Technische Alternative uvr1611, Installation Instructions Manual

Page: 52 / 120

Solar priority
52
Input variables: Output variables:
Enable solar priority
Solar radiation = Radiation sensor Status flushing process
Indication of the output for the flushing
Involved functions
= Entry of all solar func-
tions in the function list
Special features:

In this function blocks, the "involved functions" are not individual values, but rather entire func-
tion module input variables.

The program automatically looks for all of the values needed in the function modules involved
and also automatically blocks the modules involved that are lower in the hierarchy.
Entire menu view:
(
Assumption: Six solar functions are entered in the function list)
DES: SOL. PRI.
FUNCTION STATUS:
INPUT VARIABLE:
OUTPUT VARIABLE:
SOLAR1 1 SOLAR 1 is the highest priority
SOLAR2 2 SOLAR 2 is the second priority
SOLAR3 3 SOLAR 3 is the last priority
SOLAR4 1 SOLAR 4 is the highest priority
SOLAR5 2 SOLAR 5 is the second priority
SOLAR6 3
SOLAR 6 is the last priority
SEC. TIMER:
from prim. stage 2
SOLAR 1 and 4 are loaded as "absolute" without time element
Solar rad: 488 W/m² Current solar radiation (does not apply without radiation sensor)
Thres val: 200 W/m² Activation threshold for timer (does not apply without radiation
sensor)
Runtime: 20 Min Runtime for the consumer of lower priority until timer starts
delay time: 5 Min The collector must reach the temperature of the priority cylinder
within five minutes; otherwise, the cylinder of lower priority will be
charged
As this example makes clear, it is also possible to assign the same priority. Generally, this approach
is only useful if the system has multiple collector fields. The priorities in the example correspond to the
system with two collector fields charging three consumers (such as Solar 1 = collector 1 for cylinder 1
and Solar 2 = collector 1 for cylinder 2, etc.).
SOLAR 1 and SOLAR 4 are admissible first as the lower priority time element is only active starting at
priority level 2 until the consumer has reached its maximum temperature (absolute). Only then does
the priority treatment shift to the other solar functions via the priority timer (relative).