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Siemens Standard application AHU CE1P3977en_02
Building Technologies Functions 01.02.2010
Pump kick is enabled.
Main Index > Configuration > Configuration 2 > Hrec (pump)/cmd = Yes+Kick
The pump is switched on for a short period for longer idle periods. This prevents
lock up.
Main Index > Unit > Temp control > Heat recovery > Pump / cmd
Parameter Range Function
Kick date / time Mo 00:00...So 23:29 Weekday and time for pump kick. Sets the weekday
(Mon...Sun) and time to run the pump kick.
Examples:
Mon *:* Each Monday at midnight.
Sat 07:* Each Saturday at 7:00 am.
* *:* Time is not relevant; the kick interval applies
accordingly.
Kick interval 0.0...36000.0 [h] Idle time for pump kick. Set the idle time after which a
pump kick is run. Examples:
168 After 168 hours.
123.4 After 123 hours and 24 minutes.
0 Idle time is not relevant; kick date/time applies
accordingly.
Kick on time 0.0...36000 [s] Set the period for the pump kick.
Examples:
10 Period = 10 seconds.
0 Period = 1 controller cycle (ca. 150 ms).
Kick date/time = * *:* and kick interval = 0 --->
No pump kick is run.
5.7.4 Heat recovery Frost
Frost protection type is enabled:
Master Index > Configuration > Configuration 2, Heat recovery frost <> No
• Temperature frost protection: Detects icing using a temperature sensor in the
water exchanger if selected as water or in exhaust air if selected as plate or
wheel. This applies for the following settings:
Heat recovery frost = Detector, sensor or Dtctr+Snsr.
• Air-side frost protection: Detects icing using a pressure sensor. This applies
for the following settings:
Heat recovery frost = PressSnsr und Pres+Dtctr.
– For output Frost controller > Output recovery ---> The output follows the recov-
ery.
– For output Frost controller < Output recovery ---> The output follows the frost
controller.
– Controller is disabled when the sensor fails.
The heat recovery controller goes to 100 % output signal as soon as the frost con-
troller is no longer enabled, when the subsequent heating register was enabled
during frost control.
Prerequisite
Function
Parameter
Note
Prerequisite
Two types of frost detec-
tion:
Function
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
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