Daikin EKHBHE008AA3V3, EKHBXE008AA3V3 Installation manuals
INSTALLATION MANUAL
Indoor unit for air to water heat pump system
For installation WITHOUT restricted power supply condition
>6 kW
EKHBHE008AA3V3
EKHBXE008AA3V3
350
300
8
01
)
)
1
12 3 4 5 678
2x2x 1x1x 1x 1x1x 2x
1
2
2
3
G 1 1/2(male
22
G 1 (male
1
4
3
3
1
5
EKHBHE008AA3V3
EKHBXE008AA3V3
C
ONTENTS
Indoor unit for air to water heat pump system
Page
Introduction........................................................................................ 1
General information ...................................................................................1
Scope of this manual .................................................................................2
Model identification ....................................................................................2
Accessories ....................................................................................... 2
Accessories supplied with the indoor unit.................................................. 2
Typical application examples .............................................................3
Application 1 ..............................................................................................3
Application 2 ..............................................................................................3
Application 3 ..............................................................................................4
Application 4 ..............................................................................................4
Overview of the indoor unit................................................................ 5
Opening the indoor unit.............................................................................. 5
Main components....................................................................................... 6
Switch box main components ....................................................................7
Functional diagram ....................................................................................7
Installation of the indoor unit..............................................................8
Selecting an installation location................................................................ 8
Dimensions and service space ..................................................................8
Inspecting, handling and unpacking the unit.............................................. 8
Mounting the indoor unit ............................................................................9
Installation of the EKHBDP drain pan kit (only for EKHBX models)...........9
Refrigerant pipework.................................................................................. 9
Water pipework.......................................................................................... 9
Charging water......................................................................................... 11
Piping insulation....................................................................................... 11
Field wiring............................................................................................... 11
Start-up and configuration ............................................................... 14
DIP switch settings overview....................................................................14
Room thermostat installation configuration.............................................. 14
Pump operation configuration.................................................................. 15
Domestic hot water tank installation configuration................................... 15
Initial start-up at low outdoor ambient temperatures................................ 15
Pre-operation checks............................................................................... 15
Powering up the indoor unit ..................................................................... 15
Setting the pump speed........................................................................... 16
Field settings............................................................................................ 16
Field settings table................................................................................... 21
Test run and final check...................................................................23
Automatic test run.................................................................................... 23
Test run operation (manual) ..................................................................... 23
Final check............................................................................................... 23
Maintenance....................................................................................23
Troubleshooting ...............................................................................24
General guidelines................................................................................... 24
General symptoms................................................................................... 24
Error codes ..............................................................................................25
Technical specifications ...................................................................26
General ....................................................................................................26
Electrical specifications............................................................................ 26
Installation manual
READ THESE INSTRUCTIONS CAREFULLY BEFORE
INSTALLATION. KEEP THIS MANUAL IN A HANDY
PLACE FOR FUTURE REFERENCE.
IMPROPER INSTALLATION OR ATTACHMENT OF
EQUIPMENT OR ACCESSORIES COULD RESULT IN
ELECTRIC SHOCK, SHORT-CIRCUIT, LEAKS, FIRE OR
OTHER DAMAGE TO THE EQUIPMENT. BE SURE ONLY
TO USE ACCESSORIES MADE BY DAIKIN WHICH ARE
SPECIFICALLY DESIGNED FOR USE WITH THE
EQUIPMENT AND HAVE THEM INSTALLED BY A
PROFESSIONAL.
IF UNSURE OF INSTALLATION PROCEDURES OR USE,
ALWAYS CONTACT YOUR DAIKIN DEALER FOR
ADVICE AND INFORMATION.
THE UNIT DESCRIBED IN THIS MANUAL IS DESIGNED
FOR INDOOR INSTALLATION ONLY AND FOR AMBIENT
TEMPERATURES RANGING 0°C~35°C.
I
NTRODUCTION
General information
Thank you for purchasing this AD indoor unit.
The AD indoor unit is the indoor part of the
reversible air to water Daikin ERHQ heat pumps. These units are
designed for wall mounted indoor installation and used for both
heating and cooling applications. The units can be combined with
Daikin fan coil units, floor heating applications, low temperature
radiators, domestic water heating applications and solar kit for
domestic hot water applications.
Heating/cooling units and heating only units
The AD indoor unit range consists of two main
versions: a heating/cooling (EKHBX) version and a heating only
(EKHBH) version.
Both versions are delivered with an integrated backup heater for
additional heating capacity during cold outdoor temperatures. The
backup heater also serves as a backup in case of malfunctioning of
the outdoor unit.
Backup heater
Indoor unit model Backup heater capacity
EKHB*008AA3V3
NOTE
An EKHBH/XE008 AA 3V3 indoor unit can only be
3 kW 1x 230 V
connected to an outdoor ERHQ00* AD -series.
nominal voltage
EKHBH/XE008AA3V3
Indoor unit for air to water heat pump system
4PW50041-1A
NOTE
The heat pump unit is preset to a restricted power
supply condition mode. The information in this manual
is only valid in case the power supply condition is not
restricted. Refer to the chapter "Field settings" on
page 16 how to disable the restricted power supply
condition mode [D-02].
Installation manual
1
1
2
3
4
1
2
3
4
5
6
7
8
P
H
3
1
2
4
Heat pump capacity
Required heating capacity (site dependent)
Additional heating capacity provided by the backup heater
Equilibriumtemperature (can be set through the user interface,
refer to "Field settings" on page 16)
T
Ambient (outdoor) temperature
A
P
Heating capacity
H
T
A
Domestic hot water tank (option)
An optional EKHW* domestic hot water tank with integrated 3 kW
electrical booster heater can be connected to the indoor unit. The
domestic hot water tank is available in three sizes: 150, 200 and
300 litre. Refer to the domestic hot water tank installation manual for
further details.
Drain pan kit (option)
For heating/cooling versions (EKHBX), it is necessary to install the
EKHBDP drain pan kit.
For more information concerning the drain pan kit, refer to
"Installation of the EKHBDP drain pan kit (only for EKHBX models)"
on page 9.
Solar kit for domestic hot water tank (option)
For information concerning the EKSOLHW solar kit, refer to the
installation manual of that kit.
Remote alarm kit (option)
For information concerning the EKRP1HB remote alarm, refer to the
installation manual of that kit.
Model identification
Indoor unit
EK HB XE 008 AA 3 V3
Backup heater nominal
voltage:
V3 = 1P, 230 V
Backup heater capacity (kW)
Series
Indication of heating/cooling capacity (kW)
XE = heating and cooling,
HE = heating only
Hydro box
European kit
(a) For exact values, refer to "Technical specifications" on page 26.
Drain pan kit (optional)
EK HB DP 150
Drain pan
Hydro box
European kit
CCESSORIES
A
Accessories supplied with the indoor unit
See figure 1
Installation manual
Operation manual
Unpacking instruction sheet
Shut-off valve
Wall mounting bracket
Wiring diagram sticker (inside indoor unit cover)
Indoor unit cover fixing screw
Nylon washer
(a)
Scope of this manual
This installation manual describes the procedures for unpacking,
installing and connecting all EKHBH/X indoor unit models.
NOTE
Installation of the ERHQ heat pump outdoor is
described in the outdoor unit installation manual.
Operation of the indoor unit is described in the indoor
unit operation manual.
Installation manual
2
Indoor unit for air to water heat pump system
EKHBH/XE008AA3V3
4PW50041-1A
T
YPICAL
APPLICATION
EXAMPLES
Application 2
1
6
2
7
3
4
5
T
1
10
2
11
3
12
4
5
6
7
8
9
When the AD system is used in series
with another heat source (e.g. gas boiler), it shall be made
sure that the return water temperature to the heat
exchanger does not exceed 55°C. Daikin shall not be held
liable for any damage resulting from not observing this
rule.
The application examples given below are for illustration purposes
only.
Application 1
Space heating only application with a room thermostat connected to
the indoor unit.
T
5 64321
7
Outdoor unit
Indoor unit
Heat exchanger
Pump
Shut-off valve
FHL1..3 Floor heating loop
Pump operation and space heating
When a room thermostat (T) is connected to the indoor unit, the
pump (4) will operate when there is a heating request from the room
thermostat, and the outdoor unit will start operating to achieve the
target leaving water temperature as set on the user interface.
When the room temperature is above the thermostat set point, the
outdoor unit and pump will stop operating.
Make sure to connect the thermostat wires to the correct
terminals (see "Connection of the thermostat cable" on
page 13) and to configure the DIP switch toggle switches
correctly (see "Room thermostat installation configuration"
on page 14).
FHL1
FHL2
FHL3
Collector (field supply)
Shut-off valve
(field supply)
Room thermostat
(field supply)
Space heating only application without room thermostat connected to
the indoor unit. The temperature in each room is controlled by a valve
on each water circuit. Domestic hot water is provided through the
domestic hot water tank which is connected to the indoor unit.
54321
7
Outdoor unit
Indoor unit
Heat exchanger
Pump
Shut-off valve
Collector (field supply)
Shut-off valve
Motorised 3-way valve
(field supply)
By-pass valve
(field supply)
8 6
T1
M
M1
111210
FHL1
Booster heater
Heat exchanger coil
Domestic hot water tank
FHL1..3 Floor heating loop
T1..3 Individual room
M1..3 Individual motorised
(field supply)
thermostat (field supply)
valve to control loop
FHL1 (field supply)
T3
M2T2M3
FHL2
9
FHL3
Pump operation
With no thermostat connected to the indoor unit (2), the pump (4) can
be configured to operate either as long as the indoor unit is on, or
until the required water temperature is reached.
NOTE
Details on pump configuration can be found under
"Pump operation configuration" on page 15.
Space heating
The outdoor unit (1) will operate to achieve the target leaving water
temperature as set on the user interface.
When circulation in each space heating loop (FHL1..3) is
controlled by remotely controlled valves (M1..3), it is
important to provide a by-pass valve (9) to avoid the flow
switch safety device from being activated.
The by-pass valve should be selected as such that at all
time the minimum water flow as mentioned under "Water
pipework" on page 9 is guaranteed.
EKHBH/XE008AA3V3
Indoor unit for air to water heat pump system
4PW50041-1A
Installation manual
3
1
10
2
11
3
12
4
13
5
6
Domestic water heating
When domestic water heating mode is enabled (either manually by
the user, or automatically through a schedule timer) the target
domestic hot water temperature will be achieved by a combination of
the heat exchanger coil and the electrical booster heater.
When the domestic hot water temperature is below the user configured
set point, the 3-way valve will be activated to heat the domestic water
by means of the heat pump. In case of large domestic hot water
demand or a high domestic hot water temperature setting, the booster
heater (10) can provide auxiliary heating.
It is possible to connect either a 2-wire or a 3-wire 3-way
valve (8). Make sure to fit the 3-way valve correctly. For
more details, refer to "Wiring the 3-way valve" on page 14.
NOTE
The indoor unit can be configured so that at low
outdoor temperatures the domestic water is exclusively
heated by the booster heater. This assures that the full
capacity of the heat pump is available for space
heating.
Details on domestic hot water tank configuration for
low outdoor temperatures can be found under "Field
settings" on page 16, field settings [5-02] to [5-04].
Application 3
Space cooling and heating application with a room thermostat
suitable for cooling/heating changeover 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.
6
Pump operation and space heating and cooling
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 indoor unit (2) will switch to
"cooling mode"/"heating mode". The outdoor unit (1) will start
operating to achieve the target leaving cold/hot water temperature.
In case of cooling mode, the motorised 2-way valve (13) will close as
to prevent cold water running through the floor heating loops (FHL).
Make sure to connect the thermostat wires to the correct
terminals (see "Connection of the thermostat cable" on
page 13) and to configure the DIP switch toggle switches
correctly (see "Room thermostat installation configuration"
on page 14).
Wiring of the 2-way valve (13) 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.
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 2" on
page 3.
Application 4
Space cooling and heating application without a room thermostat
connected to the indoor unit , but with a heating only room
thermostat controlling the floor heating and a cooling/heating
thermostat 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.
T
54321
8 13
M M
7
Outdoor unit
Indoor unit
Heat exchanger
Pump
Shut-off valve
Collector (field supply) FCU1..3 Fan coil unit (field supply)
7 Shut-off valve FHL1..3 Floor heating loop
8 Motorised 3-way valve
(field supply) T Room thermostat with
FCU1
111210
FHL1
12
Booster heater
Heat exchanger coil
Domestic hot water tank
Motorised 2-way valve
(field supply)
(field supply)
cooling/heating switch
(field supply)
FCU2
FHL2
FCU3
FHL3
9
6
T4
T5
FCU1
T
54321
7
13M14
M
FCU2
FHL1
T6
FCU3
6
FHL2
FHL3
Installation manual
4
Indoor unit for air to water heat pump system
EKHBH/XE008AA3V3
4PW50041-1A
1 Outdoor unit 14 Motorised 2-way valve for
2 Indoor unit
3 Heat exchanger
4 Pump FCU1..3 Fan coil unit with
5 Shut-off valve
6 Collector (field supply) FHL1..3 Floor heating loop (field
7 Shut-off valve
9 By-pass valve (field
supply)
13 Motorised 2-way valve
to shut off the floor
heating loops during
cooling operation (field
supply)
T4..6 Individual room
activation of the room
thermostat (field supply)
thermostat (field supply)
supply)
T Heating only room
thermostat (field supply)
thermostat for fan coil
heated/cooled room (field
supply)
Pump operation
With no thermostat connected to the indoor unit (2), the pump (4) can
be configured to operate either as long as the indoor unit is on, or
until the required water temperature is reached.
OVERVIEW OF THE INDOOR UNIT
Opening the indoor unit
■ The front flap on the indoor unit cover gives access to the
manometer and user interface.
■ The indoor unit cover can be removed by removing the 2 side
screws and unhitching the cover.
NOTE
Details on pump configuration can be found under
"Pump operation configuration" on page 15.
Space heating and cooling
According to the season, the customer will select cooling or heating
through the user interface on the indoor unit.
The outdoor unit (1) will operate in cooling mode or heating mode to
achieve the target leaving water temperature.
With the unit in heating mode, the 2-way valve (13) is open. Hot water
is provided to both the fan coil units and the floor heating loops.
With the unit in cooling mode, the motorised 2-way valve (13) is
closed to prevent cold water running through the floor heating loops
(FHL).
When closing several loops in the system by remotely
controlled valves, it might be required to install a by-pass
valve (9) to avoid the flow switch safety device from being
activated. See also "Application 2" on page 3.
Wiring of the 2-way valve (13) 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.
The ON/OFF setting of the heating/cooling operation is done by the
user interface on the indoor unit.
Make sure to fix the cover with the screws and nylon
washers when installing the cover (screws and nylon
washers are delivered as accessory).
Parts inside the unit can be hot.
■ To gain access to the switch box components – e.g. to connect
the field wiring – the switch box service panel can be removed.
Thereto, loosen the front screws and unhitch the switch box
service panel.
Switch off all power supply — i.e. outdoor unit power
supply and backup heater and domestic hot water tank
power supply (if applicable) — before removing the switch
box service panel.
EKHBH/XE008AA3V3
Indoor unit for air to water heat pump system
4PW50041-1A
Installation manual
5
Main components
22
21
20
19
18
3
17
16
15
14
13
10
12
1
2
3
4
5
6
3
7
3
8
9
10
11
1. Air purge valve
Remaining air in the water circuit will be automatically removed
via the air purge valve.
2. Backup heater
The backup heater consists of an electrical heating element that
will provide additional heating capacity to the water circuit if the
heating capacity of the outdoor unit is insufficient due to low
outdoor temperatures.
3. Temperature sensors
Four temperature sensors determine the water and refrigerant
temperature at various points in the water circuit.
4. Switch box
The switch box contains the main electronic and electrical parts
of the indoor unit.
5. Heat exchanger
6. Expansion vessel (10 l)
7. User interface
The user interface allows the installer and user to set up, use
and maintain the unit.
8. Refrigerant liquid connection
9. Refrigerant gas connection
10. Shut-off valves (accessory)
The shut-off valves on the water inlet connection and water
outlet connection allow isolation of the indoor unit water circuit
side from the residential water circuit side. This facilitates
draining and filter replacement of the indoor unit.
11. Water inlet connection
12. Water outlet connection
13. Drain and fill valves
14. Water filter
The water filter removes dirt from the water to prevent damage
to the pump or blockage of the evaporator. The water filter must
be cleaned on a regular base. See "Maintenance" on page 23.
15. Expansion vessel drain valve
The drain valve of the expansion vessel allows draining the
remaining water in the expansion vessel after draining with the
drain and fill valves.
16. Manometer
The manometer allows readout of the water pressure in the
water circuit.
17. Flow switch
The flow switch checks the flow in the water circuit and protects
the heat exchanger against freezing and the pump against
damage.
18. Pump
The pump circulates the water in the water circuit.
19. Backup heater vessel
The backup heater heats the water in the backup heater vessel.
20. Backup heater thermal protector
The backup heater is equipped with a thermal protector. The
thermal protector is activated when the temperature becomes
too high.
21. Backup heater thermal fuse
The backup heater is equipped with a thermal fuse. The thermal
fuse is blown when the temperature becomes too high (higher
than the backup heater thermal protector temperature).
22. Pressure relief valve
The pressure relief valve prevents excessive water pressure in
the water circuit by opening at 3 bar and discharging some
water.
Installation manual
6
Indoor unit for air to water heat pump system
EKHBH/XE008AA3V3
4PW50041-1A
Switch box main components
6M
14
12
11
10
TR1
X9A
TR1
X13A
SS2
FU1
9
on
off
K1M
K1M
SS1
on
SS2
A1P
A1P
K4M
K7M
OPTION EKHW
F2B
F2B
K5M
K5M
OPTION EKHW
K3M
K3M
F1B
12. X9A socket
The X9A socket receives the thermistor connector (only for
installations with domestic hot water tank).
13. In line fuse FU2
1
14. Tr ansformer TR1
15. A4P
Solar/remote alarm address card (only for installations with solar
kit or remote alarm kit)
16. K7M relay for solar pump (optional)
This relay and its output on X2M can be activated when the solar
2
3
16
input on A4P becomes active.
NOTE
The electrical wiring diagram can be found on the
inside of the switch box cover.
Functional diagram
4
432 5 9
6 7 8
5
F1B
OPTION EKHW
X4M
12
X4M
OPTION EKHW
X3M
X3M (230V)
A4P
A4P
L1 L2
LN
7
2-way valve
thermostat 3-way valve
K
FU2
13
6
8910111213 14 15 16 17 181234 56
Q2L
thermal
OPTIONAL
fuse
X2M
X1M
6
15
8
7
1. Backup heater contactors K1M and K5M
2. Main PCB
The main PCB (Printed Circuit Board) controls the functioning of
the unit.
3. Booster heater contactor K3M (only for installations with
domestic hot water tank)
4. Booster heater circuit breaker F2B (only for installations with
domestic hot water tank)
The circuit breaker protects the booster heater in the domestic
hot
water tank against overload or short circuit.
5. Backup heater circuit breaker F1B
The circuit breaker protects the backup heater electrical circuit
against overload or short circuit.
6. Ter minal blocks
The terminal blocks allow easy connection of field wiring.
7. Cable tie mountings
The cable tie mountings allow to fix the field wiring with cable
ties to the switch box to ensure strain relief.
8. Ter minal blocks X3M, X4M (only for installations with domestic
hot water tank)
9. PCB fuse FU1
10. DIP switch SS2
The DIP switch SS2 provides 4 toggle switches to configure
certain installation parameters. See "DIP switch settings
overview" on page 14.
11. X13A socket
The X13A socket receives the K3M connector (only for
installations with domestic hot water tank).
R1T
t >
R2T
t >
10
11
H
O
R3T
t >
2
R4T
t >
12
13141
1 Outdoor unit 10 Flow switch
2 Indoor unit 11 Shut-off valve water outlet
3 Expansion vessel drain
valve
4 Expansion vessel 12 Shut-off valve water inlet with
5 Manometer
6 Air purge valve 13 Filter
7 Pressure relief valve 14 Heat exchanger
8 Backup heater vessel
with backup heater
9 Pump
with drain valve (field
installation)
drain valve (field installation)
R1T
R2T
Temperature sensors
R3T
R4T
EKHBH/XE008AA3V3
Indoor unit for air to water heat pump system
4PW50041-1A
Installation manual
7
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