7
The unit
Temperature sensor overview
1. Duct connections
2. Additional dust connections (it is possible to move the noz-
zles from the top of the unit side separately)
3. Filter change cover (loosen the thumb screws and take the
door off)
4. Extract air filter
5. Outdoor air filter (pollen filter is placed here if required)
6. Counterflow heat exchanger
7. USB cable (connection of PC)
8. Heat pump
9. Automation CTS602
10. Fans
11. 100% bypass damper
12. Pre-heating element for frost protection (Polar version
only)
13. 180 l hot water tank
14. 1,5 kW electrical supplement heater (with overheat protec-
tion, click after dropouts)
15. Condensate drain with water trap
16. Supplementary coil (only SOL version)
17. Plumbing connections
18. Emergency mode (domestic hot water)
19. Control panel (HMI touch-panel)
20. 8-pin plug
Compact S Compact S Polar
Temperature sensors inside the unit
T1: Outdoor air inside duct connection (before
pre-heating element)
T2: Supply air
T4: Extract air after heat exchanger
T5: Condenser
T6: Evaporator
T10: Extract air
RH: Humidity sensor
Temperature sensors outside the unit
T7: Supply air after heating element
(accessory)
Temperature sensors in the hot water tank
T11: Top of tank
T12: Bottom of tank
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