Compressor — R407C compressor — 3.8 kW cooling, 1.41 kW input, COP 2.68 at the AHRI 7.2/54.4 °C rating point.
A Copeland listing, from the manufacturer's published data.
| Model | Copeland ZR18K4E-PFV (R407C scroll, 50 Hz, AC) |
| Refrigerant | R407C |
| Performance data | AHRI 540 / EN 12900 10-coefficient map |
| Reference superheat / subcool | 11.1 / 8.3 K |
| Cooling capacity @ 7.2/54.4 °C | 3.78 kW |
| Input power @ 7.2/54.4 °C | 1.41 kW |
| COP @ 7.2/54.4 °C | 2.68 |
AHRI 540 / EN 12900 ten-coefficient polynomials in evaporating and condensing temperature, rated at 11.1 K superheat and 8.3 K subcooling; the solver corrects them to the operating superheat and subcooling. Envelope: the manufacturer's 5-sided polygon. The mass-flow coefficient set is published too, and the solver checks it against the capacity set.
| te / tc °C | Capacity kW | Power kW | COP |
|---|---|---|---|
| -20 / 30 | 1.52 | 0.81 | 1.88 |
| -20 / 40 | 1.33 | 1.01 | 1.31 |
| -10 / 30 | 2.60 | 0.81 | 3.21 |
| -10 / 40 | 2.32 | 1.02 | 2.28 |
| 0 / 30 | 4.06 | 0.80 | 5.05 |
| 0 / 40 | 3.66 | 1.01 | 3.61 |
| 0 / 60 | 2.83 | 1.63 | 1.74 |
| 10 / 30 | 6.02 | 0.78 | 7.69 |
| 10 / 40 | 5.49 | 0.99 | 5.56 |
| 10 / 60 | 4.33 | 1.60 | 2.70 |
Points on a 10 K grid inside the published envelope; the builder solves any point in it, and warns past it.
Open the builder and pick this listing from the catalog picker — the solver runs it with the catalog's own figures, at your design point or across a year of weather.
| compressors | Copeland ZR18K4E-PFV (R407C scroll, 60 Hz, AC) | R407C |
| Compressor maps converted from the vendor's own rating database | 4 776 maps | every basis median within 3.2 % of the nomenclature; the vendor's polynomial substituted exactly, never refitted |
From the validation page; every row is held by a test.
Listed from published data; a listing's figures are the manufacturer's, the model that runs them is ours. Solver results never depend on who has claimed what.