System description
3
Unit Description
In order to get the best results from the climate system DC AWA-SS series you should read through the
section For the System manager in these Installation and Maintenance instructions.
DC AWA-SS series is a climate system for
heating
houses
and
apartment buildings as well as industrial
properties.
Air
is used as the heat exchange source.
DC AWA-SS series is a complete heating installation for heating and hot water.
It is fitted with new design on the market to be developed specifically for heat pumps. A new evaporator enables
a
new and improved circulation system for the refrigerant. The heat pump has an integrated 150 or 200 litre water
tank and an immersion heater. The Tap Water Stratification system improves the efficiency of heat transfer by keeping
the water in distinct thermal layers in the water tank.
The unit is fitted with a regulating computer , which is controlled over a graphic display unit.
Heat is distributed throughout the house over a hydronic heating system referred to as low temperature
system with a maximal water temperature to radiators (feed water
temperature) of 65°C.
Most of the heating
demand is taken care of by the heat pump (compressor unit), the auxiliary heater being started only when
demands exceed available heat pump capacity.
DC AWA-SS series consists of five main components:
a. Heat Pump Unit
Rotory or Scroll-compressor
Stainless steel heat exchangers
Circulation pumps for
heating systems
Valves and safety equipment for refrigerant system, complete with necessary electric components
b. Water Heater
150 or 200 litre
Lined with copper sheet against corrosion or made of stainless steel
Maintenance free as no anode is used
c. Reversing Valve
Opening or closing the connection to water heater according to operating mode: heating or warm water
production
d. Auxiliary Heater
3/6/9 kW electric heating element
Three-step capacity control
Fitted on feed water line
Delivers back-up heat in case of great heat demand that exceeds heat pump capacity
Starts automatically, provided operating mode “AUTO” has been selected
e. Regulating Equipment
The regulating system controls heat pump components (compressor, circulation pumps, auxiliary heater and
reversing valve). Based on data received from sensors, it starts or stops heat pump operation and determines
whether heating or warm water shall be produced. The system consists of:
Control computer with graphic display unit
Temperature sensors (outside air,room, feed line, return line system)
