System; Additional Heat Generators; Inputs/Outputs - Daikin EHSX04P30D Manuel D'utilisation

4 Function
4.4.2

System

[→ Main menu → Settings → System]
This menu combines basic parameters of the heating system.
Further explanations and possible settings for this menu can be
found in Chap. 7.5.2.
4.4.3

Additional heat generators

[→ Main menu → Settings → Ext. source]
This menu can be used to configure the integration of an optional ex-
ternal heat source.
The heat supplied by an alternative WEZ must be fed to the unpres-
surised storage tank water in the Daikin Altherma EHS(X/H) hot wa-
ter storage tank.
▪ When using the optional BUxx backup heater, this is carried out
due to the design installation situation.
▪ If an alternative WEZ (e.g. gas- or oil-fired boiler) is used, this can
be hydraulically integrated
▪ unpressurised via the connections (solar feed and solar return)
of the hot water storage tank or
▪ in the case of Daikin Altherma EHS(X/H) ...B device types, via
the integrated pressurised solar system heat exchanger
.
The setting of the [Config. of external heat source] parameter is used
to define if any additional heat generator (WEZ) is available for do-
mestic hot water preparation and heating support, and which.
▪ No external heat source
▪ Optional backup heater
▪ Ext. heat sources HW and HZU: Alternative WEZ provide do-
mestic hot water preparation and backup heating. To request the
WEZ, relay K3 on printed circuit board RTX-EHS is switched.
▪ Ext. heat source HW or HZU: Alternative WEZ 1 (optional BUxx
backup heater) undertakes domestic hot water preparation and al-
ternative WEZ 2 undertakes heating support. To request WEZ 1,
relay K3, and to request WEZ 2, relay K1, on printed circuit board
RTX-EHS is switched respectively. Heed warning notice! The op-
eration of an additional alternative WEZ is also influenced by the
settings of the [Bivalence function] and [Bivalence temperature]
parameters.
Further explanations and possible settings for this menu can be
found in Chap. 7.5.3.
4.4.4

Inputs/Outputs

[→ Main menu → Settings → Inputs/Outputs]
This menu can be used to adjust parameter for inputs and outputs of
the controller PCB to optimise the system controller individually.
Smart grid
WARNING
There is a danger of scalds at hot water target temperat-
ures over 65 °C. This is possible because the utility com-
pany (EVU) is entitled to control current draw optimised ac-
cording to supply and demand in the definitions for Smart
Grid.
Due to such forced charging, the hot water target temper-
ature in the hot water storage tank can exceed 65 °C.
This storage tank charging is carried out even when the
[Standby] operating mode is set.
▪ Install scald protection in the hot water distribution line.
(3)
Switching contacts at input J8 of the RoCon BM2C PCB closed (1) or open (0).
(4)
No frost protection function
Operating Instructions
16
To use this function, a special electricity meter with SG receiver to
which the Daikin Altherma EHS(X/H) must be connected is required.
As soon as the function is activated by the [Smart grid] parameter,
the heat pump is set to an operating mode as per
ing on the utility company signal.
(3)
Signal Electricity
costs
EVU SG
1 0 ---
0 0 Normal
0 1 Low
1 1 Very low
Tab. 4-4 Use of the SG signal
AUX switching function
Setting the [AUX switching function] parameter selects the switching
conditions for the potential-free AUX switching contact (toggle switch
output A). This switching contact can be used to control an external
heat generator, for example.
If one of the switching conditions is fulfilled, the potential-free switch-
ing contact is switched after the time set in the [AUX delay time]
parameter.
AUX switching contact (toggle switch output A) is not switched if
setting is deactivated.
AUX switching contact (toggle switch output A) is switched, if set-
ting
▪ Storage tank temperature (T
dhw
parameter value.
▪ if an error is pending.
▪ Outside temperature < [Equilibrium Temp] parameter value.
▪ Heat request for domestic hot water preparation.
▪ Heat request for room heating.
▪ Heat request for room heating or domestic hot water preparation.
Interlink function
Setting the [Interlink function] parameter = On offers the possibility
that the Daikin Altherma EHS(X/H) two different feed temperature
setpoints are included in the control.
This applies to both weather-compensated control and control ac-
cording to a fixed feed target temperature (see
One possible application is, for example, the additional integration of
an HP convector in a surface heating and cooling system.
Prerequisite: 2 switching contacts are connected to Daikin Altherma
EHS(X/H) plug connection J16 (e.g. room thermostats).
▪ [Interlink function] parameter = Off: Deactivated
Tab. 4-4 depend-
Effect on
Domestic hot Heating install-
water ations
(4)
No operation No operation
Normal opera- Normal opera-
tion tion
Switch-on re- Switch-on re-
commendation commendation
and storage and flow tem-
tank temperat- perature set-
ure setpoint is point are in-
increased de- creased de-
pending on the pending on the
[Mode Smart [Mode Smart
Grid] para- Grid] para-
meter. meter.
Switch-on com- Switch-on com-
mand and stor- mand for stor-
age tank tem- age tank char-
perature set- ging.
point is set to
70 °C.
) ≥ [TDHW switching threshold]
Chap. 4.5).
Daikin RoCon+ HP
Daikin Controller RoCon+ HP
008.1444299_01 – 09/2018 – EN
(4)