Operating instructions
20
Daikin RoCon HP
Daikin Control
008.1420844 – 05/2014
3
x
Operation
During the weather-controlled flow temperature regulation, the
user can adjust the inflow target temperature using the parameter
[Cooling Setpoint adj] by a maximum of 5 °C up or down. The
lower temperature limit is limited by the parameter [Min T-Flow
Cooling].
1
Parameter [Start T-Out Cooling]
2
Parameter [Max T-Out Cooling]
3
Parameter [T-Flow Cooling start]
4
Parameter [T-Flow Cooling max]
5
Parameter [Min T-Flow Cooling]
6
Target room temperature
7
Cooling operation possible
T
A
External temperature
T
V
Flow temperature
―
Cooling characteristic
curve
---
Possible parallel dis-
placement of the cool-
ing characteristic
curve
Fig. 3-15 Parameter-dependency of characteristic cooling curve
More detailed explanations and possible setting values for this function can be seen
in chapter 5.2.3.
3.6.4 Weather-controlled flow temperature regulation
If the weather-controlled flow temperature regulation is active,
the inflow target temperature (see info parameter [T-HS Set-
point], chapter 5.10) is determined automatically in accordance
with the set heating/cooling curve depending on the outside tem-
perature.
The weather-controlled flow temperature regulation can be opti-
mised with the
RoCon OT1
optional external temperature probe
which can be installed on the north face of the building. If no
RoCon OT1
is installed, the Control RoCon HP uses the value for
the outside temperature measured in the exterior heat pump unit.
If the room station (
EHS157034
) is additionally connected to the
Daikin Altherma EHS(X/H), the inflow target temperatures will be
controlled dependent on the weather and room temperature
(see tab. 5-3 / tab. 5-16, parameter [Room Influence]). Activation
and deactivation of this function takes place via the parameter
[HC Function] in the rotary switch position
"Configuration"
in
level
"HC Configuration"
.
– Parameter [HC Function] = 0: Weather-controlled flow tem-
perature regulation
– Parameter [HC Function] = 1: Regulation according to fixed
inflow target temperature
– In heating mode: Parameter [T-Flow Day] or parameter
[T-Flow Night]
– In cooling mode: Parameter [T-Flow Cooling]
If a mixer module
is connected
The setting of the heating/cooling curve and the activation of the
weather-based infeed temperature regulation for the assigned
heating circuit is performed in the same way as described above.
There is the option of operating the assigned heating circuit as a
a) Mixer extension
The outside temperature determined by the outside
temperature sensor connected to the Daikin Altherma
EHS(X/H) is transmitted to the mixer module via the CAN bus.
or as
b) Mixer extension with zone regulation
A separate outside temperature sensor (
RoCon OT1
) must
be connected to the mixer module. The assigned heating cir-
cuit is regulated by the relevant outside temperature for this
zone.
When the terminal function is activated, the mixer module is op-
erated via the Control RoCon HP of the Daikin Altherma
EHS(X/H), and the settings for the assigned heating circuit are
performed.
In connection with the EHS157034 room station, the mixer
module can also autonomously control the assigned heating
circuit, fully independently of the Daikin Altherma EHS(X/H).
If the message "n. A." is displayed at the rotary switch
setting
, the control unit has yet to be assigned a
valid terminal address.
If the message "n. A." is still displayed it may be nec-
essary to update the device software before the ter-
minal function can be used. Contact the Daikin Service
Team for this.
More detailed explanations and possible setting values for this function can be seen
in chapters 5.2.3 and 5.13.2.
3.6.5 Frost protection function
If the outdoor temperature is below the parameter value [T-Frost
Protect], the integrated heating circulation pump is switched on in
order to prevent the heating system from freezing.
In addition, the inflow, storage tank and connected room temper-
ature sensors are continually monitored. If the temperature
measured by any of these sensors drops below 7 °C (in the case
of room temperature: 5 °C), the frost protection function is auto-
matically activated.
When the frost protection function is active, the Control RoCon
HP standard display shows the
symbol alongside the time.
If the inflow heating temperature drops below 7 °C, the Daikin
Altherma EHS(X/H) heats up until the temperature reaches at
least 12 °C once more.
The function ceases once the outside temperature has risen to
the set parameter value [T-Frost Protect] + 1 K is reached and
there are no other activation conditions present.
Off-peak tariff activated;
– parameter [HT/NT Function] = 3
or
– parameter [SMART GRID] = 1,
the heat pump operation can be completely switched
off by the energy supply company for a limited period of
time. In such cases, no additional heating is carried out
and the internal device heating circulation pump are not
switched on, even in frost-protection conditions.
These situations can be recognised as the "Overview"
information level (see section 3.4.1) in the operating
data field "Ext" displays the value "HT" or "SG1".
