EN-21
Configuring the Heat Pump Heating System
6.4
Englis
h
Table 6.1:
Switching mode of pressure switches for heat pumps with a
manufacturing date before FD8404
6.4 Special Functions
Depending on the system configuration, the “Special functions”
menu contains the following options for changing the current
operating states:
ATTENTION!
Special functions must only be activated by a technician in order to carry
out a start-up or an analysis of the heat pump system.
“Contact open” denotes a utility block.
Always
“Contact open” denotes a block.
Always
“Contact closed” means that a fault has occurred.
LP brine
“Contact closed” means that a fault has occurred.
Cooling function
Silent cooling
“Contact closed” means that a request for domestic hot water is
pending.
Domestic hot
water
Thermostat
“Contact closed” means that a request for swimming pool water is
pending.
Swimming pool
“Contact closed” denotes circulation pump start.
Circulation
Pulse
1. Valid for all heat pumps with a manufacturing date after FD8404. All other heat pumps should be set according to the following table:
Status display of all digital inputs
Heat pump
type
High-pressure
switch
Low-pressure
switch
LI / LA
NO contact
NO contact
SI / WI
NO contact
NC contact
High-temperature
NO contact
NC contact
Activation of special functions
Display
By activating the “Quick start” function, the heat
pump can start up after the safety-related periods
have elapsed. A switching cycle block is
overridden.
No
Yes
Always
When the “Deactivate operating” function is
activated, the heat pump can start up after the
safety-related periods have elapsed. The lower
operating limit undershoot monitor is turned off.
No
Yes
Brine-to-water HP
By activating this function, defrosting is disabled for
one hour in the case of air-to-water heat pumps.
The 2nd heat generator is enabled. If defrosting is
taking place, it will be terminated.
No
Yes
Air HP
Function testing of pumps and mixer
Always
By activating this function, the primary side pumps
are switched on constantly for a period of 24 hours.
The heat pump remains blocked during this period.
No
Yes
Always
By activating this function, the secondary side
pumps are switched on constantly for a period of 24
hours. The heat pump remains blocked during this
period.
No
Yes
Always
By activating this function, the hot water pump is
switched on constantly for a period of 24 hours.
The heat pump remains blocked during this period.
No
Yes
Always
By activating this function, the mixers in the system
are firstly moved in an OPEN and then in a
CLOSED direction for the set mixer runtime
No
Yes
Always
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