Installation manual
12
EKHBH/XE008BA
Indoor unit for air to water heat pump system
4PW56301-1A
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).
Functional diagram
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.
.
■
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 37
■
There is no danger of fire due to leakage of inflammable gas.
■
All piping lengths and distances have been taken into
consideration.
■
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
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.
NOTE
The electrical wiring diagram can be found on the
inside of the switch box cover.
1
Outdoor unit
10
Shut-off valve water outlet
with drain valve (field
installation)
2
Indoor unit
3
Expansion vessel
11
Shut-off valve water inlet with
drain valve (field installation)
4
Manometer
5
Air purge valve
12
Filter
6
Pressure relief valve
13
Heat exchanger
7
Backup heater
R1T
R2T
R3T
R4T
Temperature sensors
8
Pump
9
Flow switch
R4T
H
2
O
t >
R3T
t >
R2T
t >
R1T
t >
9
10
11
3
2
4
8
12
13
1
5
6 7
Requirement
Value
Maximum allowable refrigerant piping length between
outdoor unit and indoor unit
30 m
Minimum required refrigerant piping length between
outdoor unit and indoor unit
3 m
Maximum allowable height difference between
outdoor unit and indoor unit
20 m
Maximum allowable distance between the 3-way
valve and the indoor unit (only for installations with
domestic hot water tank).
3 m
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.
10 m
CAUTION
If the installation is equipped with a domestic hot water
tank (optional), please refer to the domestic hot water tank
installation manual.
Содержание EKHBHE008BA3V3
Страница 40: ...4PW56301 1A Copyright 2009 Daikin ...
