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Application guidelines
Installer reference guide
46
E Room 3
a Heat pump convectors (+ controllers)
b Dedicated Human Comfort Interface (BRC1HHDA used as room thermostat)
c Mixing valve station
d Pressure regulating valve (field supply)
e Safety thermostat (field supply)
f Bizone kit control box (EKMIKPOA)
g Bypass valve
h Hydraulic separator (balancing bottle)
i Direct pump (for additional zone) (e.g. unmixed pump group EKMIKHUA)
INFORMATION
A pressure regulating valve should be implemented before the mixing valve station.
This is to guarantee the correct water flow balance between the main leaving water
temperature zone and the additional leaving water temperature zone in relation to
the required capacity of both water temperature zones.
▪
A bypass valve must be installed to make water recirculation possible when all
shut-off valves are closed. To guarantee reliable operation, provide a minimum
water flow as described in table "To check the water volume and flow rate" in
"8.1 Preparing water
▪
For the main zone:
-
The mixing valve station (including pump + mixing valve) is installed before the
underfloor heating.
-
The mixing valve station is controlled by the bizone kit controller (EKMIKPOA)
based on the heating request of the room.
-
The room temperature is controlled by the dedicated Human Comfort
Interface (BRC1HHDA used as room thermostat).
-
Ensure water circulation is possible in main zone when shut-off valves are
closed
-
In cooling mode, you can allow the underfloor heating (main zone) to provide
refreshment (no real cooling), or NOT allow it.
If allowed:
Do NOT install a shut-off valve.
Set [F-0C]=0 to activate the setpoint screen of [2] Main zone and [1] Room.
Set the leaving water temperature of the main zone NOT too low (typically:
20°C)
If NOT allowed, install a shut-off valve (field supply) and connect it to X2M/21
and X2M/28 for a normally open valve or X2M/21 and X2M/29 for a normally
closed valve.
4
piping" [
86].
EPRA14~18D + ETBH/X16E
Daikin Altherma 3 H HT W
4P644736-1D – 2023.10
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