Ouellet ETO2 - Manuel (Page 19)

© 2013 OJ Electronics A/S 32
Type ETO2
Fig. 9 Advanced 2-stage electric heating control (Y/Δ) Fig. 10 Advanced 2-stage connection (Y/Δ)
BR978A28a BR978A04a
ETF-522
Hot water Optional
Main Pump
3 way
valve
Circulation
Pump
Return sensor
Supply sensor
Optional
air sensor
Ground sensor
ETF-522
Fig. 11 1-zone hydronic heating control for controling the supply water temp. with mixing valve
BR978C01a
BR978A04a
© 2010 OJ Electronics A/S
BR978A04a