Low-temperature air-water heat pumps
Download a product data sheet – for industrial facilities
Download a product data sheet – up to -15C
Low temperature air-water heat pumps generate heat even at -15C and are capable of heating water to +55C!!
They are usually installed in places where temperature and extreme efficiency requirements are lower, i.e. in bivalent systems and with other heating equipment. For example, a heat pump operates to -15C and below this temperature it switches off and sends a signal that triggers other equipment to take over the heating function.
Pumps of this type can be used also in systems with the availability of heat recovery from air exhausted from ventilation systems. Air from ventilation is a lower source for pump operation.
ECO models are available in the following range of powers:
EXT8PS-ECO/ 8KW
EXT10PS-ECO/ 10KW
EXT13PS-ECO/ 13KW
EXT15PS-ECO/ 15KW
EXT20PP/ 20KW
EXT25PP/ 25KW
EXT32PP/ 32KW
EXT66PP/ 66KW
Every unit is fitted with SCROLL type compressors (Hitachi or Copeland), plate heat exchangers (SWEP AISIN 316) made of stainless steel, expansion valves (Alco Thermal, Emerson), Emerson filters, and automatic control systems and controllers (Siemens, Carel).
The housing has been soundproofed with sound absorbing material; therefore, Exotherm heat pumps are characterised by quiet operation.
SCROLL compressors are mounted on special shock absorbers that minimise vibrations and provide complete user comfort.
The applied controllers give an option to combine the automatic controls of the device with the Internet; owing to this solution, an owner and the headquarters of the firm may check the correct operation of the system and forecast and detect any irregularities in operation even at long distances, which is very convenient, particularly during a warranty period.
Siemens and Carel controllers applied in Exotherm pumps offer a range of central heating temperature controls with:
- fixed heating water temperature
- a so-called heating curve, i.e. smooth change of heating water temperature depending on the ambient temperature of air and
- a weather station and a heating curve
Each and every Exotherm heat pump comes with the so-called hot service water priority.
In order to provide the safety of the electrical and gas system operation, the following solutions are applied:
- 380V phase error sensors
- 380V phase decay sensors
- liquid flow sensors (optional)
- 24V controller supply
- complete diagnostics and the memory of alarms and errors
- a separate automatic control fuse
- gas pressure barostats
- additional emergency heating of the exchanger
- water antifreeze function
- the option to control other heating devices
- the option to install the cooling function, i.e. ‘heating and cooling in one’
- soft starts (optional)
- the option to control and diagnose the system over the Internet
Podstawowe dane urządzeń
- ecological, non-flammable and biodegradable cooling gas R410A
- scroll Hitachi EVI Japan or Copeland EVI compressors
- SWEP 316 plate exchangers made of stainless steel
- Emerson filters
- Schneider contactors
- 380V Telemanique error and phase decay sensors
- Low and high pressure barostats
- EVI gas system based on two SWEP heat exchangers
- 2 electronically controlled expansion valves
- an internal LCD controller with complete operation diagnostics
- 3-way valve control
- the control of the system over the Internet (optional)
- operation control protection in 23 points
- Scroll compressor fixing shock absorbers
- a stoving varnish housing (white, grey or steel, acid-proof)
- internal hydraulic connections made of stainless steel
- a gas sight-glass (gas quantity and humidity control)
- soundproofing of compressors and housing
- a cooling function (optional)
- electric heaters from 3 to 9KW (optional)
- soft start (optional)
- water flow sensors (optional)