Daikin Altherma EHVZ04S18CB Installer's Reference Manual page 44

8 Configuration
# Code
[A.2.2.1] [E-05] DHW operation:
Can the system prepare domestic hot
water?
▪ 0 (No): NOT installed.
▪ 1 (Yes)(default): Installed. Remark:
The domestic hot water tank is by
default installed. Do NOT change this
setting.
[A.2.2.A] [D-02] The indoor unit offers the possibility to
connect a field supplied domestic hot
water pump (On/OFF type). Depending
on the installation and configuration on
the user interface, we distinguish its
functionality.
DHW pump:
▪ 0 (No)(default): NOT installed.
▪ 1 (Secondary rtrn): Installed for instant
hot water when water is tapped. The
end-user sets the operation timing
(weekly
domestic hot water pump when it
should run. Control of this pump is
possible through the indoor unit.
▪ 2
disinfection.
disinfection function of the domestic
hot water tank is running. No further
settings are needed.
See also illustrations below.
Domestic hot water pump installed for...
Instant hot water
c
a
f
b
g
a Indoor unit
b Tank
c Domestic hot water pump (field supply)
d Heater element (field supply)
e Non‑return valve (field supply)
f Shower (field supply)
g Cold water
Thermostats and external sensors
Following combinations are possible to control the unit (not
applicable when [C‑07]=0):
When [C‑07]=2 (RT control)
User interface at Room thermostat at
(1)
indoor unit main zone
When [C‑07]=1 (Ext RT control)
(1) Not mandatory.
(2) When there is no user interface installed at the indoor unit, the user interface in the main zone will function as room thermostat AND user interface.
Installer reference guide
44
Description
schedule time) of the
(Disinf. shunt): Installed
It runs when the
Disinfection
c
a
d
b
e
External room
(2)
thermostat at
additional zone
User interface at
indoor unit
NOTICE
If an external room thermostat is used, the external room
thermostat will control the room frost protection. However,
the room frost protection is only possible if the leaving
water temperature control on the unit's user interface is
turned ON.
See "5 Application guidelines" on
# Code
[A.2.2.4] [C-05]
for
f
g
[A.2.2.5] [C-06]
External room External room
thermostat at main thermostat at
zone additional zone
page 11.
Description
Contact type main
In external room thermostat control, the
contact type of the optional room
thermostat or heat pump convector for
the main leaving water temperature zone
must be set. See "5 Application
guidelines" on page 11.
▪ 1 (Thermo ON/OFF): The connected
external room thermostat or heat
pump convector sends the heating
demand to the indoor unit (X2M/1).
Select this value in case of a
connection to the heat
convector (FWXV).
▪ 2 (H/C request)(default):
connected external room thermostat
sends a heating demand and is
connected to the digital
(preserved for the main leaving water
temperature zone) on the indoor unit
(X2M/1). Select this value in case of
connection with the wired (EKRTWA)
or wireless (EKRTR1)
thermostat.
Contact type add.
In external room thermostat control with
2 leaving water temperature zones, the
type of the optional room thermostat for
the additional leaving water temperature
zone must be set. See "5 Application
guidelines" on page 11.
▪ 1 (Thermo ON/OFF): See Contact
type main. Connected on the indoor
unit (X2M/1a).
▪ 2 (H/C request)(default): See Contact
type main. Connected on the indoor
unit (X2M/1a).
ERLQ004~008CA + EHVZ04+08S18CB
Daikin Altherma – Low temperature split
4P401676-1D – 2018.07
pump
The
input
room