Start-Up; Electrical Connections - Danfoss EvoFlat 4.0 M Installation Manual

Installation Guide

3.2 Start-up

Start-up, Direct heating
The shut-off valves should be opened and the unit observed as it enters service. Visual
checking should confirm temperatures, pressures, acceptable thermal expansion and
absence of leakage.
If the heat exchanger operates in accordance with design, it can be put to regular use.
After water has been added to the system and the system has been put into operation,
re-tighten ALL connections. Check that all hairpins in click connections are completely
pushed in.
Start-up, Heating with mixing loop (on the EvoFlat 4.0 M version)
Start-up:
1: Pump speed
Set the pump to its highest speed of rotation before start-up. On radiator systems,
the selector switch is normally set in "Variable curve / Proportional curve" setting, in
"max. pos.". For floor heating systems, the selector switch is normally set in "Constant
curve" setting, in "max. pos.".
2: Start pump
Start the pump and heat through the system.
3: Open shut-off valves
The shut-off valves should then be opened and the unit observed as it enters service.
Visual checking should confirm temperatures, pressures, acceptable thermal expan-
sion and absence of leakage.
If the system operates in accordance with design, it can be put to regular use, — always
taking into account the conditions in the building.
4: Vent system
Switch off the pump and vent the installation after the system has been warmed up.
Please note that some pump types feature a built-in venting function. For others the
installation can be vented by using a vent valve in the flat station or on the radiators,
or, if appropriate, the air valve at the highest point of the system — For additional
information, please refers to the enclosed pump and manual.
5: Adjust pump speed
Set the pump to the lowest possible position, depending on the heating requirement
for the building — taking into account aspects such as cooling and power consumption.
If the heating requirement increases the pump setting can be changed by means
of the selector switch. Please refer to the enclosed instruction manual for detailed
information about setting ranges.
In the summer, you can switch off the power to the pump at the mains if you want to
save electricity by not heating your home. It should be ensured that no inappropriate
hydraulic situation will occur, when the power to your pump is turned off.
For start-up and venting — see above and the enclosed pump manual.

3.3 Electrical connections

Before making electrical connections, please note the following:
Safety notes
Please read the relevant parts of the safety notes.
Point with picture of how the earth connection is to be mounted (the rail).
230 V
The flat station must be connected to 230 V AC and earth. Only valid for the M version
or F version when using room thermostat and TWA (as an option).
Disconnection
The substation must be electrically connected so that it can be disconnected for repairs.
Grounding / potential compensation
The station should be connected to a grounding point.
6 | © Danfoss | DCS-SGDPT/PL | 2022.01
EvoFlat 4.0 Flat Stations for apartments, single- and multi-family houses
Re-thighten connections
After water has been added to the system and
the system has been put into operation, re-tight-
en ALL connections.
Check that all hairpins in click connections are
completely pushed in.
Authorized electrician
Electrical connections must be made by an au-
thorized electrician only.
Local standards
Electrical connections must be made in accord-
ance with current regulations and local standards.
AN40274706699301-010101