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HIU2VSAI-HIU2VSUI-IM-DE-W-UK-07-2021-Rev1 | Part no. 10081491
EN
ENGLISH
Before first use, check all screw con-
nections and tighten if necessary!
Torque:
• 3/4” screw connection: 35 Nm
• 1” screw connection: 55 Nm
3.2 Mounting the HIU2 combi-cabinet
1. Mount the combi-cabinet (see installation diagram on page
1
Heating flow circuit
2
Heating return circuit
3
DHW outlet
4
Domestic water circulation inlet
5
Domestic cold water outlet
6
Domestic cold water inlet
7
Primary flow
8
Primary return
1
2
3
4
5
6
7
8
