Functional Diagram; Installation Of The Indoor Unit; Selecting An Installation Location - Daikin EKHBHE008BA3V3 Installation Manual

12. X9A socket
The X9A socket receives the thermistor connector (only for
installations with domestic hot water tank).
13. Fuse FU2 (in line fuse)
14. Transformer TR1
15. A4P
Digital I/O PCB (only for installations with solar kit or digital I/O
PCB kit).
NOTE The electrical wiring diagram can be found on the
inside of the switch box cover.

Functional diagram

2 3 4 5
R1T
t >
H O
2
R3T
t >
1 13
1 Outdoor unit
2 Indoor unit
3 Expansion vessel
4 Manometer
5 Air purge valve
6 Pressure relief valve
7 Backup heater
8 Pump
9 Flow switch
Installation manual
12
6 7 8
R2T
t >
R4T
t >
12
10 Shut-off valve water outlet
with drain valve (field
installation)
11 Shut-off valve water inlet with
drain valve (field installation)
12 Filter
13 Heat exchanger
R1T
R2T
Temperature sensors
R3T
R4T
I
NSTALLATION OF THE INDOOR UNIT

Selecting an installation location

The unit is to be wall mounted in an indoor location that meets the
following requirements:
The installation location is frost-free.
The space around the unit is adequate for servicing.
figure 2).
The space around the unit allows for sufficient air circulation.
There is a provision for condensate drain (only for EKHBX
models with drain pan kit EKHBDP) and pressure relief valve
blow-off.
The installation surface is a flat and vertical non-combustible
wall, capable of supporting the operation weight of the unit (see
"Technical specifications" on page
There is no danger of fire due to leakage of inflammable gas.
All piping lengths and distances have been taken into
consideration.
Maximum allowable refrigerant piping length between
9
outdoor unit and indoor unit
Minimum required refrigerant piping length between
outdoor unit and indoor unit
Maximum allowable height difference between
outdoor unit and indoor unit
Maximum allowable distance between the 3-way
10
valve and the indoor unit (only for installations with
domestic hot water tank).
Maximum allowable distance between the domestic
hot water tank and the indoor unit (only for
installations with domestic hot water tank). The
thermistor cable supplied with the domestic hot water
tank is 12 m in length.
During normal operation the hydrobox unit will produce sound
which could be observed as noise. The sound origin can be
water pump operation and/or contactor activation. Therefore it is
11
advisable to install the hydrobox unit on a firm wall and not in nor
close to a sound sensitive environment (e.g. bedroom).
Do not install the unit in places with high humidity (e.g.
bathroom).
Select piping diameter in relation to required water flow and
available ESP of pump.
The equipment is not intended for use in a potentially explosive
atmosphere.
Do not install the unit in places often used as work place.
In case of construction works (e.g. grinding works) where a lot of
dust is created, the unit must be covered.
Take care that in the event of a water leak, water can not cause
any damage to the installation space and surroundings.
Do not place any objects or equipment on top of the unit.
Be sure that sufficient precautions are taken, in accordance with
relevant local and national regulations, in case of refrigerant
leakage.
CAUTION
If the installation is equipped with a domestic hot water
tank (optional), please refer to the domestic hot water tank
installation manual.
37).
Requirement
Indoor unit for air to water heat pump system
(See
Value
30 m
3 m
20 m
3 m
10 m
EKHBH/XE008BA
4PW56301-1A