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12.5
12.4.4 Silent and Dynamic Cooling
Different system configurations can be implemented according to
each integration diagram. Make selections in the menu item
"Settings – Cooling".
Dynamic-only cooling (e.g. fan convectors)
The fixed setpoint control determines the regulation. Set the
desired return flow set temperature in the "Settings" menu
item.
Silent-only cooling (e.g. underfloor heating, wall panel
heating or cooled ceilings)
The
room
temperature
Regulation is based on the temperature of the room where
the room climate control station 1 is connected according to
the circuit diagram. Set the desired room temperature in the
"Settings" menu item.
The maximum transferrable cooling capacity for silent
12.5 Regulation of the Room Temperature
Heating systems are normally equipped with an automatic
mechanism for separately regulating the room temperature in
each room.
The room thermostats measure the current temperature in
heating operation. If the current temperature undershoots the set
temperature, the thermostats activate the regulating device (e.g.
actuator).
13 Special accessories
13.1 Remote control
A remote control adds convenience and is available as a special
accessory. Operation and menu navigation are identical to that of
the heat pump manager. However, additional functions can be
used by means of supplementary pushbuttons (for a detailed
description, see remote control instructions). The remote control
is connected via a 6-core telephone cable (special accessory)
with modular plugs.
13.2 Remote Diagnostic System (FDS)
The remote diagnostic system (Fern Diagnose System - FDS)
was developed to enable access to the heat pump manager via
PC. In combination with an "Internet-compatible" PC and the
separately available hardware packages, the software enables
the user settings to be read out and changed as required. The
software is programmed to allow a constant exchange of data
between the heat pump manager and the PC. Changes are
possible both at the heat pump manager and in the program.
The software is started via an Internet browser on the PC and
has been optimized for the Windows 2000 and XP operating
systems.
Two versions are available:
Remote diagnostics on-site (e.g. with a laptop): Local
Diagnostic System (LDS). Direct connection of the PC cable
via the LDS hardware package to the heat pump manager
(WPM).
EN-36
determines
the
regulation.
cooling is heavily dependent on the relative humidity. High
humidity reduces the maximum cooling capacity, because
the flow temperature can not be lowered any further once
the calculated dew point has been reached.
Combination of dynamic and silent cooling
Regulation is carried out separately in two different control
circuits.
The dynamic circuit is regulated according to a fixed setpoint
(as described for dynamic cooling).
Silent cooling is regulated on the basis of the room
temperature (as described for silent cooling) by controlling
the mixer for heating circuit 2 (silent heating and cooling
circuit).
NOTE
If the cooler switches off because the minimum flow temperature of 7 °C
has been reached, then either the water flow rate must be increased or a
higher return flow set temperature must be set (e.g. 16 °C).
In cooling operation, the room thermostats must be either
deactivated or replaced with units which are suitable for both
heating and cooling.
The room thermostat responds inversely in cooling operation i.e.
if the set temperature exceeds the current temperature, the
regulating device is activated.
NOTE
In the case of heating controllers with removable control panels (see
Chap. 3.2.1 on p. 4), the operating element can also be directly used as a
remote control.
Remote diagnostics via a modem connection: Remote
Diagnostic System (RDS). RDS is a useful tool for checking
the operation of a remotely located plant and for adjusting
the user settings on the heat pump manager.
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