Operating instructions
26
Daikin RoCon HP
Daikin Controller
008.1420844_13 – 02/2016
3
x
Operation
3.6.8 Heating support
If the heating support function (parameter [HZU] = On) is acti-
vated, the energy in the Daikin Altherma EHS(X/H) integrated
storage tank is used to take over the heating function. At a suffi-
ciently high storage tank temperature, the heat pump (refrigerant
circuit) remains out of use.
The minimum value (T
HZUmin
) is calculated as follows:
T
HZUmin
= Current active target hot water temperature
[T-DHW Setpoint] + parameter [TDiff-DHW CH].
Switch-on condition:
Tdhw > T
HZUmin
+ 4 K
and
Tdhw > info parameter [T-HS Set-
point] + 1 K
If the switch-on condition is fulfilled, heat is taken from the
storage tank for the heating system.
Switch-off condition:
Tdhw < T
HZUmin
or
Tdhw < info parameter [T-HS Setpoint]
(see section 3.6.4)
If the switch-off condition is fulfilled, the heating support is
stopped in the domestic hot water storage tank and the heat
pump takes over the heating operation.
Parameter [Power BIV] limits the maximum power which can be
removed. Parameter [T vbh1 max] limits the maximum temper-
ature which the heating system can reach.
More detailed explanations and possible setting values for this function can be seen
in chapter 6.2.2.
3.6.9 Special function: Switching contacts
Setting the parameter [AUX Fct] changes the switching condi-
tions for the AUX switching contact (toggle switch output A).
This switching contact can be used, for example, to control an ex-
ternal heat generator.
If one of the switching conditions is fulfilled, the potential-free
switching contact changes over after the time set in the pa-
rameter [AUX time] has passed.
AUX switching contact
(toggle switch output
A
)
is
not switched
if setting =
0: Function deactivated.
AUX switching contact
(toggle switch output
A
)
is switched
if
setting =
1: When storage tank temperature (Tdhw)
≥
value of param-
eter [T-DHW 1 min].
2: When there is a cooling or heating demand.
3: When there is a hot water demand to the Backup Heater
(EKBUxx) or the configured Backup Heater is required for
heating support.
4: When there is a malfunction.
5: When sensor value (TVBH) > 60°C.
6: When the outdoor temperature < parameter value [Equilib-
rium Temp].
Heat pump continues to operate = parallel bivalence oper-
ation.
7: When the outdoor temperature < parameter value [Equilib-
rium Temp] + there is a heating or hot water demand.
Heat pump does not continue to operate = alternative
bivalence operation.
8: When there is a hot water demand.
9: When outside temperature < parameter value [Equilibrium
Temp] + heat demand "Room heating" (not for hot water
demand). Heat pump no longer operates in room heating
mode below the value set in parameter [Equilibrium Temp] -
only in hot water mode.
Use: An alternative bivalency operation room heating, if the
boiler is incorporated hydraulically in such a way that it heats
the depressurised storage tank water in the Daikin
Altherma EHS(X/H) directly (connection via solar connec-
tions).
10: "Multi-Oil" - if outside temperature < parameter value
[Equilibrium Temp] + heat demand "Room heating" (not for
hot water demand). Heat pump no longer operates in room
heating mode below the value set in parameter [Equilibrium
Temp] - only in hot water mode.
Use: An alternative bivalency operation room heating, if the
boiler is hydraulically incorporated in the flow of the heat
pump. For this type of application, the frost protection function
must be deactivated on the Daikin Altherma EHS(X/H)
(parameter [T-Frost Protect] = Off).
The frost protection must be provided via the boiler
in this option.
The potential-free
AUX switching contact
(switching output
B
)
always closes if the heat pump is in "Cooling" mode.
More detailed explanations and possible setting values for this function can be seen
in chapter 6.2.2.
3.6.10 Air Purge
By activating the Air Purge the RoCon HP Controller starts a de-
fined sequence program with Start-Stop operation of the inte-
grated heat circulation pump and various settings for the 3-way
diverter valve integrated into the Daikin Altherma EHS(X/H).
Existing air can leak from the automatic venting valve during the
Air Purge and the heating circuit connected to the Daikin
Altherma EHS(X/H) is evacuated.
The activation of this function does not replace the
correct venting of the heating circuit.
Prior to activating this function, the heating circuit must
be completely filled.
1. Enter the expert code (see section 3.6.1).
The
"Setup"
level is displayed after entering.
2. Select the [
Air Purge
] parameter using the rotary switch.
3. Confirm the changes with a brief push of the rotary switch.
The setting for the parameter is displayed.
4. Using the rotary switch, set the parameter for the function to
"On"
and confirm by pressing it quickly.
"Air Purge"
starts (3-way diverter valves into middle posi-
tion, heating circulation pump modulated - see fig. 3-17).
After the programme is completed (approx. 10 min), the
Daikin Altherma EHS(X/H) switches to "Standby" operat-
ing mode.
