5 Application guidelines
Installer reference guide
14
EWAQ+005BAVP
Packaged air-cooled water chillers and packaged air to water heat
pumps
4P492900-1 – 2017.06
Configuration
Setting
Value
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
1 (Ext RT control): Unit operation
is decided by the external
thermostat.
Number of water temperature
zones:
▪ #: [A.2.1.8]
▪ Code: [7-02]
0 (1 LWT zone): Main
External room thermostat for the
main
zone:
▪ #: [A.2.2.E.5]
▪ Code: [C-05]
1 (Thermo ON/OFF): When the
used external room thermostat or
fan coil unit can only send a
thermo ON/OFF condition.
Benefits
▪
Cooling.
The fan coil unit offers, besides heating capacity, also
excellent cooling capacity.
▪
Efficiency.
Optimal energy efficiency because of the interlink
function.
▪
Stylish.
Combination: Under floor h Fan coil units
▪ Space heating is provided by:
▪ The under floor heating
▪ The fan coil units
▪ Space cooling is provided by the fan coil units only. The
under floor heating is shut off by the shut-off valve.
Setup
B
A
d
M1
a
b
c
A
Main leaving water temperature zone
B
One single room
a
User interface
b
Control box
c
Backup heater (option)
d
Remote controller of the fan coil units
▪ The fan coil units are directly connected to the outdoor unit – or to
the backup heater, if there is one.
▪ A shut-off valve (field supply) is installed before the under floor
heating to prevent condensation on the floor during cooling
operation.
▪ The desired room temperature is set via the remote controller of
the fan coil units.
▪ A space heating/cooling demand signal is sent to one digital input
on control box EKCB07CAV3 (X2M/1 and X2M/2) (if this signal is
available on the fan coil unit and compatible with the control box).
▪ The space operation mode can be sent by one digital output
(X8M/6 and X8M/7) on control box EKCB07CAV3 to:
▪ The fan coil units (if this signal is compatible with the fan coil
units).
▪ The shut-off valve
Configuration
Setting
Value
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
1 (Ext RT control): Unit operation
is decided by the external
thermostat.
Number of water temperature
zones:
▪ #: [A.2.1.8]
▪ Code: [7-02]
0 (1 LWT zone): Main
External room thermostat for the
main
zone:
▪ #: [A.2.2.E.5]
▪ Code: [C-05]
1 (Thermo ON/OFF): When the
used external room thermostat or
fan coil unit can only send a
thermo ON/OFF condition.
Benefits
▪
Cooling.
Fan coil units provide, besides heating capacity, also
excellent cooling capacity.
▪
Comfort.
The combination of the two heat emitter types provides:
▪ The excellent heating comfort of the under floor heating
▪ The excellent cooling comfort of the fan coil units
5.2.2
Multiple rooms – One LWT zone
If only one leaving water temperature zone is needed because the
design leaving water temperature of all heat emitters is the same,
you do NOT need a mixing valve station (cost effective).
Example:
If the heat pump system is used to heat up one floor
where all the rooms have the same heat emitters.
Under floor heating or radiators – Thermostatic
valves
If you are heating up rooms with under floor heating or radiators, a
very common way is to control the temperature of the main room by
using a thermostat (this can either be the user interface connected to
control box EKCB07CAV3, or an external room thermostat), while
the other rooms are controlled by so-called thermostatic valves (field
supply), which open or close depending on the room temperature.
Setup
T
B
C
A
a
b
c
A
Main leaving water temperature zone
B
Room 1
C
Room 2
a
User interface
b
Control box
c
Backup heater (option)
▪ The under floor heating of the main room is directly connected to
the outdoor unit – or to the backup heater, if there is one.
▪ The room temperature of the main room is controlled by the user
interface used as thermostat.
▪ A thermostatic valve is installed before the under floor heating in
each of the other rooms.
