INSTALLATION MANUAL - Daikin AC

Functional diagram
INSTALLATION OF THE INDOOR UNIT
2 3 4 5 6 7 8
1
R1T
t >
R3T
t >
H 2 O
13
R4T
t >
1 Outdoor unit 10 Shut-off valve water outlet
2 Indoor unit
with drain valve (field
installation)
3 Expansion vessel 11 Shut-off valve water inlet with
4 Manometer
drain valve (field installation)
5 Air purge valve 12 Filter
6 Pressure relief valve 13 Heat exchanger
7 Backup heater R1T
8 Pump
R2T
R3T
Temperature sensors
9 Flow switch
R4T
R2T
t >
12
9
10
11
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. (See
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 43).
■ There is no danger of fire due to leakage of inflammable gas.
■ All piping lengths and distances have been taken into
consideration.
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Requirement
Maximum allowable refrigerant piping length between
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
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.
Value
246 ft
(75 m)
9.8 ft (a)
(3 m)
98.4 ft
(30 m)
9.8 ft
(3 m)
32.8 ft
(10 m)
(a) When