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EWAA011~016DA + EWYA009~016DA
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P620242-1 – 2020.06
Control
Define how the operation of the unit is controlled.
Control
Leaving water
External room
thermostat
Room thermostat
#
Code
[2.9]
[C‑07]
Thermostat type
Only applicable in external room thermostat control.
NOTICE
If an external room thermostat is used, the external room thermostat will control the
room frost protection. However, the room frost protection is only possible if [C.2]
Space heating/cooling=On.
#
Code
[2.A]
[C‑05]
Leaving water temperature: Delta T
In heating for the main zone, the target delta T (temperature difference) depends
on the selected emitter type for the main zone.
Delta T is the absolute value of the temperature difference between the leaving
water and entering water.
In this control...
Unit operation is decided based on the leaving water
temperature regardless the actual room temperature
and/or heating or cooling demand of the room.
Unit operation is decided by the external thermostat or
equivalent (e.g. fan coil units).
Unit operation is decided based on the ambient
temperature of the dedicated Human Comfort Interface
(BRC1HHDA used as room thermostat).
▪
0: Leaving water
▪
1: External room thermostat
▪
2: Room thermostat
External room thermostat type for the main
zone:
▪
1: 1
contact: The used external room
thermostat can only send a thermo ON/OFF
condition. There is no separation between
heating or cooling demand. The room
thermostat is connected to only 1 digital input
(X2M/35).
▪
2: 2
contacts: The used external room
thermostat can send a separate heating/cooling
thermo
ON/OFF
thermostat is connected to 2 digital inputs
(X2M/35 and X2M/34).
Select this value in case of a connection to the
wired (EKRTWA) or wireless (EKRTR1) room
thermostat
11
Configuration
|
Description
Description
condition.
The
Installer reference guide
room
141
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