| EKRUCBL1A | EKRUCBL1C | EKRUCBL1 | EKRUCBL3A | EKRUCBL3C | EKRUCBL3 | EKRUCBL4A | EKRUCBL4C | EKRUCBL4 | EKRUCBL5A | EKRUCBL5C | EKRUCBL5 | EKRUCBL6A | EKRUCBL6C | EKRUCBL6 | EKRUCBL7A | EKRUCBL7C | EKRUCBL7 | EKRUCBL8C | EKRUCBL2C | EKRUCBL2 | EKRUCBL2A | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Control systems | Class of temperature control | VI | VI | VI | VI | VI | VI | VI | VI | VI | VI | VI | VI | VI | VI | VI | VI | VI | VI | VI | VI | VI | VI | |
| Contribution to seasonal space heating efficiency | % | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | |