STIEBEL ELTRON SOM 9s - Manual (Page 90)

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SOM 9s
With this function, e. g. a valve can be controlled in parallel
to the pump via a separate relay PARRe.
If solar loading takes place (R1 and/or R2) or if a solar
function is active, the relay selected will be energized. The
parallel relay can also be energized inversely (INVER).
For this function, free sensors at an appropriate position can
be selected. Reference sensor for the thermal disinfection
is S3.
The relay for the thermal disinfection function can be se-
lected.
Parallel relay
OPARR / PARRE
Parallel relay
Adjustment range 2, 3, 4
Factory setting:
system-dependent
OTDIS / TSDIS
Sensor thermal disinfection
Adjustment range 2, 3, 4, 5
Factory setting: 3
note:
If R1 and/or R2 are in the manual mode, the se-
lected parallel relay will not be energized.
energy metering
OHQM
Energy metering
Adjustment range: ON / OFF
Factory setting: OFF
Energy metering can be carried out in 3 different ways (see
below): without flowmeter V40, with flowmeter V40 or with
Grundfos sensor.
Î Enable the energy metering option in the channel
OHQM.
Î Select the type of flow rate detection in the channel
FTYPe.
OHQM / FTYPE
Flow rate detection type
Selection: 1, 2, 3
Factory setting: 1
Flow rate detection type:
1 : fixed flow rate value
2 : V40
3 : VFS sensor
OHQM / FMAX
Flow rate
Adjustment range:
0.5... 100.0 l/min
in steps of 0.1 l/min
Factory setting: 6.0 l/min
OHQM / MEDT
Heat transfer fluid
Adjustment range: 0...3
Factory setting: 3
Energy metering with fixed flow rate value
The energy metering calculation (estimation) uses the
difference between flow and return temperature and the
entered flow rate (at 100 % pump speed).
Î Adjust 1 in the channel FTYPe
Î Read the flow rate (l/min) and adjust it in the channel
FMAX.
Î Adjust the antifreeze type and concentration of the heat
transfer fluid in the channels MeDT and MeD%.
note:
Type 3 can only be selected if the Grundfos sen-
sors have been activated in the channel GFDS.
OTDIS / RDIS
Relay thermal disinfection
Adjustment range 2, 3, 4
Factory setting: 3
note:
FMAX cannot be selected in systems with 2
solar pumps (ARR 6, 7, 17, 18, 19, 20, 21, 22, 23,
24, 25, 26).