O
F
F
O
N
O
F
F
O
N
1
2
C=
H=
3
4
NOTE
■
1 2
3 4
■
■
NOTE
■
■
S
TART
-
UP
AND CONFIGURATION
The following table summarizes the required configuration and
thermostat wiring at the terminal block in the switch box. Pump
The unit should be configured by the installer to match the installation
environment (outdoor climate, installed options, etc.) and user
expertise.
operation is listed in the third column. The three last columns indicate
whether the following functionality is available on the user interface
(UI) or handled by the thermostat (T):
· space heating or cooling on/off (y)
It is important that
all
information in this chapter is read
· heating/cooling changeover (=)
sequentially by the installer and that the system is
· heating and cooling schedule timers (pr)
configured as applicable.
Pump
Thermostat
Configuration
operation
y
=
pr
DIP switch settings overview
DIP switch SS2 is located on the switch box PCB (see "Switch box
No thermostat
· SS2-3=OFF
· wiring: (non)
X2M
determined by
leaving water
temperature
(a)
UI
UI
UI
main
components (door 2)" on page 13) and allows configuration of
H C L N
domestic hot water tank installation, room thermostat connection and
1 2 3 4
pump operation.
· SS2-3=ON
on when space
UI
UI
UI
· wiring:
heating or
WARNING
cooling is on
Switch off the power supply before opening the switch box
service panel and making any changes to the DIP switch
X2M
H C L N
1 2 3 4
(y)
settings.
1 2
3 4
Heating only
thermostat
· SS2-3=ON
· wiring: (see
on when
heating
T
—
—
installation
manual of the
room
thermostat kit)
request by
room
thermostat
DIP
switch
Thermostat with
· SS2-3=ON
on when
T
T
—
SS2
Description
ON
OFF
heating/cooling
· wiring: (see
heating
Not applicable for installer
—
(Default)
switch
installation
manual of the
request or
cooling request
Domestic hot water tank
installation
Installed
Not installed
(Default)
room
thermostat kit)
by room
thermostat
(see "Domestic hot water
tank installation
configuration" on page 24)
Cooling contact
Heating contact
Room thermostat
Room thermostat
No room
L, N =
208 V/230 V AC
connection
connected
thermostat
(a) The pump will stop when space heating/cooling is turned off or when the water
(see "Room thermostat
connected
reaches the desired water temperature as set on the user interface. With space
installation configuration"
on page 23)
(Default)
heating/cooling turned on, the pump will then run every 5 minutes during 3
minutes to check the water temperature.
This setting
(a)
decides the
operation mode when
Heating/cooling
priority
Priority to highest
demand side
(b)
Pump operation configuration
there is a simultaneous
demand for more space
heating/cooling and
domestic water heating.
To set the pump speed, refer to "Setting the pump
(a) only applicable in case DIP switch 2 = ON
speed" on page 25.
(b) Heating/cooling or domestic water heating mode can be restricted by schedule
timer and/or field settings (4, 5, 8).
Without room thermostat: DIP switch SS2-3=OFF
Room thermostat installation configuration
When no thermostat is connected to the unit, pump operation will be
determined by the leaving water temperature.
When
no room thermostat
is connected to
the unit, toggle switch SS2-3 should be set to
OFF.
To force continuous pump operation when no room thermostat is
connected do the following:
- set toggle switch SS2-3 to ON,
- short-circuit the terminal numbers 1-2-4 on the terminal block
When a
room thermostat
is connected to the
1 2
3 4
in the switch box.
unit, toggle switch SS2-3 should be set to
ON.
With room thermostat: DIP switch SS2-3=ON
When a thermostat is connected to the unit, the pump will operate
On the room thermostat, set the hysteresis appropriately to
continuously whenever there is heating or cooling demand requested
prevent the pump from repeatedly turning on and off (i.e.
by the thermostat.
chattering), and thereby impacting the lifetime of the pump.
Dual set point
When dual set point is enabled, the pump operation will be
When a room thermostat is connected to the unit,
determined depending on the status of the DIP switch SS2-3 and set
the heating and cooling schedule timers are never
point selection contacts. Refer to the pump operation configurations
available. Other schedule timers are not affected.
when the thermostat is connected or not as described above.
For more information on the schedule timers, refer
to the operation manual.
When dual set point is enabled, the "forced continuous
When a room thermostat is connected to the unit,
and the
=
button or
y
button is pressed, the
centralised control indicator
e
will flash to
indicate that the room thermostat has priority and
controls on/off operation and changeover
pump operation" is not possible. When SS2-3 is ON while
SP1 and SP2 are both closed, the pump operation will be
the same operation as "with room thermostat" and the
second set point will be the applicable set point. Refer to
"Dual set point control" on page 30.
operation.
EDLQ036~054B EBLQ036~054BA6VJU1
Installation manual
Unit for air to water heat pump system
4PW56182-1
23
