Figure 2. Heat pump operation diagram
4.2.
Refrigerant R290
Refrigerant R290 is a naturally occurring hydrocarbon in natural gas deposits. It has no ozone depletion
potential (ODP = 0) and a negligible direct global warming effect (GWP = 3). It well mixes up with mineral
oil, and with regard to heating efficiency offers performance corresponding to HCF refrigerants e.g. R134A ,
R404A.
Technical data:
- Standard evaporation temperature (at 1bar abs.): -42°C;
- Critical temperature: 97°C;
- Explosion limits: 2.1÷9.5% vol. in the air;
- Compatibility of materials: does not cause corrosion.
4.3.
Operation range
The below performance diagram relates to safe heat pump operation depending on T2 temperature (heated
water temperature) up to T1 temperature (air temperature). Ther4 controller automatically adjusts
temperature of heated water to weather conditions, what ensures safe compressor operation and extends its
service life.
Operation Manual and Guarantee Card v.010
HKS LAZAR Sp.z o.o. ul. Wodzisławska 15B 44-335 Jastrzębie-Zdrój
page.
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