Electrical System; General Instructions - GeoSmart NETZERO BW Manuel D'installation

5. Electrical system

B
▪
efore performing any operation on the electrical panel, disconnect the power supply.
DANGER!
R
▪
emember that the heat pump has multiple external power supply.
G
▪
EOSMART ENERGY recommend installing one external automatic breaker in each external power
supply (control, internal auxiliary equipment and drive).
A
▪
ll the installation and maintenance work must be performed by an authorized technician following
local regulations and according to the instructions described in the heat pump installation manual.
T
▪
he cables used to connect the heat pump must comply with the applicable national regulations.

5.1. General instructions

The locations of the main electrical panel components are shown below.
AIxx
Analogue inputs
DIxx
Digital inputs
DOxx Block I
Digital outputs to
DOxx Block II
Digital outputs to
AOxx
Analogue outputs
Controller pCO OEM+
Controller expansion
module
Heat pump control
power supply
Transformer fuse
Several installation devices are controlled from the heat pump electrical panel. Some are internal and other are installed externally.
The internal components are connected to the electrical panel in the factory. Depending on the installation that the heat pump is
going to be connected to, in addition to the power supply, it may be necessary to connect various temperature probes (analogue
inputs AIxx), control signals from thermostats or other external equipment (digital inputs DIxx) on/off switching of pumps and/or
valves (digital outputs DOxx) or regulation of pumps and/or valves (analogue outputs AOxx).
The figure below shows a sample installation with the options for connecting external components to the heat pump.
GEOSMART ENERGY
Figure 5.1. Location of the components in the electrical panel.
22
Installer manual NETZERO
Drive compressor
Inverter
Fbus2
ModBus
communication port
Electrical power filter
Drive/compressor
power supply
Internal auxiliary
heater power supply
Controller fuse
Transformer 24 Vac