en
63
Installation
Indications,
functions and options
Messages
Commissioning
Operation and function
Sensor allocation for heat quantity measurement:
SEN
1
2
OFF
Arrangement
SFL
SRET
SFL
SRET
SFL
SRET
1
GFD
S4
S4
GFD
S1
S4
2
---
---
S1
GFD
---
---
3
GFD
S4
S4
GFD
S1
S4
4
GFD
S4
S4
GFD
S1
S4
5
GFD
S4
S4
GFD
S1
S4
6
GFD
S4
S4
GFD
---
---
7
GFD
S4
S4
GFD
---
---
8
---
---
S1
GFD
---
---
9
---
---
S1
GFD
---
---
10
GFD
S4
S4
GFD
S1
S4
MEDT
Heat transfer fluid
Adjustment range: 0 … 3
Factory setting: 1
MED%
Antifreeze concentr.
in Vol-% (MED% is not indicated when
MEDT 0 or 3 is used.)
Adjustment range: 20 … 70 %
Factory setting: 45 %
Heat transfer fluid:
0 : Water
1 : Propylene glycol
2 : Ethylene glycol
3 : Tyfocor
®
LS / G-LS
Note
If the system 10 has been selected and OHQM is activated, heat quantity
measurement will be interrupted when the 3-port valve switches to the
heat dump. Heat quantity measurement with a PWM feedback signal or
VFD Grundfos Direct Sensor™ will continue independently.
Drainback option
Note
A drainback system requires additional components such as a holding tank.
The drainback option should only be activated if all components required
are properly installed.
Note
The drainback option is only available in system with one store and one
collector (Arr 1, 2, 3, 8 and 9).
In a drainback system the heat transfer fluid will flow into a holding tank if solar
loading does not take place. The drainback option initiates the filling process if solar
loading is about to start. If the drainback option is activated, the following adjust-
ment can be made.
ODB
Drainback option
Adjustment range: OFF / ON
Factory setting: OFF
Note
If the drainback option is activated, the cooling functions and the antifreeze
function will not be available. If one or more than one of these functions
have been activated before, they will be deactivated again as soon as ODB is
activated. They will remain deactivated, even if ODB is deactivated later on.
Note
When the drainback option ODB is activated, the factory settings of the
parameters nMN / n1MN, DT O, DT F and DT S will be adapted to values
suiting drainback systems.
Additionally, the adjustment range and the factory setting of the collector
emergency shutdown will change. Adjustments previously made in these
channels will be overridden and have to be entered again if the drainback
option is deactivated later on.