Installation manual
25
E(D/B)(H/L)Q011~0W1
Unit for air to water heat pump system
4PW57621-1A
3
Wire the unit.
Connect the terminals on top of the front part of the digital
controller and the terminals inside the unit (P1 to 16, P2 to 16a).
4
Reattach the upper part of the digital controller.
First begin fitting from the clips at the
bottom.
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.
DIP switch settings overview
DIP switch SS2 is located on the switch box PCB (see
main components (door 2)" on page 13
) and allows configuration of
domestic hot water tank installation, room thermostat connection and
pump operation.
Room thermostat installation configuration
1
Unit
2
Rear part of the digital controller
3
Front part of the digital controller
4
Wired from the rear
5
Wired from the top
6
Notch the part for the wiring to pass through with nippers, etc.
NOTE
■
When wiring, run the wiring away from the
power supply wiring in order to avoid
receiving electric noise (external noise).
■
Peel the shield for the part
that has to pass through the
inside of the digital controller
case (
l
).
Be careful not to pinch the wiring when attaching.
P1
P2
1
1
6
2
3
4
5
P1
P2
16a
16
16a
16
1
It is important that all information in this chapter is read
sequentially by the installer and that the system is
configured as applicable.
WARNING
Switch off the power supply before opening the switch box
service panel and making any changes to the DIP switch
settings.
DIP
switch
SS2
Description
ON
OFF
1
Not applicable for installer
—
(Default)
2
Domestic hot water tank
installation
(see
tank installation
configuration" on page 26
Installed
Not installed
(Default)
3
Room thermostat
connection
(see
installation configuration"
on page 25
Room thermostat
connected
No room
thermostat
connected
(Default)
4
This setting
(a)
decides the
operation mode when
there is a simultaneous
demand for more space
heating/cooling and
domestic water heating.
(a) only applicable in case DIP switch 2 = ON
Heating/cooling
priority
Priority to highest
demand side
(b)
(b) Heating/cooling or domestic water heating mode can be restricted by schedule
timer and/or field settings (4, 5, 8).
■
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 changeover
operation.
4
3
2
1
ON
OFF
4
3
2
1
ON
OFF
4
3
2
1
ON
OFF
Содержание EBHQ011BA6V3
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