Dno And Tariffs; Hydraulics; Hydraulic Integration - Panasonic WH-SDF03E3E5 Series Design Handbook

Project Design
Electrical connection | Hydraulics
DNO and tariffs | Hydraulic integration

5.12.3 DNO and tariffs

Attention
Note

5.13 Hydraulics

5.13.1 Hydraulic
integration
Attention
Note
94
For the connection of the heat pump to the power mains, consideration
of the District Network Operator (DNO) connection conditions is required.
With this connection, data about the heat pump and operating parame-
ters must also be specified. If there is the option of using a cheaper split
tariff, this should be carefully considered to take into account the hot
water and heating run times and the building heat loss. This should be
considered at the planning stage to ensure the appropriateness of using
a split tariff .
If an outage from the power supply company coincides with a frost
period, then frost damage can occur if the frost protection measure
selected requires electricity. An auxiliary heating unit or other frost pro-
tection devices are therefore need to be connected to the power mains
such that they are not affected.
For more details on how these arrangments affect UK subsidy
requirements, please see: www.microgenerationcertification.org
All Aquarea heat pump systems have an internal water circulation pump
that circulates the heating water through the heat exchanger system. A
standard pump or high-efficiency pump is used depending on the series
and model variant of the Aquarea heat pump. Due to the independent
control of the high-efficiency pumps, standard and high-efficiency pumps
must be handled differently with regard to the hydraulic decoupling of the
heat pump circuit and heat consumer circuit (see following sections).
Depending on the series and model version, Aquarea heat pumps are
delivered with standard or high efficiency pumps.
High efficiency pumps have internal speed control, which can cause
the volume flow to drop below the minimum volume flow depending on
the setting. If this is not taken into consideration, it can lead to error
messages.
Note the explanations on hydraulic decoupling for standard and high
efficiency pumps.
Units with high-efficiency pumps are specially labelled in the unit over-
view at the start of the document and in the technical data. Generation F
units have high-efficiency pumps without differential pressure control
and can be integrated into the hydraulic system in the same manner as
standard pumps.
Aquarea air / water heat pump – design handbook 07 / 2014