELECTRICAL COMPONENTS
8 - 2.7 NOISE
8 - 2.8 ELECTROMAGNETIC INTERFERENCE
8 - 2.9 OPERATING FREQUENCY LIMITS FOR CONTROLS
9 - 2.10 MULTI-STAGE THERMOSTATS
9 - 2.11 LINTING
9 - 2.12 COLD DRAUGHTS
9 - 2.13 ENERGY CONTROL FACTOR
10 - SECTION 3 - MARKING, INFORMATION AND INSTRUCTIONS
10 - 3.1 MARKING
10 - 3.2 POINT-OF-SALE INFORMATION
10 - 3.3 GUARANTEE
10 - 3.4 INSTALLATION INSTRUCTIONS
10 - 3.5 OPERATIONAL INSTRUCTIONS
10 - 3.6 SOURCE FOR REPLACEMENT PARTS
10 - 3.7 MAINTENANCE INSTRUCTIONS
11 - APPENDIX A - TESTS
11 - A1 SCOPE
11 - A2 PRINCIPLE
11 - A3 APPARATUS
11 - A3.1 Energy measurement test facility
11 - A3.2 Power supply and metering
13 - A3.3 Temperature sensors
13 - A4 SET UP
13 - A4.1 Arrangement of heater for tests
13 - A4.2 Adjustments to climatic test room
13 - A4.3 Measurement of air temperatures in the climatic test room
14 - A4.4 Heat load of climatic test room
14 - A5 PROCEDURE
14 - A5.1 Constant heat output
14 - A5.2 Energy control factor
14 - A5.3 Calculation of energy control factor and assignment of energy control grade
15 - A6 REPORT

Specifies design, construction and performance requirements for thermostatically controlled direct-acting room heaters of the forced draught and natural convection type, also hybrid forced draught radiant heaters and hybrid natural convection radiant heaters. Point-of-sale information includes the maximum sound power level, and energy control grade.

This Standard specifies performance requirements for direct-acting electric room heaters, as defined in Clause 1.3.2, which are designed for thermostatically controlled operation at low or medium voltage. It also applies to hybrid forced draught radiant heaters and hybrid convection radiant heaters (see Clauses 1.3.6 and 1.3.7). The determination of energy control factors and grades is applicable only to the thermostatically controlled part of these heaters, however, determination of the effectiveness of the radiant component is under consideration.The Standard does not apply to the following:(a) Thermal storage electric room heaters within the scope of AS 1206. (b) Air-conditioning appliances within the scope of AS 1861.(c) Electrical heating systems which are designed to heat a room primarily by raising the temperature of a floor, wall or ceiling surface.(d) Electrically operated infrared and ultraviolet heating devices which are designed for therapeutic or industrial purposes.

First published AS 3852-1991.