Danfoss CCR2 Installation Manual page 10

Installation Guide
10
SMT/SI
CCR2
No LCD Display INSTALL MENu - FuNCTION DESCRIPTION
45 Div.Time Group division period. CCR 2 will calculate the average disinfection progress periodically every
... min number of minute set here from the moment that the disinfection starts. It will then decide whether
to divide the risers into groups or not.
Factory setting: 20 min
46 MinAdvan Minimum average disinfection progress in percentage calculated between the group division times,
... % above which the risers will not be divided into groups. If disinfection progress will be lower then e.g.
20%, the risers will be divided into groups.
Factory setting: 25 %
47 Riser Nr Number of risers connected to the CCR2.
Factory setting: 16
...
48 This is Function used: when CCR2 is connected to ECL (another control) or to another CCR2.
... .. Determines whether the CCR2 works as Master or Slave – only valid in parallel or sequence connection
with another CCR2 and connection to e.g.: ECL.
Example: one Master and two Slaves
If disinfection is not activated, the relay (C/NC/N0) will make shortcut C and NC. When disinfection is
activated, the relay (C/NC/N0) will change shortcut to C and N0 –
This short - cut C/NC allows the CCR2 to keep a continuously high supply temperature by ECL control
or another control. Available settings:
Master – keep shortcut (C/NC) until confirmation about finished disinfection. Process will come from
last CCR2 (Slave) through shortcut B2 to M (fault to frame).
Slave – keep shortcut (C/NC) only in this CCR2 (Slave) until finished disinfection in this part of the
installation controlled by this CCR2.
Factory setting: Slave ( always for single CCR2 )
Function used: when CCR2 is connected with another CCR2. Big extended systems.
49 CCR Sys
Parallel – disinfection is performed at the same time. If disinfection signal appears, output T1 becomes
... ... .
shortcut with M. This is the signal for CCR2 to start the disinfection. Parallel function allows the start of
the disinfection in all CCR2 at the same time, as Master CCR2 revokes the disinfection order for CCR2 -
Slave 1, and Slave1 in turns relays the revocation to CCR2 - Slave 2. (scheme - fig 10 and 11)
Sequence – disinfection step by step ( first CCR2 , second CCR2 etc)
If disinfection signal appears, the disinfection process starts only in first CCR2 (Master) and after
implementation (successful performed or not), output T1 becomes shortcut with M, which allows the
start of the process in another CCR2. When the CCR2 will perform the last disinfection, the first CCR2
(Master) will send a signal to ECL (or another control) and the supply disinfection temperature returns
to comfort temperature. (scheme on fig. 8 and 9)
Factory setting: Parallel
50 Int.Time Integration time of the disinfection temperature (and circulation temperature) sustenance process in
risers controlled by MTCV valves. The shorter the time, the quicker temperature changes (no stabile
regulation). The longer the time, the slower reaction for temperature changes (stable regulation).
Factory setting: 60 sec
51 Prop.Fac Control gain of the disinfection temperature (and circulation temperature) sustenance process
in risers controlled by MTCV valves. The higherthe gained control, the bigger valves reaction (no
stabile regulation). The lower the gained control, the weaker reaction for temperature change (stable
regulation).
Factory setting: 100
52 Req.Temp Set Required Temperature in installation.
... °C Setting range bewteen +10 °C and +100 °C.
This setting is used for temperature alarm output when real temperature in system exceed upper and
lower deviation count from Required Temperature.
Factory setting : 55 °C
53 Dif. Temp Set upper deviation temperature counted from Required Temperature. Temperature alarm output
in + .... °C indicated signal when temperature exceed this range.
Setting range bewteen +1 °C and +20 °C
Factory setting: +10 °C
54 Dif. Temp Set lower deviation temperature counted from Required Temperature. Temperature alarm output
in - ... °C indicated signal when temperature drop below this range.
Setting range between −1 °C and −20 °C
Factory setting: -10 °C
55 Alarm DLY Set ALARM DeLaY. The temperature alarm delay when real temperature exceed exceed upper and
... min lower deviation counted from Required Temperature.
Setting range between 0 minute and 100 minute
Factory setting : 10 min
VI.D1.E2.1R Heating Solutions