Installation manual
2
EWAQ+EWYQ005~007ACV3P
Packaged air-cooled water chillers and
packaged reversible air to water heat pumps
4PW33165-1D
A
CCESSORIES
T
YPICAL
APPLICATION
EXAMPLES
These application examples are given for illustration purposes only.
Application 1
Space heating and cooling application (without thermostat).
The digital controller (DC) is installed indoors and allows the user to
turn the unit (1) ON or OFF, to select between cooling and heating
mode (only in case of a heat pump model) and to set the water
temperature. When the unit is turned on, it will provide water at the
set temperature to the fan coil units (FCU1..3).
Application 2
Space cooling and heating application with a room thermostat
suitable for cooling/heating changeover connected to the unit.
■
Pump operation and space heating and cooling (space cooling
and heating application with a room thermostat suitable for
cooling/heating changeover connected to the unit )
According to the season, the customer will select cooling or
heating on the room thermostat (T). This selection is not
possible by operating the user interface.
When space cooling/heating is requested by the room
thermostat (T), the pump will start operating and the unit will
switch to “cooling mode”/”heating mode”. The outdoor units will
start operating to achieve the target leaving cold/hot water
temperature.
The ON/OFF setting of the heating/cooling operation is done by
the room thermostat and cannot be done by the user interface
on the unit.
Installation manual
1
Operation manual
1
Shut-off valve
2
Wiring diagram sticker
(inside top unit cover)
1
Remote controller kit
(digital controller, 4 fixing screws and 2 plugs)
1
1
Reversible heat pump
7
Bypass valve
2
Plate heat exchanger
FCU1..3
Fan coil unit
(field supply)
3
Expansion vessel
4
Pump
DC
Digital controller
5
Shut-off valve
RT1..3
Room thermostat
(field supply)
6
Motorised valve (field supply)
FCU1
M
RT1
FCU2
M
RT2
FCU3
M
RT3
DC
2
3 4
5
1
5
6
7
1
Reversible heat pump
7
Shut-off valve
2
Plate heat exchanger
FCU1..3
Fan coil unit
(field supply)
3
Expansion vessel
4
Pump
T
Room thermostat or
room thermostat with
cooling/heating switch
(field supply)
5
Shut-off valve
6
Collector (field supply)
Make sure to connect the thermostat wires to the correct
terminals (see
"Connection of the thermostat cable" on
T
6
2
3 4
5
1
7
FCU1
FCU2
FCU3
