Daikin RoCon HP - Weather-Controlled Flow Temperature Regulation

Operating instructions
24
Daikin RoCon HP
Daikin Controller
008.1420844_13 – 02/2016
3 x Operation
The cooling characteristic curve is specified using the following
four parameters:
1. [Start T-Out Cooling]
2. [Max T-Out Cooling]
3. [T-Flow Cooling start]
4. [T-Flow Cooling max]
During the weather-controlled flow temperature regulation, the
use
r can adjust the inflow target temperature using the parameter
[Cooling Setpoint adj] by a maximum of 5 K up or down. 
The lower temperature limit is limited by the parameter [Min T-
Flow Co
oling].
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 cha
racteristic
curve
--- Possible parallel dis-
placement of the cool-
ing characteristic
cur
ve
Fig. 3-16 Parameter-dependency of characterist
ic cooling curve
More detailed explanations and possible setting values for this function can be seen
in chapter 6.2.3.
If the average outdoor temperature, with the activated
operating mode "Cooling", falls below 4 °C, the operat-
ing mode automatically switches to "Heating".
Automatic switching of the operating mode to "Cooling"
again can only take place if:
– a room thermostat is connected to the plug connec-
tion J16 (cooling ) and
– the switch contact on the room thermostat i
s closed
and
– the average outdoor temperature is over 10 °C
ag
ain.
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], section 6.10) is determined automatically in accordance
with the set heating/cooling curve depending on the outside tem-
perature.
In delivery status, this function is activated. It can only be deacti-
vated or reactivated with the technician code (set point control).
T
he weather-controlled flow temperature regulation can be opti-
mised with the Ro
Con OT1 optional external temperature probe,
which can be installed on the north face of the building. If no
RoCon OT1 is installed, the Controller RoCon HP uses the value
for the outside temperature measured in the exterior heat pump
unit.
If the room station (EHS15
7034) is additionally connected to the
Daikin Altherma EHS(X/H), the inflow target temperatures will be
co
ntrolled dependent on the weather and room temperature 
(see tab. 6-3 / tab. 6-16, 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-Fl
ow Day] or parameter
[T-Flow Night]
– In cooling mode: parameter [T-Flow Cooling]
The weather-controlled flow temperature regulation
has no influence on the set flow temperature in the
event of a demand from the hot water circuit.
If a mixer module is connected
The setting of the heating/cooling curves and the activation of the
weather-based flow 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 (RoC
on OT1) must
be connected to the mixer module. The assigned heating cir-
cuit is regulated based on the relevant outside temperature
for this zone.
When the terminal function is activated, the mixer module is op-
erated via the RoCon B1 control element of the Daikin
A
ltherma EHS(X/H), and the settings for the assigned heating
circuit are performed.
In conjunction 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 displaye
d it may be nec-
essary to update the device software before the ter-
minal function can be used. Contact the Daikin Service
Team in such cases.
More detailed explanations and possible setting values for this function can be seen
in sections 6.2.3 and 6.13.2.
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.