ecoGEO C Installation and User Manual (Version 1.0)
page 99
Application
•
DHW, heating and free cooling in houses, small apartment blocks, offices or shops with underfloor
heating/cooling systems, fan coil units, or thermo-convectors.
Operation
In heating mode, the heat pump pumps hot water directly to the heating system adapting to your needs. The
outlet temperature is adjusted to the type of installation and is optimized with regards to indoor and outdoor
temperatures. The flow rate is adjusted to maintain a constant working temperature difference (5°C by
default).
In free cooling mode the compressor switches off, the drive pumps remain active and cooling and brine circuits
are derived to the free cooling exchanger. Thus, the equipment drives cool water –obtained by heat exchange
with the antifreeze mixture from the brine system.
When there is a demand for DHW, the heat pump stops the production of heating or free cooling and sends
hot water to the coil in the hot water tank. The temperature and flow rate are controlled to minimize heating
time (maximum accumulation temp 50-55°C). Once a week, the electric heater located in the hot water tank is
activated to raise the temperature to 70°C to prevent possible outbreaks of legionella in the tank.
Additional control elements
Besides the heat pump control equipment you must install the following components.
•
An indoor temperature/humidity terminal (see section 5.7).
•
An outdoor temperature probe (see section 5.7).
Configuration
1.
Enter the SERVICE MENU
([Prg]
+
[Esc])
-> INSTALLER CONF. (Enter service password PW1)>
OPERATING SCHEME -> 1 ZONE.
