sauter EQJW145, Руководство по эксплуатации

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EQJW145: Heating controller
Technical data
7010015003 A
97
© Fr. Sauter AG
14.2 Overview of main functions
The room temperature connection is enabled in the SERVice level. This
requires a room temperature sensor. The influence of the room temperature
connection can be set in SERVice level. Maximum change to T
F
due to room
temperature connection:
±
30 K.
The anti-frost function cuts in if a control circuit is in OFF mode and the anti-
frost function was enabled in SERVice level. In addition, the anti-frost limit
must have been undercut. The anti-frost limit is 3°C for the outdoor
temperature. The anti-frost function is disabled if the outdoor temperature is
higher than 4°C. When the anti-frost function cuts in, a flow temperature of
10°C is controlled for the heating circuits. If the DHW temperature < 5°C,
heating to 10°C takes place.
The pump anti-jamming facility function is enabled in SERVice level. At 00:00
hours every day, a pump is switched on for 60 seconds if it was not operated
during the preceding 24 hours. This function is active in all modes except
manual mode.
One of the output relays (terminal 10) can be parameterised for a very wide
variety of functions. This enables the output to be used as a pilot timer
output, a collective fault alarm, to control a 2nd tank charge pump, a
circulating pump or for forced control of the heating medium pump.
The maximum and minimum setpoints for the flow temperature are limited. If
the calculation for the setpoint for the flow temperature is outside of the limit,
then the limit temperature is controlled. The limit value is set in SERVice
level. In manual mode, flow temperature control is not enabled and so there
is no flow temperature limit. If the anti-frost function is active, the flow
temperature limit is disabled.
The maximum setpoint for T
W
can be limited in SERVice level.
The weekly switching programme can be used to increase T
W
at regular
intervals. If a higher T
W
is required for a longer period independently of the
switching programme, a separate switch is available.
T
RF
can be monitored for the maximum actual value. If the temperature
exceeds a limit for the actual value of T
RF
, the setpoint for T
F
is reduced. For
the heating circuit, a limitation characteristic dependent on the outdoor
temperature (fixed value-sequence-fixed value) can be defined, and a fixed
limit value can be defined for the DHW preparation. The limitation function or
the limit value and the influence on the setpoint for T
F
are parameterised in
SERVice level.
Room temperature
connection
Anti-frost
Pump anti-jamming
facility
Multifunctional
relay output
Flow temperature
limitation
Limitation of TW
Legionella function
Limitation of return
temperature