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S
-
TART
UP AND CONFIGURATION
The unit should be configured by the installer to match the installation
environment (outdoor climate, installed options, etc.) and user
expertise.
It is important that all information in this chapter is read
sequentially by the installer and that the system is
configured as applicable.
DIP switch settings overview
DIP switch SS2 is located on the switch box PCB (see "Switch box
main components (door 2)" on page 9) and allows configuration of
domestic hot water tank installation, room thermostat connection and
pump operation.
Switch off the power supply before opening the switch box
service panel and making any changes to the DIP switch
settings.
1
DIP
switch
SS2
Description
ON
1
Not applicable for installer
—
2
Domestic hot water tank
Installed
installation
(see "Domestic hot water
tank installation
configuration" on page 20)
3
Room thermostat
Room thermostat
connection
connected
(see "Room thermostat
installation configuration"
on page 19)
(a)
4
This setting
decides the
Heating/cooling
operation mode when
priority
there is a simultaneous
demand for more space
heating/cooling and
domestic water heating.
(a) only applicable in case DIP switch 2 = ON
Room thermostat installation configuration
When no room thermostat is connected to
the unit, toggle switch SS2-3 should be set to
OFF.
When a room thermostat is connected to the
unit, toggle switch SS2-3 should be set to ON.
On the room thermostat, set the hysteresis appropriately to
prevent the pump from repeatedly turning on and off (i.e.
chattering), and thereby impacting the lifetime of the pump.
NOTE
When a room thermostat is connected to the unit,
the heating and cooling schedule timers are never
available. Other schedule timers are not affected.
For more information on the schedule timers, refer
to the operation manual.
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 change over
operation.
Installation manual
19
All manuals and user guides at all-guides.com
2
3
4
OFF
(Default)
Not installed
(Default)
No room
thermostat
connected
(Default)
No priority
(Default)
1
2
3
4
1
2
3
4
The following table summarizes the required configuration and
thermostat wiring at the terminal block in the switch box. Pump
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)
•
heating/cooling changeover (=)
•
heating and cooling schedule timers (pr)
Thermostat
Configuration
No thermostat
• SS2-3 = OFF
• wiring: (non)
X2M
H C L N
1 2 3 4
• SS2-3 = ON
• wiring:
X2M
H C L N
1 2 3 4
Heating only
• SS2-3 = ON
thermostat
• wiring:
X2M
H C
L N
1 2 3 4
th
Thermostat with
• SS2-3 = ON
• wiring:
heating/cooling
switch
X2M
H C
L N
1 2 3 4
H
C
th
th =
C =
H =
L, N =
(a) The pump will stop when space heating/cooling is turned off or when the water
reaches the desired water temperature as set on the user interface. With space
heating/cooling turned on, the pump will then run every 5 minutes during 3
minutes to check the water temperature.
Pump operation configuration
NOTE
To set the pump speed, refer to "Setting the pump
speed" on page 20.
Without room thermostat
When no thermostat is connected to the unit, pump operation will be
determined by the leaving water temperature.
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
in the switch box.
With room thermostat
When a thermostat is connected to the unit, the pump will operate
continuously whenever there is heating or cooling demand requested
by the thermostat.
Pump
operation
y
y
y
y
=
=
=
=
p p p p r r r r
determined by
UI
UI
UI
leaving water
(a)
temperature
on when space
UI
UI
UI
heating or
cooling is on
(y)
on when
T
—
—
heating
request by
room
thermostat
on when
T
T
—
heating
request or
cooling request
by room
thermostat
Thermostat contact
Cooling contact
Heating contact
230 V AC
R(D/B)LQ011~016AA6V3+W1
Unit for air to water heat pump system
4PW53149-1
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