Dimplex A12M User Manual

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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 to defrost the
evaporator, which will happen
automatically when required in
cold/moist weather conditions.
Therefore, it is necessary to connect a
buffer tank in series with the heat
pump, as shown in the hydraulic
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 start-up and
commissioning are carried out in cold
weather.
3.7 Electrical connections -
Preparation
 Ensure the incoming power supply
and the distribution board are
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 regulations for current
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
(Nominal impedance 120Ω) Foil and
Braid, which can be purchased from
Dimplex as an accessory.

Dimplex A12M Specifications

General

Brand	Dimplex
Model	A12M
Category	Heat Pump
Language	English