Velux TFF 200, Инструкция по применению

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44 VELUX
SECTION III: SOLAR CONTROL SYSTEM SECTION III: SOLAR CONTROL SYSTEM
4.1.6 Operating hours counter
The operating hours counter adds up the solar oper-
ating hours of the respective relay (
h P / h P1 / h P2 ).
Full hours are shown on the display.
The operating hours added up can be reset. As soon
as one operating hours channel is selected, the
symbol
is permanently shown on the display.
The button (3) must be pressed for approx. 2
seconds in order to get into the RESET-mode of the
counter. The display-symbol
is flashing and
the operating hours will be set to 0, if confirmed by
button
within 5 seconds.
In order to finish the RESET-procedure, the button
must be pressed to confirm.
4.1.7 Heat quantity balancing
A heat quantity balancing is possible for the basic
systems (ARR) 1, 3, 4, 5 and 6 in conjunction with
a flowmeter. For this purpose option heat quantity
balancing in channel
OHQM
has to be activated.
The volume flow readable at the flowmeter (l/min)
must be adjusted in the channel
FMAX
. Antifreeze
type and concentration of the heat transfer medium
are indicated on the channels
MEDT and MED% .
Type of antifreeze:
0: Water
1: Propylene glycol/Antifreeze FS
2: Ethylene glycol
3: Vacuum antifreeze FSV
Please note: Channels FMAX and MEDT are only
available during the activated option heat quantity
measurement (
OHQM
).
h P / h P1 / h P2:
Operating hours-
counter
Display channel
OHQM:
Heat quantity balancing
Adjustment range:
OFF ... ON
Factory setting: OFF
FMAX
:
Volume flow in l/min
Adjustment range:
0 ... 20 in steps of 0.1
Factory setting: 6.0
MEDT:
Type of antifreeze
Adjustment range:
0 ... 3
Factory setting: 1