Buffer Tank; Electrical Connections - Preparation - Dimplex A12M Installation Manual

Figure 4: Plumbing with isolation valve with strainer to be fitted to return pipe

3.6.1 Buffer tank

The heat pump uses reverse cycle
defrost in order
evaporator, which
automatically
cold/moist weather
Therefore, it is necessary to connect a
buffer tank in series with the heat
pump, as shown
schematic diagrams (Appendix B). The
Dimplex A-Class cylinder range come
with an integrated buffer tank, which:
Provides sufficient energy for the

unit to carry out successful defrost.
Increases compressor life due to the

extension of minimum starts
It is recommended that a buffer with a
heating element is used as it may be
required if initial
commissioning are carried out in cold
weather.
to defrost
will happen
when required
conditions.
in the hydraulic
start-up
3.7 Electrical connections -
Preparation
the
Ensure the incoming power supply

and
in
suitably rated.
Ensure that the regulations specified

by the local electricity supplier have
been adhered to.
The supply cable must be sized to

meet the requirements of national
wiring
carrying capacity and disconnection,
a minimum cross sectional area of
6mm² steel wire armoured (SWA)
cable is recommended.
The required controller cable is a

shielded MODBUS cable RS485, for
example a 4 core 1mm² 24 AWG
and
(Nominal impedance 120Ω) Foil and
Braid, which can be purchased from
Dimplex as an accessory.
9
the distribution
regulations
board are
for current