Rotex HPSU compact 304, Instruction Manual

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14
BA ROTEX HPSU compact 4 - 09/2013
3 x Operation
Button block
The operator panel of the RoCon HP can be blocked to prevent
inadvertent actuation (see fig. 3-4).
Unlocking can be carried out in the same way.
The prerequisite for this function is that, in the level
"Setup"
, the
parameter [Keylock Function] is set to "On" (see chapter 6.2.1,
tab. 6-1).
Keylock Function
On
Keylock Function
Keylock Function
Off
Fig. 3-4 Activating and deactivating the button block
3.4 Basic functions and operating modes
The safety settings of the ROTEX HPSU compact
hinder the operation of the heat pump if
– the outdoor temperature is < 12 °C and simultane-
ously
– the storage tank temperature is < 30 °C.
Without backup heater:
At an outdoor temperature < 12 °C, the storage tank
water needs to be heated up by an external heater to
> 30 °C.
With backup heater (BUH):

At an outdoor temperature < 12 °C and a storage tem-
perature < 35 °C, the backup heater (BUH) switches on
automatically to heat the water in the storage tank to
> 30 °C.
Thawing (automatic function)
At low outdoor temperatures and corresponding humidity values,
the external heat pump unit may ice up. This icing impairs effi-
cient operation. The system detects this condition and automati-
cally starts the defrosting operation.
During the thawing mode, heat is drawn from the hot water
storage tank and the backup heater (BUH) is turned on, if re-
quired. Depending on the heat requirement for the thawing oper-
ation, heating of the direct heating circuit may be interrupted
during the thawing process.
After 8 minutes at most, the system returns to normal mode.
3.4.1 System information (Info)
In this rotary switch position, the rotary switch can be used to call
up all the system temperatures, the type of ROTEX HPSU
compact, various software information and the operating sta-
tuses of all system components, one after the other. The number
of displayed parameters depends on the connected components.
No settings can be made to these values.
● Place the rotary switch in the
"Info"
position.

Standard display is shown (see fig. 3-2).
● Press the rotary switch briefly.

The parameter overview is displayed.
● Select the desired information level with the rotary switch.
● Confirm the changes with a brief push of the rotary switch.

The value is displayed (for example, see fig. 3-6).
● Select the individual information with the rotary switch.
More detailed explanations and possible setting values for this rotary switch setting
can be seen in chapter 6.10.
Display operating data
In the information level "
Overview
", the current operating data of
ROTEX HPSU compact are displayed on the overview display of
Control RoCon HP.
The display of the operating data is not divided into several
windows. By adjusting the rotary switch it is toggled between the
windows.
Short
designation
Explanation of the displayed value
Mode Current mode of the heat pump:
"Sun": heating
"Snowflake": Cooling
"Water tap": Domestic hot water generation
"Water drops": Thawing function active
Ext Current energy mode of the heat pump:
LT: EVU function active and low tariff.
HT: EVU function active and normal tariff.
SGN: SMART GRID - Function active, normal
mode.
SG1: SMART GRID - Function active, rejection,
expensive power.
SG2: SMART GRID - Function active, multiple
operation, cheap power.
SG3: SMART GRID - Function active, start
command and multiple operation, cheap power.
- - -: No external mode active, heat pump works in
normal mode.
RT Parameter [Room thermostat] = Off: - - -
Parameter [Room thermostat] = On:
– "Sun": Heat demand
– "Circuit": No heat demand
Pump Actual output of the internal heating circulation
pump in %.
EHS Actual output of the backup heater (BUH) in %.
Mix1 Actual position of the mixing valve 3UVB.
TV actual flow temperature (t
V1
).
TVBH Actual water outlet temperature at the hot water
storage tank.
TR Actual return flow temperature of heating facilities
(t
R1
).
Tdhw Actual hot water temperature in the hot water
storage tank (t
DHW1
).