1 Important information/Safety instructions
1.1 Safety precautions
Danger Hazardous electrical voltage! The terminal blocks are live and may
cause death through electric shock. All power supplies must be isola-
ted before electrical installation is started.
Warning Before making any electrical work, turn off the power supply connec-
ted to the heat pump.
Warning Electrical installation may only be carried out by an authorized electri-
cian and must follow applicable local and national regulations (IEC
60335-2-40).
Warning Risk of personal injury! Children are not permitted to play with the
product.
1.2 About the document
This manual is only intended for professional and trained installers and electricians with prior experience in installing heat pumps &
accessories. Industrial standards, common branch practice and local regulations must always be followed, even if not explicitly stated in
this document.
1.3
Max load
Max load on 230V feeding relays (marked "FR..") or potential free relays (marked "R..") is 230W with normal motors. Max 850W with soft
starting loads.
Max total load on EM3 is 5A.
Max load on TRIAC output (marked "TR") = 10VA
Total max load on 24V supply to supply mixing valve actuators: 21VA
IMPORTANT! Requires Genesis software version 7.01 or later. Please note that a restart of the control system is required for the installa-
tion to establish communication between the heat pump and the Expansion module. This is indicated by the following icon in the dis-
play top bar (the same symbol is used in "Operating mode" in the display to execute a restart):
Installation Guide
Expansion Module 3 (EM3)
ACEM301IG0502 Thermia AB
4
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