本文件规定了测定空间供暖用空气源热泵热水器季节性能特性的试验条件，该热水器带有或不带有辅助加热器的电动压缩机。本文件的目的是在不运行任何辅助加热器的情况下，对空间供暖用热泵热水器的性能进行评估。对于由多个带有制冷剂或水连接件的部件组成的空间供暖用热泵热水器，本文件仅适用于作为成套设备设计和供应的热水器。 季节性性能系数除其他外，取决于气候条件和空间供暖分配网络的温度状况。 本文件定义: -三种设计条件，每种设计条件的特点是设计温度，代表该设计条件下可能出现的最低温度； -三种水温分布模式，即文中的“温度应用”。 本文件的用户可自由确定一个或多个规定设计条件和一个或多个规定温度应用的季节性性能系数。 本文件还提供了可与相关设计条件一起使用的三个供暖季节的完整说明。

The document specifies test conditions for determining the seasonal performance characteristics of air source heat pump water heaters for space heating with electrically driven compressors with or without supplementary heater. The purpose of this document is to rate performance of the heat pump water heaters for space heating with no operation of any supplementary heater. In the case of heat pump water heaters for space heating consisting of several parts with refrigerant or water connections, this document applies only to those designed and supplied as a complete package. The seasonal coefficient of performance depends, inter alia, on the climate conditions and temperature regime of the space heating distribution network. This document defines: — three design conditions, each of them being characterized by a design temperature which represents the lowest temperature that can occur in that design condition; — three water temperature distribution regimes, namely "temperature application" in the text. The user of this document is free to determine the seasonal coefficient of performance for one or more of the defined design conditions and for one or more of the defined temperature applications. This document also provides a full description of three heating seasons that can be used with the associated design conditions.