Viessmann Stagnation cooler type 21 & 33

Stagnation cooler type 21/33
Stagnation cooler to protect the system components from overheating.

optionally:

type 21
- Power at 75/65 °C: 482 W
- Cooling capacity at stagnation: 964 W
type 33
- Power at 75/65 °C: 834 W
- Cooling power at stagnation: 1668 W