Hitachi RHUE-3AVHN-HM, Инструкция по установке и справочное руководство

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Introduction
Where correctly installed and maintained the Yutaki heat pump will provide adequate heating and hot
water all year round. It is important that the correct system configuration (docking option) has been
chosen by the system designer to ensure that comfort is maintained for the customer under typical
outdoor temperatures and hot water usage conditions relevant to the geographical area and household
demands.
The performance of Micro-generation heat pump systems is impossible to predict with certainty due to
the variability of the climate and its subsequent effect on both heat supply and demand. HACE
endeavors to provide the best available information at all times but is given as guidance only and should
not be considered as a guarantee.
The system designs outlined in this manual include provision for heating only (Configuration H), heating
and hot water generation using the Heat Pump alone (Configuration 1.0 and 1.2), the Heat Pump with
electric backup (Configuration 2.0, 2.1 and 2.2) and the Heat Pump with boiler backup (configuration
3.2 and 4.1). There is also an option to include Domestic Hot water only from the boiler and heating
from heat pump with boiler support (configuration 3.1).
The defrost cycle uses heat from water in the heating system. The designs outlined assume that there
will be sufficient system water volume and flow available at all times for the Heat Pump to defrost. The
defrost cycle will normally take water from the buffer tank but where this is not sufficient or no buffer
tank is fitted, there must be sufficient water volume with no restrictions of the heating water flow by
closed zone valves, underfloor heating actuators or thermostatic radiator valves.
If in doubt, please contact HACE Technical Support for further advice.
The table shown below provides theoretical information about the available volume of system water for
defrosting and the reduction of temperature of the system water during the defrost operation.
Model
Water tempera-
ture drop RHUE-3AVHN1 RHUE-3A(V)HN1-HM RHUE-4AVHN1-HM RHUE-5A(V)HN1-HM RHUE-6A(V)HN1-HM
5°C 232 212 276 342 410
10°C 118 106 138 171 205
15°C 77 71 92 114 137
20°C 58 53 69 86 103
25°C
46 42 55 68 82
Note: The values shown above are based on theoretical installation conditions. Values can vary for different
hydraulic circuit configurations. Installers should recalculate these values for the real conditions of their installation.