Installation Of A Mono-Bloc System - Panasonic Aquarea WH-ADC0309J3E5 Planning And Installation Manual

!
IMPORTANT
Due to the available volume of about 6.25 m³, the installation room in this example is only suitable
for single-phase systems of the Aquarea High Performance series with R410A refrigerant.
For all other models with a larger quantity of R410A or using one of the two other refrigerants
(R32, R407C) the practical limit c will be exceeded (for R32 is c = 0.061 kg/m³, for R410A is c =
0.44 kg/m³ and for R407C is c = 0.31 kg/m³).

5.2.3 Installation of a mono-bloc system

The mono-bloc system only has one outdoor unit with one or two fans, depending on the power
output and model (→
The outdoor unit of the mono-bloc system is connected to the heating circuit within the building by
water pipes which are routed in direct contact with the outdoor air. As these water pipes can freeze
at outside temperatures below 0 °C, they must be insulated according to the locally valid European,
national and regional specifications and guidelines.
ATTENTION
Danger of water pipes freezing in outside temperatures below 0 °C
When the heating circuit is filled with water and the outside temperature falls below 0 °C, the
water pipes of the mono-bloc system are at risk of freezing up. This can damage the mono-bloc
unit.
The client should therefore ensure the absence of frost by taking one of the following measures:
► Operate the heating circuit using a food-safe antifreeze mixture (propylene glycol).
► Equip the mono-bloc unit with an optional base pan heater, to prevent the heating circuit
from freezing up.
► Drain the heating circuit by using a field-supplied draining device (manually or
automatically) before freezing starts.
Aquarea air-to-water heat pumps - Planning and installation manual - 02/2022
1 Model range, p. 8).
Planning
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