Rotex HPSU compact 508 Instruction Manual page 39

[9] - Target value temperature ranges for room heating and room cooling
With these parameter settings, you can set target value ranges for the room heating temperature and the room cooling
temperature
too low.
(
The following setting options are available:
– [9-00] Upper limit of the heating target value: Maximum water output temperature during room heating.
– [9-01] Lower limit of the heating target value: Minimum water output temperature during room heating.
– [9-02] Upper limit of the cooling target value
– [9-03] Lower limit of the cooling target value
– [9-04] Setting the temperature violation: Defines how high the water temperature may rise above the target value before the
refrigerant compressor is stopped. This function is for the heating mode only.
[A] - Low-noise operation
This setting allows for the selection of the required mode for low-noise operation. Two modes are available. In certain cases,
low-noise operation can become apparent through reduced performance.
In mode A, the unit is given the highest priority so that it operates at low-noise in all circumstances. The speed of the ventilator
and compressor are reduced to a specific percentage of the normal operating capacity (and thus its performance too).
In mode B, low-noise operation is suspended when the system requires a higher output.
– [A-00] Mode for low-noise operation: mode A or mode B.
– [A-01]: Do not change this setting. Leave the default setting as it is.
– [A-02]: Do not change this setting. Leave the default setting as it is.
– [A-03]: Do not change this setting. Leave the default setting as it is.
– [A-04]: Do not change this setting. Leave the default setting as it is.
BA ROTEX HPSU compact 2 - 04/2011
(1
. These settings prevent the user unintentionally setting a water output temperature that is either too high or
CAUTION!
If the temperature change in the underfloor heating system is too fast the first time it is switched on,
the concrete floor could crack during heating.
• Set parameter [9-01] to 15 °C for initial start-up.
• After several heating cycles, the lower limit [9-01] must be adapted to the specification of the particular
underfloor heating system.
CAUTION!
If, during room cooling operation
condensation may occur on the floor and thus cause material damage to the underfloor heating system and in
the area of the floor.
• Never set parameter [9-03] to less than 16 °C.
,
the lower limit of the cooling target value [9-03] is set below 16 °C,
: Maximum water output temperature during room cooling.
: Minimum water output temperature during room cooling.
4 x Parameter settings
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