42 WSH-XEE2 10.2-120.2 M08P40G16-00
9.2 Hot side hydronic unit congurations
1 standard unit 4 Heating side hydronic unit with two on-o pumps
2 VARYFLOW + (heating side 2 inverter pumps) 5 Heating side three-way modulating valve
3 Heating side hydronic unit with an on-o pump 6 Heating side two-way modulating valve
IN = Hot side intake
OUT = Hot side outlet
PD - Dierential pressure switch
SC = Plate heat exchangers
SP = Circuit charging pressure switch, calibrated to 0.7 bar
VS = Safety valve
VSR = Relief valve
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