Daikin Altherma HT Installationshandbuch PDF herunterladen (Seite 8)

Installation manual

EKHVH/X016BB6V3 + EKHVH/X016BB6+9WN

Daikin Altherma indoor unit

4PW64331-1 – 07.2010

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.

Space heating and cooling

According to the season, the customer will select heating or cooling

through the user interface on the indoor unit.

The outdoor unit (1) will operate in heating mode or cooling 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 2-way valve (13) is closed to

prevent cold water running through the ﬂoor heating loops (FHL).

The ON/OFF setting of the heating/cooling operation is done by the

user interface on the indoor unit.

Application 5

Space heating with an auxiliary boiler (alternating operation)

Space heating application by either the Daikin indoor unit or by an

auxiliary boiler connected in the system. The decision whether either

the EKHV* indoor unit or the boiler will operate can be achieved by an

auxiliary contact or an EKHV* indoor controlled contact.

The auxiliary contact can e.g. be an outdoor temperature thermostat,

an electricity tariff contact, a manually operated contact, etc. See

"Field wiring conﬁguration A" on page 6.

The EKHV* indoor unit controlled contact (also called 'permission

signal for the auxiliary boiler") is determined by the outdoor

temperature (thermistor located at the outdoor unit). See "Field wiring

conﬁguration B" on page 6.

Bivalent operation is only possible for space heating operation, not

for the domestic water heating operation. Domestic hot water in such

an application is always provided by the domestic hot water tank

which is connected to the Daikin indoor unit.

The auxiliary boiler must be integrated in the piping work and in the

ﬁeld wiring according to the illustrations below.

1 Outdoor unit

2 Indoor unit

3 Heat exchanger

4 Backup heater

5 Pump

6 Shut-off valve

7 Shut-off valve

8 Collector (ﬁeld supply)

9 Motorised 3-way valve (delivered with the domestic hot

water tank)

11 Domestic hot water tank (optional)

12 Heat exchanger coil

15 Boiler (ﬁeld supply)

16 Aquastat valve (ﬁeld supply)

17 Shut-off valve (ﬁeld supply)

18 Non-return valve (ﬁeld supply)

FHL1...3 Floor heating loop (ﬁeld supply)

Field wiring conﬁguration A

Field wiring conﬁguration B

Details on pump conﬁguration can be found under

"8.3. Pump operation conﬁguration" on page 24.

NOTICE

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 4.

NOTICE

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.

CAUTION

■ Be sure that the boiler and the integration of the boiler

in the system is in accordance with relevant European

and national regulations.

■ Daikin can not be put responsible for incorrect or

unsafe situations in the boiler system.

Boiler

thermostat input

Boiler thermostat input

A Auxiliary contact (normal closed)

H Heating demand room thermostat (optional)

K1A Auxiliary relay for activation of EKHV* unit

(ﬁeld supply)

K2A Auxiliary relay for activation of boiler (ﬁeld supply)

Boiler

thermostat input

Boiler thermostat input

C Cooling demand room thermostat (optional)

H Heating demand room thermostat (optional)

Com Common room thermostat (optional)

K1A Auxiliary relay for activation of bolier unit

(ﬁeld supply)

KCR Permission signal for the auxiliary boiler

FHL1

FHL2

FHL3

4321 9 18

16 17

123 4

K1A

K2A

Boiler

thermostat input

EKHV*/auto

/ Boiler

EKHV*

X2M

Com

X1 X2

K1A

KCR

EKRP1HB*

Boiler

thermostat input

3 4

Com

K1A

EKHV*

X2M

EKRTR*

3 4

Com

K1A

EKHV*

X2M

EKRTW*

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 47 48

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