Daikin EHYKOMB33AA2 [23/136] 12 13 14 18 20
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Daikin EHYKOMB33AA2 [23/136] 12 13 14 18 20

Daikin EHYKOMB33AA2 [23/136] 12 13 14 18 20
7 Installation
Installer reference guide
23
EVLQ05+08CAV3 + EHYHBH05AA + EHYHBH/X08AA +
EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1A – 2016.02
INFORMATION
The following illustration is an example and might NOT
match your system layout.
M
6
10
11
12
13
14
18
20
15
2
7
8
16
c
a
d
b
17
19
3
1
4
5
9
a Outdoor unit
b Indoor unit
c Gas boiler
d Domestic hot water tank
Item Description Wires Maximum
running
current
Outdoor unit and indoor unit power supply
1 Power supply for
outdoor unit
2+GND
(a)
2 Power supply and
interconnection cable to
indoor unit
3+GND
(g)
3 Power supply gas
boiler
2+GND
(c)
4 Preferential kWh rate
power supply (voltage
free contact)
2
(e)
5 Normal kWh rate power
supply
2 6.3A
User interface
6 User interface 2
(f)
Optional equipment
7 3‑way valve 3 100mA
(b)
8 Domestic hot water
tank thermistor
2
(d)
9 Power supply for drain
pan heater
2
(b)
10 Room thermostat/heat
pump convector
3 or 4 100mA
(b)
11 Outdoor ambient
temperature sensor
2
(b)
12 Indoor ambient
temperature sensor
2
(b)
Field supplied components
13 Shut-off valve 2 100mA
(b)
14 Electricity meter 2
(b)
15 Domestic hot water
pump
2
(b)
16 Alarm output 2
(b)
17 Changeover to external
heat source control
2
(b)
18 Space cool/heat
operation control
2
(b)
Item Description Wires Maximum
running
current
19 Power consumption
digital inputs
2 (per input
signal)
(b)
20 Gas meter 2
(b)
(a) Refer to name plate on outdoor unit.
(b) Minimum cable section 0.75mm².
(c) Use the cable supplied with the boiler.
(d) The thermistor and connection wire (12m) are delivered
with the domestic hot water tank.
(e) Cable section 0.75mm² till 1.25mm²; maximum length:
50m. Voltage-free contact shall ensure the minimum
applicable load of 15VDC, 10mA.
(f) Cable section 0.75mm² till 1.25mm²; maximum length:
500m. Applicable for both single user interface and dual
use interface connection.
(g) Cable section 1.5mm
2
; maximum length: 50m.
NOTICE
More technical specifications of the different connections
are indicated on the inside of the indoor unit.
7 Installation
7.1 Overview: Installation
This chapter describes what you have to do and know on-site to
install the system.
Typical workflow
Installation typically consists of the following stages:
1 Mounting the outdoor unit.
2 Mounting the indoor unit.
3 Mounting the gas boiler.
4 Connecting the condensate pipe.
5 Connecting the refrigerant piping.
6 Checking the refrigerant piping.
7 Charging refrigerant.
8 Connecting the water piping.
9 Connecting the electrical wiring.
10 Connecting the gas piping.
11 Connecting the boiler to the flue gas system.
12 Finishing the outdoor installation.
13 Finishing the indoor installation.
14 Finishing the gas boiler installation.
INFORMATION
Depending on the units and/or the installation conditions, it
might be necessary to connect electrical wiring before you
can charge refrigerant.
7.2 Opening the units
7.2.1 About opening the units
At certain times, you have to open the unit. Example:
▪ When connecting the refrigerant piping
▪ When connecting the electrical wiring
▪ When maintaining or servicing the unit
DANGER: RISK OF ELECTROCUTION
Do NOT leave the unit unattended when the service cover
is removed.

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