EKHBH/X016BB
Indoor unit for air to water heat pump system
4PW62572-1A – 01.2011
Installation manual
6
Application 3
Space heating and cooling application with the
room thermostat set
for heating/cooling
connected to the indoor unit. Heating is provided
through floor heating loops and fan coil units. Cooling is provided
through the fan coil units only.
Domestic hot water is provided through the domestic hot water tank
which is connected to the indoor unit.
1
Outdoor unit
2
Indoor unit
3
Heat exchanger
4
Backup heater
(1)
5
Pump
6
Shut-off valve
7
Motorised 3-way valve (delivered with domestic hot water
tank)
8
Motorised 2-way valve (field supply)
9
Collector (field supply)
10
Domestic hot water tank (optional)
11
Booster heater
(2)
12
Heat exchanger coil
FCU1...3
Fan coil unit (optional)
FHL1...3
Floor heating loop
T
Room thermostat (optional)
Pump operation and space heating and cooling
According to the season, the customer will select heating or cooling
on the room thermostat (T). This selection is not possible by
operating the user interface.
When space heating/cooling is requested by the room thermostat
(T), the pump will start operating and the indoor unit (
) will switch to
"heating mode"/"cooling mode". The outdoor unit (
operating to achieve the target leaving hot/cold water temperature.
In case of cooling mode, the 2-way valve (
cold water running through the floor heating loops (FHL).
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
indoor unit.
Domestic water heating
Domestic water heating is as described under
Application 4
Space heating and cooling application
without the room thermostat
connected to the indoor unit
, but with the heating only room
thermostat (set heating only) controlling the floor heating
and the
heating/cooling thermostat (set heating/cooling) controlling the fan
coil units. Heating is provided through floor heating loops and fan coil
units. Cooling is provided through the fan coil units only.
1
Outdoor unit
2
Indoor unit
3
Heat exchanger
4
Backup heater
5
Pump
6
Shut-off valve
7
Motorised 2-way valve to shut off the floor heating loops
during cooling operation (field supply)
8
Motorised 2-way valve for activation of the room thermostat
(field supply)
9
Collector (field supply)
10
By-pass valve (field supply)
FCU1...3
Fan coil unit (optional)
FHL1...3
Floor heating loop
T
Heating only room thermostat (optional)
T4...6
Individual room thermostat for fan coil heated/cooled room
(optional)
Pump operation
With no thermostat connected to the indoor unit (
be configured to operate either as long as the indoor unit is on, or
until the required water temperature is reached.
(1) For tank without electrical booster heater (EKHTS), the backup heater will
be used in domestic water heating mode.
(2) Only applicable for tank with built-in electrical booster heater (EKHW*).
M
FCU1
FCU2
FCU3
9
M
FHL1
FHL2
FHL3
10
11 12
6
4
5
3
2
1
6
7
8
T
NOTICE
■
Make sure to connect the thermostat wires to the
correct terminals (see
) and to configure the DIP switch
toggle switches correctly (see
installation configuration" on page 23
■
Wiring of the 2-way valve (
) is different for a NC
(normal closed) valve and a NO (normal open) valve!
Make sure to connect to the correct terminal numbers
as detailed on the wiring diagram.
INFORMATION
Details on pump configuration can be found under
"8.3. Pump operation configuration" on page 24
T4
T5
T6
T
10
M
FCU1
FCU2
FCU3
9
FHL1
FHL2
FHL3
6
4
5
3
2
1
6
7
8
M
Содержание EKHBH016BB3V3
Страница 54: ......
Страница 55: ......
Страница 56: ...4PW62572 1A 01 2011 Copyright 2010 Daikin ...